Results 71 to 80 of about 17,826 (235)
Bifurcation diagram for saddle/source bimodal linear dynamical systems [PDF]
, 2016 We continue the study of the structural stability and the bifurcations of planar bimodal linear dynamical systems (BLDS) (that is, systems consisting of two linear dynamics acting on each side of a straight line, assuming continuity along the separating ...
Ferrer Llop, Josep +2 more
core +1 more source
International Journal for Numerical Methods in Fluids, Volume 97, Issue 12, Page 1609-1622, December 2025.In this paper, we consider the concept of discretely divergence‐free finite elements (DDFFE) based on the Rannacher–Turek finite element pair to efficiently solve the three‐dimensional incompressible Navier–Stokes equations. For this purpose, we first define a spanning set of DDFFE functions and then characterize a set of basis functions for arbitrary ...
Christoph Lohmann
wiley +1 more source
Modeling and Analyzing the Influence of Fear on the Harvested Modified Leslie-Gower Model
مجلة بغداد للعلوم, 2023 A modified Leslie-Gower predator-prey model with a Beddington-DeAngelis functional response is proposed and studied. The purpose is to examine the effects of fear and quadratic fixed effort harvesting on the system's dynamic behavior.
Abdul Rahman Mahmoud Jamil +1 more
doaj +1 more source
Bifurcation Analysis of Nonlinear Oscillations in the Electrical Activity of Pancreatic β‐Cells
PAMM, Volume 25, Issue 4, December 2025.ABSTRACT Cell biological systems are characterized by complex relationships and nonlinear processes. The modeling of these processes improves the understanding, and represents a significant enrichment of the experimental investigation. An example of such a system is the regulation of blood glucose concentration by pancreatic β$\beta$‐cells through the ...
Paula Clasen +2 more
wiley +1 more source
Jacobson's Theorem near saddle-node bifurcations
, 2001 We discuss one parameter families of unimodal maps, with negative Schwarzian derivative, unfolding a saddle-node bifurcation. It was previously shown that for a parameter set of positive Lebesgue density at the bifurcation, the maps possess attracting periodic orbits of high period.
Homburg, Ale Jan, Young, Todd
openaire +2 more sources
Single‐Neuron Critical Intermittency in a Stochastic Hodgkin–Huxley Model
European Journal of Neuroscience, Volume 62, Issue 12, December 2025.We implemented a stochastic Markovian Hodgkin–Huxley model to simulate the function of the neuronal membrane. The resulting membrane potential time series were analyzed using the Method of Critical Fluctuations and were found to exhibit critical intermittency, which was conditional to the system's proximity to its spiking threshold.
Konstantinos Varvaras +2 more
wiley +1 more source
Using Nyquist or Nyquist-Like Plot to Predict Three Typical Instabilities in DC-DC Converters
, 2012 By transforming an exact stability condition, a new Nyquist-like plot is proposed to predict occurrences of three typical instabilities in DC-DC converters.
Al-Mothafar +24 more
core +1 more source
Optimal Observation Locations for Early Warning of the Onset of an AMOC Collapse
Geophysical Research Letters, Volume 52, Issue 22, 28 November 2025.Abstract There is increasing concern that the Atlantic Meridional Overturning Circulation (AMOC) will start to collapse this century having disrupting societal impacts worldwide. Although several available reconstructions appear to indicate a gradual weakening of the AMOC over the last century, the proximity to a possible tipping point associated with ...
Emma J. V. Smolders +2 more
wiley +1 more source
Lorenz attractor through saddle-node bifurcations
Annales de l'Institut Henri Poincaré C, Analyse non linéaire, 1996 In this paper we consider the unfolding of a geometric Lorenz attractor when the singularity contained in this attractor goes through a saddle-node bifurcation. It is shown that these unfoldings can carry such a geometric Lorenz attractor either directly into a hyperbolic Plykin attractor or into phenomena associated to the unfolding of homoclinic ...
openaire +3 more sources
Journal of Computational Chemistry, Volume 46, Issue 28, October 30, 2025.This image categorizes global optimization methods into stochastic and deterministic approaches. Stochastic methods include techniques like Genetic Algorithms, Simulated Annealing, and Machine Learning, often involving randomness. Deterministic methods, such as Molecular Dynamics and Single‐Ended methods, follow defined rules without randomness.
Jorge Alberto Sanchez Alvarez +1 more
wiley +1 more source