Results 31 to 40 of about 30,655 (149)

Bifurcation Type Change of AC Electrostatically Actuated MEMS Resonators due to DC Bias

Shock and Vibration, 2014
This paper investigates the nonlinear response of microelectromechanical system (MEMS) cantilever resonator electrostatically actuated by applying a soft alternating current (AC) voltage and an even softer direct current (DC) voltage between the ...
Dumitru I. Caruntu, Kyle N. Taylor
doaj   +1 more source

Complex Dynamical Behaviors in a Spring-Block Model with Periodic Perturbation

Complexity, 2019
A generalization of a Burridge-Knopoff spring-block model is investigated to illustrate the dynamics of transform faults. The model can undergo Hopf bifurcation and fold bifurcation of limit cycles. Considering the cyclical nature of the spring stiffness,
Cun Chen, Xueping Li, Jingli Ren
doaj   +1 more source

Numerical Continuation of Limit Cycle Oscillations and Bifurcations in High-Aspect-Ratio Wings

Aerospace, 2018
This paper applies numerical continuation techniques to a nonlinear aeroelastic model of a highly flexible, high-aspect-ratio wing. Using continuation, it is shown that subcritical limit cycle oscillations, which are highly undesirable phenomena ...
Andrew J. Eaton, Chris Howcroft, Etienne B. Coetzee, Simon A. Neild, Mark H. Lowenberg, Jonathan E. Cooper   +5 more
doaj   +1 more source

From First Lyapunov Coefficients to Maximal Canards

, 2012
Hopf bifurcations in fast-slow systems of ordinary differential equations can be associated with surprising rapid growth of periodic orbits. This process is referred to as canard explosion.
CHRISTIAN KUEHN, van der Pol B., van der Pol B.   +2 more
core   +1 more source

Finite-size and correlation-induced effects in Mean-field Dynamics [PDF]

, 2011
The brain's activity is characterized by the interaction of a very large number of neurons that are strongly affected by noise. However, signals often arise at macroscopic scales integrating the effect of many neurons into a reliable pattern of activity.
A Levina, AJ McKane, B Ermentrout, C Ly, CL Laing, D Cai, DJ Amit, DT Gillespie, DT Gillespie, G. Bard Ermentrout, GB Ermentrout, H Neudecker, HR Wilson, HR Wilson, J Teramae, J Touboul, J Touboul, J Touboul, JL Doob, JM Beggs, Jonathan D. Touboul, LF Abbott, M Benayoun, M Mattia, MA Buice, MA Buice, MI Dykman, N Brunel, N Brunel, N Brunel, O Faugeras, P Bressfloff, P Bressfloff, P Gaspard, R Rodriguez, R Rodriguez, RP Boland, S Boustani El, S Boustani El, S Coombes, S-I Amari, T Ohira, TG Kurtz, WR Softky   +43 more
core   +3 more sources

Critical dynamics and cyclic memory retrieval in non-reciprocal Hopfield networks

SciPost Physics
We study Hopfield networks with non-reciprocal coupling inducing switches between memory patterns. Dynamical phase transitions occur between phases of no memory retrieval, retrieval of multiple point-attractors, and limit-cycles. The limit cycle phase is
Shuyue Xue, Mohammad Maghrebi, George I. Mias, Carlo Piermarocchi
doaj   +1 more source

Four scenarios for the transition to spiking activity in a new neuron model [PDF]

Известия Саратовского университета. Новая серия: Физика
Background and Objectives: Understanding the mechanisms underlying the generation of spike activity in neurons is a central problem of modern theoretical neuroscience.
Eremeev, Vladimir P., Osipov, Grigory V.
doaj   +1 more source

A possible common physical principle that underlies animal vocalization: theoretical considerations with an unsteady airflow-structure interaction model

Journal of Biomechanical Science and Engineering, 2016
We previously described an analytical model regarding how human falsetto voice is produced upon interaction between the respiratory airflow and vocal fold motion.
Shinji DEGUCHI
doaj   +1 more source

Bifurcations of global reinjection orbits near a saddle-node Hopf bifurcation [PDF]

, 2006
The saddle-node Hopf bifurcation (SNH) is a generic codimension-two bifurcation of equilibria of vector fields in dimension at least three. It has been identified as an organizing centre in numerous vector field models arising in applications.
Krauskopf, B, Oldeman, BE
core   +3 more sources

Dynamics of a state-dependent delay-differential equation

Electronic Journal of Qualitative Theory of Differential Equations
We present a detailed study of a scalar differential equation with threshold state-dependent delayed feedback. This equation arises as a simplification of a gene regulatory model.
Tomas Gedeon, Antony Humphries, Michael Mackey, Hans-Otto Walther, Zhao Wang   +4 more
doaj   +1 more source