Results 31 to 40 of about 110,313 (345)

Unstable periodic orbits and attractor of the barotropic ocean model [PDF]

open access: yesNonlinear Processes in Geophysics, 1998
A numerical method for detection of unstable periodic orbits on attractors of nonlinear models is proposed.  The method requires similar techniques to data assimilation.  This fact facilitates its implementation for geophysical models.  ...
E. Kazantsev
doaj  

Global Analysis of a Planetary Gear Train

open access: yesShock and Vibration, 2014
By using the Poincaré-like cell-to-cell mapping method and shooting method, the global characteristics of a planetary gear train are studied based on the torsional vibration model with errors of transmission, time-varying meshing stiffness, and multiple ...
Tongjie Li, Rupeng Zhu
doaj   +1 more source

Periodic Orbit Theory of Diffraction [PDF]

open access: yesPhysical Review Letters, 1994
An extension of the Gutzwiller trace formula is given that includes diffraction effects due to hard wall scatterers or other singularities. The new trace formula involves periodic orbits which have arcs on the surface of singularity and which correspond to creping waves. A new family of resonances in the two disk scattering system can be well described
Vattay, G., Wirzba, A., Rosenqvist, P.
openaire   +4 more sources

Replicate Periodic Windows in the Parameter Space of Driven Oscillators

open access: yes, 2011
In the bi-dimensional parameter space of driven oscillators, shrimp-shaped periodic windows are immersed in chaotic regions. For two of these oscillators, namely, Duffing and Josephson junction, we show that a weak harmonic perturbation replicates these ...
Baptista   +34 more
core   +1 more source

Periodic orbits in tall laterally heated rectangular cavities [PDF]

open access: yes, 2017
This study elucidates the origin of the multiplicity of stable oscillatory flows detected by time integration in tall rectangular cavities heated from the side.
Net Marcé, Marta   +1 more
core   +2 more sources

Bifurcations of Orbit and Inclination Flips Heteroclinic Loop with Nonhyperbolic Equilibria

open access: yesThe Scientific World Journal, 2014
The bifurcations of heteroclinic loop with one nonhyperbolic equilibrium and one hyperbolic saddle are considered, where the nonhyperbolic equilibrium is supposed to undergo a transcritical bifurcation; moreover, the heteroclinic loop has an orbit flip ...
Fengjie Geng, Junfang Zhao
doaj   +1 more source

Moving average network examples for asymptotically stable periodic orbits of monotone maps

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2018
For a certain type of discrete-time nonlinear consensus dynamics, asymptotically stable periodic orbits are constructed. Based on a simple ordinal pattern assumption, the Frucht graph, two Petersen septets, hypercubes, a technical class of circulant ...
Barna Garay, Judit Várdai
doaj   +1 more source

Existence and Stability of nT-Periodic Orbits in the Boost Converter

open access: yesApplied Sciences, 2022
In high load conditions, the boost converter presents some phenomena, such as chattering, chaos, subharmonics, and nT-periodic orbits, which require studying them with the aim of reducing the effects and improving the performance of these electronic ...
Simeón Casanova Trujillo   +2 more
doaj   +1 more source

Finding Periodic Orbits in Projected Quantum Many-Body Dynamics

open access: yesPRX Quantum
Describing general quantum many-body dynamics is a challenging task due to the exponential growth of the Hilbert space with system size. The time-dependent variational principle (TDVP) provides a powerful tool to tackle this task by projecting quantum ...
Elena Petrova   +3 more
doaj   +1 more source

Periodic and Chaotic Orbits of a Neuron Model

open access: yesMathematical Modelling and Analysis, 2015
In this paper we study a class of difference equations which describes a discrete version of a single neuron model. We consider a generalization of the original McCulloch-Pitts model that has two thresholds.
Aija Anisimova   +2 more
doaj   +1 more source

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