Results 21 to 30 of about 137,740 (294)

Autoparametric resonance of relaxation oscillations [PDF]

open access: yesZAMM, 2005
This paper deals with a coupled system of relaxation oscillators for free and damped vibrations. The author discusses the possibility of embedding the oscillator in an autoparametric system by coupling to a damped oscillator and analyzes the effects of the parametric modulation of the coupling on frequency responses and stability. The approach is based
Verhulst, F., Abadi
openaire   +4 more sources

Sand dune vegetation-biocrust interaction as a source of spatial heterogeneity

open access: yesJournal of Hydrology and Hydromechanics, 2022
Vegetation and biocrust play crucial roles in dune stability and mobility, and their interaction can lead to bistability, temporal oscillations, and hysteresis.
Yizhaq Hezi, Ashkenazy Yosef
doaj   +1 more source

Birefringence controlled room-temperature picosecond spin dynamics close to the threshold of vertical-cavity surface-emitting laser devices [PDF]

open access: yes, 2010
We analyze the spin-induced circular polarization dynamics at the threshold of vertical-cavity surface-emitting lasers at room-temperature using a hybrid excitation combining electrically pumping without spin preference and spin-polarized optical ...
Ackemann, T.   +5 more
core   +1 more source

Relaxation Cycles in a Model of Synaptically Interacting Oscillators

open access: yesМоделирование и анализ информационных систем, 2017
In this paper the mathematical model of a neural network with a ring synaptic interaction elements is considered. The model is a system of scalar nonlinear differential-difference equations, the right parts of which depend on a large parameter. The unknown
Margarita M. Preobrazhenskaia
doaj   +1 more source

A Data-Based Minimal Model of Episodic Inflation Events at Volcanoes

open access: yesFrontiers in Earth Science, 2022
Space geodetic time series, be they ground-based or space-based, have increased in length and accuracy. These series can now be mined for information on the qualitative dynamics of volcanic systems directly from surface deformation data.
Damian Walwer   +4 more
doaj   +1 more source

Volterra-series approach to stochastic nonlinear dynamics: linear response of the Van der Pol oscillator driven by white noise

open access: yes, 2020
The Van der Pol equation is a paradigmatic model of relaxation oscillations. This remarkable nonlinear phenomenon of self-sustained oscillatory motion underlies important rhythmic processes in nature and electrical engineering. Relaxation oscillations in
Belousov, Roman   +2 more
core   +1 more source

Relaxation damping in oscillating contacts [PDF]

open access: yesScientific Reports, 2015
AbstractIf a contact of two purely elastic bodies with no sliding (infinite coefficient of friction) is subjected to superimposed oscillations in the normal and tangential directions, then a specific damping appears, that is not dependent on friction or dissipation in the material. We call this effect “relaxation damping”.
Popov, Mikhail   +2 more
openaire   +5 more sources

Physical modeling of the rock bolt interaction with the rock massif [PDF]

open access: yesE3S Web of Conferences, 2019
The results of the physical modeling of the “rock bolt – rock massif” system are presented. The characteristics of rock bolt free oscillations depending on the degree of its clamping and tension were studied on special test benches.
Skipochka Serhii   +3 more
doaj   +1 more source

Co-eletrodeposição oscilatória de cobre e estanho Oscillatory co-electroposition of copper and tin

open access: yesQuímica Nova, 2008
It is investigated in the present contribution the oscillatory co-electrodeposition of CuSn on a polycrystalline gold surface in the presence of Triton X-100 surfactant and citric acid as additive, in acidic media.
Edson Joanni   +2 more
doaj   +1 more source

Analytic Characterization of the Dynamic Regimes of Quantum-Dot Lasers

open access: yesPhotonics, 2015
We present analytic treatment of the three different dynamic regimes found in quantum-dot laser turn-on and modulation dynamics. A dynamic coupling, and thus density-dependent scattering lifetimes between dots and reservoir, are identified to be crucial ...
Benjamin Lingnau, Kathy Lüdge
doaj   +1 more source

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