Results 21 to 30 of about 614,864 (203)

Electrical response of optimized DSSC’s by different dye-mordant-assistant combinations: A multi-time-hierarchical theoretical approach

open access: yesResults in Physics, 2021
The electrical response of dye-based photovoltaic cells upon a sudden illumination is explained in terms of a theoretical approach based on a time-hierarchical emergence of several physical processes.
R. Rodríguez   +3 more
doaj   +1 more source

Lateral vibration control of a beam subjected to the harmonic external load using a nonlinear energy sink [PDF]

open access: yesمجله مدل سازی در مهندسی, 2018
Annihilating of unwanted vibrations of mechanical systems is one of the necessary requirements of designers over years. This current paper investigates dynamical behavior of a clamped-clamped beam attached to a Nonlinear Energy Sink (NES) under the ...
Ali Ebrahimi Mamaghani, Hoda Sarparast
doaj   +1 more source

Relaxation Oscillations in Models of Multi-Species Biocenose

open access: yesМоделирование и анализ информационных систем, 2013
Some families of mathematical models of biological populations are considered. Invariant ratios between the parameters which characterize this or that population are revealed.
S. A. Kaschenko
doaj   +3 more sources

Travelling Waves in the Ring of Coupled Oscillators with Delayed Feedback

open access: yesMathematics, 2023
We studied travelling waves in N nonlinear differential equations with a delay and large parameter. This system is important because it can be regarded as a phenomenological model of N-coupled neuron-like oscillators with delay.
Alexandra Kashchenko   +2 more
doaj   +1 more source

Parameter Selection of Direct Modulation Semiconductor Laser for Shaping Current Based on Convolutional Neural Network

open access: yesIEEE Photonics Journal, 2022
The shaping current technology can efficiently and low-costly suppress the relaxation oscillations (ROs) of the direct modulation semiconductor laser (DML) for the high-performance optic system.
Qing-An Ding   +8 more
doaj   +1 more source

A numerical analysis of slow oscillations in dynamics of coupled systems [PDF]

open access: yes, 1998
We study a system that models a problem in which an oscillatory unit is coupled to a passive medium. We analyze the case in which an RCL circuit is coupled to an RC circuit.
Watanabe, Masaji
core   +1 more source

Electron-beam driven relaxation oscillations in ferroelectric nanodisks [PDF]

open access: yes, 2015
This work was supported by National Science Foundation Grant No. NSF-DMR-1334428 (P. Chandra).Using a combination of computational simulations, atomic-scale resolution imaging and phenomenological modelling, we examine the underlying mechanism for ...
Scott, James Floyd   +17 more
core   +1 more source

Bifurcation analysis of a semiconductor laser with filtered optical feedback [PDF]

open access: yes, 2006
We study the dynamics and bifurcations of a semiconductor laser with delayed filtered feedback, where a part of the output of the laser re-enters after spectral filtering.
Erzgraeber, H.   +9 more
core   +1 more source

Three discontinuity-induced bifurcations to destroy self-sustained oscillations in a superconducting resonator [PDF]

open access: yes, 2012
Based on previous experimental and analytical studies, the nonsmooth dynamical model of a superconducting resonator is discussed. The device is a superconducting sensor whose key elements are a sensor probe attached to a conducting ring, around which ...
Mike R. Jeffrey, Jeffrey, Mike R
core   +1 more source

Asymptotics of Solutions to a Differential Equation with Delay and Nonlinearity Having Simple Behaviour at Infinity

open access: yesMathematics, 2022
In this paper, we study nonlocal dynamics of a nonlinear delay differential equation. This equation with different types of nonlinearities appears in medical, physical, biological, and ecological applications.
Alexandra Kashchenko
doaj   +1 more source

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