Results 51 to 60 of about 285,745 (164)

The transient grating as a probe for polariton dynamics [PDF]

open access: yesJournal of Luminescence, 1991
A theory is presented that microscopically accounts for the role of polariton propagation in the transient grating experiment. The basis of our theory is formed by coupled equations of motion for polariton amplitudes and coherences, in which we account for polariton-phonon scattering.
openaire   +2 more sources

Transient Dynamics of Stimulated Raman Scattering in Gas-Filled Hollow-Core Photonic Crystal Fibers

open access: yesAdvances in Materials Science and Engineering, 2018
A theoretical and numerical investigation of transient dynamics of stimulated Raman scattering (SRS) inside gas-filled hollow-core photonic crystal fibers (HCPCFs) is reported here.
Yashar E. Monfared
doaj   +1 more source

PIDGeuN: Graph Neural Network-Enabled Transient Dynamics Prediction of Networked Microgrids Through Full-Field Measurement

open access: yesIEEE Access
A Physics-Informed Dynamic Graph Neural Network (PIDGeuN) is presented to accurately, efficiently and robustly predict the nonlinear transient dynamics of microgrids in the presence of disturbances.
Yin Yu   +5 more
doaj   +1 more source

Numerical Simulation of Shock and Vibration Tests for Converter Cabinet

open access: yes机车电传动, 2012
According to the standard GB/T 21563 2008 ’Railway applications- Rolling stock equipment- Shock and vibration tests’, the responses of the structure under random loading were computed by the finite-element analysis software ANSYS.
丁杰, 忻力, 荣智林, 陈燕平
doaj  

CONTACT FATIGUE LIFE ANALYSIS OF WHEEL EDGE REDUCER GEAR OF DRIVE AXLE OF LOADER BASED ON LOAD SPECTRUM (MT)

open access: yesJixie qiangdu, 2023
In view of the contact fatigue problem of the wheel side reducer gear of the drive axle of the loader during its service, the fatigue life was evaluated. Finite element models of the sun wheel and the planet wheel were established in Hypermesh.
YANG SiYuan, SONG XuDing, ZHANG Lei
doaj  

Demographic insights guide conservation priorities for the threatened orchid Cattleya quadricolor in tropical dry forest

open access: yesOryx
Understanding demographic processes is critical for conserving threatened epiphytes, yet detailed population studies remain rare. We analysed population dynamics in the context of phorophyte structure of the threatened orchid Cattleya quadricolor ...
Gabriela Torres Torres   +3 more
doaj   +1 more source

Transient Dynamics of a Superconducting Nonlinear Oscillator

open access: yesPhysical Review Applied, 2016
We investigate the transient dynamics of a lumped-element oscillator based on a dc superconducting quantum interference device (SQUID). The SQUID is shunted with a capacitor forming a nonlinear oscillator with resonance frequency in the range of several GHz.
Bhupathi, P.   +5 more
openaire   +4 more sources

Attractors and transient in sequential dynamical systems

open access: yesInternational Journal of Computer Mathematics, 2019
In this article, we show how to determine attractors in sequential dynamical systems on maxterm and minterm Boolean functions and their corresponding basins of attraction. Furthermore, we make possible to know when an attractor is globally attractive. As the main result of this work, upper bounds for the transient in such models are provided.
Juan A. Aledo   +3 more
openaire   +3 more sources

Solving three core challenges in transient dynamics analysis of matrix population models

open access: yesMethods in Ecology and Evolution
Populations are at the mercy of random disturbances, large and small, and rarely, if ever, converge on predicted long‐term behaviours. Therefore, when using matrix population models, ecologists study the dynamics of populations that depart from stable ...
Richard A. Hinrichsen
doaj   +1 more source

Stellar dynamics around transient co-rotating spiral arms

open access: yesEPJ Web of Conferences, 2012
Spiral density wave theory attempts to describe the spiral pattern in spiral galaxies in terms of a long-lived wave structure with a constant pattern speed in order to avoid the winding dilemma.
Cropper M., Grand R.J.J., Kawata D.
doaj   +1 more source

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