Results 11 to 20 of about 1,381,071 (297)

Power main circuit design of the flexible excitation systems for large hydropower units

open access: yesZhejiang dianli
In response to the system voltage stability and damping issues caused by insufficient dynamic reactive power support capability of renewable energy units, this paper proposes a novel power main circuit topology for flexible excitation systems suitable ...
YAN Wenci   +6 more
doaj   +2 more sources

Using novel simplified models of excitation for analytic description of initiation propagation and blockage of excitation waves [PDF]

open access: yes, 2006
We consider applications of a recently suggested new asymptotic approach to detailed ionic models of cardiac excitation. First, we describe a three-variable approximation for the excitation fronts in a detailed ionic model of human atrial kinetics.
Simitev, R., Biktashev, V.N., Idris, I.
core   +8 more sources

Quantification of dynamic excitation potential of pedestrian population crossing footbridges [PDF]

open access: yes, 2011
Due to their slenderness, many modern footbridges may vibrate significantly under pedestrian traffic. Consequently, the vibration serviceability of these structures under human-induced dynamic loading is becoming their governing design criterion.
Pavić, Aleksandar   +3 more
core   +1 more source

OLCD: Delivering an Exciting Future for Flexible Displays [PDF]

open access: yesInformation Display, 2019
AbstractThe development of glass‐free organic LCDs (OLCDs) promises a future of thin, lightweight, and shatterproof screens that are scalable to large areas and capable of sidestepping flat screens' limitations to embrace curved surfaces.
openaire   +1 more source

Vibration and Stress Response of High-Speed Train Gearboxes under Different Excitations

open access: yesApplied Sciences, 2022
The vibration data of the gearbox on a high-speed train was measured, and the vibration characteristics were analyzed in this paper. The dynamic stress of the gearbox under the internal and external excitation was examined by a railway vehicle dynamic ...
Wangang Zhu, Wei Sun, Hao Wu
doaj   +1 more source

Analytical study on dynamic response of cantilever flexible retaining wall [PDF]

open access: yesArchives of Civil Engineering, 2023
Based on wave mechanics theory, the dynamic response characteristics of cantilever flexible wall in two-dimensional site are analyzed. The partial derivative of the vibration equation of soil layer is obtained, and the general solution of the volume ...
Xiuzhu Yang   +3 more
doaj   +1 more source

Vibration Behaviour Analysis and Vibration Suppression Studies of the Space Robot

open access: yesInternational Journal of Aerospace Engineering, 2022
Aiming at the problem that the vibration of space robot will reduce the dynamic accuracy of robot, a method of vibration suppression of space robot through trajectory planning is proposed.
Tian Yong   +3 more
doaj   +1 more source

High-Level Vibration for Single-Frequency and Multi-Frequency Excitation in Macro-Composite Piezoelectric (MFC) Energy Harvesters, Nonlinearity, and Higher Harmonics

open access: yesMicromachines, 2022
This paper presents an extensive experimental investigation to identify the influence of signal parameters on a piezoelectric harvester’s performance. A macro-fibre composite energy harvester was studied as an advanced, flexible, high-performance energy ...
Majid Khazaee
doaj   +1 more source

A Flexible Arrayed Eddy Current Sensor for Inspection of Hollow Axle Inner Surfaces

open access: yesSensors, 2016
A reliable and accurate inspection of the hollow axle inner surface is important for the safe operation of high-speed trains. In order to improve the reliability of the inspection, a flexible arrayed eddy current sensor for non-destructive testing of the
Zhenguo Sun   +4 more
doaj   +1 more source

Raranga te Kete Aronui—Weaving the Basket: Continuing With Open, Flexible, and Distance Learning [PDF]

open access: yes, 2020
This issue of the Journal uses the metaphor of raranga te kete aronui (weaving the basket of the pursuit of knowledge) as it continues the conversation of developing areas of open, flexible, and distance learning (OFDL). It comes at a time when the COVID-
Fields A   +3 more
core   +1 more source

Home - About - Disclaimer - Privacy