Results 51 to 60 of about 13,456 (268)

Classifying Power Quality Issues in Railway Electrification Systems Using a Nonsubsampled Contourlet Transform Approach

open access: yesEngineering Reports, Volume 7, Issue 8, August 2025.
Railway electrification systems indeed have unique challenges due to variable power demand and dynamic train operations. Power quality (PQ) monitoring for high‐speed trains (HSTs) is essential to guarantee the effectual and unfailing operation of the ESs.
Pampa Sinha   +6 more
wiley   +1 more source

Adaptive and Robust Fault-Tolerant Tracking Control of Contact force of Pantograph-Catenary for High-Speed Trains [PDF]

open access: yes, 2015
This paper presents a modified multi-body dynamic model and a linear time-invariant model with actuator faults (loss of effectiveness faults, bias faults) and matched and unmatched uncertainties.
Jiang, Bing   +3 more
core   +1 more source

Strain Amplification via Helically Braided Fiber Reinforced Sleeve for Soft Material Energy Harvesting

open access: yesAdvanced Materials Technologies, Volume 10, Issue 13, July 8, 2025.
This study presents a braided fiber‐reinforced sleeve that amplifies strain in soft materials, enhancing their performance in stretchable devices like sensors and energy harvesters. By reinforcing and elongating encased materials, the sleeve increases the “effective” strain.
Emily Duan   +4 more
wiley   +1 more source

Analysis of a stochastic 2D–Navier-Stokes model with infinite delay [PDF]

open access: yes, 2019
Some results concerning a stochastic 2D Navier-Stokes system when the external forces contain hereditary characteristics are established. The existence and uniqueness of solutions in the case of unbounded (infinite) delay are first proved by using the ...
Caraballo Garrido, Tomás, Liu, Linfang
core  

Multifunctionality of Single‐Atom‐Thick 2D Magnetic Atoms in Nanolaminated M2AX: Toward Permanent Magnets and Topological Properties

open access: yesAdvanced Physics Research, Volume 4, Issue 6, June 2025.
High‐throughput calculations unveil the stability, magnetic behavior, and transport properties of M2AX phases with magnetic A elements, predicting 139 metastable compounds. Highlights include high‐Curie‐temperature magnets, exceptional magneto‐crystalline anisotropy, and tunable anomalous Hall and Nernst conductivities, offering new insights and ...
Chen Shen   +6 more
wiley   +1 more source

EMUs Pantograph Aerodynamics Experimental Research in Dropping Status under Strong Wind Condition

open access: yes机车电传动, 2016
When EMUs run at a high speed, the pantograph would be affected by airflow and blown up in dropping status, which would result in catenary short-circuit fault. In order to evaluate the pantograph aerodynamics characteristics in dropping status and ensure
JIAO Wengen
doaj  

Undervoltage compensation of pantograph catenary arc

open access: yesAIP Advances, 2020
This paper describes the design of a new type of pantograph-catenary arc simulation test device and simulation of the arc generated by the pantograph during operation under laboratory conditions.
Dan Dan Zou   +3 more
doaj   +1 more source

Technique for abrasive cutting of thick-film conductors for hybrid circuits [PDF]

open access: yes, 1969
Abrasive jet technique, producing prototype conductor networks for thick-film hybrid microcircuits, does not require screening and fixing procedures.
Nugent, J. B., Palermo, J. S.
core   +1 more source

Nonlinear analysis of dynamical complex networks [PDF]

open access: yes, 2013
Copyright © 2013 Zidong Wang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited ...
Dong, H, Hu, J, Shen, B, Wang, Z
core   +3 more sources

Artificial Intelligence Models Accuracy for Odontogenic Keratocyst Detection From Panoramic View Radiographs: A Systematic Review and Meta‐Analysis

open access: yesHealth Science Reports, Volume 8, Issue 4, April 2025.
ABSTRACT Background and Aims Odontogenic keratocyst (OKC) is a radiolucent jaw lesion often mistaken for similar conditions like ameloblastomas on panoramic radiographs. Accurate diagnosis is vital for effective management, but manual image interpretation can be inconsistent.
Reyhaneh Shoorgashti   +5 more
wiley   +1 more source

Home - About - Disclaimer - Privacy