Results 31 to 40 of about 20,901 (271)

Railway track condition assessment at network level by frequency domain analysis of GPR data [PDF]

, 2018
The railway track system is a crucial infrastructure for the transportation of people and goods in modern societies. With the increase in railway traffic, the availability of the track for monitoring and maintenance purposes is becoming significantly ...
Fontul, Simona, Paixão, André, Pajewski, Lara, Solla, Mercedes   +3 more
core   +2 more sources

Headway Optimisation for Metro Lines Based on Timetable Simulation and Simulated Annealing

Journal of Advanced Transportation, 2022
To improve the capacity of metro systems, it is important to evaluate and minimise headway, which is defined as the time interval calculated from “head to head” between two successive trains in this paper.
Yong Cui, Qing Yu, Chenyang Wang
doaj   +1 more source

New Insights from Multibody Dynamic Analyses of a Turnout System under Impact Loads

Applied Sciences, 2019
A railway turnout is an essential infrastructure for managing railway traffic flexibility. In contrast, it imposes restrictions on train operations such as lower operational speeds through the turnout due to the complex movements of trains over the ...
Mehmet Hamarat, Sakdirat Kaewunruen, Mayorkinos Papaelias, Mika Silvast   +3 more
doaj   +1 more source

Auto-Resonant Detection Method for Optimized ZVS Operation in IPT Systems With Wide Variation of Magnetic Coupling and Load

IEEE Open Journal of the Industrial Electronics Society, 2021
In wireless charging systems, the H-bridge converter's switching frequency is set close to the system's natural resonance for achieving optimized zero voltage switching (ZVS). Variations to the system's natural resonance are commonly
Francesca Grazian, Thiago Batista Soeiro, Peter J. van Duijsen, Pavol Bauer   +3 more
doaj   +1 more source

Dynamic Measurement of Switch and Crossing Geometry

Civil-Comp Conferences
The reliability of many switches & crossings plays a vital role in guaranteeing traffic stability. Regular checks on their geometry, particularly specific dimensions, are traditionally done using geometric rulers or via measuring train, that take the above measurements in a ”dynamic” way. However, compared to traditional static techniques, this dynamic
R. Acosta Suñé, P. Fisette, N. Docquier, Sixth International Conference on Railway Technology: Research, Development and Maintenance   +3 more
openaire   +2 more sources

Automated Construction of Mesoscopic Railway Infrastructure Models Supporting Station Throat Capacity Assessment

IEEE Access, 2023
Assessment of the traffic capacity of a rail infrastructure involved within railway stations is one of the basic components of the rail transport planning process.
Petr Vesely, Antonin Kavicka, Pavel Kryze   +2 more
doaj   +1 more source

Simple realizability of complete abstract topological graphs simplified

, 2019
An abstract topological graph (briefly an AT-graph) is a pair $A=(G,\mathcal{X})$ where $G=(V,E)$ is a graph and $\mathcal{X}\subseteq {E \choose 2}$ is a set of pairs of its edges.
Kynčl, Jan
core   +1 more source

Why and When Are Evidence‐Based Interventions Adopted in Paediatric Supportive Care? A Qualitative Exploration of the Determinants of Photobiomodulation Implementation

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Oral mucositis is a common and debilitating side effect of childhood cancer and stem cell transplant treatments. It affects the quality of life of children and young people (CYP) and places a strain on services. Photobiomodulation is recommended for oral mucositis prevention in international guidance but is poorly implemented in UK ...
Claudia Heggie, Kara A. Gray‐Burrows, Peter F. Day, Bob Phillips, Carl A. Thompson   +4 more
wiley   +1 more source

96-Channel on-chip reconfigurable optical add-drop multiplexer for multidimensional multiplexing systems

Nanophotonics, 2022
The multi-dimensional multiplexing technology is very promising for further increasing the link capacity of optical interconnects. A 96-channel silicon-based on-chip reconfigurable optical add-drop multiplexer (ROADM) is proposed and demonstrated for the
Zhao Weike, Peng Yingying, Cao Xiaoping, Zhao Shi, Liu Ruoran, Wei Yihui, Liu Dajian, Yi Xiaolin, Han Shangtong, Wan Yuanjian, Li Kang, Wu Guangze, Wang Jian, Shi Yaocheng, Dai Daoxin   +14 more
doaj   +1 more source

Dynamic Search of Train Shortest Routes Within Microscopic Traffic Simulators

IEEE Access, 2022
Computer simulations are frequently used for rail traffic optimization. This approach, referred to as simulation-based optimization, typically employs simulation tools – simulators that are designed to examine railway systems at various levels of ...
Antonin Kavicka, Roman Divis
doaj   +1 more source