Results 11 to 20 of about 131,627 (329)

Study of the Aerodynamic Performance of Pantograph Bowhead with Serrated Lower Surface in the Thermal Management Systems of the High-Speed Train Electrical Devices

open access: yesEnergies, 2023
The thermal management problems of traction drive systems for high-speed trains are of great importance for the operation reliability of high-speed trains.
Bo Cai   +4 more
doaj   +1 more source

Multiobjective Optimization and Weight Selection Method for Heavy Haul Trains Trajectory

open access: yesIEEE Access, 2022
Energy-saving, punctuality and smoothness are difficult to achieve in the operation of heavy haul train. This paper proposes a multi-objective method for speed curve optimization.
Wang Li, Senhao Jiang, Miaoxin Jin
doaj   +1 more source

Research on Air Supply Volume and Temperature Control of Subway Trains Based on Passenger Capacity

open access: yesAtmosphere, 2023
There is currently no way for subway air-conditioning systems to adjust to changes in passenger capacity in terms of air-supply volume and air-supply temperature.
Zhiyuan Liu   +6 more
doaj   +1 more source

Sizing and Energy Management of a Hybrid Locomotive Based on Flywheel and Accumulators [PDF]

open access: yes, 2009
The French National Railways Company (SNCF) is interested in the design of a hybrid locomotive based on various storage devices (accumulator, flywheel, and ultracapacitor) and fed by a diesel generator.
Akli, Cossi Rockys   +4 more
core   +2 more sources

An overview of a Lagrangian method for analysis of animal wake dynamics [PDF]

open access: yes, 2008
The fluid dynamic analysis of animal wakes is becoming increasingly popular in studies of animal swimming and flying, due in part to the development of quantitative flow visualization techniques such as digital particle imaging velocimetry (DPIV).
Dabiri, John O., Peng, Jifeng
core   +1 more source

Pygmy locomotion

open access: yesEuropean Journal of Applied Physiology and Occupational Physiology, 1994
The hypothesis that Pygmies may differ from Caucasians in some aspects of the mechanics of locomotion was tested. A total of 13 Pygmies and 7 Caucasians were asked to walk and run on a treadmill at 4-12 km.h-1. Simultaneous metabolic measurements and three-dimensional motion analysis were performed allowing the energy expenditure and the mechanical ...
MINETTI A. E.   +5 more
openaire   +5 more sources

Janka Hescheles’ 'Locomotive' (to Bełżec) [PDF]

open access: yes, 2016
This article concerns the influence of the most famous Polish poem for children: Lokomotywa by Julian Tuwim, particularly in three “Holocaust” paraphrases of this work, written by children in the ghetto and the concentration camps – the poems Lokomotywa ...
Morawiec, Arkadiusz
core   +2 more sources

A New Knowledge-Distillation-Based Method for Detecting Conveyor Belt Defects

open access: yesApplied Sciences, 2022
Aiming to assess the problems of low detection accuracy, poor reliability, and high cost of the manual inspection method for conveyor-belt-surface defect detection, in this paper we propose a new method of conveyor-belt-surface defect detection based on ...
Qi Yang   +8 more
doaj   +1 more source

Wheel/rail-force–based maintenance interval extension of the C80 series wagon [PDF]

open access: yesRailway Sciences, 2023
Purpose – This study aims to introduce the achievements and benefits of applying wheel/rail-force–based maintenance interval extension of the C80 series wagon in China.
Qi Xiao   +3 more
doaj   +1 more source

Study on the Characteristics of Trackside Acoustic Flow Field of High-Speed Train under the Influence of Crosswind

open access: yesSensors, 2023
During the on-track acoustic detection process, a potential flow model and an acoustic finite element mathematical model based on synthetic wind are utilized, taking into account the combined effects of vehicle speed, wind direction angle, and crosswind ...
Xing Zhao   +3 more
doaj   +1 more source

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