Results 41 to 50 of about 152,650 (280)

A new CAE procedure for railway wheel tribological design [PDF]

open access: yes, 2004
New demands are being imposed on railway wheel wear and reliability to increase the time between wheel reprofiling, improve safety and reduce total wheelset lifecycle costs.
Bel Knani, K.   +5 more
core  

Terahertz Channel Modeling, Estimation and Localization in RIS‐Assisted Systems

open access: yesAdvanced Electronic Materials, EarlyView.
Reconfigurable intelligent surfaces have become a recent intensive research focus. Based on practical applications, channel strategies for RIS‐assisted terahertz wireless communication systems are categorized into three different types: channel modeling, channel estimation, and channel localization.
Hongjing Wang   +9 more
wiley   +1 more source

Research on Axle Box Steel Spring Fractures for a Certain Type of Rail Vehicle

open access: yesChengshi guidao jiaotong yanjiu
ObjectiveIn response to the mass fracture problems of rail vehicle axle box steel springs in a certain region of China during application, it is necessary to analyze the spring fracture causes and develop relevant measures to address this issue. Method A
Yunpeng WANG   +3 more
doaj   +1 more source

Control Strategy of the Brake Dynamics for Railway Vehicles Equipped with Anti-Slip-Device [PDF]

open access: yes, 2006
From the point of view of railway vehicle braking processes it is an important requirement to maintain the roll-ing-motion-state of the wheels, i.e. the macro-sliding-free rolling contact between the vehicle wheels and the rail-head, since in the course ...
Békefi, Elemér, Zobory, István
core  

Fiber-optic interferometric sensor for monitoring automobile and rail traffic [PDF]

open access: yes, 2018
This article describes a fiber-optic interferometric sensor and measuring scheme including input-output components for traffic density monitoring. The proposed measuring system is based on the interference in optical fibers. The sensor, based on the Mach-
Cvejn, Daniel   +7 more
core   +1 more source

Innovative Artificial Intelligence‐Assisted Systems for Social Science Research: Architecture Design and Applied Practice

open access: yesAI &Innovation, EarlyView.
ABSTRACT The rapid advancement of large language model (LLM) technology is profoundly transforming the practice of social science research. Scholarly discussions on Artificial Intelligence (AI)'s role in social science research can be organised into three levels: AI as a research tool, AI as a methodological infrastructure and AI as a quasi‐cognitive ...
Jie Xiong
wiley   +1 more source

Archaeological Damage Assessment in Conflict Zones: Integrating Satellite Imagery and Ground Surveys in Daraa, Syria

open access: yesArchaeological Prospection, EarlyView.
ABSTRACT Satellite remote sensing is among the most significant modern methodologies supporting field archaeology. In addition to its efficiency in identifying archaeological sites, remote sensing offers a safe and cost‐effective approach in conflict zones.
Amal Al Kassem   +5 more
wiley   +1 more source

Basic study on vertical vibrations suppression in railway vehicle carbody by secondary suspension control using bogie vertical vibration velocity

open access: yesNihon Kikai Gakkai ronbunshu
This study investigates a new method for the effective application of active secondary suspension for reducing vertical vibration of the carbody to improve ride comfort of railway vehicles.
Yoshiki SUGAHARA, Ayumi AMANO
doaj   +1 more source

Application of Vehicle-Based Indirect Structural Health Monitoring Method to Railway Bridges—Simulation and In Situ Test

open access: yesApplied Sciences, 2023
In recent years, the vehicle-based indirect Structural Health Monitoring (iSHM) method has been increasingly used to identify the dynamic characteristics of railway bridges during train crossings, and it has been shown that this method has several ...
Michael Reiterer   +4 more
doaj   +1 more source

Developing system models to help Great Britain's railways embrace innovative technologies with confidence [PDF]

open access: yes, 2013
Railways are under pressure to become more efficient and cut their costs; innovation has a part to play in achieving these goals. The railway is, however, a complex and closely coupled system, making it difficult in the early stages of development, to be
Bouch, Christopher J. (Mr)   +1 more
core   +1 more source

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