Results 121 to 130 of about 21,361 (314)

Multiagent Reinforcement Learning for Active Guidance Control of Railway Vehicles with Independently Rotating Wheels

Applied Sciences
This paper presents a novel data-driven multiagent reinforcement learning (MARL) controller for enhancing the running stability of independently rotating wheels (IRW) and reducing wheel–rail wear.
Juyao Wei, Zhenggang Lu, Zheng Yin, Zhipeng Jing   +3 more
doaj   +1 more source

Research on Secondary Impact Safety of Train Driver based on THUMS Dummy

MATEC Web of Conferences, 2016
Based on biomechanical Total Human Model for Safety (THUMS) dummy and traditional rigid dummy, the train driver injury of secondary impact in railway crash events is analyzed and the results are compared.
Wang Wenbin, Ji Jiawei, Yue Zhitao, Zhang Dongdong, Tian Honglei, Zhao Hongwei   +5 more
doaj   +1 more source

Collective Decision‐Making and Institutional Configurations in Polycentric Environmental Governance

Environmental Policy and Governance, EarlyView.
ABSTRACT Why do formally similar polycentric governance arrangements differ in their governance performance, and how do institutional configurations of enabling conditions account for these differences? [Correction added on 07 July 2026, after first online publication: The preceding sentence has been updated.] This article examines variation in ...
Kirsten Hegsvold
wiley   +1 more source

Analysis of the abnormal wear of the pantograph contact strip through combined experimental and simulation approaches

Scientific Reports
The carbon contact strip of pantograph collects current from the overhead catenary to power the train, inevitably causing wear to the contact surface. This paper addresses the abnormal wear of the pantograph carbon contact strip, a challenged accident ...
Xingshuai Zhi, Ning Zhou, Haifei Wei, Hongming Chen, Yao Cheng, Yi Sun, Langtao Zhao, Guanhua Huang, Weihua Zhang   +8 more
doaj   +1 more source

Concept, Tests, and Optimum Design of Novel Negative Stiffness Friction Dampers for Seismic Protection of Long‐Span Bridges

Earthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT Viscous dampers (VDs) are widely used to mitigate the excessive responses of long‐span bridges. However, VDs face some intricate challenges in engineering practices, including high damping coefficient requirement, potential base shear amplification and tremendous damping force under high velocity. To address these issues, this study develops a
Ruisheng Ma, Shaodong Jiang, Kun Xu, Qiang Han, Xiuli Du, Kaiming Bi   +5 more
wiley   +1 more source

Contact force identification in pantograph–catenary system via elastic support beam theory and enhanced l1 sparse regularization scheme

Scientific Reports
Accurate identification of pantograph–catenary contact force remains a challenging inverse problem, particularly under high-speed operating conditions where high-frequency dynamics play a critical role.
Haifei Wei, Ning Zhou, Xingshuai Zhi, Hongming Chen, Mudi Li, Yao Cheng, Weihua Zhang   +6 more
doaj   +1 more source

Integration of Light Rail Transit into City Streets [PDF]

, 1996
Integration of Light Rail Transit into City Streets documents and presents the results of a study to improve the safety of light rail transit (LRT) operations in shared rights-of- way where LRT operates on, adjacent to, or across city streets at low to ...
Levinson, Herbert S., Farran, Jose I., Mansel, Douglas M., Korve, Hans W, Chira-Chavala, Ted, Ragland, David R.   +5 more
core  

A Novel Bipolar DC Connection Strategy for Photovoltaic Power Plants With a 50% Reduction in DC Cabling Length

Energy Science &Engineering, EarlyView.
Bipolar configuration is a new topology in the direct current (DC) system of photovoltaic power plants, which is topologically analogous to the bipolar configuration utilised in High‐Voltage Direct Current power transmission systems. DC cable length and copper usage are reduced by 50% using a bipolar configuration.
Duško M. Tovilović, Željko R. Đurišić, Vladan R. Durković   +2 more
wiley   +1 more source

Practices for Wayside Rail Transit Worker Protection [PDF]

, 2012
The purpose of the synthesis was to report the state of the practice to aid transit agencies and other entities in deciding how to develop successful wayside rail track worker protection practices.
Kozub, Christopher A.
core  

Revisiting the Nexus Between Trade Liberalisation and Income Inequality: The Case of Sub‐Saharan African Countries

International Journal of Finance &Economics, EarlyView.
ABSTRACT This paper examines the impact of trade liberalisation on income inequality across 24 Sub‐Saharan African (SSA) countries from 2000 to 2020. Using IV‐Tobit and 2SLS models, we consistently find that greater trade openness significantly exacerbates inequality in the region. Critically, we document an inverted U‐shaped relationship between trade
Guivis Zeufack Nkemgha, Le Roi Nso Fils, Ulrich Kevin Kamwa   +2 more
wiley   +1 more source