Results 21 to 30 of about 5,089 (206)
A Design Method for Rail Profiles in Switch Panel of Turnout Based on the Contact Stress Analysis
Shock and Vibration, 2020 Contact stress between wheel and rail is believed to cause damage to the rail. The relationship between the contact stress and the radius of the rail is initially based on the Hertz contact theory.
Dilai Chen +3 more
doaj +1 more source
Firm turnover under asymmetric information: Tanzania's agro‐dealer sector
American Journal of Agricultural Economics, EarlyView.Abstract We study firm turnover (i.e., entry and exit) and its consumer implications in a market characterized by asymmetric information. Using a three‐round census of agro‐dealers in Tanzania's Morogoro Region, we document annual firm entry and exit rates of 33% and 17%, respectively.
Alix Naugler +3 more
wiley +1 more source
Design of Traction Calculation and Simulation Platform for Urban Rail Transit
Chengshi guidao jiaotong yanjiu［Objective］ At the initial stage of urban rail transit projects, it is essential to design a traction calculation simulation platform to accurately evaluate the operational indicators of the signaling system and meet engineering requirements.
GENG Peng, LIU Xia, YUAN Chongyang
doaj +1 more source
Corporate ESG Greenwashing: Does Regulatory Proximity Matter?
Business Strategy and the Environment, EarlyView.ABSTRACT Environmental, social, and governance (ESG) greenwashing undermines sustainable development, yet the influence of regulatory proximity on oversight is understudied. By introducing the “distance decay effect” from geoeconomics into ESG misconduct research and using a sample of Chinese listed firms from 2009 to 2022, this study reveals a ...
Weiqi Zhao +4 more
wiley +1 more source
Safety Envelope Management Method for Marshaled Trains Based on Time Delay Protection
Chengshi guidao jiaotong yanjiu[Objective] In flexible marshaled trains, the communication delay between the master railcar, subordinate railcar and ZC (zone controller) exhibits asynchrony, leading to potential issues such as overlapping, misalignment, and discontinuity in the safety
Peng GENG, Peng ZHAO, Yuwei NIE
doaj +1 more source
Shock and Vibration, 2021 In view of the coexistence of wheel profile wear (WPW) and wheel diameter difference (WDD) on an actual subway line, a dynamic analysis method based on coupling between WPW and equivalent in-phase WDD was proposed. Based on the measurements from a subway
H. X. Li +5 more
doaj +1 more source
Full-Scale Model Test of Subway Contact Channel under Mechanical Construction
Applied Sciences, 2023 The mechanical construction method for a subway contact channel has the advantages of a short construction period and high safety, and is more and more being applied in coastal soft-soil areas. In order to explore the suitability of this method in inland
Liping Fan +6 more
doaj +1 more source
Why Some Firms Perceive Climate Risks and Others Do Not—Evidence From the Logistics Sector
Business Strategy and the Environment, EarlyView.ABSTRACT This study explores how companies perceive risks stemming from climate change as a gradual process, focusing on the logistics sector. It advances research on organizational climate risk perception by integrating perspectives on embeddedness and resource configurations. Based on 41 semi‐structured interviews with representatives of 22 logistics
Felix Bücken, Martin Franz
wiley +1 more source
Business Strategy and the Environment, EarlyView.ABSTRACT Circular innovation (CI) research has identified a wide range of circular strategies and design approaches, yet offers limited insight into how CI evolves as a learning process within firms and which governance mechanisms guide this progression. Drawing on organizational learning (OL), this study examines how exploration and exploitation shape
Shamima Haque +2 more
wiley +1 more source
Chengshi guidao jiaotong yanjiuObjective Improving the service level to the passengers and ensuring safety are the core purpose of the facility layout and operation management of urban rail transit station.
FANG Yong +4 more
doaj +1 more source