Results 61 to 70 of about 261 (168)

Rethinking ‘Hill‐Valley Divide’ in Darjeeling District, India: An Autoethnographic Approach to Highland Identities

open access: yesStudies in Ethnicity and Nationalism, EarlyView.
ABSTRACT This research examines the Hill‐Valley divide in Darjeeling district, West Bengal, India, where Nepali‐speaking hill communities coexist with Bengali‐speaking valley populations. It argues that this division is a colonial construct, shaped by British policies that romanticised the hills as a ‘mini‐England’ while separating them from the valley
Yalember Dewan
wiley   +1 more source

Artificial Intelligence in Public Procurement: Aligning Operational Capacity, Legitimacy, and Public Value

open access: yesJournal of Business Logistics, Volume 47, Issue 4, October 2026.
ABSTRACT Public procurement is adopting artificial intelligence (AI) more slowly than private‐sector procurement, despite similar operational opportunities. We analyze this gap through Moore's Strategic Triangle (ST), focusing on public value, operational capacity, and legitimacy and support.
Giovanna Culot   +3 more
wiley   +1 more source

Research on a Versatile Wheel Detector Calibration System for Heavy-duty Rail Flaw Detection Vehicles

open access: yesKongzhi Yu Xinxi Jishu
Ultrasonic wheel detectors are key front-end data acquisition components of heavy-duty rail flaw detection vehicles, with their performance directly affecting the quality of collected data, making periodic calibration essential.
HU Liang   +3 more
doaj  

A Method of Trackside Kilometer Post Identification Combined with YOLOv3 Model

open access: yesKongzhi Yu Xinxi Jishu, 2020
In view of poor anti-interference ability and weak generalization of the present trackside identification method, it is unable to adapt to complex background fluctuation along railway.
QIU Xinhua   +3 more
doaj  

Golden weapons and golden fetters: From the gold standard to the new geopolitics

open access: yesThe Economic History Review, Volume 79, Issue 3, Page 900-921, August 2026.
Abstract This paper explores the historical relationship between monetary regimes, security concerns, and geopolitical tensions, particularly focusing on the role of gold. Throughout history, monetary systems have been deeply intertwined with international state systems and security provisions.
Harold James
wiley   +1 more source

Detection of square wave impulse interference in eddy current rail defectograms

open access: yesМоделирование и анализ информационных систем
Traffic safety in rail transport requires continuous monitoring of the rail condition for timely detection and elimination of defects. One of the methods of non-destructive testing of rails is eddy current flaw detection.
Leonid Y. Bystrov   +2 more
doaj   +1 more source

Selected applications of satellite technologies in rail transport

open access: yesArchives of Transport
Global Navigation Satellite Systems (GNSS) are increasingly being used in various modes of transport, including rail transport. When this technology is applied to railway traffic control, it is essential to ensure a high level of safety and reliability.
Marcin Chrzan   +2 more
doaj   +1 more source

Detection of Rail Defects Using NDT Methods. [PDF]

open access: yesSensors (Basel), 2023
Xiong L, Jing G, Wang J, Liu X, Zhang Y.
europepmc   +1 more source

Detection Capability Analysis and Improvement for Transverse Defects in Heavy-Haul Railway

open access: yesKongzhi Yu Xinxi Jishu
During high-speed rail flaw detection by ultrasonic testing (UT), for 75 kg/m rails, an insufficient number of echo signal points in the 70° skewed channel can lead to missed detection of minor transverse defects.
WANG Pin   +3 more
doaj  

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