Results 31 to 40 of about 783 (177)
Integrating Image Segmentation and Deep Learning to Improve Radio Frequency Propagation Models
International Journal of Satellite Communications and Networking, EarlyView.ABSTRACT This paper proposes a multi‐sensor approach to improve radio frequency (RF) propagation models, which play a key role in the rapidly expanding field of connected vehicle technology. Focusing on the 1‐ to 20‐GHz frequency range, which is critical for both satellite‐to‐vehicle and base station‐to‐vehicle communications, our study introduces a ...
Jonathan Israel +2 more
wiley +1 more source
CSEE Journal of Power and Energy Systems, 2020 Recently, electric railways have experienced a rapid development causing an increasing power demand. Due to the flexible installation available at trackside land along railways, photovoltaic (PV) generation is suggested as an extension to the traction power supply system (TPSS) in railways.
Cheng, Peng +3 more
openaire +3 more sources
Application Status and Development Trends of DC Ice‐Melting Devices in China's Power Grid
IET Smart Energy Systems, EarlyView.This paper summarises the development history and engineering application status of DC ice‐melting devices (DCIMD) in China, analyses the principles, advantages, disadvantages and adaptability of mainstream topologies and discusses the key problems and corresponding improvement directions.
Ming Lei +6 more
wiley +1 more source
History, EarlyView.Abstract This article offers new perspectives on the relationship between elementary teaching, scientific expertise and the professionalization of the human sciences. Previous scholarship has demonstrated the ready existence of ‘amateur’ science societies in the nineteenth century where cross‐class exchanges were common.
Julia Gustavsson
wiley +1 more source
History, EarlyView.Abstract During the 1960s, Mexico's Institutional Revolutionary Party (PRI) embraced Chinese overtures for a commercial opening as consistent with its anti‐imperialist posture, thereby foreshadowing the diplomatic opening to China in 1972. Yet this professed ideological pluralism was eclipsed by an underlying allegiance to the United States' anti ...
YIXIN TIAN
wiley +1 more source
Determination of Electromagnetic Noise from a Power Supply Substation of Railway Traction Systems
2022 IEEE International Symposium on Electromagnetic Compatibility & Signal/Power Integrity (EMCSI), 2022 This paper aims at determining methods to determine the electromagnetic noise that occurs when supplying electric trains from substations. The supply voltage from the substation and the current absorbed through the supply line by an electric train are analyzed.
Nicolae, Petre-Marian +3 more
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Вестник Научно-исследовательского института железнодорожного транспорта, 2021 Considered are the issues of using electric energy storage system in the traction power supply of direct current of a single-track section. An overview of the main directions of domestic and foreign research in the field of using these systems to ...
V. L. Nezevak
doaj +1 more source
International Journal of Urban and Regional Research, EarlyView.Abstract From desert ski resorts to subtropical Winter Games, there is a global proliferation of ‘mission‐impossible’ mega‐projects. The prevailing frameworks of city branding and urban entrepreneurism fail to explain the political logics behind these seemingly irrational projects.
Yiqiu Liu, Sven Daniel Wolfe
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A study on fault self-recovery of interconnected co-phase traction network for heavy haul railway
机车电传动, 2022 In order to adapt to the continuous growth of freight traffic volume, the heavy haul railways have undergone the transportation capacity upgrading and transformation. The co-phase and bilateral power supply technologies can be adopted to cancel the phase
PENG Ye, WANG Shuai, WANG Kewen
doaj
POPULAR ENTREPRENEURSHIP: A Grammar of Moral Economy in Contemporary Urban Peripheries
International Journal of Urban and Regional Research, EarlyView.Abstract This article examines how popular entrepreneurship operates as a cultural grammar that disrupts established practices of wageless life in urban peripheries. Drawing on four years of ethnographic research conducted in São Paulo, it analyses entrepreneurial discourses not simply as ideological impositions, but as ambivalent mediations of ...
Henrique Costa
wiley +1 more source