Results 41 to 50 of about 15,789,290 (304)

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

Advanced 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, Weipeng Wang, Xuan Cong, Shiyu Wang, Gao Li, Sen Gong, Lin Huang, Hongxin Zeng, Yaxin Zhang, Ziqiang Yang   +9 more
wiley   +1 more source

Analysis of Large-slope Metro Turnout Rail Creeping under Cycling Loads Action

Chengshi guidao jiaotong yanjiu
Objective When turnouts are laid on slope, the longitudinal force increase on the track due to the cyclic braking of trains will cause uneven rail creeping phenomena， resulting in a more complex stress and deformation pattern for the turnout, and even ...
WANG Tian, MA Qiantao, ZHENG Zhao-guang, YANG Jian, FANG Jiasheng, CHEN Rong, XU Jingmang   +6 more
doaj   +1 more source

Improving the activity of waste concrete recycled powder by a mechanical-microwave combing method [PDF]

Railway Sciences
PurposeThe efficient utilization of recycled concrete powder (RCP) has attracted much attention. To break through the limitation of single activation technology of RCP, this study investigates the effects of a mechanical-microwave method on the ...
Henan Shi, Huajian Li, Liangshun Li, Haoliang Dong, Zhen Wang, Wenxiao Ji   +5 more
doaj   +1 more source

The Insistence of Blackness and the Persistence of Antiblackness in Ireland

Australian Journal of Social Issues, EarlyView.
ABSTRACT This paper positions Ireland as a critical site for examining the insistence of blackness and an antiblackness created and sustained through Irish ethnonationalist imaginaries and exclusionary processes. Drawing on connected sociologies and Irish Black Studies, this enquiry argues that antiblackness in Ireland operates as a generational force,
Philomena Mullen
wiley   +1 more source

Assessment of railway vibrations using an efficient scoping model [PDF]

, 2014
Vibration assessments are required for new railroad lines to determine the effect of vibrations on local communities. Low accuracy assessments can significantly increase future project costs in the form of further detailed assessment or unexpected ...
Woodward, P. K., Verlinden, Olivier, Connolly, D. P., Connolly, D.P., Woodward, Peter, Kouroussis, Georges, Forde, M.C., Connolly, David, Forde, M. C., Forde, Michael, Giannopoulos, Antonios; id_orcid, Woodward, P.K., Giannopoulos, A, Forde, MC, Kouroussis, G., Verlinden, O, Giannopoulos, A., Verlinden, O., Woodward, PK, Connolly, DP, Kouroussis, G   +20 more
core   +1 more source

Integrating Remote Sensing, Archaeological Survey and Geophysical Prospections for the Enhancement of Roman Doclea, Montenegro

Archaeological Prospection, EarlyView.
ABSTRACT The Roman city of Doclea is a key archaeological site of Montenegro, valued for its impressive remains and its role in the nation's cultural identity within European and the Mediterranean history. Doclea was the second‐largest city in the province of Roman Dalmatia, a municipium created in the first century ad and named after the Illyrian ...
Tatjana Koprivica, Lucia Alberti, Marilena Cozzolino, Bruna Di Palma, Vincenzo Gentile, Pasquale Merola   +5 more
wiley   +1 more source

Investigation on the rolling contact fatigue cracks initiation of subway fixed frogs based on transient dynamics

Railway Engineering Science
The issue of fatigue damage to rails has become increasingly prominent with the rise in subway traffic and speed. The hazardous space of the turnout frog significantly intensifies the dynamic interaction between the vehicle and the frog rail, leading to ...
Zhaoguang Zheng, Zhiguo Dong, Jiayi Hu, Jingmang Xu, Kai Wang, Ping Wang   +5 more
doaj   +1 more source

An Innovative and Efficient Method for Reverse Design of Wheel-Rail Profiles

Applied Sciences, 2018
Well-designed wheel-rail profiles are not only helpful in achieving expected dynamic vehicle performance but also in extending the service lives of wheels and rails.
Rong Chen, Chenyang Hu, Jingmang Xu, Ping Wang, Jiayin Chen, Yuan Gao   +5 more
doaj   +1 more source

From liquid learning to weaving learning: Negotiating meanings of Children's learning in family travel

British Educational Research Journal, EarlyView.
Abstract Children's learning increasingly extends into everyday informal settings, but what counts as learning in these contexts remains insufficiently understood. Focusing on family travel as a mobile and socioculturally situated informal learning context, this study adopts a sociocultural perspective and uses liquid learning as a sensitising concept ...
Zhuxian (Zoey) Li, Elaine Chiao Ling Yang, Truc H. Le, Charles Arcodia   +3 more
wiley   +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, Zhichao Chen, Muhammad Nadeem, Guanghua Xu, Nader Atawnah   +4 more
wiley   +1 more source