A data envelopment analysis approach for evaluating high-speed freight transportation efficiency by Paulo Chenrrim, Susana Relvas

Subjects: Get full text

Research on wear and grinding models of high-speed turnouts based on semi-Hertz contact by Jincheng Li, Yayun Qi, Pengpeng Wu, Junjun Ding, Haohao Ding

Subjects: Get full text

Simulation Analysis of Air Distribution in the Public Area of Single-Span Arch-Shaped Underground Station under the Centralized Air Return Mode by FENG Rao, LUO Yanping, LI Bijia, HU Zilin

Subjects: “…urban rail transit…”
Get full text

Actual walking distance vs. Perceived walking distance: Relationship and impact on determining acceptable walking distances to stations of the Bangkok Metro by Maytarvut Seehamart, Suthatip Pueboobpaphan, Rattaphol Pueboobpaphan

Subjects: Get full text

Research on expansion joint for high-speed railway long-span bridges in China by Hui Guo, Jinzhou Jiang, Suoting Hu, Chun Yang, Qiqi Xiang, Kou Luo, Xinxin Zhao, Bing Li, Ziquan Yan, Liubin Niu, Jianye Zhao

Subjects: Get full text

Protection Measures for Shield Tunneling Closely Under-passing Operating Metro Tunnels in Water-rich Soft Soil Area by MA Xifeng, JIN Hua, ZHOU You, CHEN Shaobo, WANG Yu, WU Yaojie

Subjects: “…urban rail transit…”
Get full text

RESEARCH ON MULTI FLEXIBLE BODY DYNAMIC CHARACTERISTICS OF LIFTING MECHANISM OF NEUTRON STRESS SPECTROMETER by LI YongBo, WU YunXin, GONG Hai, LI Yang

“…Outer cylinder take up the largest proportion of the deformation in X direction,which is 75. 8%,middle cylinder take up the largest proportion of the deformation in Y direction,which is 91. 32%,inner cylinder take up the largest proportion of the deformation in Z direction,which is 89. 36%. Of eight guide rails of lifting mechanism,four guide rails between inner and middle cylinder are under uniform load,other four guide rails between middle and outer cylinder are under non-uniform load. …”
Get full text

Dynamic Response Analysis of an Asymmetric Coupled Vehicle-Track System Generated by Voided Elastic Two-Block Sleeper by Zhenxing He, Xinwen Yang

“…For the track system, the rails and the concrete two-block sleepers are the main vibration components. …”
Get full text

Study of Suspension Parameters Matching to Enhance Vehicle Ride Comfort on Bump Road by Jin Gao, Xiaoping Qi

“…The results show that longitudinal ΔRmsLocal and ΔRmsGlobal of the seat rails are influenced by the bushings mostly, while the vertical ΔRmsLocal and ΔRmsGlobal of the seat rails are influenced by the spring and shock absorber mostly. …”
Get full text

Operation and Control of an Active Power Collector for Roadside Feeding Electric Road System by Saleh A. Ali, Volker Pickert, Mohammed A. Alharbi, Handong Li, Haris Patsios

“…The PCU is seamlessly integrated within the wheel structure of an EV using the concept of a stationary-hub wheel, enabling conductive power transfer from roadside conduction rails while the vehicle is in motion. The PCU is equipped with various features designed to maintain the contact force (CF) with the conduction rails, effectively handle instances of wheel bouncing and vibrations, and ensure a consistently smooth dynamic power transfer. …”
Get full text

Modeling Geomagnetic Interference on Railway Signaling Track Circuits by D. H. Boteler

“…This paper develops a new model for track circuit operation that includes the induced geoelectric fields produced by geomagnetic field variations. Rails are modeled as transmission lines with series impedance given by the rail resistance and parallel admittance determined by the current leakage from the rail through the ballast to ground. …”
Get full text

Dynamic Stress of Subgrade Bed Layers Subjected to Train Vehicles with Large Axle Loads by Fang Xu, Qi Yang, Wenjie Liu, Wuming Leng, Rusong Nie, Huihao Mei

“…A 3D train-track-subgrade interaction finite element (FE) model was constructed using the ABAQUS code, where different vertical irregular track spectra were simulated by modifying the vertical node coordinates of the FE mesh of the rail. Then, the dynamic stresses in the subgrade bed layers subjected to heavy-haul trains were studied in detail. …”
Get full text

Channel estimation method for massive MIMO system in Rice channel by Xueli WANG, Haiquan WANG, Xiao LI, Dakuan YANG

“…The high-speed mobile transportations,such as high-speed rails,pilot-less airplanes,are mostly in the open areas.Due to the existence of line of sight (LOS) propagations,the Rayleigh fading model can not describe the channels very well in these environments.The Rice fading channel model is constituted of a LOS component and a multiple-path component,which can characterize the channels more accurately.Based on the Rice model,the improved channel estimation methods and corresponding decoding methods were proposed based on the superimposed training sequences for massive multiple input multiple output (MIMO) system.The improved channel estimation methods were divided into two cases:the LOS component was known to the receiver and the other was unknown.The numerical simulation results show that the superiority of the proposed methods.…”
Get full text

First-in-Men Online Adaptive Robotic Stereotactic Body Radiation Therapy: Toward Ultrahypofractionation for High-Risk Prostate Cancer Patients by Victor J. Brand, MD, Maaike T.W. Milder, PhD, Miranda E.M.C. Christianen, MD, PhD, Kim C. de Vries, MD, Mischa S. Hoogeman, PhD, Luca Incrocci, MD, PhD, Femke E. Froklage, MD, PhD

“…Conclusions: Online adaptive stereotactic body radiation therapy using CyberKnife with integrated CT-on-rails is clinically feasible for prostate cancer patients with seminal vesicles included in the target volume. …”
Get full text

Un Louvre pour les artistes vivants ? Modalités d’appropriation du musée par et pour les artistes du xixe siècle by Claire Dupin de Beyssat

“…Despite their gradual exclusion from the picture rails of the Louvre, living artists – an expression that was omnipresent during this period – would, throughout the nineteenth century, appropriate the Louvre: its space, its museographical organisation and its ambitions. …”
Get full text

Development of a Novel Squirrel-cage Doffing Robot by Yang Sicheng, Zhang Wenzeng, Cao Liguo

“…The squirrel-cage doffing mechanism mainly consists of grippers,vertical rails,driving shafts,driving chains,driving wheels and a spatial cam. …”
Get full text

TESTING RESEARCH OF STRESS AND DEFORMATION OF WELDED STRUCTURE BODY by WEI DongHai, LI KeRui, DU Bing, CHENG Peng

“…The maximum deformation of the guide rails is 2882. 07 μm,which means obvious deformation. …”
Get full text

Transporte, modernización urbana y negociación: el Ferrocarril Urbano de Santiago 1873-1897 by Elisabet Prudant Soto

“…The closing date of the research coincides with the decline of the Company that monopolized the service of transport on rails in Santiago and with the entry of transnational capitals to the industry of the urban mobility in Chile.…”
Get full text

Two-degree-of-freedom Grinding Wheel Profile Modification Manipulator and Its Error Compensation by Bin Yang, Xiaodi Huang, Yongcheng Huang

“…The modification manipulator consists of two linear rails of the horizontal guideway and the vertical guideway. …”
Get full text

Visual Control System of a Spraying Robot for Hyphantria cunea Larva Nets by Ying Zhao, Qun Sun, Chong Wang, Cuihua Zhang

“…The system realized spatial two-dimensional motions driven by step motors on linear guide rails. Images were processed in real-time to extract the net curtain targets defined using the border area, and the optimal spraying position was then determined. …”
Get full text