Results 131 to 140 of about 7,526 (294)

Joint optimal train regulation and passenger flow control strategy for high-frequency metro lines

, 2017
To improve the headway regularity and commercial speed of high-frequency metro lines with overloaded passenger flow, this paper systematically investigates a joint optimal dynamic train regulation and passenger flow control design for metro lines.
Yang, Lixing, Gao, Ziyou, Li, Shukai, Dessouky, Maged M.   +3 more
core   +1 more source

Thermal‐induced fracture evolution and acoustic signature of Beishan granite: Insights into tensile strength of barrier system for high‐level radioactive waste disposal

Deep Underground Science and Engineering, EarlyView.
The tensile strength of granite, a proposed host for nuclear waste, degrades severely above 400°C. We link this to specific microcracking patterns captured by acoustic emission, establishing a scientific basis for assessing repository safety under thermal load.
Wei Zeng, Shijie Li, Xiaozhao Li, Zhen Huang, Shangtong Yang, Wentao Xu, Biao Wang, Yun Wu   +7 more
wiley   +1 more source

Research and application of flexible starting method for metro trains with permanent magnet motors based on PI control

机车电传动
To further improve the performance and capacity of metro systems and ensure fast and smooth train starting, typically characterized by shortened starting durations and reduced jerks during starting, this paper proposes a flexible starting method for ...
LIU Zhicheng, CHEN Xijun, HE Ye, HU Hui
doaj  

Advances in vital‐sign prediction and early‐warning models for underground coal mine workers integrating environmental factors

Deep Underground Science and Engineering, EarlyView.
This review synthesizes advances in predicting miners' vital signs by integrating environmental monitoring (dust, temperature, and gas) with physiological data. It highlights multi‐source data fusion techniques and early‐warning models for enhanced occupational safety in underground coal mines.
Junji Zhu, Dawei Cui, Yingjie Liu, Yuntao Liang, Yue Zhang   +4 more
wiley   +1 more source

First train schedule optimization for metro systems considering minimum adjustment cost for special event scenarios

International Journal of Transportation Science and Technology
During special events, some metro lines and stations may alter their first train schedules to an earlier time, while others remain unchanged. These adjustments can result in longer transfer waiting times for passengers, negatively impacting the overall ...
Wei Li, Ruicai Peng, Qin Luo, Yihong Mo
doaj   +1 more source

São Paulo bus lines connecting informal settlements to metro/train stations

Bus lines which satisfy the following criteria: it must intersect an informal settlement and intersect a train/metro station. The train/metro stations are buffers of 50m.THIS DATASET IS ARCHIVED AT DANS/EASY, BUT NOT ACCESSIBLE HERE.
PEREZ, Y (via Mendeley Data)
core   +1 more source

Carbon emission assessment of tunnel infrastructures: From construction to operation

Deep Underground Science and Engineering, EarlyView.
This study develops a lifecycle carbon accounting framework for tunnel infrastructures, covering design, construction, operation, maintenance, and dismantling. Applied to a subsea tunnel case, the framework reveals the carbon emission distribution among four typical tunnel types and highlights potential carbon offset methods for low‐carbon tunnel ...
Luyuan Long, Wout Broere, Xuehui Zhang, Tian Xia, Richard de Nijs   +4 more
wiley   +1 more source

Coordinated Optimization of Passenger Flow Control and Train Skip-Stop Strategy in Metro Systems Incorporating Reservation

Vehicles
Peak-hour congestion in metro systems poses significant challenges to operational reliability and passenger experience. This study investigates a coordinated operational strategy that integrates passenger flow control, reservation-based entry, and skip ...
Xiaoya Gao, Jiaxin Li, Xujie Feng
doaj   +1 more source

Moving model analysis on the transient pressure and slipstream caused by a metro train passing through a tunnel. [PDF]

PLoS One, 2019
Meng S, Zhou D, Wang Z.
europepmc   +1 more source

Upper bound limit analysis of coral reef limestone cavern roof stability incorporating a tension‐shear failure mechanism with tensile‐strength cut‐off

Deep Underground Science and Engineering, EarlyView.
For the roof of coral reef limestone caverns, a novel tension‐shear composite failure mechanism was developed. The most critical tensile crack model was identified using a hybrid optimization algorithm, and the stability of the cavern roof was analyzed accordingly.
Dongsheng Xu, Chenxu Li, Chuantan Hou
wiley   +1 more source