Results 21 to 30 of about 37,933 (294)

Asymmetry in Skipping Enhances Viability Against Control Input Noise

open access: yesAdvanced Robotics Research, EarlyView.
Quadruped animals use asymmetric galloping gaits at high speeds, yet the functional role of this asymmetry remains unclear. This study shows that left–right asymmetry in touchdown angles enhances robustness to control noise. Using a simple two‐legged locomotion model and viability theory, it demonstrates that asymmetric skipping substantially enlarges ...
Yuichi Ambe, Alvin So, Shinya Aoi
wiley   +1 more source

Online Detection Method for Urban Rail Transit Vehicle Wheelset Dimensions Based on Structured Light Image Recognition

open access: yesChengshi guidao jiaotong yanjiu
ObjectiveWith the rapid development of urban rail transit, wheelsets as the critical components of vehicle bogie system, their dimension condition directly impacts train operational safety and stability. Traditional manual static detection methods suffer
Nan CAO   +5 more
doaj   +1 more source

The Effective Use of the Piston Effect, Natural Cold Sources, and Energy Saving in Beijing Subways

open access: yesAdvances in Mechanical Engineering, 2013
With the development of the subway, the energy consumption of subway ventilation and air-conditioning systems is increasing rapidly. To solve this problem, this paper describes the environment of a subway station in Beijing subway line no. 2 from July to
Zhenzhen Li   +4 more
doaj   +1 more source

Air quality monitoring and correlation analysis in public areas of three subway stations in Shanghai

open access: yesShanghai yufang yixue, 2022
ObjectiveTo understand the correlation between air quality and pollutants in three underground subway stations in Shanghai and their influencing factors, in order to provide a reference for improving the ambient air quality of rail transit and enhancing ...
LIU Yongping, ZHANG Lijun, SU Jin
doaj   +1 more source

Simulation of Air flow, Smoke Dispersion and Evacuation of the Monument Metro Station based on Subway Climatology [PDF]

open access: yes, 2014
This research is creating a working laboratory in Newcastle Monument metro station to understand the details of how the over ground climate influences the internal airflow and the impact this has on evacuation strategies.
Thompson, Emine Mine   +2 more
core  

Nanowires Reinforce Oriented Macroporous Aerogels for Rapid Uranium Removal from Acidic Radioactive Wastewater

open access: yesAdvanced Science, EarlyView.
A “reinforced concrete” structural aerogel with directional microchannels is engineered for rapid uranium capture. The interconnected architecture enables ultrafast water permeation, and the nanowire reinforcement yields a 70‐fold increase in mechanical strength.
Ze Liu   +8 more
wiley   +1 more source

Invalid Alarms Suppression Method for Subway Trains 360° Exterior Fault Image Detection System

open access: yesChengshi guidao jiaotong yanjiu
ObjectiveIn subway train 360° exterior fault image detection system, the high proportion of invalid alarms is a significant issue due to factors such as environmental interference and dynamic changes of components.
Yang LIU   +5 more
doaj   +1 more source

Exploring the Intermodal Relationship between Taxi and Subway in Beijing, China

open access: yesJournal of Advanced Transportation, 2018
Taxi is an indispensable mode in the urban public transportation. Although many studies have explored the travel patterns of taxi trips, few have combined taxi and subway to reveal their intermodal relationship.
Shixiong Jiang   +3 more
doaj   +1 more source

A Global Methane Observation System to Reduce Uncertainty for Anthropogenic and Natural Sources and Sinks for Detecting and Attributing Climate Feedbacks

open access: yesAdvanced Science, EarlyView.
Conceptual illustration of a Global Ecosystem Methane Observing System (GEM‐OS) integrating satellites, aircraft, atmospheric networks, and ecosystem measurements to quantify methane emissions from anthropogenic and natural sources. The multi‐scale observing framework improves source attribution, reduces uncertainty in regional methane budgets, and ...
P. Ciais   +32 more
wiley   +1 more source

Subsidy Mechanism for Rail Transit Renewal and Renovation in Japan and the Enlightenment to China

open access: yesChengshi guidao jiaotong yanjiu
[Objective] Drawing on the successful experiences of Japanese government in promoting the rail transit through subsidies can provide relevant cases of practical guiding significance for the establishment of an effective governmental subsidy mechanism in ...
CHEN Yan   +4 more
doaj   +1 more source

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