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RISA Numerical Analysis of the Nonsteady EHL Process in High-Speed Rotating Engine Cam/Tappet Pairs
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this paper, by accounting for the effect of dynamic behavior in valve train mechanisms on the surface contact load of a cam/tappet pair, a full numerical solution of nonsteady EHL for a ...
Macrolevel Traffic Safety Longitudinal Comparison in Shanghai, China
Publisher: ASCE
Abstract: To ensure improvements are made in the parts of the city currently most prone to crashes, this study conducted a 2009–2016 longitudinal comparison of the traffic safety in Shanghai at the level of the traffic analysis zone ...
Spatiotemporal Parallel Convolutional Network Considering Multidimensional Factors for Short-Term Traffic Flow Prediction
Publisher: American Society of Civil Engineers
Abstract: AbstractThis research proposes a spatiotemporal parallel convolutional network (SPCN) model
that accounts for both the interactions between lanes and the impact of weather conditions
in predicting short-term traffic volume. ...
An Accurate Wind Retrieval Method Based on Observing Hydrogen Balloons with Multi-Theodolite Measurements
Publisher: American Meteorological Society
Abstract: The hydrogen balloon is widely used for wind sensing by tracking it with optical theodolites. The traditional theodolite observation (single- and double-theodolite) methods assume that the balloon is a perfect tracer of ...
Operational Design Domain of Automated Vehicles at Freeway Exit Terminals
Publisher: American Society of Civil Engineers
Abstract: With the advancement of automated driving technology, ensuring the operational safety of automated vehicles (AVs) has become a research focus. AVs at freeway exit terminals face high risks due to diverging operations and ...
The Economic Impacts of Subway Introduction on Products of Different Industry Sectors within Suburban Area
Publisher: ASCE
Abstract: Based on the traditional difference-in-differences (DID) model, this research establishes a two-stage DID model to investigate the impact of a subway on the suburban economy. A parallel trend analysis and placebo test are ...
Quantifying Three-Dimensional Macropore Structure and Seepage Characteristics of Representative Elementary Volume for Recycled Aggregate Pervious Concrete
Publisher: ASCE
Abstract: The permeability performance made of recycled aggregate pervious concrete with macropores (M-RAPC) relates greatly to the macropore structure and seepage behaviors. However, the mechanism of the influence of pore structure ...
Three-Dimensional Object Detection with Deep Neural Networks for Automatic As-Built Reconstruction
Publisher: ASCE
Abstract: Automatic three-dimensional (3D) as-built reconstruction for non-Manhattan structures and multiroom buildings remains an industrywide challenge due to complex building environments and high demands for generating volumetric ...
Study on Derailment Mechanism and Safety Operation Area of High-Speed Trains Under Earthquake
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In order to investigate the derailment mechanism and safety operation area of high-speed trains under earthquake, a coupled vehicle-track dynamic model considering earthquake effect is developed, ...
Computational Approach to As-Built Tunnel Invert Survey Based on Processing Real-Time TBM Tracking Data
Publisher: American Society of Civil Engineers