Results 61 to 70 of about 414,188 (295)

Livestock Tango: U.S. and Latin America Dance Together, but Who Will Lead?

Applied Economic Perspectives and Policy, EarlyView.
ABSTRACT This study examines the competitiveness between Latin American and U.S. livestock and meat sectors. We employ a computable general equilibrium modeling framework to evaluate two scenarios: coordinated improvements in Latin American productivity, transport efficiency, and market access (Scenario I), and the minimum productivity gains required ...
Taís C. Menezes, Amanda M. Countryman, Dustin L. Pendell   +2 more
wiley   +1 more source

A Fault Diagnosis Method for Planetary Gearboxes Based on IFMD

Shock and Vibration
The vibration signal from the planetary gearbox exhibits nonlinear and impulsive characteristics amidst strong noise, impeding the effective extraction of fault information and compromising the accuracy of fault diagnosis.
Fengfeng Bie, Xueping Ding, Qianqian Li, Yuting Zhang, Xinyue Huang   +4 more
doaj   +1 more source

Analyzing the Passenger Flow of Urban Rail Transit Stations by Using Entropy Weight-Grey Correlation Model: A Case Study of Shanghai in China

Mathematics, 2022
In this paper, the factors influencing the passenger flow of rail transit stations in Shanghai of China are studied by using the entropy weight-grey correlation model.
Pei Yin, Jing Cheng, Miaojuan Peng
semanticscholar   +1 more source

When the River Runs Low: Heterogeneous Impacts of Transportation Disruptions on Local Grain Basis

Agribusiness, EarlyView.
ABSTRACT A substantial share of U.S. soybean and corn exports from the Midwest moves by barge along the Mississippi River system to export terminals in the Louisiana Gulf. Transportation costs between Midwestern grain elevators and export terminals create a wedge between prices at these locations, and shocks to these costs are partially passed on to ...
Yuan Zhang, Andrew E. Anderson, Nicholas J. Pates, Eunchun Park   +3 more
wiley   +1 more source

Vibration Analysis of Traction Drive System Components Based on the Field Test for High-Speed Train

Journal of Advanced Transportation, 2023
The traction drive system of a high-speed train is the key subsystem of a high-speed train, which controls the driving and braking of the train through electromechanical coupling, and determines the running speed, power quality, and comfort of the train.
Pingbo Wu, Chunyuan Song, Xun Wang, Sheng Qu, Hao Wu   +4 more
doaj   +1 more source

Multimodal Quad‐Finger Soft Robotic Hand With Dual‐Chamber Origami Actuator for Large‐Workspace Manipulation

Advanced Intelligent Systems, EarlyView.
A multimodal quad‐finger soft robotic hand (QDO hand) uses dual‐chamber straight–curved origami prismatic (SCOP) origami actuators. By coordinating positive and negative pressurization in the two chambers, each finger produces axial extension, contraction and bidirectional bending.
Qinlin Tan, Sipeng Zhou, Yanlin Chen, Tianqi Yang, Xiangyu Chu, Sicong Liu, Raymond Kai‐Yu Tong   +6 more
wiley   +1 more source

Analysis of modal frequency optimization of railway vehicle car body

Advances in Mechanical Engineering, 2016
High structural modal frequencies of car body are beneficial as they ensure better vibration control and enhance ride quality of railway vehicles. Modal sensitivity optimization and elastic suspension parameters used in the design of equipment beneath ...
Wenjing Sun, Jinsong Zhou, Dao Gong, Taiwen You   +3 more
doaj   +1 more source

PPO‐Based Reinforcement Learning for the Semi‐Active Vibration Control of MDOF Platform

AI &Innovation, EarlyView.
ABSTRACT Aiming at the coupled vibration problem of a multi‐degree‐of‐freedom (MDOF) vibration isolation platform under eccentric excitation, this paper proposes a semi‐active vibration control strategy based on Proximal Policy Optimization (PPO) ‐based reinforcement learning (PPO RL).
Wei Huang, Jian Xu
wiley   +1 more source

Respirable Dust Exposure in Western Australian Mining: Trends, Variability, and Implications for Occupational Health

American Journal of Industrial Medicine, EarlyView.
ABSTRACT Background Mining workers are exposed to a range of respiratory hazards, including respirable dust. While exposure to respirable crystalline silica in the mining industry has been found to be common, less is known about trends in measured levels of exposure to respirable dust overall.
Renee N. Carey, Susan Peters, Nicholas de Klerk, Fraser Brims, Peter Franklin   +4 more
wiley   +1 more source

Culturally Safe Assistive Technology Provision in Australia: Concept Mapping Perspectives From Aboriginal and Torres Strait Islander People

Australian Journal of Social Issues, EarlyView.
ABSTRACT Disparities in Assistive Technology (AT) access exist for Aboriginal and Torres Strait Islander peoples despite recent policy reforms. This paper brings together First Nations and Western academic ways of being, knowing and doing to deliver an AT practice analysis based upon primary data from two research reports into the cultural safety of AT
Shane Hearn, Vanessa Langenberg, Kristy Harper, Libby Callaway, Hilary O'Connell, Eleanor Kennett‐Smith, Natasha Layton   +6 more
wiley   +1 more source