Results 31 to 40 of about 215,344 (356)

Atrial Fibrillation Detection Algorithm Based on Graph Convolution Network

IEEE Access, 2023
Atrial fibrillation (AF) is a common type of arrhythmia with a high incidence and risk, and it is difficult to monitor. Deep learning-based algorithms for AF detection have made preliminary progress, with Recurrent Convolution Neural Networks (RCNN ...
Hua Ma, Lingnan Xia
doaj   +1 more source

On the feasibility of Bluetooth, Zigbee and IEEE 802.15.4 technologies on board high speed trains [PDF]

, 2011
This paper studies the feasibility of using low-power wireless technologies such as Bluetooth, IEEE 802.15.4 and ZigBee in high-speed railway scenarios that involve bidirectional land-to-train communication.
Alonso Zárate, Luis Gonzaga, Higuera Portilla, Jorge Eduardo, Kartsakli, Elli, Valenzuela González, José Luis   +3 more
core  

Wide Band Propagation in Train-to-Train Scenarios - Measurement Campaign and First Results [PDF]

, 2017
Within the next decades the railway systems will change to fully autonomous high speed trains (HSTs). An increase in efficiency and safety and a reduction of costs would go hand in hand.
Andreas Lehner, Benjamin Siebler, Damini Gera, Fabrizio Tavano, Maurizio d'Atri, Mohammad Soliman, Paul Unterhuber, Stephan Sand, Thomas Strang   +8 more
core   +1 more source

Thermally Programmable Two‐Port Non‐Hermitian Acoustic Metastructure for Broadband and Direction‐Dependent Absorption

Advanced Science, EarlyView.
A thermally programmable two‐port non‐Hermitian acoustic metastructure is presented, where temperature acts as a non‐geometric tuning variable. Thermal modulation reconfigures impedance matching and loss‐leakage coupling, enabling exceptional‐point driven, broadband, and direction‐dependent sound absorption without requiring geometric reconfiguration ...
Zichao Guo, Zhendong Li, Ziping Lei, Zirui Yang, Kexin Zeng, Zheng Fan, Zhonggang Wang   +6 more
wiley   +1 more source

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

Effect of Surface Hardening on Dynamic Frictional Rolling Contact Behavior and Degradation of Corrugated Rail

Shock and Vibration, 2019
The present study was undertaken to evaluate the effect of surface hardening technology on dynamic frictional rolling contact behavior and degradation of corrugated rail in Shenzhen.
Yuan Gao, Jingmang Xu, Ping Wang, Yibin Liu   +3 more
doaj   +1 more source

A Novel Method for Calculating the Radiated Disturbance from Pantograph Arcing in High-speed Railway [PDF]

, 2017
Pantograph arcing is a key electromagnetic disturbance source to affect train control system in high-speed railway. Since the characteristics of pantograph arcing is related to train speed, it is necessary to investigate effective numerical modeling and ...
Andy Marvin, Eva Karadimou, Hefei Cao, Lan Ma, Rob Armstrong, Yinghong Wen   +5 more
core   +1 more source

Railway superstructure for high-speed rails

Acta Polytechnica CTU Proceedings, 2021
The construction of the track is solved as a conventional (with track ballast) or as a ballastless track (without track ballast). When deciding on the choice of the most suitable track design for high-speed rail, it is necessary to emphasize that with increasing line speed, the requirements for the quality of the track geometry increase, including the ...
Lukáš Týfa, Jan Kruntorád, Ondřej Tomaschko   +2 more
openaire   +3 more sources

Degeneracy Sensing Light Detection and Ranging‐Inertial Simultaneous Localization and Mapping with Dual‐Layer Resistant Odometry and Scan‐Context Loop‐Closure Detection Backend in Diverse Environments

Advanced Intelligent Systems, EarlyView.
This paper presents a degeneracy‐aware light detection and ranging (LiDAR)‐inertial framework that enhances LiDAR simultaneous localization and mapping performance in challenging environments. The proposed system integrates a dual‐layer robust odometry frontend with a Scan‐Context‐based loop‐closure detection backend.
Haoming Yang, Liye Zhao, Xukai Ding, Wenjun Li, Kehao Qi   +4 more
wiley   +1 more source

The Insistence of Blackness and the Persistence of Antiblackness in Ireland

Australian Journal of Social Issues, EarlyView.
ABSTRACT This paper positions Ireland as a critical site for examining the insistence of blackness and an antiblackness created and sustained through Irish ethnonationalist imaginaries and exclusionary processes. Drawing on connected sociologies and Irish Black Studies, this enquiry argues that antiblackness in Ireland operates as a generational force,
Philomena Mullen
wiley   +1 more source