Results 31 to 40 of about 38,260 (156)

Self-propelled Worm-like Filaments: Spontaneous Spiral Formation, Structure, and Dynamics

open access: yes, 2015
Worm-like filaments that are propelled homogeneously along their tangent vector are studied by Brownian dynamics simulations. Systems in two dimensions are investigated, corresponding to filaments adsorbed to interfaces or surfaces.
Elgeti, Jens   +2 more
core   +1 more source

Research on the Deformation Mechanism of Railway Subgrade under Buried Strike–Slip Fault Dislocation

open access: yesApplied Sciences
With the gradual densification of China’s railway network, more and more railways are inevitably crossing active fault zones. Creep dislocation and stick–slip dislocation of the fault zones can lead to uneven deformation and cracks in the railway ...
Jingwei Liang   +4 more
doaj   +1 more source

Local and Global Information in Obstacle Detection on Railway Tracks [PDF]

open access: yesarXiv, 2023
Reliable obstacle detection on railways could help prevent collisions that result in injuries and potentially damage or derail the train. Unfortunately, generic object detectors do not have enough classes to account for all possible scenarios, and datasets featuring objects on railways are challenging to obtain.
arxiv  

Visual Localization Method for Fastener-Nut Disassembly and Assembly Robot Based on Improved Canny and HOG-SED

open access: yesApplied Sciences
Visual positioning accuracy is crucial for ensuring the successful execution of nut disassembly and assembly tasks by a fastener-nut disassembly and assembly robot.
Xiangang Cao   +5 more
doaj   +1 more source

To build or not to build -- A queueing-based approach to timetable independent railway junction infrastructure dimensioning [PDF]

open access: yesarXiv, 2023
Many infrastructure managers have the goal to increase the capacity of their railway infrastructure due to an increasing demand. While methods for performance calculations of railway line infrastructure are already well established, the determination of railway junction capacity remains a challenge.
arxiv  

How the planned V0 railway line would increase the resilience of the railway network of Hungary against attacks [PDF]

open access: yesAcademic and Applied Research in Military and Public Management Science 18 (3), pp. 109-129. (2019), 2020
The spatial distribution of the railway crossings on the river Danube in Hungary is very uneven. There is only one electrified and double-tracked bridge in the country, the Southern Railway Bridge in Budapest. The \'Ujpest bridge in Budapest only provides connection through line 4 which is not electrified and the Baja bridge is not electrified, too ...
arxiv   +1 more source

Revolutionizing sensing technologies: A comprehensive review of flexible acceleration sensors

open access: yesFlexMat, EarlyView.
This review discusses flexible acceleration sensors based on various operating principles such as triboelectric, capacitive, electromagnetic, piezoelectric, resistive and multimode, incorporating main device parameters, key sensitive materials and innovative structural designs.
Bozhi Wu   +5 more
wiley   +1 more source

Wooden Sleeper Deterioration Detection for Rural Railway Prognostics Using Unsupervised Deeper FCDDs [PDF]

open access: yesarXiv, 2023
Maintaining high standards for user safety during daily railway operations is crucial for railway managers. To aid in this endeavor, top- or side-view cameras and GPS positioning systems have facilitated progress toward automating periodic inspections of defective features and assessing the deteriorating status of railway components.
arxiv  

Upper-bounding bias errors in satellite navigation

open access: yes, 2014
A satellite navigation system for a safety critical application is required to provide an integrity alert of any malfunction; the probability that a navigation positioning error exceeds a given alert limit without an integrity alert is required to be ...
Iwamoto, Takashi
core   +1 more source

Occupational nerve injuries

open access: yesMuscle &Nerve, EarlyView.
Abstract Occupational nerve injuries span a broad array of pathologies and contribute toward functional limitation, disability, and economic impact. Early and accurate recognition, treatment, and management of workplace factors rely on a thorough understanding of the anatomic and biomechanical factors that drive nerve injury.
Sandra L. Hearn   +3 more
wiley   +1 more source

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