Results 21 to 30 of about 38,794 (148)
Self-propelled Worm-like Filaments: Spontaneous Spiral Formation, Structure, and Dynamics
, 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
Applied SciencesWith 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
The Structural Design and Optimization of a Railway Fastener Nut Disassembly and Assembly Machine
MachinesDuring the maintenance of railway fasteners, there are issues with the current nut disassembly and assembly operation, including low efficiency, heavy reliance on manual labor, and high physical strain. A mechanical device has been designed to move along
Xiangang Cao +5 more
doaj +1 more source
Local and Global Information in Obstacle Detection on Railway Tracks [PDF]
arXiv, 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
To build or not to build -- A queueing-based approach to timetable independent railway junction infrastructure dimensioning [PDF]
arXiv, 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
Upper-bounding bias errors in satellite navigation
, 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
Applied SciencesVisual 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
Recent advances in embedded technologies and self‐sensing concrete for structural health monitoring
Structural Concrete, EarlyView.Abstract Fully embedded and spatially diffuse sensors are central to the advancement of civil and construction engineering. Indeed, they serve as an enabling technology necessary for addressing the current challenges associated with through‐life management and structural health monitoring of existing structures and infrastructures. The need to identify
Marco Civera +2 more
wiley +1 more source
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Mycorrhizal symbiosis, specifically arbuscular mycorrhiza, is one of Earth's oldest and most widespread symbiosis. Existing evidence suggests that plant species differ in their associations with mycorrhizal partners, with different species reported to be always ...
Kadri Koorem +9 more
wiley +1 more source
Wooden Sleeper Deterioration Detection for Rural Railway Prognostics Using Unsupervised Deeper FCDDs [PDF]
arXiv, 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