This thesis has been motivated by intracellular transport phenomena, such as kinesins and myosins moving along cytoskeletal filaments or ribosomes along messenger RNA. In both cases molecular motors move uni-directionally along a one-dimensional track. This motion is driven by the free energy released in the chemical hydrolysis reaction of ATP (adenosine-triphosphate). It drives conformational ...

in this paper, the main factors in the analysis of the railway concrete sleepers areinvestigated and new recommendations are made in order to improve the accuracy of the currentpractices in analysis of the railway track system. first, a comprehensive literature survey isconducted, then, fem models for a railway track system are developed and used to discuss andevaluate the assumptions commonly ...

Principle of Swarm Intelligence has recently found widespread application in formation control and automated tracking by the automated multi-agent system. This article proposes an elegant and effective method inspired by foraging dynamics to produce geometric-patterns by the search agents. Starting from a random initial orientation, it is investigated how the foraging dynamics can be modified t...

Abstract Track–vehicle severe interaction on track with small curve radius results in rail wear and corrugation, wheel polygonization, which drain considerable resources for grinding wheels re-profiling metro lines. To reduce the damage caused by track-vehicle interaction, paper analyzes reasons leading to then proposes an architecture of a vehicle independently rotating driven directly permane...

In this work, the authors present a detailed train-track interaction model of long freight train operation to predict long-term rail surface damage. addition vehicles and track, intermediate maintenance actions in form cyclic grinding passes have also been modelled according European standards realistically represent evolving wheel-rail interface. The influence longitudinal dynamics inter-vehic...