Right to the city is composed of appropriation and participation in urban affairs. Appropriation is realized through movement in the city, presence in it, comfort feeling, and having proper spaces. While urban participation is possible through being involved in urban policy-making, decision-making for physical and spatial issues, urban economy, ownership and control of urban...

induction motors are the most commonly used in the traction industries and electric vehicles, due to their low primary cost, low maintenance costs, and good performance. speed identification is needed for the induction motor drives. however, using of speed sensors in the induction motor drives is associated with problems such as, extra cost, reduced reliability, added mounting space, etc.. ther...

Apart from regular wheel wear such as decreasing wheel diameters and reduced flange thicknesses and heights, wheel flats (WF) and oval wheels (or OOR, Out-Of-Roundness) are the most common wheelset problems for railway vehicles. Within the FP7 Research Project “Saferail”, APT has developed an innovative wheelset monitoring system so-called “Wheel flat and Out of Roundness Monitoring (WORM) syst...

The operation and maintenance is one of the most important territories of the automotive industry. From the mathematical point of view, maintenance is a discrete state space stochastic process without after-effects, so it can be modeled as a Markov-chain. After determination of probability densities of changes of operational states and setting up the transition probability matrix, a matrix-alge...

the present paper aims to investigate the effects of modularity and the layout of subsystems and parts of a complex system on its maintainability. for this purpose, four objective functions have been considered simultaneously: i) maximizing the level of accordance between system design and optimum modularity design,ii) maximizing the level of accessibility and the maintenance space required,iii...