Condition monitoring of power electronics is gaining interest as expends to mission-critical applications. This paper offers a preliminary experimental study the viability using S-parameters and time-domain reflectometry measurements monitor degradation module. To this end, were performed on standard high current module which was artificially aged by cutting wire bonds one one. The demonstrates...

A monoid S satisfies Condition (A) if every locally cyclic left S-act is cyclic. This condition first arose in Isbell’s work on left perfect monoids, that is, monoids such that every left S-act has a projective cover. Isbell showed that S is left perfect if and only if every cyclic left S-act has a projective cover and Condition (A) holds. Fountain built on Isbell’s work to show that S is left ...

The concept of redevelopment is accompanied by actions and forecasts to improve the quality of the physical-spatial environment inthe cities, that is by the emergence of new facilities and conditions, improving the spatial environment is achieved. This requirement occurs when the coherence, coordination and the performance of the urban area is diminishing and is not responsive to the requiremen...