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 ...

‎there is a flatness property of acts over monoids called condition $(pwp)$ which‎, ‎so far‎, ‎has received‎ ‎much attention‎. ‎in this paper‎, ‎we introduce condition gp-$(p)$‎, ‎which is a generalization of condition $(pwp)$‎. ‎firstly‎, ‎some  characterizations of monoids by condition gp-$(p)$ of their‎ ‎(cyclic‎, ‎rees factor) acts are given‎, ‎and many known results are generalized‎. ‎more...