from the time that civil engineers have used steel in building structures, they tried to increase its strength so as to produce more economic and lighter structures by using more elegant sections. increase of steel strength is not always useful for all members of a steel structure. in some members under certain conditions, it is needed to reduce the strength as much as possible to improve the b...

In the newest generation of DSL systems crosstalk is the dominant source of performance degradation. Many crosstalk cancellation schemes have been proposed. These schemes typically employ some form of co-ordination between modems and lead to large performance gains. The use of crosstalk cancellation means that power allocation should be viewed as a multi-user problem. In this paper we investiga...

In this paper we study diagonal quantum channels and their structure by proving some results giving most applicable instances of them. Firstly, it is shown that action every channel on pure state from computational basis a convex combination states determined transition probabilities. Finally, using the Cholesky decomposition presented an algorithmic method to find explicit form for Kraus opera...