Abstract:
In our paper we introduce some dynamic mathematical models to perform a
comparative analysis of the reliability of two types of networks: serial-parallel and parallelserial. Cases are analyzed when the number of sub-networks and the number of units in each
sub-network are Power Series Distributed (PSD) random variables (r.v.), but also when
lifetimes are independent, identically distributed r.v. The formulas for calculating the
reliability of the related networks it was deduced. Some examples are analyzed grafically.