Temporal Analysis of GERT Networks

In CPM and PERT network techniques, the temporal analysis includes the determination of the earliest and latest times of occurrence of the individual project events besides the computation of the (distribution of the) project duration. For GERT networks, it is also possible to introduce the concepts of earliest and latest times of activation of nodes. Their meaning, however, is different from that for CPM and PERT networks (because project events may occur several times) and their computation is in general much more complicated (cf. Delivorias (1979a, 1979b), Neumann and Steinhardt (1979a), section 2.5, and Wietek (1983)). Therefore, we will not deal with those concepts in this monograph.