New resource concepts in project scheduling including multi-site resources with transportation network

In this paper we present a review of the new concepts of resource categories, motivated by practical situations, which have appeared in the project scheduling theory over the last decade. A basic resource classification from the point of view of resource constraints, divisibility, and preemptibility is presented. A new category of multi-site resources is introduced, and a multi-more resource-constrained project scheduling problem with multi-site resources and transportation network is defined.