We consider the multi-mode resource-constrained project scheduling problem. The focus is on an algorithm which is supposed to find a makespan optimal solution. This algorithm has been presented in a recent paper by Speranza and Vercellis. The correctness of the algorithm is examined. Moreover,...

A new model is presented for capacitated lot-sizing with sequence dependent setup costs. The model is solved heuristically with a backward oriented method; the sequence and lot-size decisions are based on a priority rule which consists of a convex combination of setup and holding costs. A...

Verschiedene Prognosen weisen darauf hin, daß das Markenwertkonzept zu den einflußreichsten Themen der nächsten zehn Jahre innerhalb des Marketings werden wird. Die hier präsentierte Studie untersucht, für welche Zwecke der Markenwert verwendet werden kann, auf welche inhaltlichen...

The discrete lotsizing and scheduling problem with setup-times is transformed into a single-machine scheduling problem, denoted as batch sequencing problem, which integrates sequence-dependent setups as well. The relationship between the lotsizing and the batch sequencing problem is analyzed....

We consider the classical resource-constrained project scheduling problem (RCPSP). The paper gives a detailed algorithmic description and provides theoretical results on two widely known problem specific heuristics: The serial and the parallel scheduling scheme. An in-depth computational study...

In machine tool assembly several make-to-order products have to be manufactured simultaneously in a multi-stage production system. Due to customer requirements batches are very small. A process plan specifies the neccessary machines, tools, auxiliary devices as well as the operations to be...

This contribution presents two heuristic approaches for multi-level, single-machine lot sizing and scheduling. The first one is a variant of a so-called randomized regret based heuristic which is assumed to be the fastest available method for this particular class of problems. The second...

Verschiedene Prognosen weisen darauf hin, daß das Markenwertkonzept zu den einflußreichsten Themen der nächsten zehn Jahre innerhalb des Marketings werden wird. Die hier präsentierte Studie untersucht zunächst, für welche Zwecke der Markenwert verwendet werden kann und welche Anforderungen...

We review the well-known RSM priority rule to solve the resource constrained project scheduling problem. A detailed analysis of this rule reveals that it is based on assumptions which do not hold in general and hence might lead to poor solutions. Consequently, an improved RSM priority rule is...

This contribution deals with dynamic, capacitated, multi-level lot sizing and scheduling. The basic assumption is that for each item there is exactly one machine that this item can be manufactured on but no two items share a common machine. Finding an optimal solution with a greedy algorithm...