This paper deals with lot sizing and scheduling for a single-stage production System where setup costs and times are sequence dependent. A large bücket mixed integer programming (MIP) model is formulated which considers only efficient sequences. A tailor-made enumeration method of the...

Die Losgrößen- und Ablaufplanung stellt ein in PPS-Systemen wiederholt zu lösendes Problem dar. Wir zeigen zunächst mit Hilfe eines einfachen Beispiels, welche Probleme aus der Vernachlässigung der Abhängigkeiten innerhalb einer mehrstufigen Erzeugnisstruktur entstehen. Anschließend...

This paper deals with lot sizing and scheduling for a single-stage production System where setup costs and times are sequence dependent. A large bücket mixed integer programming (MIP) model is formulated which considers only efficient sequences. A tailor-made enumeration method of the...

Lotsizing and scheduling comprises activities which have to be done repeatedly within MRP-systems. First, we show via a simple example the deficiencies arising within the MRP-context by neglecting the interrelationships of multi-stage systems. Second, we propose a new model for multi-item,...