In reverse logistics networks, products (e.g., bottles or containers) have to be transported from a depot to customer locations and, after use, from customer locations back to the depot. In order to operate economically beneficial, companies prefer a simultaneous delivery and pick-up service....

In the area of reverse logistics, remanufacturing has been proven to be a valuable option for product recovery. In many industries, each step of the products' recovery is carried out in lot sizes which leads to the assumption that for each of the different recovery steps some kind of fixed costs...

Background: The remanufacturing plan of perfect cost makes reference to the remanufacturing plan of an optimal solution of the economic lot-sizing problem with remanufacturing (ELSR). In this paper, we address the problem of determining the quantities of the remanufacturing plan of perfect cost...

The remanufacturing industry as a whole and the automotive sector in particular have, over the years, proven to be beneficial to the environment and economically lucrative to the companies involved as well as to their customers. However, remanufacturing is associated with complicating...

The multiple-choice nested knapsack problem (MCKP) is a generalization of the ordinary knapsack problem, where the set of items is partitioned into classes. The binary choice of selecting an item is replaced by taking exactly one item out of each class of items. Due to the fact that the MCKP is...

Die Vorteile einer Kreislaufwirtschaft sind für die Schweiz aufgrund des beschränkten Ressourcenvorkommens besonders gross. Die Resultate der vorliegenden Studie zeigen jedoch, dass der Transformationsprozess auf Unternehmensebene noch nicht weit fortgeschritten ist. Zudem gibt es Hinweise,...

Auf dem Weg zur Klimaneutralität sehen sowohl der europäische Green Deal als auch der aktuelle Koalitionsvertrag mit der geplanten "Nationalen Kreislaufwirtschaftsstrategie" eine Kreislaufwirtschaft als eine zentrale Maßnahme, bei der die gesamte Industrie mobilisiert wird. Über eine...

We present a new model formulation for a multi-product lot-sizing problem with product returns and remanufacturing subject to a capacity constraint. The given external demand of the products has to be satisfied by remanufactured or newly produced goods. The objective is to determine a feasible...