Neil Jami Bücher
Nur ad-Din Abd ar-Rahman Jami war einer der größten persischen Dichter des 15. Jahrhunderts und einer der letzten großen Sufi-Dichter. Sein Werk stellt den Höhepunkt sufischer Poesie und Philosophie dar. Seine Verse werden für ihre tiefgründige Spiritualität und literarische Kunstfertigkeit gefeiert.
The objective of this thesis is to develop models and algorithms to plan the purchasing of reusable containers in a closed-loop supply chain where the demand is increasing. We restrict our study to a periodic review process between a single manufacturer and a single supplier. Each item is transported either in a reusable container or in a single-use disposable. Furthermore, a setup cost is paid every time new containers are purchased. Consequently, our model is similar to a lot-sizing problem with return of every item after a fixed duration. We study both cases of a deterministic demand as well as a stochastic demand. In the deterministic setting, we use dynamic programming and minimum linear-cost flows to generate polynomial time algorithms. When the demand is stochastic, we use the Markov decision process framework to develop pseudo-polynomial time heuristics for four different strategies. We show the L-natural-convexity of the cost functions for three strategies to speed up the computations. The thesis concludes with an application on a real-life supply chain.