In a recent paper, Hoque (2011) developed two single-vendor multi-buyer models with synchronization by transferring the vendor′s lot with equal and/or unequal sized batches. He reported that his proposed models lead to significant cost reductions when compared to the existing related ones in...

Bei dem ifo Konjunkturtest Verarbeitendes Gewerbe werden auch Aspekte der Lagerhaltung und des Auftragsbestands abgefragt. Der Artikel wirft einen Blick auf diese Variablen und den Zusammenhang zwischen diesen. Es zeigt sich, dass auf oberster aggregierter Ebene das Fertigwarenlager und der...

This paper considers model uncertainty for multistage stochastic programs. The data and information structure of the baseline model is a tree, on which the decision problem is defined. We consider “ambiguity neighborhoods” around this tree as alternative models which are close to the...

In this study, we focus on inventory management issues under simultaneously horizontal (equivalently inter-brand) and vertical (equivalently intra-brand) substitution. The analysis is divided into two distinct scenarios: centralized inventory management, where all brands are managed by a central...

The stochastic variability measures the degree of uncertainty for random demand and/or price in various operations problems. Its ordering property under mean-preserving transformation allows us to study the impact of demand/price uncertainty on the optimal decisions and the associated objective...

This paper addresses an optimal inventory control in a supply chain in which customers arrive at a facility according to a Poisson process and the facility provides service which takes exponential amounts of time, using items supplied by an outside supplier with exponential lead time process....

As supply chain costs constitute a large portion of hospitals’ operating expenses and with $27.7 billion spent by the US hospitals on drugs alone in 2009, improving medication inventory management provides a great opportunity to decrease the cost of healthcare. This study investigates...

We consider a discrete-time inventory system for a perishable product where demand exists for product of different ages; an example of such a product is blood platelets. In addition to the classical costs for inventory holding, outdating, and shortage, our model includes substitution (mismatch)...

This paper generalizes the automated innovization framework using genetic programming in the context of higher-level innovization. Automated innovization is an unsupervised machine learning technique that can automatically extract significant mathematical relationships from Pareto-optimal...

We study the location-inventory model as introduced by Teo et al. (2001) to analyzethe impact of consolidation of distribution centers on facility and inventory costs. We associate a cooperative game with each location-inventory situation and prove that this game has a non-empty core for...