We consider an online multi-item retailer with multiple fulfillment facilities and finite inventory, with the objective of minimizing the expected shipping cost of fulfilling customer orders over a finite horizon. We approximate the stochastic dynamic programming formulation of the problem with...

Disputes over penalties for breach of contract are often solved in court. A simple model shows how inefficient courts may induce public buyers to refrain from enforcing penalties for late delivery to avoid litigation, inducing sellers to delay. Using a large dataset on Italian public...

This work aims at investigating the influence of picking batch size to average time in system of orders in a one-aisle warehouse under the assumption that order arrivals follow a Poisson process and items are uniformly distributed over the aisle's length. We model this problem as an M/G[k]/1...

This paper presents a tool for warehouse processes optimization. It allows checking of the effectiveness of any warehouse layout with a free designed storage location assignment. Warehouse real-time simulator tests the quality of projected layout and item's location assignment using optimal...

In this paper, we consider a newly-designed compact three-dimensional automated storage and retrieval system (AS/RS). The system consists of an automated crane taking care of movements in the horizontal and vertical direction. A gravity conveying mechanism takes care of the depth movement. Our...

Compact, multi-deep (3D) automated storage and retrieval systems (AS/RS) are becoming increasingly popular for storing products with relatively low turnover on a compact area. An automated storage/retrieval crane takes care of movements in the horizontal and vertical direction in the rack, and a...

Die Termintreue ist eine der wichtigsten logistischen Zielgrößen in der Produktion. Vielen Unternehmen fällt es jedoch schwer, die Termintreue systematisch zu steuern. Ob eine Fertigung ihre Aufträge termintreu fertigstellt, hängt vom Rückstand und der Reihenfolgeabweichung ab. Die in...