In automated storage and retrieval systems (AS/RS), the usage of intelligent algorithms can lead to a reduction in the makespan required to complete a series of input/output operations. This paper presents a simulation-optimisation algorithm which aims at minimising the makespan in a realistic...

Distribution und Logistik -- Modelle der Distributionslogistik -- Digitalisierung in der Distributionslogistik -- Internationale Handelsklauseln -- Logistiknetzwerke und Lieferketten -- Distributionsstandort -- Lagertechnik und Kommissionierung -- Verpackung, Lager- und Förderhilfsmittel --...

This paper presents a travel time model for multi-deep AS/RS, which determines the average travel times during a single command storage or retrieval and a dual command cycle. The model can determine the relocation probability, the number of expected relocations and the travel times in storage...

The paper presents analysis of the storage systems used by social network sites. Namely, the social networks are one of the main driving forces behind the NoSQL database development. Facebook and Twitter were, together with other the Big Data players like Google and Amazon, first faced with the...

Automated storage and retrieval systems (AS/RSs) are material handling systems that are frequently used in manufacturing and distribution centers. The modelling of the retrieval–travel time of an AS/RS (expected product delivery time) is practically important, because it allows us to evaluate...

Our research focuses on the storage decision in a semi-automated storage system, where the inventory is stored on mobile storage pods. In a typical system, each storage pod carries a mixture of items, and the inventory of each item is spread over multiple storage pods. These pods are transported...

Autonomous vehicle-based storage and retrieval systems are commonly used in e-commerce fulfillment as they allow a high and flexible throughput capacity. In these systems, roaming robots transport loads between a storage location and a workstation. Two main variants exist: Horizontal, where the...

The pallet is a platform used for storing, handling, and transporting products. There are hundreds of different pallet sizes around the world. The case of pallets is examined to illustrate the impact of multiplicity of standards on trade costs. We select this case because pallets are used all...

The stowage decision determines how arriving products are distributed in a storage system or warehouse. In particular we consider the zone-stowage decision for large warehouses that are organized into distinct storage zones. An example would be a multi-floor warehouse where each floor is a...

Robot-based compact storage and retrieval systems (RCSRS) have seen many implementations over the last few years. In such a system, the inventory items are stored in bins, organized in a grid. In each cell of the grid, a certain number of bins are stored on top of each other. Robots with...