We consider a liquid type of a deteriorating item which is packaged by an outside supplier and is delivered to final customers by a distributor. Customers arrive according to a Poisson process and ask for an integer number of packages. Unsatisfied demands are backordered. The inventory is reviewed continuously and replenished from an external supplier with a positive deterministic lead time fol...

Designing the self-balancing two-wheeled mobile robots and reducing undesired vibrations are of great importance. For this purpose, the majority of researches are focused on application of relatively complex control approaches without improving the robot structure. Therefore, in this paper we introduce a new two-wheeled mobile robot which, despite its relative simple structure, fulfills the req...

A standard problem in operations literature is optimal stocking of substitutable products. We consider a very general consumer-driven substitution problem with an arbitrary number of products and a quite general substitution structure, both under centralized inventory management and competition. We obtain analytically tractable solutions that generalize and extend the results of several earlier...

Most inventory management systems at hospital departments are characterised by lost sales, periodic reviews with short lead times, and limited storage capacity. We develop two types of exact models that deal with all these characteristics. In a capacity model, the service level is maximised subject to a capacity restriction, and in a service model the required capacity is minimised subject to a...

We analyze a joint pricing and inventory control problem for a perishable product with a fixed lifetime over a finite horizon. In each period, demand depends on the price of the current period plus an additive random term. Inventories can be intentionally disposed of and those that reach their lifetime have to be disposed of. The objective is to find a joint pricing, ordering, and disposal poli...

Despite the efforts of World Health Organization, blood transfusions and delivery are still crucial challenges in supply chain management, especially when there is a high demand not enough inventory. Consequently, reducing uncertainty demand, waste, shortages has become primary goal. In this paper, we propose smart platform-oriented approach that will create robust able to achieve goals by fore...