We consider a multi-product serial two echelon inventory system with stochastic demand. Inventories at the downstream location are replenished periodically using an automatic ordering system. Under vendor managed inventory strategies the upstream stage is allowed to adapt these orders in order to benefit from economies of scale. We propose three different VMI strategies, aiming to reduce the or...

M any firms face environments with long manufacturing leadtimes, great product variety, and uncertain, nonstationary demand. A challenge is how to plan production and inventories to provide the best customer service at the least cost. In this paper, we first describe an application at Teradyne in which we implemented an inventory hedge to protect against cyclic demand variability. Based on this...

The form postponement (FP) strategy is an important strategy for manufacturing firms to utilize to achieve a quick response to customer needs while keeping low inventory levels of finished products. It is an important and difficult task to design a supply chain that uses FP strategy to mitigate the conflict between inventory level and service level. To this end, we develop a two-stage tandem qu...

Approximately 20% of global container transportation activities are used for empty repositioning, which does not generate profit margins. For supply ports, in addition to periodically transporting excess containers shortage ports reduce their inventory costs and meet demand they also need maintain a certain amount uncertain needs the future. This paper considers port as whole, so that maintains...

Many firms face environments with long production lead times, great product variety, and uncertain, non-stationary demand. A challenge is how to plan production and inventories to provide competitive customer service at least cost. In this paper, we first describe an application at Teradyne in which we implemented an inventory hedge to protect against cyclic demand variability. Based on this ex...

In this paper, we investigated a dynamic modelling technique for analysing supply chain networks using generalised stochastic Petri nets (GSPNs). The customer order arrival process is assumed to be Poisson and the service processes at the various facilities of the supply chain are assumed to be exponential. Our model takes into account both the procurement process and delivery logistics that ex...

Abstract A network of queueing-inventory systems is considered where the inventories are replenished by a common central server. Travel times for transport items send out from center and an adaptive dispatching regime to direct transportation towards locations with incorporated in model. The stationary distribution system product form explicitly given. An optimization procedure developed find g...

In this paper, a multi-product continues review inventory control problem within batch arrival queuing approach (MQr/M/1) is modeled to find the optimal quantities of maximum inventory. The objective function is to minimize summation of ordering, holding and shortage costs under warehouse space, service level, and expected lost-sales shortage cost constraints from retailer and warehouse viewpoi...