Abstract: We consider a perishable inventory system with bonus service for certain customers, wherein the demand of a customer is satisfied only after performing some service on the item which is assumed to be of random duration. The maximum inventory level is S . The ordering policy is (0,S ) policy and the lead time is zero. The life time of each items is assumed to be exponential.The custome...

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...

Today’s global economy relies heavily on transportation and warehousing to deliver goods. Outsourcing has made the distribution networks complex with several layers of national (import) distribution centers (NDCs) and regional distribution centers (RDCs) between suppliers and retailers. More distribution nodes in the supply chain also means more inventory stockpiles. We present an integrated fa...

We consider a multi-stage inventory control problem with nonstationary customer demand under a customer service-level constraint. We propose a multi-agent based model for distributed inventory control systems. In this model, the agent at the first stage is called a retail agent and those at the remaining stages are called supply agents. The retail agent makes an effort to satisfy a target custo...

In recent supply chain management, as the online use of inventory data becomes available with the development of Radio Frequency Identification (RFID) technology, it is now possible to monitor the performance measures in a timely fashion. Customer service level is a key performance measure that can be computed as the percentage of times that customer orders electronically received are fulfilled...

We propose a static approximation of dynamic demand substitution behavior based on a fluid network model and a serviceinventory mapping. This approximation greatly enhances our ability to analyze the interdependent inventory/service, price, and product assortment decisions in noncompetitive and competitive scenarios with demand substitution. We demonstrate that the approximation is well behaved...

In this research, we apply a discrete event simulation approach to explore how enterprises in the Chinese mainland make a successful operation with the aid of e-commerce. This paper examines the effects of proposed four kinds of transshipment operation network structures on the performance under different policies of transshipment and inventory allocation. Results show that: 1) transshipment ba...

This article focus on the behaviour of a multi-product batch production line with fixed capacity which is scheduled according to inaccurate inventories (IRI). We assume an unlimited supply of raw materials and a constant demand for the different finished goods. The ordering policy of this production line is based on a (Q,R) continuous review, lost-sales inventory model and on given priority for...

Companies competing in today’s global economy are challenged by two critical yet conflicting issues related to their supply chains. On one hand, they are under ongoing pressure to reduce operational and inventory costs, which requires keeping inventory levels low. On the other hand, they must achieve a high customer service level by having inventory available when and where the customer wants i...

We consider an inventory routing problem in discrete time where a supplier has to serve a set of customers over a time horizon. A capacity constraint for the inventory is given for each customer and the service cannot cause any stock-out situation. Two different replenishment policies are considered, the order-up-to level and the maximum level policies. A single vehicle with a given capacity is...