In the considered multistage supply chain, the product structure determines the organization of the network of enterprises that cooperate to manufacture end-products from raw materials. This paper proposes to describe such a multistage supply chain by a sequence of linear dynamical models with distributed delays. The assumed autonomy and information privacy of production units imposes structura...

⎯There have been many studies on two-stage supply models. Because supply chains are increasingly more complicated, this study considers the three-stage supply chain configurations which involve multiple companies at each stage and each company at the upstream stages can supply two or more customers. The coordination mechanisms for the members along the chain are achieved in the following two as...

The inventory process, i.e. the assessment of assets and implemented countermeasures, consumes a significant amount of time in the risk and compliance management process. Assets and countermeasures have to be identified and classified in terms of confidentiality, integrity and availability requirements. Depending on the organization’s size this process may include thousands of assets and counte...

This paper investigates the impacts inventory shortage policies have on transportation costs in base-stock distribution systems under uncertain demand. The model proposed demonstrates how backlogging arrangements can serve to decrease the variability of transportation capacity requirements, and hence the magnitude of transportation costs, when compared with policies that expedite demand shortag...

This paper studies a two-echelon supply chain with stochastic and discrete consumer demand, batch order quantities, periodic inventory review, and deterministic transportation times. Reorder point policies manage inventories at every location. Average inventory, backorders and fill rates are evaluated exactly for each location. Safety stock is evaluated exactly at the lower echelon and a good a...

In current global competitive market, manufacturers must set up an efficient supply chain and network to cut cost. Each company aims to supply the right quantity of products to customer in right place and at right time with right cost. Each supplier must respond to the short life-cycle and quick response need for the terminal products. To satisfy the varying customer demand is one of the most i...

We consider a two-stage supply chain under centralized control. The downstream facility faces discrete stochastic demand and passes supply requests to the upstream facility. The upstream facility always meets the supply requests from downstream. If the upstream facility cannot meet the supply requests from inventory on hand, the shortage must be filled by expediting, which will incur per unit a...

In this paper, we address the optimal joint control of inventory and transshipment for a firm that produces in two locations and faces capacity uncertainty. Capacity uncertainty (e.g., due to downtime, quality problems, yield, etc.) is a common feature of many production systems but its effects have not been explored in the context of a firm that has multiple production facilities. We first cha...