Recent years have witness the pervasive supply disruptions and their impacts on supply chain performance. We investigate single or dual sourcing emergency model with partial supply disruptions. Introducing the concept of disruption proportion and delivery allocation, we first explore partial interrupted proportion of main supplier and delivery proportion of backup supplier. Under partial disrup...

Generally, the inventory routing problem occurs in a supply chain where customers consider the supplier responsible for inventory replenishment. In this situation, the supplier finds the answer to questions regarding the time and quantity of delivery to the customer as well as the sequence of customers in the routes. Considering the effect of production decisions on answering these questions, t...

Most firms face some risk of disruption to their supply due to labor strikes, supplier bankruptcies, manufacturing quality failures, natural disasters, terrorism, or other events. In recognition of the fact that the risk of disruption may change over time, some firms have begun to continually monitor their disruption risk and to adjust their safeguards, e.g., inventory, in accordance with the c...

In today’s severe competitive environment the selection of appropriate suppliers is a significantly important decision for effective supply chain management. Appropriate suppliers reduce purchasing costs, decrease production lead time, increase customer satisfaction and strengthen corporate competitiveness. In this study a multiple sourcing supplier selection problem is considered as a multi ob...

Two important decisions in supply chains and logistics systems design are the supplier selection order allocation (SS&OA) problem vehicle routing (VRP). Supply disruption may reduce capacity of suppliers, transportation network decrease number vehicles fleet disrupt some routes. Also, increasing environmental regulations awareness makes companies pay more attention to green chain management (GS...

This paper studies an inventory policy for a retailer who orders his products from a supplier whose deliveries only partially satisfy the quality requirements. We model this situation by an infinite-horizon periodic-review model with binomial random yield and positive lead time. We propose an orderup-to policy based on approximating the inventory model with unreliable supplier by a model with a...

This article outlines a hybrid method, incorporating multiple techniques into an evaluation process, in order to select competitive suppliers in a supply chain. It enables a purchaser to do single sourcing and multiple sourcing by calculating a combined supplier score (CSS), which accounts for both qualitative and quantitative factors that impact on supply chain performance. By performing a clu...

Supply chain management is concerned with the coordination of material and information flows in multi-stage production systems. Inventory management has long been treated as an isolated function solely focused on individual entities, taking into account concerned with single-vendor-single-buyer and single-vendormultiple-buyer-models. Concerning the supplier selection problem, quantitative model...