Recent developments in urbanization and e-commerce have pushed businesses to deploy efficient systems decrease their supply chain cost. Vendor Managed Inventory (VMI) is one of the most widely used strategies effectively manage chains with multiple parties. VMI implementation asks for solving Routing Problem (IRP). This study considers a multi-product multi-period inventory routing problem, inc...

In this paper we observe the extension of the vehicle routing problem (VRP) in fuel delivery that includes petrol stations inventory management and which can be classified as the Inventory Routing Problem (IRP) in fuel delivery. The objective of the IRP is to minimize the total cost of vehicle routing and inventory management. We developed a Variable Neighborhood Search (VNS) heuristic for solv...

Market segmentation is an essential element of marketing in industrialized countries. Goods can no longer be produced and sold without considering customer needs and recognized the heterogeneity of these needs. In this paper, we use market segmentation approach in single product inventory system with deteriorating items. The objective is to make use of optimal control theory to solve the produc...

We propose local search algorithms for the vehicle routing problem with soft time window constraints. The time window constraint for each customer is treated as a penalty function, which is very general in the sense that it can be non-convex and discontinuous as long as it is piecewise linear. In our algorithm, we use local search to assign customers to vehicles and to find orders of customers ...

We consider an NP-hard selective and periodic inventory routing problem (SPIRP) in a waste vegetable oil collection environment. This SPIRP arises the context of reverse logistics where biodiesel company has daily requirements to be used as raw material its production process. These can fulfilled by using available inventory, collecting or purchasing virgin oil. The consists determining period ...

4 A single product maritime inventory routing problem in which the production and con5 sumption rates vary over the planning horizon is studied. The problem includes a heteroge6 neous fleet and multiple production and consumption ports with limited storage capacity. 7 Two discrete time formulations are developed. One is a standard formulation and the other 8 is a fixed charge network flow refor...

In today’s competitive market place, companies seek an efficient structure of supply chain so as to provide customers with highest value and achieve competitive advantage. This requires a broader perspective than just the borders of an individual company during a supply chain. This paper investigates an aggregate production planning problem integrated with distribution issues in a supply chain ...

We propose a model that integrates inventory routing and freight consolidation for perishable goods with a fixed lifetime. The problem is motivated by the status quo of logistics in some U.S. agriculture markets, but adapts to other relevant two-echelon supply chains, e.g. combined production planning and distribution. We first identify special cases where solving single-echelon subproblems seq...

Production costs in general, and workforce and inventory costs in particular, constitute a large fraction of the operating costs of many manufacturing plants. We introduce cooperative aggregate production planning as a way to decrease these costs. That is, when production planning of two or more facilities (plants) is integrated, they can interchange workforce and products inventory; thus, thei...