Roshan Gaonkar & N.Viswanadham
The Logistics Institute – Asia Pacific
National University of Singapore tlirsg@nus.edu.sg, mpenv@nus.edu.sg
Supply-hubs, supported by information sharing technologies, are being used by contract manufacturers in hi-tech industries to streamline their supply-side inventory management, in response to shortening product lifecycles and the necessity of configuring goods to order. In this paper, we develop a linear programming model for integrated planning and scheduling of supply hub activities. We assume that all stakeholders in the supply hub share information on their capacities, schedules and cost structures. Based on this information the model addresses the issue of production and delivery scheduling, for the manufacturer and its suppliers, for optimal profit. The model was solved using optimization tools provided by ILOG.
Keywords : Supply Hub, Collaborative Scheduling, Hi-tech supply chain.
1. INTRODUCTION
The tide of constant innovation, changing market forces and rising customer expectations have transformed the hi-tech and electronics industry into one of the most competitive industries. Challenges in dealing with mass customization, rapidly shrinking product life cycles, rapid inventory depreciation and handling complex multi-sourced supply chains have required the use of very sophisticated tools and techniques for meeting the rising expectations of customers in a cost-efficient manner. Two of the most effective approaches to managing the electronics supply chain include the usage of collaborative planning through visibility enabled by the Internet and the usage of supply hubs to manage material flows and supplier relations [1].
Traditionally, activities have been optimized within the functional and corporate silos, at the expense of the greater supply chain [2]. Such a model for the electronics supply chain is unsuitable under the current
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