THESIS
2001
viii, 28 leaves : ill. ; 30 cm
Abstract
Hub-and-spoke delivery systems have gained popularity in recent years. In such a system, goods are collected from suppliers, transported to a hub, sorted and consolidated, and then delivered to customers. However, when the demand from a supplier to a customer is close to a full truckload, it is not advantageous for this demand to pass through the hub and direct shipment becomes more favorable. This thesis studies the mixed system that allows both the hub-and-spoke and direct shipment delivery modes. A heuristic is developed to determine the mode of delivery for each demand and to perform vehicle routing in both modes of deliveries. Computational experiments are carried out to compare the mixed system with the two pure systems. The results are analyzed to provide insight on how the probl...[
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Hub-and-spoke delivery systems have gained popularity in recent years. In such a system, goods are collected from suppliers, transported to a hub, sorted and consolidated, and then delivered to customers. However, when the demand from a supplier to a customer is close to a full truckload, it is not advantageous for this demand to pass through the hub and direct shipment becomes more favorable. This thesis studies the mixed system that allows both the hub-and-spoke and direct shipment delivery modes. A heuristic is developed to determine the mode of delivery for each demand and to perform vehicle routing in both modes of deliveries. Computational experiments are carried out to compare the mixed system with the two pure systems. The results are analyzed to provide insight on how the problem parameters affect the performance of different delivery systems.
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