Linehaul Network Design with a Branch-and-Price Guided Search

Thesis abstract A company with an express delivery service transports small packages from origin to destination on time. Combining several packages in the same transportation vehicle on part of their routes can significantly reduce costs. The goal of this thesis is to minimize the total costs of such a transportation plan. To determine whether faster results can be obtained…

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Economies of Traffic Density and Scale in the Integrated Air Cargo Industry: The Cost Structures of FedEx Express and UPS Airlines

This paper examines the cost structures of the leading integrated air cargo carriers, FedEx Express and UPS Airlines. A total cost model is estimated for the two carriers using quarterly data on domestic operations and costs over a nine-year period (2003-2011). The estimated model indicates that the integrated industry exhibits increasing returns to trac density and constant returns to…

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The Cost Structure of the Integrated Air Freight Business

This paper intends to deeply analyse the cost structure of integrators by means of a flexible functional form, namely the translog cost function. A company’s cost structure is essential in its strategic decision making. Hence, to examine whether the integrators’ strategies are consistent with their cost structure, the knowledge of their cost function is indispensable.…

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