Connectivity Analysis of Air Cargo Transshipment at Hub Airport

摘要

After the deregulation of the aviation market in the United States in 1978, airlines took advantage of the possibilities of the liberalized market and reorganized their networks. Then hub-and-spoke networks are used in aviation market generally. The framework of hub-andspoke network makes it feasible to amplify flight networks. Thus, a number of airlines can move places more then before through the networks. Amplification of networks can be implementing through the transfer of passengers, transshipment of cargo, or both of them. Almost researches have been concentrated on the passenger aspect at airports in worldwide. Air cargo, however, has been became one of significant area at hub airports to keep their leading position in terms of the provision services and handling volumes. This paper investigates of the connectivity of airfreight networks as the temporal concentrations in current network at Incheon International Airport. In order to evaluate airline flight schedule effects to stimulate hubbing at an airport, the indirect connectivity can be considered it states the number of direct frequencies, the minimum connecting times and the quality of the connection determine indirect connectivity. Therefore, the connectivity of freight transshipment depends on both the quality of the connection at the hub airport and the quality of the indirect flight compared to the direct flight. In addressing these issues, this paper analyzes the connectivity of flight schedules using a temporal wave-system structure and estimates the degree of connectivity and quality of connectivity applying the NETSCAN model.