There is a growing tendency toward airport privatization in the world. Therefore it becomes more critical to measure management efficiency at privatized airports. Some leading researches suggest that as a result of measurement of technical efficiency by DEA using time series data on BAAplc, no remarkable changes in efficiency exist before and after privatization. This paper pursues the same object but uses panel data in addition to using the Malmquist Index which excludes a bias arising from passage of time. The outcome is that there exists an effect of improvement for technical efficiency after privatization, and there are some differences in technical efficiency among individual airports on BAAplc.

In this paper, a methodology of planning the ship, fleet and their operational timetable is presented between Tokyo and Central-Hokkaido. Researching logistics data such as time values of items and cargo's emergence patterns, and assuming the ship design and timetable, the simulation is carried out not only for ships but also for other land based and airborne competitors. Then the sacrifice cost for each cargo will be calculated to choose the cheapest mode. Iteration is made for the variety of ship design and timetable to find the most prospective solution. Financial evaluation can be given as a cash flow analysis.