Estimation of Trams-log Cost Function of Aviation Industry in the US.and its Comparison between Japan and Australia.

本研究旨在启发美国航空业放松管制的结果，并利用生产率分析进行生产率分析。近年来，福利国家一直受到放松管制浪潮的攻击。航空业是全球最早放松管制的行业之一。尤其是在美国，航空公司放松管制的政策影响深远，影响到了整个航空公司的垄断结构。自 20 世纪 70 年代初以来，美国学术经济学家的研究一直是美国国内航空业放松管制运动的重要力量。找到了很多证据。转型服务市场并不完全竞争。一些规模经济、范围经济、密度经济和网络经济确实存在。几种模式的新进入面临着巨大的经济障碍。寡头垄断和垄断已经产生。可竞争市场理论尚未得到经验证据的证实。从我们的结果来看，放松管制后生产率指标正在波动，航空业的长期均衡仍不明确。美国经验的教训是大型现有运营商有能力遏制竞争过程中的破坏性因素。

This study Dies to enlighten the results of deregulation in the US airline industry, and perform a productivity analysis using productivity analysis. In the recent years, the Welfare States have been under attacked by the stream of deregulation. The airline industry was one of the first industries to undergo deregulation worldwide. Especially in the US, airline deregulation policy has been fat-reaching and has affected the entire monopolistic structure of carriers. Studies by academic economists in the US have been a significant force in the movement toward deregulation of the US domestic airline industry since the early 1970s. A lot of evidence was found. The market for transformation services is not perfectly competitive. Some of economies of scale, scope, density, and network do exist. Economic barriers to new entry in several of the modes are formidable. Oligopolies and monopolies have resulted. The theory of contestable markets has not been confirmed by the empirical evidence. From our results, it is concluded the productivity indicator is fluctuating after deregulation and the long-run equilibrium in the airline industry is still not cleat. The lessons from the US experience are the ability of large incumbent carriers to contain the destructive elements of the competitive process.