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복합운송업체 제약요인 해소를 통한 항공화물운송 부분의 경쟁력 제고방안
김제철 한국국제물류협회 2003 복합운송 Vol.140 No.-
우리나라는 2003년 $\ulcorner$참여정부$\lrcorner$가 들어서면서 10대 국정과제 중 하나로 $\ulcorner$ 동북아 물류 및 비즈니스 중심국가를 위한 기반구축$\lrcorner$을 목표로 하고 있는데, 이는 21세기 $\ulcorner$중국경제의 부상$\lrcorner$ 속에서 한국의 지정학적 위치와 연계성 활용을
항공운송산업의 비용분석을 통한 규모의 경제성 추정;초월대수(Translog)비용함수와 푸리에(Fourier) 신축함수 비교 분석을 중심으로
김제철,허석민,이동희,이영수,Kim, Je-Chul,Huh, Seok-Min,Lee, Dong-Hui,Lee, Young-Soo 한국항공운항학회 2006 한국항공운항학회지 Vol.14 No.4
This study analyzes the expense structure of the air transport industry, based on the cost and income data of 18 major airlines, estimates the economic effectiveness of scale and conducts comparative analysis. As for the method of analysis, Translog cost function and the Fourier flexible function were used. The result showed that big companies had the economy of scale based on the Translog cost function, while the Fourier flexible function led to a estimation that expanding the input is not recommended, for the expansion of scale entails the poor economy of scale. It can be presumed that the economy of scale was estimated according to the U shape of the Translog cost function in the given data. On the other hand, the Fourier flexible cost function approaches the unknown function, as it is a Fourier series, and correctly infers the economy of scale based on the analyzed data. As for the flag carrier's economy of scale, it was inferred that the economy of scale existed by any of two functions. Therefore, the conclusion was that further expanding the scale will not cause any problem.