Title

高雄港港埠營運自然獨占之檢定

Translated Titles

A Test of Natural Monopoly for KaoPort Operations

DOI

10.6160/2005.12.08

Authors

張玉山(Yue-Shan Chang);孫智嫻(Jyih-Sian Sun)

Key Words

自然獨占 ; 規模經濟 ; 範疇經濟 ; 多產出模型 ; Fourier成本函數 ; natural monopoly ; economies of scale and scope ; multiproduct model ; Fourier cost function

PublicationName

中山管理評論

Volume or Term/Year and Month of Publication

13卷4期(2005 / 12 / 01)

Page #

983 - 1009

Content Language

繁體中文

Chinese Abstract

本文旨在檢定高雄港港埠業務是否具有自然獨占以判斷能否藉由開放競爭以提高經濟效率。本文將港埠營運區分為停泊、裝卸與倉儲三項業務,以Fourier成本函數建立一個三種投入(勞動、資本與中間要素),三種產出的實證模型並以規模經濟與(或)範疇經濟作為自然獨占之檢驗指標,研究期間為1997-2001年。研究的結果顯示1.無論是個別的業務或整體港埠業務均具有顯著性的規模經濟與範疇經濟特性。2.裝卸與倉儲業務有剩餘產能。3.停泊與裝卸兩項業務具有成本互補效果。針對港埠營運具有自然獨占的性質,其產業管理意涵為港埠營運並不能藉由解除管制開放競爭以提高經濟效率,相反的,政府應藉由合乎經濟理性的管制措施以減少因市場失靈所產生的福利損失。

English Abstract

This paper examines the natural monopoly of harbor operations. The authors use a multiproduct model which represents harbor outputs with three variables: mooring, stevedoring, and warehousing. A Fourier cost function is used to calculate several cost indicators. The sample covers of monthly data over 1997-2001 period. From the analysis of the cost indicators, it is found that both of individual operation and all of the operations as a whole exhibit significant economies of scale and scope. Moreover, the presences of excess capacity of stevedoring and warehousing have been detected, as well as a presence of cost complement between mooring and stevedoring. Because of a natural monopoly, the operation of harbor outputs cannot improve economic efficient by deregulation and inducting market competition. On the contrary, the government should put more effort into decreasing social welfare loss by economic reasonable regulations.

Topic Category 社會科學 > 管理學
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