研討日期

2009年9月12日上午10:20 ~ 13:00

研討地點

台灣大學社會科學院   電化教室

討論文獻

題目

作者

文獻出處

Profitability, Concentration, Imports and Exports: The Case of Taiwan's Midstream Petrochemical Industries.

Kuo-Liang Wang and Shu-Ching Wang

Applied Economics, 2008

報告人

康廷嶽

參加人員

黃鴻 梁文榮 林燕淑 康廷嶽 林晏如 曾靜枝 涂光億 王光正 

吳芝文 彭正浩 張瑞雲 陳金盛 施姵全 陳宏易 張民忠 王佳琪 鐘嘒陵 丁虹仁 蔡明芳 吳宜謙 陳佩鈴 王羿傑

論文提要

Based on an open-economy oligopoly model, causalities among domestic firms’ price-cost margin (PCM), domestic concentration, import and export shares are derived and a simultaneous-equation system is established. By utilizing the 1989–1997 data of Taiwan’s midstream petrochemical industries, three-stage least squares is used to estimate the system. The empirical results confirm the derived results, and demonstrate: (1) there exist simultaneous relationships among domestic PCM, domestic concentration, import and export shares; (2) import concentration affects domestic concentration positively, but affects domestic PCM, import and export shares negatively; (3) diversifying international markets improves domestic firms’ PCM; (4) domestic firms seem to be in a situation of collusion

研究建議

本文理論模型的部分假設過強，若未來進行進行延伸時應該特別小心。