Market power and profit margin under imperfect competitive markets

不完全竞争市场下的市场势力与利润率

• 批准号: 21530239
• 负责人: KIM Donghun
• 金额: $ 2.83万
• 依托单位: International University of Japan
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21530239/
• 关键词: 寡占市場; 利益マージン; 不完全競争; 産業組織; 市場支配力; 実証産業組織論

Conventional theory of industrial organization discusses monopolistic product markets by assuming that factor prices, such as wage rate, are determined in a perfectly competitive market. On the other hand, conventional labor economics discusses imperfect labor markets by assuming that product prices are determined in a perfectly competitive market. However, since factor and product markets generally violate the assumption of perfect competition, the discussion of profit margins requires the incorporation of the special features of these markets. Given these arguments, this research project empirically examines the profit margins for Japanese manufacturing sector. We first studied the dynamic relationship among profit margins, market power, and product-life cycle in the DRAM industry, where Japanese firms have been playing an important role. Then we empirically analyzed the relationship between profit and firm growth for 1633 Japanese manufacturing firms.

工业组织的常规理论通过假设因要素价格（例如工资率）在竞争激烈的市场中确定垄断产品市场。另一方面，传统的劳动经济学通过假设产品价格是在竞争激烈的市场中确定的，讨论了不完美的劳动力市场。但是，由于因素和产品市场通常违反了完美竞争的假设，因此对利润率的讨论需要纳入这些市场的特殊特征。鉴于这些论点，该研究项目经验研究了日本制造业的利润率。我们首先研究了DRAM行业的利润率，市场能力和产品生活周期之间的动态关系，而日本公司一直在发挥重要作用。然后，我们经验分析了1633家日本制造公司的利润与公司增长之间的关系。

项目成果

[Mimeograph] Dynamics of Market Power over Product Life Cycle : The Case of the DRAM Industry, Donghun Kim, Osamu Yoshioka, and Makoto Kakinaka, mimeo

[油印] 市场力量对产品生命周期的动态：DRAM 行业案例，Donghun Kim、Osamu Yoshioka 和 Makoto Kakinaka，油印

Dynamics of Firm Growth and Profitability : The Case of Japanese Manufacturing Firms

企业增长和盈利能力的动态：日本制造企业的案例

• 发表时间: 2011
• 期刊: Global Economic Review
• 影响因子: 1.7
• 作者: Shimizu;C;T.Watanabe;清水千弘;清水千弘;清水千弘・唐渡広志;Akihiko Nakano and Donghun Kim
• 通讯作者: Akihiko Nakano and Donghun Kim