A research on market competition and social welfare : Technology investments, firm heterogeneity, and vertical trading

市场竞争与社会福利研究：技术投资、企业异质性与垂直贸易

• 批准号: 21730193
• 负责人: MATSUSHIMA Noriaki
• 金额: $ 2.58万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 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-21730193/
• 关键词: 産業組織論; 産業組織; 技術投資; 製品差別化; 企業間格差; ホテリングモデル; 垂直取引; 水平統合; 垂直分離; 垂直統合

We investigate how market competition affects firm profits and social welfare. We especially take into account three aspects : technology investments, firm heterogeneity, and vertical trading. We investigate several market structures and show interesting results related to market competition. For instance, we show a market condition that entry of inefficient firms enhances the incentive of incumbent efficient firms to engage in cost-reducing activities. If the effect of entry works well, the profits of those efficient firms can increase by the entry. That is, market entry can benefit incumbent firms. Furthermore, entry by sufficiently inefficient firms can benefit social welfare, which is contrast with the existing results.

我们调查了市场竞争如何影响企业利润和社会福利。我们特别考虑了三个方面：技术投资、企业异质性和垂直交易。我们调查了几个市场结构，并展示了与市场竞争相关的有趣结果。例如，我们证明了一个市场条件，即低效率企业的进入增强了现有有效企业从事成本降低活动的激励。如果进入的效果良好，那些有效率的企业的利润可以通过进入而增加。也就是说，市场准入可以使现有的公司受益。此外，充分低效的企业进入可以使社会福利受益，这与现有结果形成了鲜明对比。

项目成果

Profit enhancing competitive pressure in vertically related industries.

利润增加垂直相关行业的竞争压力。

• DOI: 10.1016/j.jjie.2012.01.001
• 发表时间: 2012
• 期刊: Journal of the Japanese and International Economies
• 影响因子: 2.9
• 作者: Ogawa;N.;Takahashi;K.;and Osato;D.;青木英孝;益永淳;福田淳児;松島法明
• 通讯作者: 松島法明

Welfare properties of strategic R&D investments in Hotelling models

• DOI: 10.1016/j.econlet.2011.12.106
• 发表时间: 2012-06
• 期刊: Economics Letters
• 影响因子: 2
• 作者: Toshihiro Matsumura;Noriaki Matsushima

Locating Outside a Linear City Can Benefit Consumers

• DOI: 10.1111/j.1467-9787.2011.00735.x
• 发表时间: 2012-08
• 期刊: Microeconomics: Welfare Economics & Collective Decision-Making eJournal
• 作者: Toshihiro Matsumura;Noriaki Matsushima

Spatial cournot competition and transportation costs in a circular city.

循环城市的空间竞争与交通成本

• DOI: 10.1007/s00168-010-0399-z
• 发表时间: 2011
• 期刊: Annals of Regional Science
• 影响因子: 1.7
• 作者: T. Nakahara;K. Yada;山本ゆう・畑井克彦・杉万俊夫;松村敏弘
• 通讯作者: 松村敏弘

Competitiveness and stability of collusive behavior

串通行为的竞争性和稳定性

• 期刊: Bulletin of Economic Research
• 影响因子: 0.8
• 作者: Toshihiro Matsumura;Noriaki Matsushima
• 通讯作者: Noriaki Matsushima