Firm size distribution and economic growth
| Project/Area Number |
25380220
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Economic theory
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| Research Institution | Waseda University |
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Principal Investigator |
Oikawa Koki 早稲田大学, 社会科学総合学術院, 准教授 (90468728)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Keywords | イノベーション / 技術空間上の企業分布 / 技術的多極化 / 技術グループ間競争 / 特許引用重複 / 研究開発 / 企業間の技術的距離 / 経済成長 / 企業間技術的距離 / 特許引用 / ポラライゼーション |
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| Outline of Final Research Achievements |
We construct a new method to describe firm distributions within technology fields and the dynamic behavior of these distributions. To locate firms on a technology space, we apply multidimensional scaling for the inter-firm technological dissimilarity matrices that are computed from patent citation overlaps among firms using the NBER US patent dataset. Our estimated firm distributions show increasing trends in technological distance and polarization on average, where we follow Duclos and et al. (2004) to measure polarization. We construct a model of inter-group competition in which polarization stimulates R&D incentives. The model fits data before the major patent reform in the United States in 1980s and polarization increases citation-weighted number of patent applications. After about 1990, the impact of polarization is reversed.
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Report
(4 results)
Research Products
(7 results)
