| Project/Area Number |
19730165
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Applied economics
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| Research Institution | Yokohama National University (2009)
University of Tsukuba (2007-2008) |
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Principal Investigator |
NAKAJIMA Ryo University of Tsukuba, 国際社会科学研究科, 准教授 (70431658)
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| Project Period (FY) |
2007 – 2009
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| Project Status |
Completed (Fiscal Year 2009)
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| Budget Amount *help |
¥2,990,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥390,000)
Fiscal Year 2009: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2008: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2007: ¥1,300,000 (Direct Cost: ¥1,300,000)
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| Keywords | 特許 / 研究開発 / ネットワーク / 発明家の行動 / 情報技術産業 / 発明家の転職行動 / 戦略的ネットワーク |
|---|
| Research Abstract |
In this study, I provided an empirical analysis of evolving networks of successful R&D collaboration in IT industry in the United States. Firstly, I analyzed the effect of existing network structure in the process of new R&D collaboration formation. I controlled for unobserved similarities among firms based on community structures with the network, and found a significant cyclic closure and preferential attachment effects. Secondly, I estimated the effect of patent inventors' collaboration networks on their productivity and mobility using U.S. patent application database. It is found that networked inventors are more productive and have longer tenure than non-networked inventors as the standard on-the-job-search model predicts. These results are consistent with the job search and match hypothesis between inventors and firms through collaboration networks.
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