Browsing by Author "Yang, Chih-Hai"

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An international comparison of R&D efficiency of multiple innovative outputs: The role of the national innovation system
(2011-12-01)
Chen, Chiang-Ping
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Hu, Jin-Li
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Yang, Chih-Hai
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經營管理研究所
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Institute of Business and Management
This paper compares research and development (R&D) efficiency across nations based on various output-oriented R&D efficiency indices that are developed by the data envelopment analysis approach. Empirical results show that nations have similar R&D efficiency in terms of patents and royalties, while their performance for journal publications is quite different. We then investigate how the innovation environment, especially in the national innovation system, affects these output-oriented R&D efficiency indices. R&D intensity, intellectual property rights protection, knowledge stock, and human capital accumulation all have significantly positive effects on efficiency indices. Private sector R&D, funded by either foreign sources or funded and performed by private businesses, plays an important role in improving scores on the output-oriented R&D efficiency index for patents and for royalties and licensing fees. The R&D intensity performed by higher education institutions has a positive effect on the journal-oriented R&D efficiency index.
Produce patents or journal articles? A cross-country comparison of R&D productivity change
(2013-03-01)
Chen, Chiang-Ping
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Hu, Jin-Li
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Yang, Chih-Hai
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交大名義發表
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National Chiao Tung University
This paper compares R&D productivity change across countries considering the fact that national R&D expenditure may produce multiple outputs, including patents and journal articles. Based on the concept of directional distance function and Luenberger productivity index, this paper develops a Luenberger R&D productivity change (LRC) index and then decomposes it into R&D efficiency change (catch-up effect) and R&D technical change (innovation effect). Utilizing a panel dataset of 29 countries over the 1998-2005 period to implement the empirical estimation, the results show that the R&D productivity growth is mainly attributed to the innovation effect; meanwhile, non-OECD countries have better performance on both efficiency change and technical change than their OECD counterparts. Moreover, patent-oriented R&D productivity growth serves as the main source of national R&D productivity growth than the journal article-oriented one.
R&D EFFICIENCY AND THE NATIONAL INNOVATION SYSTEM: AN INTERNATIONAL COMPARISON USING THE DISTANCE FUNCTION APPROACH
(2014-01-01)
Hu, Jin-Li
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Yang, Chih-Hai
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Chen, Chiang-Ping
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交大名義發表
;
經營管理研究所
This paper applies the distance function approach for stochastic frontier analysis (SFA) to compare research and development (R&D) efficiency across 24 nations during 1998-2005. In this multiple input-output framework, R&D expenditure stock and R&D manpower were inputs, while patents, scientific journal articles, and royalties and licensing fees (RLF) were outputs. Intellectual property rights protection, technological cooperation among business sectors, knowledge transfer between business sectors and higher education institutions, agglomeration of R&D facilities, and involvement of the government sector in R&D activities significantly improve national R&D efficiency.