| Summary: | 碩士 === 淡江大學 === 產業經濟學系碩士班 === 103 === R&D innovation, which can not only promote investments but also stimulate economic growth, is an important section of economic development. Thus, both developed countries and developing countries emphasize on R&D investments and technological innovation. In addition, the influence between countries is extremely considerable in this globalization society so that technology innovation of a country can be improved by learning from others. In order to understand this phenomenon, this paper discusses worldwide R&D efficiency and analyzes whether there are spillover effects and convergence. First of all, this study evaluates 41countries’ R&D efficiency during 2007 and 2008 with Data Envelopment Analysis method (DEA) of Seiford and Zhu’s (2002) undesirable output so as to increase accuracy. Subsequently, we will introduce the R&D efficiency into spatial econometrics by investigating whether there are spillover effects and convergence. Simultaneously, this paper applies space gravity model to spatial weight matrix to accordance with the reality. Finally, the results show that spatial heterogeneity and convergence exist in worldwide R&D efficiency. Due to the fact that there is knowledge spillover or technological diffusion in the society, the speed of convergence increases significantly.
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