This thesis studies innovation networks, R&D spillovers, spatial spillovers, productivity growth and associated adjustments in Taiwan high-technology industries. A dynamic production modeling is built up to estimate R&D and its spillover effects among and within high-technology industries to study the dynamic effects of inter-, intra-industry R&D and spatial spillovers and exogenous technical changes on output growth for Taiwan high-technology industries. The thesis involves analysis of R&D spillover effects among and within high-technology industries to study the dynamic perspectives of the innovation diffusion. As leading high-technology and network expand the horizons of economic agents¡¦ production possibilities and decisions, the spillovers between productive entities are likely to be of increasing importance in the knowledge-based economy. Understanding these productive inter-dependencies, and their potential to motivate various types of spillovers require modeling and measuring their existence and impacts. We provide a conceptual and empirical framework for measuring and evaluating various types of spillover mechanism, which allows us both to quantify the cost-effects and evaluating the contribution to productive performance. We explore the temporal, spatial, and industrial spillovers using a dynamic cost function model that explicitly parameterizes the spillover weights and econometrically estimates them. We extend the dynamic external spillover model framework, described in Tsai and Chen (2001), which assumed that each firm derives an optimal plan so that the expected present value of current and future costs stream is minimized. First, we study the spillover effects in the dimension of industry considerations and geography. Second, to identify all kinds of spillover sources, to assess the spillover processes, and to evaluate the contributions of such inter-dependencies in productive performance we incorporate the concept of spillover ratio into the industry dynamic model. The temporal, intra-industry, inter-industry, and spatial R&D spillovers are distinguished and, in doing so, provide a richer account of innovation, learning and the means which are encouraged by geographical proximity.

隨著知識經濟時代以及全球化的來臨，各國都市面臨全球性的競爭壓力，都市內部業種轉變為以服務業為業種主流，其中的生產者服務業更是成長快速的新興產業，更是適應全球化發展策略的重要產業。因此了解其聚集的成因將更具有時代的意義。產業聚集於都市的現象，傳統聚集經濟多以規模經濟、地方化經濟、都市化經濟為其解釋。近來，由於知識經濟的重要性，衍生出以知識的創新效果以及外溢效果來解釋產業的聚集現象。本研究利用空間距離的影響性來估計產業內知識外溢效果，並利用產業投入產出關聯係數估計產業間知識外溢效果，並採用分量迴歸來進行實證分析，以利於更詳實的解釋各知識外溢效果在於不同公司規模下的影響性。 研究結果發現，投資於R&D要素對於公司的成長並沒有顯著的影響，甚至對於中小型公司為負向影響。產業內知識外溢效果方面，對於各公司規模皆有正向的幫助。產業間知識外溢效果則呈現對大規模公司有正向幫助，對中小規模公司則為負向效果。在知識經濟時代下，兩種知識外溢效果確實有助於大規模公司的成長，為產業聚集的重要成因之ㄧ，但對於中小規模公司則有不同的效果產生。因此在促進產業發展的區位規劃設計上，需要考量不同規模公司與不同知識外溢效果的相互關係，以便有助於生產者服務業的發展，建立更具有國際競爭力的都市型態。 / Facing the developing economics of knowledge and globalization, Taipei metropolitan area has faced the issue of industrial restructuring. The strategy for globalization is to develop the producer services (PS) sector, in order to improve higher competitiveness to the city. The theory of agglomeration economics includes scale economics, localization economics and urbanization economics. Nowadays, spillover effect is considered as the most important reason that industries agglomeration develop in urban areas. This paper analyzes two categories of R&D spillover effect in the PS sector of Taipei metropolitan area by quantile regression. The spatial distance and the Input-Output table are used to calculate the intra-industrial and inter-industrial spillover effect, respectively. The result shows that investment in R&D has a negative effect to firm’s output. Firms with any scale benefit from the intra-industrial spillover effect incomplete. The inter-industrial spillover effect analysis shows that only the bigger scale firms can get the positive benefit, the smaller scale firms get the negative effect. The research analyzes different kinds of R&D spillover effect, and the result show that there are different effects among different conditions. In sum, this research suggests that the disposition of industrial location should consider both the scale of firm and the different spillover effect. As above, utilizing the R&D spillover effect is an important factor to develop the PS sector and to construct the global city.