Environmental impact diffusion by fragmentation trade of east Asia and international environmental technological policy

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This research deals with 3-stage vertical specialization share (VS) originally introduced by Hummelsa, et al. (2001) and extended by Fujita (2006a). I calculate segmentalized elements of the enhanced VS model matrix using IDE-JETRO Asia International Input-Output Tables in 1990, 1995 and 2000 now available. Each of these elements has the information about export sector, export destination (country and sector) and inducted import origin (country and sector). Especially, the growth of Electronics and Electronic Products sector's VSs are remarkable and I breakdown them into the factors, as export/gross output ratio and import dependency of intermediate goods by industrial sector and import induction ratio caused by the character of total industrial structure. As a result, some aspects of the intermediate goods trade structure of Asia in the sector are obtained