國立臺灣大學經濟學系暨研究所鄭秀玲2006-07-262018-06-282006-07-262018-06-282005-10-31http://ntur.lib.ntu.edu.tw//handle/246246/18718This paper analyzes firms’ dynamic behaviors of patent persistence and technology proximity in innovation activities for U.S., Japan, S. Korea and Taiwan during 1990-2003. We find evidences that the firms in both advanced countries and latecomer countries have a strong persistence to remain in certain states of patenting, in terms of intensity and direction. On average, the persistency of Japanese firms in sustaining their innovative activities is stronger than U.S. firms, while South Korean firms are more tenacious than the Taiwanese counterparts.application/pdf182156 bytesapplication/pdfzh-TW國立臺灣大學經濟學系暨研究所PatentPersistenceTechnology proximityransition probabilityreporthttp://ntur.lib.ntu.edu.tw/bitstream/246246/18718/1/932415H002013.pdf