| Summary: | 碩士 === 國立臺灣大學 === 工業工程學研究所 === 99 === This study aims to compare the gap of technology fronts between the United States (U.S.) and the global nations in the smart grid field. Highly cited patents were collected from 2001/01/01 to 2010/12/31 and then were analyzed through bibliographic coupling (B.C.) method, sliding citation window, and Girvan-Newman clustering for being converted into a global technology trajectory map as well as a U.S. one. Results show that the temporal relationship between a global and a U.S trajectory can be classified into three types based on the average issue date of a technology front: parallel development, U.S. frontrunner and global frontrunner. “Parallel development” defines as the technology development is the same both in the U.S. and the global nations which covers the “Automatic Spread Trading”, “Power Line Communication System”, “Ad hoc RSI Network” and etc.. “U.S. frontrunner” defines as the technology development of the U.S. is faster than the other global nations including the topic of “Dynamic Power and Workload Management for Multi-server” where the U.S. (April, 2006) emerged earlier for four months than the global (August, 2006). “Global frontrunner” defines as the technology development of the global nations is faster than the U.S. containing the topic of “Electronic Auction Information” in which the global (April, 2004) emerged earlier for nine months than the U.S. (January, 2005).
|
|---|
