????? ??? ???(鄭明勳)?? 5? ?? ??? ??? ????.
??? 5? ???? ??? ??? ????(RFP) ?????? ?? ???? ??, ??? ???? ???? ?? ???? ????? ??? ???. RFP? 5? ??? ??? ??? ??? ?? ??? ??? 7?? ??? ??? 2? ?? ????.
2? RFP ????? ??? ??? ????? 2003???. ??? 1989～1994? ?? ???? ???? ?????? ???? ??? ???? ????.