First Author:   Shin S. Ikeda National Graduate Institute for Policy Studies s-ikeda@grips.ac.jp   7-22-1 Roppongi, Minatoku , 106-8677, Japan   +81-3-6439-6167(Phone) +81-3-6439-6167(Fax) http://www3.grips.ac.jp/~s-ikeda/ Second Author: Yan Zhang Asian Development Bank Institute yanzhang@adbi.org   Chiyodaku, Chiyodaku , 100-6008, Japan