Chia-Ming Yu National Tsing Hua University   Washington University, One Brookings Dr. Seigle Hall 307, Campus Box 1208 St. Louis, Missouri 63130-4899 USA   chiaming.yu@gmail.com   http://chiamingyu.org           JEL Areas: R3 : Production Analysis and Firm Location: General L2 : Firm Objectives, Organization, and Behavior: General