Mei Hsu National Taipei University   151 University Rd. San Shia Dist. New Taipei, Taiwan 237 R.O.C.   slowbeauty001@gmail.com   http://www.ntpu.edu.tw/econ/teachers/teachers_more.php?id=4           JEL Areas: A1 : General Economics: General. J0 : Labor and Demographic Economics: General