First Author:   Hyeongwoo Kim Auburn University gmmkim@gmail.com   415 West Magnolia Ave., Department of Economics, Auburn University Auburn, 36849, USA   (334) 844-2928(Phone) (334) 844-2928(Fax) http://business.auburn.edu/~hzk0001/ Second Author: Young-Kyu Moh Texas Tech University young-kyu.moh@ttu.edu   Department of Economics, Texas Tech University Lubbock, 79409