First Author:   Bert D Ward Lincoln University, New Zealand wardb@lincoln.ac.nz   Rolleston, 7614, New Zealand   +64 3 3478933(Phone) +64 3 3478933(Fax) Second Author: Fardous Alom Lincoln University, New Zealand fardousalom@gmail.com   Economics Dept, Commerce Faculty Lincoln University, 7614, New Zealand   +64 3 252 8211(Phone)   Third Author: Baiding Hu Lincoln University, New Zealand baiding.hu@lincoln.ac.nz   Economics Dept, Commerce Faculty Lincoln University, 7614, New Zealand   +64 3 2528211(Phone)