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First Author:
 
Yu-hsien Liao
Department of Applied Mathematics, National Pingtung University of Education
d9211001@ems.ndhu.edu.tw
 
Department of Applied Mathematics,, National Pingtung University of Education,, Pingtung 900, Taiwan.
Pingtung, 900, Taiwan
 
+886-8-722-6141(Phone)
+886-8-722-6141(Fax)