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First Author:
 
Yu-Hsien Liao
Department of Applied Mathematics, National Dong Hwa University, Hualien, Taiwan.
d9211001@em92.ndhu.edu.tw
 
Department of Applied Mathematics,, National Dong Hwa University,, Hualien 974, Taiwan.
Hualien, 974, Taiwan
 
+886-3-863-3512(Phone)
+886-3-863-3512(Fax)