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First Author:
 
Yan-An Hwang
Department of Applied Mathematics, National Dong Hwa University, Hualien, Taiwan.
yahwang@mail.ndhu.edu.tw
 
 
 
 

Second Author:

Yaw-Hwa Hsiao
Department of Applied Mathematics, National Dong Hwa University, Hualien, Taiwan.
d804@server.am.ndhu.edu.tw