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First Author:
 
Jeerawadee Pumjaroen
Rajamangala University of Technology Thanyaburi
jeerawadee_p@rmutt.ac.th
 
Applied Statistics, Rajamangala University of Technology Thanyaburi, 39 Moi 1
Khlong Luang, 12110, Thailand
 
+66 (0) 81-621-5489(Phone)
+66 (0) 81-621-5489(Fax)

Second Author:

Tipat Sottiwan
Rajamangala University of Technology Thanyaburi
tipat_s@rmutt.ac.th