Siwawut, Sutham
Saikaew, Charnnarong
Wisitsoraat, Anurat
Surinphong, Surasak
Funding for this research was provided by:
the Office of the Higher Education Commission of Thailand
Faculty of Engineering, Khon Kaen University
Article History
Received: 26 December 2017
Accepted: 14 May 2018
First Online: 2 June 2018