TY - SER TI - INTERNATIONAL SCIENTIFIC JOURNAL OF ENGINEERING AND TECHNOLOGY (ISJET) Volume 1, Number 2 July - December 2017 SN - 2586-8527 UR - https://ph02.tci-thaijo.org/index.php/isjet/issue/view/13426/isjet1-2 UR - https://ph02.tci-thaijo.org/index.php/isjet/issue/view/13426/isjet1-2 ER -