TY - SER TI - INTERNATIONAL SCIENTIFIC JOURNAL OF ENGINEERING AND TECHNOLOGY (ISJET) Volume 3 No. 1 January - June 2019 SN - 2586-8527 UR - https://isjet.pim.ac.th/uploads/content/2019/07/o_1dg4i1fms1uhe1g7t151ut631mq6a.pdf UR - https://isjet.pim.ac.th/uploads/content/2019/07/o_1dg4i1fms1uhe1g7t151ut631mq6a.pdf ER -