TEKNIK (p-ISSN: 0852-1697; e-ISSN: 2460-9919), is a scientific journal published by Fakultas Teknik, Universitas Diponegoro, Jln. Prof. Soedarto, SH, UNDIP Tembalang Campus, Semarang, Central Java, ZIP: 50275; Telp. (024)7460056, Fax: (024)7460055, E-mail: jteknik@live.undip.ac.id