1. Mulawarman University,Faculty of Engineering,Informatics Department,Samarinda,Indonesia
2. Mulawarman University,Faculty of Engineering,Information System Department,Samarinda,Indonesia
3. Mulawarman University,Faculty of Engineering,Civil Engineering Department,Samarinda,Indonesia
4. Mulawarman University,Fakulty of Teacher and Education,Mathematics Department,Samarinda,Indonesia
5. Mulawarman University,Faculty of Engineering,Environment Engineering Department,Samarinda,Indonesia