1. Universitas Hangtuah,Faculty of Marine Science and Engineering,Surabaya,Indonesia
2. Department of Information Technology
Politeknik Negeri Padang
Padang, Indonesia
3. Faculty of Engineering, Universitas Negeri Yogyakarta
Yogyakarta, Indonesia
Graduate Institute of Network Learning Technology
National Central University
Taiwan
4. Politeknik Elektronika Negeri Surabaya,Department of Informatics and Computer Engineering,Surabaya,Indonesia