1. Universitas Sangga Buana,Departement of Industrial Engineering,Bandung,Indonesia
2. STMIK IKMI Cirebon,Departemen of Informatics Engineering,Cirebon,Indonesia
3. Bina Nusantara University,Mathematics Departement,Jakarta,Indonseia
4. Universitas Pertahanan RI,Departement of Machine Engineering,Bogor,Indonesia