1. Arçelik A.Ş. (Reseach Engineer),Computer Engineering dept. Galatasaray University (MS Candidate),Eskişehir,Turkey
2. Galatasaray University (of Assist. Prof.),Computer Engineering dept.,Istanbul,Turkey
3. Arçelik A.Ş. Refrigerator Plant,R&D Department (Research Engineer),Eskişehir,Turkey