1. a Department of Industrial Engineering , Galatasaray University , Ciragan Caddesi 36 Ortakoy, 34357 Istanbul, Turkey
2. b Equipe de Recherche en Systèmes de Production de l’IFMA , LIMOS UMR CNRS 6158, IFMA, Campus des Cézeaux, BP 265, F-63175 Aubière, France