فهرس المقالات Reliability allocation . Design and production cost . Reliability improvement difficulty . Sigma level . Design structure matrix (DSM) حرية الوصول المقاله صفحة الملخص نص كامل 1 - Developing an economical model for reliability allocation of an electro-optical system by considering reliability improvement difficulty, criticality, and subsystems dependency Maryam Mohamadi Mahdi Karbasian