List of Articles Open Access Article Abstract Page Full-Text 1 - Learning Automata Method for Channel Assignment in Wireless Cognitive Sensor Network Majid Gholipour Hoda Hadian Dehkordi M. Shahriari Open Access Article Abstract Page Full-Text 2 - Cost Malmquist Productivity Index for Bi-level Units: A Case Study from Bank Mona Habibpoor Mohammadreza Alirezaee Jalil Rashidinia Open Access Article Abstract Page Full-Text 3 - Sustainability assessment in concrete industry supply chain in stochastic environment فاطمه شعاع شرق Mansour Soufi AR. Amirteimoori mehdi fadaei Open Access Article Abstract Page Full-Text 4 - Estimation of Marginal Productivity of Supply Chains for Capacity Planning and Resource Allocation: A Case Study of the Power Industry مژگان پورعلیزاده Open Access Article Abstract Page Full-Text 5 - A survey of generalized derivatives and generalized subdifferential of convex fuzzy functions and their applications F. Kavari M. R. Baloochshahryari O. Sedaghatfar Open Access Article Abstract Page Full-Text 6 - MATHEMATICAL MODELING FOR IMPACT OF TRANSPORTATION IN COVID-19, REPORT CASE IN TEHRAN, IRAN Nasrin Eghbali Hosein Taheri Masoomeh Pourabd Ahmad Almasi