List of Articles Scale efficiency Open Access Article Abstract Page Full-Text 1 - Survey Economies of Scale Efficiency Changes in government and Private Banks by Using Stochastic Frontier Production Function Farid Sefati Taghi Torabi Kambiz hozhabr Kiani Open Access Article Abstract Page Full-Text 2 - The Relationship between Returns to Scale and Size of Companies using Data Envelopmment Analysis in Iranian Insurance Companies Elham Sadeghi Mohsen Rostami Malkhalife Mohammadreza Miri Lavasani Mohamadhamed Khanmohamadi Open Access Article Abstract Page Full-Text 3 - Determining the Technical Efficiency of Hospitals affiliated with Kashan University of Medical Sciences using Data Envelopment Analysis: 2011-2016 Mohammad Ali Raayatpanah Monireh Sadeqi Jabali Razieh Farrahi Panos Pardalos