Ranking And Evaluating The Stochastic Efficiency Of IRALCO Maintenance Groups With Chance Constrained DEA Model

سال انتشار: 1395
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 490

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شناسه ملی سند علمی:

NRIME03_242

تاریخ نمایه سازی: 19 خرداد 1396

چکیده مقاله:

One of the problems facing plant managers, is evaluating the performance of different units. maintenancegroups that their job is to repair factory equipment and machinery are the units that evaluate their efficiency isvery important because their accurate and timely performance will be reducing costs . Planning unit of IranianAluminium Company (IRALCO) evaluates these units monthly and the reports are presented to seniormanagers. This assessment is based on the difference between finished orders and requested orders , But theindex is not appropriate . So , we use a chance-constrained DEA model with random input and output data onthe input oriented. A super-efficiency model with chance constraints is used for ranking. However, forconvenience in calculations a non-linear deterministic equivalent model is obtained to solve the models , Thenon-linear model is converted into a model with quadratic constraints to solve the non-linear deterministicmodel. Finally, twenty-eight maintenance groups of IRALCO evaluated with these models , that Repairs ofpots unit selected as the best group , So, other groups can considering this unit and improve their efficiency.

نویسندگان

Saman Malekian

Department of Industrial Engineering, Arak Branch, Islamic Azad University, Arak, Iran

Mohammad Izadikhah

Department of Mathematics, Islamic Azad University, Arak, Iran

Mohammad Ehsanifar

Department of Industrial Engineering, Arak Branch, Islamic Azad University, Arak, Iran

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