Efficiency of 4 stage supply chain in presence of non discretionary , undesirable and negative factors Using SBM model in DEA
Subject Areas : Labor and Demographic Economicsmehdi shoga 1 , farhad hoseinzadeh lotfi 2 , امیر غلام ابری 3 , Alireza Rashidi Komijan 4
1 - PhD student in Industrial Engineering, Faculty of Engineering, Islamic Azad University, Roodehen Branch
2 - Professor, Department of Applied Mathematics, Faculty of Basic Sciences, Islamic Azad University, Science and Research Branch, Tehran, Iran,
3 - عضو هیات دعلمی واحد فیروزکوه
4 - Department of Industrial Engineering, Firozkooh Branch, Iran
Keywords: Cement industry, Network data envelopment analysis, Undesirable outputs, Keywords: Supply chain efficiency, Non-Discretionary Factors,
Abstract :
The purpose of this paper is to evaluate the performance of a four-stage supply chain in the presence of uncontrollable, undesirable and negative data in the cement industry. For this purpose, the Slack-Based Measure (SBM) model in network data envelopment analysis is presented to evaluate the performance of such chains. Then, 42 cement companies present in the stock exchange and securities, the corresponding chain of each of which has four stages of supplier, producer, distributor and customer, were evaluated during the period 1394-1394. Based on the implementation of the model, 5 companies have been efficient for three consecutive years and the efficiency score of the rest of them has been less than 1 in all years or some years.
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