TY - JOUR ID - 122997 TI - Study of the Relationship between Concentration, Skilled Labor and Efficiency Using the Fuzzy Logic Approach in Iranian Manufacturing Industries JO - International Journal of Resistive Economics JA - OAJRE LA - en SN - AU - Arbabi, Laleh AU - Shaihaki Tash, Mohammad Nabi AD - Department of Industrial Engineering, Islamic Azad University, Zahedan, Iran. AD - Department of Economics, University of Sistan and Baluchestan, Zahedan, Iran. Y1 - 2018 PY - 2018 VL - 6 IS - 4 SP - 1 EP - 18 KW - Concentration Index KW - Skilled Labor KW - Technical Efficiency KW - Fuzzy logic DO - N2 - The central goal of this research is to investigate the relationship between concentration ratio, skilled labour and efficiency in Iranian manufacturing industries. In order to measure the technical efficiency, we use the stochastic frontier analysis (SFA) method and data related to 131 of industries at 4-digit level of ISIC code during 1996-2009. To achieve the aim of study, we develop an analytical framework based on the fuzzy logic. Results suggest that there is a positive relationship between efficiency and skilled labour, while the concentration index has negative impact on industry's efficiency. UR - https://www.oajre.ir/article_122997.html L1 - https://www.oajre.ir/article_122997_695a816ba02c1c1319e0c22b10d5dd80.pdf ER -