بررسي هزينه هاي خارجي توليد برق در ايران ( مطالعه موردي نيروگاه برق شهيد رجايي با تاكيد بر آلاينده هاي( SO2وNO2)

Comparative Analysis of the Factor Productivity in Iranʹs Large Manufacturing

The main objective of this study is to investigate the production factors productivity in large manufacturing sub-sectors. For this purpose, using statistical data for period 1972-2004,we have tried to study and analyze the trend and level of production factors productivity (partial and total productivity) in each sub-sectors classified according to ISIC two digits code. The average and marginal productivity indices have been used for evaluation of partial factors productivity. The total factors productivity (TFP) is estimated via the production functions approach The findings are indicative of relatively good status of partial factors productivity in manufacturing of chemical products and manufacturing of basic metals in comparison with other sub-sectors. But the status of partial factors productivity in other sub-sectors specially in manufacturing of textile, wearing apparel and leather product and manufacturing of wood and products of wood seems to be fatal. The study of TFP using estimation of production functions of large manufacturing sub-sectors reveals that the largest rate TFP growth is respectively related to the manufacturing of machinery, equipment, and metal instruments and products, manufacturing of basic metals and manufacturing of chemical products. As for the other sub-sectors, TFP growth rate is not statistically different from zero. The findings also indicate that the events like war, revolution and sanctions have negatively affected TFP growth rate in the manufacturing sub-sectors