نویسنده: sharify، nooraddin؛
پاییز 1385 - شماره 17 ISC (18 صفحه - از 41 تا 58)
کلید واژه های ماشینی : Linear Programming Model Social Accounting ، The SAM Golestan Province Iran ، GRP ، The Regional Allocation Public Investment ، The Gross Regional Products ، Model Social Accounting Matrix ، Investment ، The GRP ، Model Social Accounting Model ، Error
This paper proposes a procedure for an effective investment allocation: a Linear Programming Model using a Social Accounting Matrix (SAM). The Gross Regional Products (GRP) is the objective function. Several constraints, such as job creation for different levels of human force, income distribution inequality, supply and demand constraints for products, are considered in the model. The economic sectors of the region for a certain proportion of products are ranked with respect to the above objective function and constraints for any level of investment. The model is examined with the SAM of the Golestan Province in Iran for the year 1993/1994. The study shows that the model introduced can lead to a maximum level of GRP with respect to other goals and constraints for any level of investment.خلاصه ماشینی:
"In the second stage, a new solution can be obtained for the highest rank sectors by adding the supply or demand constraints on products from relationship Error! For instance, based on above calculations, a collection of 17820, 93579, 15160, 2085 and 14215 million rials worth production in Metal Products, Communication, Education, Health and Public Services sectors, in that order, will maximise the GRP of the region considering the above constraints. Table 1: Ranking of sectors based on objective function and constraints Rank Sectors No. entered Dropped The Maximum GRP (1000 rials) 1 16,21,24,25,26 16,21,24,25,26 - 246679642 2 6,16,21,24,25,26 6 - 235225805 3 5,6,16,21,23,24,26 5,23 25 232564759 4 6,8,16,21,23,24,26 8 5 231558224 5 6,8,16,18,21,23,24,26 18 - 231261749 6 5,6,7,8,16,18,21,23,24,26 5,7 - 230816799 7 4,5,6,7,8,16,18,21,23,24,25,26 4,25 - 225097617 8 4,5,6,7,8,12,16,18,21,22,23,24,25,26 12,22 - 224269886 9 4,5,6,7,8,12,15,16,18,21,22,23,24,25,26 15 - 224110824 10 4,6,8,12,13,16,21,23,24,25,26 13 5,7,15,18,22 221355073 11 3,4,6,7,8,12,13,14,16,18,21,22,23,24,26 3,7,14,18,22 25 220790636 12 3,4,6,7,8,12,13,14,16,18,21,22,23,24,26,27 27 - 220574601 13 3,4,6,7,8,12,13,14,16,18,21,22,23,24,26,27 - - 220574601 To conclude, according to Fig. 2, each stage leads to a higher (or at least an equal) optimum value for GRP in comparison with the next one (position of B in compare to C) if there is no constraint for its sectors’ supply or demand and it can be fully implemented. In addition, dividing the maximum available GRP associated to any stage by their related required investment, the values of GRP resulting from one million rials investment for different collections of sectors were obtained (see Table 2)."
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