چکیده:
Increases in workers' wages and fuel and energy costs lead to its reduction. Furthermore, the small degree of collusion among sugar factories in the oligopolistic market for sugar sales indicates non-monopolistic behavior of producers. This article aims to introduce a theoretical model to describe the behavior of firms dependent on a processing industry, in which the primary production input is converted into the final product with the help of secondary inputs and the application of processing technology. Firms purchase the primary input from an oligopolistic market and supply demand and the final product in an oligopolistic market. The marketing profit margin equation for eleven selected sugar factories in the Tehran Stock Exchange was estimated using a hybrid method of cross-sectional and time-series data. The result of the article shows that increasing the share of purchasing the primary input and the share of selling the final product leads to an increase in the marketing profit margin, but
خلاصه ماشینی:
Investigation of factors affecting the profit margin in two oligopolistic markets of processed goods and primary production inputs1 Dr. Majid Ahmadian* Dr. Mohammad Ali Motafaker Azad** Abstract This article, to describe the behavior of firms belonging to a processing industry, introduces a theoretical model in which the primary production input is converted into a final product with the help of secondary inputs and the application of processing technology.
The organization of the article is such that in the second part, to examine the behavior of industry-related firms, theoretical foundations are presented in the form of an economic model in which the oligopsony of purchasing the main input and the oligopoly of selling the final good in two interrelated markets are studied.
,wim,qi) To calculate the marginal cost of production, we take the derivative of this relationship with respect to qi: (3)(refer to page image) This relationship (refer to page image) is dedicated to the change in the amount of main input required to convert into one additional unit of the final good.
The revenue from the sale of the final product of firm i is equal to Ii-pqi, which, by taking the derivative with respect to qi, calculates the marginal revenue as follows: (5)(refer to page image) In this relationship, (refer to page image) is the slope of the goods demand function and has a negative sign.
These components include the marginal processing cost, the deviation in the two oligopolistic markets of supply and sales of the final good, and the demand for purchasing the main input.
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