Abstract. Considering the need to save energy consumption in less developed countries, it seems necessary to identify the effective factors of energy growth in the economy of OPEC countries. Energy intensity represents the energy required to produce a unit of product at the national level. Energy intensity at the level of an industry or a specific production process is calculated in terms of ph...

Using a deterministic model for dairy herd according to milk pricing system in Iran, the economic weights of milk production, fat percentage, protein percentage and herd life with minimized cost were identified, while restricted total input and total costs were variable in animal unit. By data simulation and the data obtained from 3 different dairy herds in Iran, the sensitivity of economic val...

Considering the results of their previous research in 2000, when the shock impacts of production, price levels and money on Iran’s macroeconomic variables such as growth national product (GDP) and price levels were studied, the authors began examining the subject in the open economy. Hence, they entered a new variable i.e. foreign exchange into the model. Having expounded on the model, the auth...

In recent years, the development of Securities markets has contributed greatly to the flourishing and development of countries. Having a structured and dynamic capital market has been one of the basic requirements of countries on the path of development, and the role of this market in creating economic equilibrium is known to everyone. Therefore, explaining the volatility of the stock market is...