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Due to the lack of General Practitioners (GP) in the past two decades in Iran, increasing the number of General Practitioners has been on the strategic agenda for health sector. However, this was an appropriate action for the time but, these augments unfortunately continued without scientific considerations, while these were based on the needs of society in that time. This led to some problems for all sectors in the health system. Unemployment, misemployment, underemployment were the results of these policies. Government suffered from heavy cost of educating General Practitioners. the system faced with inequality in their performance as well. Because of the importance of the subject, this research is done for avoiding such problems. It uses mathematical and economic models and techniques to estimate the number of GP from 2006 to 2011, which is believed to be essential for the health system. In this research, Cob-Douglas production function and partial adjustment model have been used for estimating GP labor demand function, then using growth rates of variables and growth mean of the period for each variable, the needed number of GP has been estimated. The future need of GP for years of 2006, 2007, 2008, 2009, 2010, 2011 is respectively, 3864, 4507, 5282, 6224, 7384, and 9011. The elasticity is also calculated for the variables: (RInv), (RVA), (L). Point elasticities for the above variables are respectively 0.035, 0.041, and 0.01.

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This paper investigates the effects of underground economy on the Iran’s imports demand for intermediate, consumption and capital goods during 1971-2011. In this study, the size of the underground economy of Iran has been estimated by using fuzzy logic and demand for imports has been analyzed within intermediate, capital and consumption goods separately. Our findings show that the average size of the underground economy of Iran is 20.64 % of Gross Domestic product(GDP) for 2001-2011 period, and the effect of the underground economy on the demand for imports of intermediate goods is negative, but underground economy affects positively the demand for imports of capital goods and consumption groups. In addition, import demand for intermediate goods with respect to the underground economy is less elastic and negative-signed, while import demand for capital goods and consumption goods with respect to the underground economy is less elastic and positive-signed.

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Iran is one of the most energy-rich countries subsidizing energy carriers, especially in the agricultural sector, to the extent that the resulting growth is at the expense of the environment. This study tries to investigate the potential impacts of energy price reform on the agro-environment, based on the Marginal Abatement Costs (MACs) of emissions. Firstly, the energy demand function of the agricultural sector and the probable reaction of inputs and outputs to the reform were estimated. Then, using an Input Distance Function (IDF), the country and provincial-wide MAC were simulated through counterfactual reform scenarios. The results indicated that energy price reform would increase the MAC of emissions and socio-environmental benefits. However, the reform adversely affected the income of farmers. Also, the results provided detailed information both at a nationwide and provincial scale. Finally, it was recommended to implement complementary policies alongside reforms to compensate for the reduction in farmers’ income.

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Despite its rich energy resources, Iran is one of the top energy-intensive countries in the world. Improving technology and using new innovations in energy consumption and the production process of goods can reduce energy intensity in the country. In order to investigate the effects of technological innovation on energy consumption, this study uses the Marshallian Demand Framework and bounds testing within the Autoregressive-Distributed Lags (ARDL) method during 1980-2017. The results of this study showed that technological innovation, as an exogenous element in the energy demand function, increases energy efficiency and thus reduces energy consumption at a certain level of economic production. The results of this study confirm the theoretical predictions that the short-run GDP elasticities of energy demand are less than the long-term ones. However, controlling the effect of technological innovation, the study finds that increasing GDP and trade openness create rebound effects of technology innovation on energy consumption.

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The role of money in the design and implementation of monetary policies for price stability, especially since 2007-2009 global financial crisis, has been reintroduced as a major policy issue in both developed and developing countries. In this regard, the money demand function is one of the most important components of any monetary system, which plays a decisive role in the mechanism of transfer of monetary policy to the real sector of the economy. Therefore, in order to analyze monetary issues and to provide appropriate solutions for overcoming economic problems, it is necessary for the policymaker to have a correct understanding of the money demand function. This paper answers the question of whether sudden changes in money supply cause instability in money demand function. Hence, the present study, with Markov switching approach and using simple sum and Divisia, estimates the demand for money function in the Iranian economy during 1988q2 -2020q2 and evaluates its stability. The results indicate that demand for money function is stable in regime one but being in regime two and three, namely the average growth of money and the sharp growth of money, has led to instability in the demand for money function, and the diversion of the monetary policy objectives.