Economic  Modeling: 5 (6)

Open Access Article

1 - Effects of Good Governance on Economic Growth in the Selected Countries of OPEC and OECD

Abstract      Good governance is considered as an opportunity to encourage local and foreign investment, increase economic growth, ensure economic security, and improve business conditions by using 6 measures of “Voice Right and Accountability More

Abstract      Good governance is considered as an opportunity to encourage local and foreign investment, increase economic growth, ensure economic security, and improve business conditions by using 6 measures of “Voice Right and Accountability”, “Political Stability and Non-Violent Conditions”, “Government Efficiency and Effectiveness”, “Law Standards”, “Rule-Oriented Governance”, and “Anti-Corruption Controls”, which are measured by World Bank for different countries.      In this article, the relation between the quality of governance and the economic growth has been investigated, based on the theoretical principles and different effective channels in OPEC and OECD by using panel data during 1996-2007. Results show that there is a positive relation between the quality of governance and the economic growth in both groups and the effect of the quality of governance on the economic growth in OPEC is more than the OECD countries. Also, political stability and anti-corruption controls in OPEC and OECD countries bear the most effects respectively. Manuscript profile

Open Access Article

2 - Relationship Between Economic Freedom and Public-Private Partnerships and Developing a Model for Iran

     Developing infrastructure projects and providing effective, high-quality services are among the critical factors in economic growth. By investigating the related literature, we can find a relation between economic freedom and public-private part More

     Developing infrastructure projects and providing effective, high-quality services are among the critical factors in economic growth. By investigating the related literature, we can find a relation between economic freedom and public-private partnership. In this paper, the relation between economic freedom and public-private partnership has been investigated by using panel data of 29 developing countries during 1999-2008.             The results show that only ownership index has direct relation with public-private partnership in Iran and other indices, such as "trade freedom", "investment freedom", and "financial freedom" has statistical, inverted relation with public-private partnership; however, the results indicate that there is no statistical relation between "business freedom", "financial freedom", "government size', "monetary freedom", "anti-corruption freedom" and public-private partnership Manuscript profile

Open Access Article

3 - Evaluation of Development Plan Execution on Fuel Programming and the Related Indices, Using DEA Method

Abstract      As fuel is very important in the transport sector, schematization to reach the optimum situation in using fuel and optimize all affected factors is always critical. Various indices, including consumption, import, production, price, etc More

Abstract      As fuel is very important in the transport sector, schematization to reach the optimum situation in using fuel and optimize all affected factors is always critical. Various indices, including consumption, import, production, price, etc can be considered in measuring the success of each of the applied policies; however, as these indices can not be judged by their increase or decrease, the way to reach the optimum situation is not clear.      In this paper, DEA method is applied to investigate both identical and different behaviors of gasoline indices in the second and third development plans during 1989-2005. Results indicate that the behavior of the main indices is different in each development plan; whereas, managing trade-off between some indices in each development plan would improve the performance to reach the perspective. Meantime, optimal points of all indices cover all the objectives and about 12 quintet and sextuplet indices are used as the best criteria to determine program success.       Manuscript profile

Open Access Article

4 - Factors, Affecting Current Account Deficit in Iran

     The aim of this paper is to evaluate the factors, affecting current account deficit in Iran economy by applying Co-integration and Vector Error Correction approach during 1956-2006. Results indicate that real exchange rate, oil and gas exports, More

     The aim of this paper is to evaluate the factors, affecting current account deficit in Iran economy by applying Co-integration and Vector Error Correction approach during 1956-2006. Results indicate that real exchange rate, oil and gas exports, and terms of trade have positive impact, whilst government budget deficit has negative impact on current account balance. Oil price shocks have positive and statistical impact on current account balance. Also, the effect of exchange rate unification policy on current account balance is negative, but not significant.    Manuscript profile

Open Access Article

5 - Relation Between Macroeconomic Variables and General Index in Tehran Stock Exchange

     Stock exchange index is the most important factor in identifying the stock exchange of a country. The main purpose of the present research is to examine the relations between macroeconomic variables and general index of the stock exchange; hence More

     Stock exchange index is the most important factor in identifying the stock exchange of a country. The main purpose of the present research is to examine the relations between macroeconomic variables and general index of the stock exchange; hence, the basic question of the research is "Is there any relation between macroeconomic variables, including CPI, foreign exchange market rate, oil price and general index in Tehran Stock Exchange?"      In order to examine hypotheses, we have used econometric methods, OSL Method, Linear Regression Model, Dicki Fuller and Philips Prone Model, Fisher Test and White Test during 2001-2008 quarterly.      The results show that there is no statistical relation between CPI, foreign exchange market rate and general index in Tehran Stock Exchange; however, there is a statistical reverse relation between oil price and general index in Tehran Stock Exchange. Manuscript profile

Open Access Article

6 - Theoretical Analysis of Environmental Kuznets Curve (EKC)

In this paper, we have tried to examine how EKC inverted U-shaped curve of economic growth and the environmental quality is created, based on the microeconomic theories and optimal dynamic situations. First, different ways of shaping EKC inverted U-shaped curve, based o More

In this paper, we have tried to examine how EKC inverted U-shaped curve of economic growth and the environmental quality is created, based on the microeconomic theories and optimal dynamic situations. First, different ways of shaping EKC inverted U-shaped curve, based on both static and dynamic models have been described, considering the said hypotheses and conditions. Findings show that people's preferences change during the process of economic growth is the main factor in creation of Kuznets curve. Manuscript profile

Open Access Article

7 - Estimation of Production Factors and Productivity Model in Karoon Oil & Gas Production Company

Abstract      Productivity is one of the main factors in the optimal use of resources and facilities in the production units and services. Oil and gas companies operate as the leading industries and have significant shares in the export, national pr More

Abstract      Productivity is one of the main factors in the optimal use of resources and facilities in the production units and services. Oil and gas companies operate as the leading industries and have significant shares in the export, national production and the government revenues in Iran. Karoon Oil and Gas production Company, as the most important Iranian company in the said field, has been chosen for our case study during 1987-2009. This estimation is based on the time-series techniques, by using unit root tests, co-integration and error correction models.        Results indicate that Cobb-Douglas Production Function is more compatible with the theory of Production Function. The empirical findings also show that the average of productivity growth, labor elasticity, and capital elasticity in Karoon Oil and Gas production Company are 8.3%, 0.64 0.15% and 0.55% respectively. Finally, The Wald Test result show that there is about 1.34 increasing outturn to scale.     Manuscript profile

Open Access Article

8 - A Research on Factors, Affecting National Savings in Iran

The main purpose of this paper is to examine the factors, affecting the rate of national savings in Iran's economy, using OSL, ARDL, and ECM models during 1959-2004.      The results indicate that economic growth has positive effect on the rate of n More

The main purpose of this paper is to examine the factors, affecting the rate of national savings in Iran's economy, using OSL, ARDL, and ECM models during 1959-2004.      The results indicate that economic growth has positive effect on the rate of national savings in both short-term and long-term. Fluctuations of oil incomes in short-term and long-term have negative effect on the rate of national savings.      The ratio of net export to GNP in the short- and long-term affects the rate of national savings positively, whose short-term effects is much higher than the ones in the long run; so, the results confirm Maizels – Lee Theory in Iran's economy; whilst, inflation rate coefficient is positive, but not statistically meaningful in the short- and long-term period. Manuscript profile

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