Economic  Modeling: 4 (27)

Open Access Article

1 - Targeting the Price of Energy Carriers and Consumption Behavior of Urban Households in Iran
S.M. Ahmadi J. Pajooyan E. Gholami

The main purpose of this paper is to investigate the composition of consuming expenditures of urban households in Iran under various scenarios of the price of energy carriers. For this purpose, initially, goods and services consumed by urban households are divided into More

The main purpose of this paper is to investigate the composition of consuming expenditures of urban households in Iran under various scenarios of the price of energy carriers. For this purpose, initially, goods and services consumed by urban households are divided into 7 groups and the share of total household expenditures is estimated by applying an almost ideal demand system (AIDS) and the data of the years 2001-2010 for 10 cost deciles. Then, the average of the share of each of these groups is simulated for the years 2011 -2013 under two scenarios of 20 and 85 percentage of the price. The results indicate that using either of these two scenarios does not change the consumption composition of urban households and consumers preferences before relating the price to the needs and priorities. So, if the government plans to impose steep price scenarios, it should follow supporting supplements policies to compensate the decline of consumer welfare. Manuscript profile

Open Access Article

2 - Effects of Industrial Localization Economies and Urbanization on Economic Growth: The Evidences of Iranian Markets
m. sameti M. Fathabadi H. Ranjbar

In the field of regional economics, the effects of industrial agglomeration are defined as the product efficiency derived by industrial interdependency and the firms are usually considered to be external economies in decision-making process. The aim of this paper is to More

In the field of regional economics, the effects of industrial agglomeration are defined as the product efficiency derived by industrial interdependency and the firms are usually considered to be external economies in decision-making process. The aim of this paper is to provide a model for new economic geography based on endogenous agglomeration theory of Krugman (1991) in Iranian markets. Hence, by estimating Solow generalized function, the effect of urbanization and industrial agglomeration is examined during 2000–2010 in Iran provinces. The results indicate that core-periphery theory is not correct in the provinces of Iran; so that spillover effects of outside market are significant and positive, while home market effect statically is not significant. So, developing the road transportation infrastructures and strengthening the markets linkages play a determinant role in the appearance of spillover effect of outside market and then on the growth of the provinces. Manuscript profile

Open Access Article

3 - The Relationship between Efficiency and Industrial Concentration of Food and Beverage Industries in Iran
K. soheili SH. Fattahi M.S zabihi dan M. hadizadegan

In this paper, the relationship between scale efficiency and industrial concentration of 22 food and beverages industries are studied during 1997-2007. In this regard, the scale efficiency is calculated firstly. Then, industrial concentration is assessed by using Herfin More

In this paper, the relationship between scale efficiency and industrial concentration of 22 food and beverages industries are studied during 1997-2007. In this regard, the scale efficiency is calculated firstly. Then, industrial concentration is assessed by using Herfindahl- Hirschman index. Furthermore, by the help of Granger causality test, the causality relationship between scale efficiency and concentration variables is determined. The results of this research indicate that there is one-sided causality from concentration toward efficiency. Estimated Panel model confirms the validity of QL theory using 2SLS approach and shows that the increase of concentration reduces the efficiency of food and beverage industries in Iran. Thus, in order to increase the efficiency of food and beverage industries, policy makings should be focused on reducing concentration in these industries. Manuscript profile

Open Access Article

4 - Performance Evaluation Health Houses of Firouzkouh City by Using Data Envelopment Analysis
N. shoja A. Gholamabri N. khalili

Performance evaluation health houses of Firouzkouh City and consideration of their efficiency, is the main purpose of this study and it can help improving the efficiency of health houses  and determining appropriate strategies and programs to advancement and develo More

Performance evaluation health houses of Firouzkouh City and consideration of their efficiency, is the main purpose of this study and it can help improving the efficiency of health houses  and determining appropriate strategies and programs to advancement and development of these goals. In this study,  we have used the point of views of  the experts and professors of operation article and we studied the previous investigations to evaluate the performance of health houses. So, we determined 2 important inputs and 3 outputs  from March 2012 to March 2013. Then we evaluated their efficiency by CCR model and found that 5 heath houses among these 18 health houses obtained number 1 in efficiency houses . Finally we ranked the houses  based on  the efficiency by AP-CCR.  Finding showed that Arjomand, Mozdaran, and Jeliz Jand health houses allocated to the first three points respectively. Manuscript profile

Open Access Article

5 - Parametric Estimation of Lerner Index and Evaluation of Competition and Monopoly Rate in Iran Industries
M.N. Shahiki Tash A. Norouzi

In this study, the aim is to investigate the rate of competition and monopoly in the manufacturing industries during 1996-2008 by using non-structural model and Lerner index based on parametric approach. The results indicate that the value of concentration index of the More

In this study, the aim is to investigate the rate of competition and monopoly in the manufacturing industries during 1996-2008 by using non-structural model and Lerner index based on parametric approach. The results indicate that the value of concentration index of the most of industries varies between 0.30 to 0.50 implying effective monopoly structure and the gap between price and marginal cost. Also, "Manufacture of coke" and "Manufacture of motor vehicles" by Lerner index of 0.62 and 0.25 have highest and lowest monopoly degree, respectively. Assessment of the trend of industry's Lerner index represents the improvement of the competition conditions the period while the gap between the price and marginal cost is at a relatively high level.   Manuscript profile

Open Access Article

6 - Forecasting OPEC Crude Oil Price by Applying Gray Forecasting Model
H. Javanmard S. F faghidian

In world economy, crude oil is considered as one of the most strategic commodities playing a vital role in the determination of many regional and global equations. So, it is well known that an intense fluctuation of the oil price causes large recession in OPEC countries More

In world economy, crude oil is considered as one of the most strategic commodities playing a vital role in the determination of many regional and global equations. So, it is well known that an intense fluctuation of the oil price causes large recession in OPEC countries. So many researchers attempt to forecast crude oil price while oil market is one of the most complex, turbulent and chaotic international financial markets. In present research, gray system theory is utilized to model and forecast the price of crude oil. The results represent that gray forecasting model significantly improves the accuracy of the forecasting operation. Manuscript profile

Open Access Article

7 - The Participation of Married Women in Iranian Labor Market: Logit non-linear modeling
Z. Sarani B. Keshte gar Gh. Keshavarz hadad

Abstract In the present paper, logit non-linear massive model is presented by using the maximum likelihood method for binary model of Iranian female labor participation based on income-expenditure data of the households in 2006. In logit non-linear model, a continuous More

Abstract In the present paper, logit non-linear massive model is presented by using the maximum likelihood method for binary model of Iranian female labor participation based on income-expenditure data of the households in 2006. In logit non-linear model, a continuous mathematical function like power, exponential, polynomial and logarithmic are used for independent variables such as husband income, education, woman age, wealth and the number of children above and under 6 years old. Non-linear equation of married women participation based on econometric comparison standards like White Test and Lagrange coefficient statistics is compared with parametric and non-parametric Logit models. The results of modeling represent that the selection of an appropriate mathematical function can provide a suitable flexibility in binary modeling and so increase the ability and decrease the errors of the modeling compared to parametric and non-parametric logit models. Also, this kind of modeling approach has a variance homogeneity as well as non-parametric model, but here there is less error in modeling. Manuscript profile

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