JOURAL OF ECONOMIC STUDIES
Year:2011 | Volume:1 | Issue:2|Papers Count:7

Since the rapid economic and industrial development in developing countries, largely related to the level of energy consumption and highest share of world trade and activity is devoted to energy, in this paper the effects of foreign trade, oil prices and income on energy consumption have been studied in eight member of Eco organization over the period 1994 to 2009. The empirical results from employing the econometric techniques of panel data show that foreign trade (sum of exports and imports) and income have a positive impact while oil prices have a negative impact on energy consumption. Also, in order to realize the more detailed results, separately analysis of exports and imports suggest that the effect of exports and imports on energy consumption is positive.

The fundamental theorem of asset pricing and markets efficient has been explained price volatility in financial markets under assumption of arbitrage and rational human beings. But these theoretical descriptions due to his disability of too much price volatility in recent decades, by the theories of financial behavior were challenged. This theorem relying on the basic principles of psychology and sociology has suspected of fundamental assumption about human behavior patterns and has described excessive fluctuations of price.This article, based on theories of financial behavior has described failure of presumption of fundamental patterns of investors gerrymander individual and collective.Then we have used state space and the kalman filter for extraction bubble price as an unknown variable and effect of herding behavior and psychological factors that decreased psychological security and increased market risk on rational bubble.The results of this study indicate that rational bubble during 1387-1376 in Tehran Stock Exchange is affected by factors mentioned.

Date is one of the important export products in Iran's agriculture sector and Iran has a considerable share of world export of this product. Specifically, the Iran' s share of the world date export is 43 percent in 2010.The purpose of present paper is to examine the hypothesis which is the exchange rate pass through of date is imperfect. On the other word, we expect that one percent increase in the exchange rate, the export price of date will increase less than one percent. For this, we have estimated the export price equation of date during time period 1983-2006. We have considered some explanatory variables including production, export and real exchange rate in this equation. The results indicate the verification of the hypothesis, i.e. being exchange rate pass through of the date imperfect.

This study investigated the relationship between ownership structure and the company's performance based on the modem criteria of Q To-bin and the economic value added (surplus value) among the companied admitted in Tehran stock exchange. Q Tobin and models of economic value added were used to test hypotheses. Samples of the study consist of 103 companies in an interval from 2006 to 2010. Panel data procedure and Evewis software were applied to analyze data. The results showed a significant and positive relationship between ownership structure and the company's performance while a significant and negative relationship was identified between real ownership and company's performances. Moreover, a significant and positive relationship was found between company's performance and ownership concentration.

The aim of this article is the survey direct and indirect coefficients for creation types of Environmental contaminants for different economic sectors. For this purpose in this study, has been used of input-output table for Iranian economy and diffusion of environmental contaminants statistics. By presentation environmental input-output table that include seven contaminants of air (NOx, SO2, CO2, SO3, CO, CH, SPM), it is estimated measure of diffusion and cofficient of diffusion contaminants for different sectors of Iranian economy else.The results indicate that non metal mineral products, food industry and chemical industry have the highest direct and indirect cofficient for pollution reduetion. The highest cofficient for diffusion Co2 is related to transport, water and non metal mineral.

The main purpose of this study is to investigate the effect of terms of trade shocks on trade balance of Iran. In this research, the impacts of HLM have been studied involving three basic variables: terms of trade, real GNP and trade balance. The necessary statistical information has been collected annually from 1959 to 2001. The findings showed that in comparison to other variables, trade balance has less externality and the role of terms of trade in short and long -run fluctuations of trade balance is significant. The research findings also showed that a positive shock of terms of trade will cause a sudden increase in trade balance by as much as 100% of its initial value; although this improvement will significantly decrease in future periods. In other words, trade balance improvement, caused by shocks is temporary and these shocks don't have permanent impacts on trade balance. To apply the research findings, it can be mentioned that in an open economy, using policies such as controlling monetary value, diversity of export, and stimulating investment sector, the economical conditions could be effectively stabilized after terms of trade shocks.

Given the importance of oil industry in GDP, Foreign Exchange Resources and share of oil Revenues in the Budget, Estimate of Productivity and Elasticities of production factors is of special impartant.In this regard, Maroon oil & gas producing company with 15 percent of total oil production through our country, was chosen as a case study and its productivity and Elasticities production factors during 1989-2009 was estimated. This estimation is based on Time-Series techniques, Using Unit Root tests, Cointegration and error Correction Models. The Results Indicate that Cobb-Douglas Production Function is more Compatible with theory of Production Function and Average productivity growth in the Maroon oil & gas producing company is 7.6. The Imperial Findings Show That Labour Elasticity, Capital Elasticity and Energy Elasticity are 0.66, 0.31 and 0.61 Respectively. The Wald Test Result Indicates That There is Increasing return to Scale that is Equal to 1.596.