نشریه مدلسازی اقتصاد سنجی
سال سوم شماره 1 (پیاپی 8، زمستان 1396)

This paper has examined the effect of corruption on the allocation of talent in Iran's economy during the period of 1984-2014 and for discovering the effect of unobservable factors as well as political, social and economic structural changes, the structural time series model approach has been used. The results of the research indicate that increasing in corruption, financial development, growth of consumption government size and the share of value added of services sector in the GDP have distorted the allocation of talent in Iran during the period of 1984-2014

Nowadays information and communications technology (ICT) is an impartible section in the development countries, Unequal access is a common topic has been accepted in our era. We are looking for ways to increase Internet adoption and narrow its disparity across countries the global "digital divide". Previous work has focused on demographic, economic, and infrastructure determinants of Internet access that are difficult to change in the short run. In the research, content is a factor affective and short-time on internet adoption and digital divide economic has been considered. Our estimates, the language is accepted to adoption content. For this purpose by using simultaneous equation ways among 107 countries and languages, in 2005 to 2014 perioud in panel date shape. The results have been shown, that content has both directly and indirectly effective issue from internet acceptance canal on digital divide

The main purpose of the research examines the relationship between income inequality and economic freedom for 90 different countries of the OECD and NONOECD between 1995 and 2015. The results of Granger and Toda-Yamamato causality tests suggest the existence of a two-way relationship between these two variables and the Hasheo causality suggesting a one-way connection from the side of income inequality to economic freedom for member states and the causal relation from economic freedom to inequality for non-member countries.The results of GMM tests also showed that in the first relationship, economic freedom has a negative and significant effect on income inequality in OECD countries, but this effect is positive in NONOECD countries. On the other hand, the effect of democracy on income inequality is significant and positive in all three groups (OECD, NONOECD, and all countries). Finally, economic growth also has a negative and significant effect on income inequality in OECD countries and has a positive effect on NONOECD countries.. In OECD countries, the effect of democracy on economic freedom is positive and significant, but in the NONOECD countries, and according to the first difference method, the relationship etween these two factors is negative and significant

The sustainability of the stock market as a result of changes in economic variables is one of the most important issues for economists and investors and stock market activists. Hence, this study base on study of Fouejieu (2017), investigates the sustainability of stock market in the Tehran Stock Exchange (TSE) due to changes in the inflation rate and itsuncertainty in different regimes of the TSE. To this, investigate the relationship between inflation rate and its uncertainty with stock market return uncertainty using the monthly data from 1998:4 to 2016:3, by applying the Markov Regime Switching Generalized Auto Regressive Conditional Heteroskedasticity approach. And then, we calculated the duration of sustainability in the TSE as a result of inflation changes. The results indicate that the inflation rate has a significant positive effect in the high return regime (bull regime) but, this effect is not statistically significant in the low return regime (bear regime). Moreover, inflation uncertainty has asymmetric effects in different stock market regimes. As well as, the findings indicate the probability of sustainability regime 1 (high return regime) is 29 percent and the probability of sustainability regime 2 (low return regime) is equal to 75 percent. Therefore, the forecasting results indicate that the sustainability of the low return regime will be higher than the high return regime and TSE will be come back faster to the normal situation when it comes out of a low return period (bear regime) and entering to the high return period (bull regime).

In this paper to survey effects of energy prices index on labor and capital demand of ISIC industries such as food industry, coke and oil industry, chemical productions, main metals, on metal and motor vehicles industries are selected because they have more value added, more employment and energy consumption. Therefore, we use from Mork price decomposition and dynamic panel method for Tehran, Isfahan, Khoozestan, Hormozgan and Markazy providences toward of 1995-2014. Results reveal that capital intensive industries are elastic respect to energy price and asymmetric effects respect to energy index price deviation is more than labor intensive industries.

One of the most usage of evaluating Empirical Validity of Asset-pricing Models is GRS test. In this paper we implement the GRS test for CAPM and Fama-French 3-factor asset pricing models with explicit consideration of statistical power, by employing the optimal significance level and equal-probability test. In this regard we use the 25 size-B/M portfolios analysed by Fama and French to facilitate the empirical comparison among the alternative models. The result show GRS test rejects all two asset pricing models at the conventional significance level.. At the optimal significance, we find that the GRS test cannot reject the null hypothesis of portfolio efficiency most of the time for CAPM and Fama-French 3-factor models