air pollution is one of the major issues is the use of fossil fuels. air pollution in different ways harmful effects of long-term, short-term, devastating and sometimes irreversible in humans, animals and plants life. air pollution leads to increased heart disease, breathing, decreased vision, warming, acidification, etc. one of the problems of air pollution. air pollution threatens the surviva...

Convergence hypothesis is one of the results of neoclassical growth model, which has been examined recently. This hypothesis has two forms of absolute and conditional Beta-convergence and implies that regions with lower per capita output have higher per capita growth rates. Since there is no data for regional GDP in Iran, there has been n study to test convergence hypothesis in Iran. Our main c...

This paper analyses the e¤ect of endogenous directed technical change in a resource-rich economy, embedding a version of Acemoglu’s model of directed technical change in a three-by-three trade theory model. Technical progress depends on entrepreneurs who either produce or adopt technology, and who endogenously choose which sector to operate in. The static e¤ect of a resource discovery is de-ind...

This paper investigates the growth factors of EU regions in the 1990s. We test the hypothesis that regional growth is determined by endogenous growth factors, trade and technological catching-up in a growth accounting framework. Our estimations suggest that growth of EU regions is positively related to the accumulation of physical and human capital. Innovation activity as well as international ...

To examine the effects of unilateral trade liberalization on growth and welfare of the liberalizing and partner countries through intraindustry reallocations, we formulate an asymmetric two-country Melitz model of trade and endogenous growth based on capital accumulation. We obtain two main results. First, each country’s mass of exported varieties, revenue share of exported varieties, and growt...