In this paper we study the net effect of high-skilled emigration. Hence, we elaborate a simple theoretical model that studies the net effect of high-skilled emigration. The result showed that the emigration in the case where the fraction of human capital that emigrates is inferior to the...

We try to introduce in this paper an outline of explanation of the under development sources in the Arab world, by adopting the new definition of the social capital and institutional efficiency. It will be summarized around the intuition of spontaneous institution. It signifies the respect of...