The Aggregate Effects of Trade and Migration: Evidence from OECD Countries Two large but separate bodies of literature analyze the economic effects of international trade and immigration. Given that several factors are important determinants of both trade and migration flows, the previous studies are vulnerable to a potentially serious omitted-variables bias, questioning the validity of existin...

Education usually shows a relationship with self-rated health such that those with highest education have the best health and those with lowest education have the worst health. We examine these educational gradients among Asian immigrants and whether they differ by country of origin, duration in the United States, and generational status. Migration theories suggest that recent immigrants from p...

We consider a mathematical model for the group size determination by the intra-reactions, self-growth, ostracism and fission within a group, and by the inter-reactions, immigration and fusion between two groups. In some group reactions, a conflict between two groups occurs about the reaction to change the group size. We construct a mathematical model to consider such conflict, taking into accou...

Citizenship tests are designed to ensure that new citizens have the knowledge required for successful 'integration'. This article explores what those who have taken the test thought about its content. It argues that new citizens had high levels of awareness of debates about immigration and anti-immigration sentiment. Considering new citizens' views of the test, the article shows how many of the...

Migration is an important event in the life history of many animals, but there is considerable variation within populations in the timing and final destination. Such differential migration at the population level can be strongly determined by individuals showing different consistencies in migratory traits. By tagging individual cyprinid fish with uniquely coded electronic tags, and recording th...

formation and expantion of informal settlements are concequences of urban growth and zanjan isn't an exception to this regulation. najaf abad informal settlement has been formed and expanded on the bases of uncontrolled and exceeding rural immigration. this study aims to investigate role of social security in empowerment as well as elimination district problems of zanjan najaf abad. in the empo...

The study uses a spatial gravity model with spatial dependence in the bilateral flows between origins and destinations. This is important for policy because it underscores the futility of parochial policy targeting in the presence of spatial spillover. Traditionally, it has been assumed that only developments in the origins and destinations affect the magnitude of migration between them. In the...