نتایج جستجو برای: immigration
تعداد نتایج: 10726 فیلتر نتایج به سال:
The importation of foreign registered nurses has been used as a strategy to ease nursing shortages in the United States. The effectiveness of this policy depends critically on the long-run response of native nurses. We examine the effects of immigration of foreign-born registered nurses on the long-run employment and occupational choice of native nurses. Using a variety of empirical strategies ...
Repeat Tracking of Individual Songbirds Reveals Consistent Migration Timing but Flexibility in Route
Tracking repeat migratory journeys of individual animals is required to assess phenotypic plasticity of individual migration behaviour in space and time. We used light-level geolocators to track the long-distance journeys of migratory songbirds (wood thrush, Hylocichla mustelina), and, for the first time, repeat journeys of individuals. We compare between- and within-individual variation in mig...
Aims Nestedness is a characteristic of insular metacommunity structure. relatively few studies, however, have attempted to evaluate temporal changes in nestedness, or elucidate the mechanisms underlying nestedness. I evaluated both spatial and temporal patterns of nestedness in the insular floras of four archipelagoes of small islands in the bahamas and the potential underlying environmental gr...
BACKGROUND Annual movements of tri-colored bats (Perimyotis subflavus) are poorly understood. While this species has been considered a regional migrant, some evidence suggests that it may undertake annual latitudinal migrations, similar to other long distance North American migratory bat species. METHODOLOGY/PRINCIPAL FINDINGS We investigated migration in P. subflavus by conducting stable hyd...
The Impact of Immigration on the Employment of Natives in Regional Labour Markets: A Meta-Analysis Immigration is a phenomenon of growing significance in many countries. Increasing social tensions are leading to political pressure to limit a further influx of foreign-born persons on the grounds that the absorption capacity of host countries has been exceeded and social cohesion threatened. Ther...
The United States is experiencing a renewed period of immigration and immigrant policy activity as well as heightened enforcement of such policies. This intensified activity can affect various aspects of immigrant health, including mental health. We use the Robert Wood Johnson Foundation 2015 Latino National Health and Immigration Survey (n = 1,493) to examine the relationship between immigrati...
Dr. Borjas is the Robert W. Scrivner Professor of Economics and Social Policy at the John F. Kennedy School of Government, Harvard University. This Backgrounder is an expansion of Dr. Borjas’ article, “The Labor Demand Curve Is Downward Sloping: Reexamining the Impact of Immigration on the Labor Market,” published in the November 2003 issue of the Quarterly Journal of Economics (pp. 1335-1374)....
Sectoral labor supply shortage is a cause of concern in many OECD countries and has raised support for immigration as a potential remedy. In this paper, we derive a general equilibrium model with overlapping generations, where natives require a compensating wage differential for working in one sector rather than in another. We identify price and wage effects of immigration on three different gr...
The theory of factor demand has important implications for the study of the impact of immigration on wages in both sending and receiving countries. This paper examines the implications of the theory in the context of a general equilibrium model where the wage impact of immigration is influenced by such factors as the elasticity of product demand, the rate at which the consumer base expands as i...
Health inequalities, deprivation, immigration and aboriginality in Canada: a geographic perspective.
OBJECTIVE This study explores the contribution of deprivation, immigration and Aboriginal status to survival in various parts of Canada. It is hypothesized that differences in the magnitude of survival inequalities according to deprivation across Canada are attenuated when immigration and Aboriginal status are accounted for. METHODS The study is based on a file linking the 1991 census and a f...
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