نتایج جستجو برای: ii immigration operator

تعداد نتایج: 681384  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه زنجان - دانشکده ادبیات و علوم انسانی 1392

اعتقاد کلی بر این است که تنوع شالوده و اساس ثبات و پایداری است و هر اندازه سیستمی متنوع تر گردد، پایداری و پویایی آن در طول زمان و در مکان های مختلف نه تنها در مقابل تنش های درونی، بلکه در مقابل تنش های بیرونی نیز حفظ می گردد. در همین راستا، امروزه تنوع بخشی به اقتصاد روستایی یکی از رویکردهایی است که در جهت تحقق توسعه پایدار روستایی مطرح شده است. در تحقیق حاضر به بررسی رابطه بین تنوع اقتصاد روس...

Journal: :Revista de salud publica 2009
Andrés A Agudelo-Suárez Diana Gil-González Carmen Vives-Cases Elena Ronda-Pérez

OBJECTIVE Describing and analysing the Spanish Parliamentary debate on immigration and health. METHODS A systematic search regarding parliamentary initiatives (PI) on immigration and immigration and health was conducted from the beginning of the Spanish democratic period (1979 to 2007). A protocol for collecting information was used to identify the parliamentary debate's main characteristics ...

2016
Jennifer E. Glick Scott T. Yabiku

BACKGROUND The growing prevalence of migrant children in diverse contexts requires a reconsideration of the intergenerational consequences of migration. To understand how migration and duration of residence are associated with children's schooling, we need more comparative work that can point to the similarities and differences in outcomes for children across contexts. OBJECTIVE This paper ad...

2011
Sarah M Salway Gina Higginbottom Birgit Reime Kuldip K Bharj Punita Chowbey Caroline Foster Jule Friedrich Kate Gerrish Zubia Mumtaz Beverley O'Brien

BACKGROUND Public health researchers are increasingly encouraged to establish international collaborations and to undertake cross-national comparative studies. To-date relatively few such studies have addressed migration, ethnicity and health, but their number is growing. While it is clear that divergent approaches to such comparative research are emerging, public health researchers have not so...

Journal: :Evolution; international journal of organic evolution 2014
David P L Toews Milica Mandic Jeffrey G Richards Darren E Irwin

Discordance between mitochondrial and nuclear DNA has been noted in many systems. Asymmetric introgression of mitochondria is a common cause of such discordances, although in most cases the drivers of introgression are unknown. In the yellow-rumped warbler, evidence suggests that mtDNA from the eastern, myrtle warbler, has introgressed across much of the range of the western form, the Audubon's...

2009
Graham C. Ousey Charis E. Kubrin

A popular perception is that immigration causes higher crime rates. Yet, historical and contemporary research finds that at the individual level, immigrants are not more inclined to commit crime than the native born. Knowledge of the macro-level relationship between immigration and crime, however, is characterized by important gaps. Most notably, despite the fact that immigration is a macro-lev...

2008
CHRISTIAN BREUNIG

Most scholarship on immigration politics is made up of isolated case studies or cross-disciplinary work that does not build on existing political science theory. This study attempts to remedy this shortcoming in three ways: (1) we derive theories from the growing body of immigration literature, to hypothesize about why political parties would be more or less open to immigration; (2) we link the...

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