Search for dissertations about: "emigration and immigration"
Showing result 6 - 10 of 11 swedish dissertations containing the words emigration and immigration.
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6. Dispersal, inbreeding and fitness in natural populations
Abstract : To evaluate how inbreeding affects the viability of small populations, it is crucial to determine what constitutes a population (i.e., the number of breeders in local patches and the degree of dispersal), and also to estimate the reproductive consequences of philopatry and emigration. READ MORE
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7. Discovering the capabilities of ageing persons who are born abroad: crossing norms, moving health promotion forward
Abstract : To improve the possibilities for the whole population to take control over their health is an important goal for health promotion and public health. Yet, with improved possibilities for international migration and extended life spans, there are more and more people who are considered less capable to reach such a goal. READ MORE
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8. The importance of search behavior and movements for spatial distributions of herbivorous insects
Abstract : Insect populations commonly show large spatial variation in density, and much variation have been shown to be explained by the search behavior applied by the insect when locating habitat patches. This thesis explores the importance of odor-mediated attraction for immigration rates of herbivorous insects in relation to the size of the patches and the density of host plants within the patches. READ MORE
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9. Information, Networks and Trust in the Global Economy - Essays on International Trade and Migration
Abstract : This thesis investigates the role of migration in international trade within the framework of behind-the-border trade barriers and firm behavior. In addition to the introduction, which provides a context to the analysis, it consists of four essays. READ MORE
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10. Cancer and migration : epidemiological studies on relationship between country of birth, socio-economic position and cancer
Abstract : Background: Migrant studies offer a unique opportunity to analyze variation in disease occurrence due to background factors. The role of environmental and lifestyle exposures are of particular interest in cancer research, and migrant studies can be considered as "natural experiments" in epidemiological research. READ MORE