Sökning: "Migration"

Visar resultat 21 - 25 av 2070 avhandlingar innehållade ordet Migration.

1. 21. Flight Behaviour of Passerines on Nocturnal Migration

   Författare :Cecilia Nilsson; Evolutionär ekologi; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Bird migration; Passerines; Flight Behaviour; Tracking radar; Optimal migration; Flight speed; Airspeed; Wind drift; Nocturnal migration; Coastline effects; Flight directions; Reverse migration;

   Sammanfattning : Many passerines migrate during the night and at high altitudes, making their migration difficult to observe. By using tracking radars we have been able to make exact observations of the flight behaviour of passerines on nocturnal migration, which has enabled us to test several hypotheses about adaptive values and constraints regarding migratory behaviour in different ecological contexts. LÄS MER

3. 22. "For a better life..." : a study on migration and health in Nicaragua

   Författare :Cecilia Gustafsson; Gunnar Malmberg; Aina Tollefsen; Mark Rosenberg; Umeå universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; migration; health; health care; migration-health nexus; Nicaragua; remittances; mobile livelihoods; translocal geographies; vulnerability; suffering; coping; undocumentedness; mixed-methods; HDSS; Social and Economic Geography; kulturgeografi;

   Sammanfattning : This thesis explores and analyses the manifold relations between migration and health, what I call the migration-health nexus, in the contemporary Nicaraguan context. The study is based on fieldwork in León and Cuatro Santos and a mixed-methods approach combining qualitative in-depth interviews and quantitative survey data. LÄS MER

4. 23. Economics of Migration

   Författare :Peter Karpestam; Nationalekonomiska institutionen; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Time; Simulations; Remittances; Panel Data; Multiplier Effects; Migration; The Labor Market; Education; Informal and Formal Sectors;

   Sammanfattning : Abstract Population movements are more substantial today than at any other point in human history. If managed effectively, migration can be beneficial for all aspects of social and economic life. This thesis contains four papers, all of which are related to the economic consequences and determinants of migration, within and across countries. LÄS MER

5. 24. Migration in Prehistory : DNA and stable isotope analyses of Swedish skeletal material

   Författare :Anna Linderholm; Kerstin Lidén; Oliver Craig; Stockholms universitet; []
   Nyckelord :HUMANIORA; HUMANITIES; Migration; ancient DNA; stable isotopes; δ13C; δ15N; δ34S; mtDNA; lactose tolerance; Neolithic; Pitted Ware culture; Funnel Beaker culture; Vikings; Öland; Rössberga; Birka; Björned; Archaeology; Arkeologi; Archaeological Science; laborativ arkeologi;

   Sammanfattning : The main aim of this thesis is to show how scientific methods may be used to look at migration in prehistory on the basis of archaeological material. The individuals examined represent the period 4 000 BC to 1 000 AD and have their geographical origins in various parts of Sweden.Ancient DNA analysis is employed in three cases. LÄS MER

7. 25. Desirable Victims: Systems of Refugee Selection in Swedish and Canadian Migration Governing

   Författare :Andreas Lundstedt; Göteborgs universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; state capacity; migration; refugees; classification; categorization; historical institutionalism; judicialization; administrative courts; target populations; people processing;

   Sammanfattning : This thesis explores how states try to govern refugee migration by classifying and ordering its subjects. It argues that a unifying construct of state migration control is selection: to maintain a system that offers protection to wanted people and keeps out unwanted people. LÄS MER