Search for dissertations about: "migration problem"

Showing result 1 - 5 of 126 swedish dissertations containing the words migration problem.

2. 1. Flight Behaviour of Passerines on Nocturnal Migration

   Author : Cecilia Nilsson; Evolutionär ekologi; []
   Keywords : 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;

   Abstract : 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. READ MORE

4. 2. Economics of Migration

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

   Abstract : 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. READ MORE

5. 3. The Problem of Partial Migration - the Case of the Blue Tit

   Author : Anna Nilsson; Biologiska institutionen; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Naturvetenskap; Natural science; Djurekologi; Animal ecology; Ekologi; Ecology; weather; personality; partial migration; metabolic rate; evolution of migration; dominance; Cyanistes caeruleus; climate change; blue tit; behavioural strategies; bird migration;

   Abstract : In the evolution of bird migration, partial migration is assumed to be an important intermediate step between migration and residency. Partial migration is characterised by the existence of both migratory and resident individuals in a given population. READ MORE

6. 4. Live VM Migration : Principles and Performance

   Author : Petter Svärd; Erik Elmroth; Eric Jul; Umeå universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Live Migration; Virtualization; business data processing; administrativ databehandling;

   Abstract : Virtualization is a key technology for cloud computing as it allows several operating system instances to run on the same machine, enhances resource manageability and enables flexible definition of billing units. Virtualization works by adding a software layer, a hypervisor, on top of the hardware platform. READ MORE

7. 5. Migration and Perceptions of War : Simultaneous Surveys in Countries of Origin and Settlement

   Author : Jonathan Hall; Ashok Swain; Cochrane Feargal; Uppsala universitet; []
   Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; civil war; migration; refugees; gastarbeiter; family reunification; exile; trauma; coping; nostalgia; conservation of resources; terror management theory; social identity complexity; assimilation; acculturation; surveys; Peace and Conflict Research; Freds- och konfliktforskning;

   Abstract : This dissertation contributes to post-war public opinion research by examining the perceptions of migrants – the gastarbeiter, the refugee, the family reunited after war – and the local population in comparative perspective. Existing surveys of post-war populations are typically conducted in a single country affected by war. READ MORE