Sökning: "Optimal migration"

Visar resultat 1 - 5 av 53 avhandlingar innehållade orden Optimal migration.

1. 1. 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. 2. The Maternal Migration Effect : Exploring Maternal Healthcare in Diaspora Using Qualitative Proxies for Medical Anthropology

   Författare :Pauline Binder; Birgitta Essén; Sara Johnsdotter; Helen Lambert; Uppsala universitet; []
   Nyckelord :caesarean section; care encounter; constructivist; interpreter use; migration; Somali; African immigrant; socio-cultural factors; International Health; Internationell hälsa;

   Sammanfattning : This project explores the 'maternal migration effect'. Following migration to a high-income country with a low maternal mortality rate, we assume that some immigrant women’s reliance upon maternal practices that respond to a low-income, high-mortality context can adversely affect care-seeking and utilization of treatment facilities. LÄS MER

4. 3. Evolutionary dynamics of migration and breeding in wild birds: genetic architecture, sexual conflicts and evolutionary constraints

   Författare :Maja Tarka; Biologiska institutionen; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; quantitative genetics; heritability; intralocus sexual conflict; antagonistic selection; QTL; G-matrix; wing length; arrival date; migration; geolocator; bird; Acrocephalus arundinaceus;

   Sammanfattning : Our knowledge of the evolutionary potential of traits involved in different selective episodes, especially in natural populations, is still limited. This is true for questions such as the genetic basis and inheritance of traits, how natural and sexual selection acts on them, and how selective conflicts influence the evolutionary response to selection. LÄS MER

5. 4. Diel vertical migration in marine dinoflagellates

   Författare :Therese Jephson; Enhet akvatisk ekologi; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Key words: diel vertical migration; DVM; dinoflagellates; stratification; halocline; thermocline; behavior diel vertical migration; behavior;

   Sammanfattning : Increasing precipitation and surface water temperature due to global change may strengthen stratification in coastal regions, which could influence the behavior of dinoflagellate diel vertical migration (DVM). DVM is a behavioral mechanism by which dinoflagellates can access photosynthetically active radiation near the surface, and nutrients at depth. LÄS MER

7. 5. Service Migration in Virtualized Data Centers

   Författare :Kyoomars Alizadeh Noghani; Andreas Kassler; Andreas Fischer; Karlstads universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Data Center; Ethernet VPN; EVPN; Live Service Migration; Reconfiguration; SDN; Virtual Network Function; VNF; Computer Science; Datavetenskap;

   Sammanfattning : Modern virtualized Data Centers (DCs) require efficient management techniques to guarantee high quality services while reducing their economical cost. The ability to live migrate virtual instances, e.g. LÄS MER