Sökning: "Adaptive responses"

Visar resultat 16 - 20 av 338 avhandlingar innehållade orden Adaptive responses.

  1. 16. Vasopressin, monoamines and exploratory behaviour : a study in behavioural pharmacology with particular reference to adaptive responses

    Författare :Urban Höglund; Uppsala universitet; []
    Nyckelord :MEDICINE; MEDICIN;

    Sammanfattning : .... LÄS MER

  3. 17. Daphnids adaptive strategies to UV radiation

    Författare :Carla Eloisa Fernández; Avdelningen för Teknisk vattenresurslära; []
    Nyckelord :Cladocera; Zooplankton; Andean lakes; Daphnia; Ultraviolet radiation; Migration strategy; Photo-protection;

    Sammanfattning : This thesis focuses on the adaptive strategies of daphnids that allows them to maintain stable populations while deal with UV radiation, highlighting the differences in the responses that populations with different evolutionary histories may have.Although exposition to lethal doses in nature is unlikely, sub-lethal UV-B radiation doses may have strong impacts on zooplankton. LÄS MER

  4. 18. Uncertain Futures : Adaptive capacities to climate variability and change in the Lake Victoria Basin

    Författare :Sara Gabrielsson; LUCSUS; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; adaptive capacities; climate vulnerability; collective action; Lake Victoria Basin; smallholder farmers; sustainable adaptation; sustainability science.;

    Sammanfattning : The Lake Victoria basin (LVB) in East Africa can be considered a climate change hotspot because of its large rural population dependent on rain-fed farming. Drawing on extensive fieldwork (2007-2011) in rural communities along the shores of Lake Victoria in Kenya and Tanzania, I explore adaptive capacities to climate variability and change and discuss how they interrelate in situ. LÄS MER

  5. 19. Adaptive immune responses to tick-borne encephalitis virus and SARS-CoV-2

    Författare :Renata Varnaitė; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Tick-borne encephalitis virus (TBEV) and SARS-CoV-2 are two unrelated viruses that currently cause substantially different public health burdens and distinct pathologies in humans. TBEV infection leads to neurological symptoms of varying severity, while SARS-CoV-2 primarily targets the respiratory tract. LÄS MER

  7. 20. Reinforcement Learning Using Local Adaptive Models

    Författare :Magnus Borga; Linköpings universitet; []
    Nyckelord :TECHNOLOGY; TEKNIKVETENSKAP;

    Sammanfattning : In this thesis, the theory of reinforcement learning is described and its relation to learning in biological systems is discussed. Some basic issues in reinforcement learning, the credit assignment problem and perceptual aliasing, are considered. The methods of temporal difference are described. LÄS MER