Sökning: "relative bias"

Visar resultat 11 - 15 av 122 avhandlingar innehållade orden relative bias.

1. 11. Interactions between natural enemies and the dioecious herb Silene dioica

   Författare :Viktoria Pettersson; Barbara E. Giles; Lars Ericson; Pia Mutikainen; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Silene dioica; Delia criniventris; Caryocolum viscariella; Microbotryum violaceum; plant-herbivore interactions; plant -pathogen interactions; sex bias; sex rato; successional gradients; fitness effects; Skeppsvik Archipelago; Terrestrial ecology; Terrestisk ekologi; ekologisk botanik; Ecological Botany;

   Sammanfattning : About 6% of all angiosperms are dioecious. This separation of sexual function to male and female individuals, and the fundamentally different patterns of reproductive resource allocation that follows that separation, are thought to have important ecological and evolutionary consequences for plant enemy interactions. LÄS MER

3. 12. Fishing for Females : Sensory Exploitation in the Swordtail Characin

   Författare :Mirjam Amcoff; Niclas Kolm; Michael Ryan; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Sexual selection; Mate choice; Courtship; Sensory bias; Plasticity; Corynopoma riisei; Mulitiple signalling; Biologi med inriktning mot zooekologi; Biology with specialization in Animal Ecology;

   Sammanfattning : Mate choice plays an important role in sexual selection and speciation. The evolution of mate choice is intriguing in cases where choosy individuals gain little except for genetic material from the mate and where the trait used as a criterion for the choice is costly to its bearer. LÄS MER

4. 13. Mental ill-health in Sweden. Causes and consequences from an inequality perspective

   Författare :Anna Linder; Centrum för ekonomisk demografi; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Mental health; Inequality in health; Determinants of health; Determinants of inequality in health; Education policy; School grades; Grade inflation; Grading bias; Human capital development;

   Sammanfattning : The purpose of this thesis is to improve the understanding of factors related to mental ill-health, and itsdistribution, in the Swedish population. The thesis consists of four studies. In study I, we find thatbetween the years 1994 and 2011, the probability of receiving a psychiatric inpatient diagnosisincreased by 12. LÄS MER

5. 14. Evolution of Mimicry and Aposematism Explained: Salient Traits and Predator Psychology

   Författare :Baharan Kazemi; Olof Leimar; Gabriella Gamberale-Stille; Mike Speed; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; imperfect mimicry; mimicry evolution; predator learning; discrimination; generalization; salience; overshadowing; aposematism; warning signal evolution; generalization bias; peak shift; etologi; Ethology;

   Sammanfattning : Aposematic species have evolved conspicuous warning signals, such as bright colors and striking patterns, to deter predators. Some edible and harmless species take advantage of this deterrent effect by mimicking their appearance. Mimicry is a great example of how natural selection produces remarkable adaptations. LÄS MER

7. 15. Essays on Savings Behavior, Inflation Measurement, and Growth

   Författare :Markus Peters; Per Krusell; Roine Vestman; Tobias Laun; Stockholms universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Savings; pension reform; inattention; present bias; output growth; inflation; measurement; PPI micro data; input-output; networks; intermediate inputs; structural change; Economics; nationalekonomi;

   Sammanfattning : The Impact of Pension Reform on Household Income and Savings: A Quantitative Analysis of the Swedish CaseIncreases in life expectancy cause challenges for defined benefit pension systems. Sweden is one of few countries having undertaken a major reform aimed at creating a financially sustainable pension system. LÄS MER