Sökning: "Preference effects"

Visar resultat 31 - 35 av 200 avhandlingar innehållade orden Preference effects.

  1. 31. Effects of Environmental Factors on maternal Choice and Gene Dispersal in Plants

    Författare :Teklehaimanot Haileselassie; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; siring ability; Maternal effect; genetically modified crops; risk assessment; morphological markers; herbivory; Cucumis sativus; Växtekologi; pollen tube growth rate; Plant ecology; Nicotiana alata;

    Sammanfattning : Gene dispersal through pollen is affected by both abiotic and biotic environmental factors. In this study, I mainly investigated the effect of environmental factors: nutrient availability, simulated herbivory and floral morphology (flower colour), on the siring success of competing pollen donors and fitness of the resulting offspring. LÄS MER

  3. 32. Economic evaluation, value of life, stated preference methodology and determinants of risks

    Författare :Björn Sund; Lars Hultkrantz; Ulf Persson; Örebro universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Cost-benefit analysis; value of a statistical life; contingent valuation; cardiac arrest; defibrillation; calibration; sensitivity to scope; risk communication; response times; incident experience; risk perception.; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; Economics; Nationalekonomi; Economics; Nationalekonomi;

    Sammanfattning : The first paper examines the value of a statistical life (VSL) for out-of-hospital cardiac arrest (OHCA) victims. We found VSL values to be higher for OHCA victims than for people who die in road traffic accidents and a lower-bound estimate of VSL for OHCA would be in the range of 20 to 30 million Swedish crowns (SEK). LÄS MER

  4. 33. Neurobiological effects of early life cannabis exposure in relation to the gateway hypothesis

    Författare :Maria Ellgren; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : The use of Cannabis sativa preparations, such as hashish and marijuana, is wide-spread among young people, including pregnant women. Despite this concern, the consequences of cannabis exposure on the brain during periods of active brain development, such as the prenatal phase and adolescence, is not well known. LÄS MER

  5. 34. Long and short term effects of stump harvesting on saproxylic beetles and ground flora

    Författare :Jon Andersson; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Sammanfattning : Research on the effects from forest management on biodiversity has been going on for decades but still there are many questions unanswered. With every introduction of a new forestry method there is risk for increased pressure on biodiversity. The harvesting of low stumps left after final harvesting is a relatively new method used in forestry. LÄS MER

  7. 35. Palatal plate therapy in children with Down syndrome : a longitudinal study of effects on oral motor function

    Författare :Kerstin Carlstedt; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Articulation; children; communication preference; craniofacial growth; Down syndrome; dental maturity; functional appliances; growth hormone; muscle tone; oral dysfunction; tonsils; video registration;

    Sammanfattning : The aim of this thesis was to investigate the effect of palatal plate therapy on the oral motor function children with Down syndrome (DS) during 4 years by comparing the baseline values of the treatment group with those of a control group (CG). The effects of palatal plate therapy on speech production errors and communicative preference after 4 years of treatment were also studied and articulation was analyzed. LÄS MER