Sökning: "Developmental threshold"
Visar resultat 1 - 5 av 10 avhandlingar innehållade orden Developmental threshold.
Sammanfattning : Diapause decision is a classic example of a threshold switch mechanism with cascading effects on morphology, behaviour and life-history traits. This thesis addresses the downstream effects of the insect diapause switch, with the main focus on pathway-specific regulation of life-history traits, using the speckled wood butterfly (Pararge aegeria) as a study species. LÄS MER
2. On the threshold of adulthood : Recurrent phenomena and developmental tasks during the period of young adulthood
Sammanfattning : The aim of the dissertation is to investigate the own narratives told by young adults in the age group 18 to 25 years old about strains in life, ideas about the background to these, and attitudes now and in an imagined future. The emerging recurrent phenomena form the basis for a deeper understanding of the developmental tasks of young adults. LÄS MER
Sammanfattning : Phenotypic plasticity is the ability of a genotype to express different phenotypes in different environments. Despite its common occurrence, few have investigated differences in plasticity between populations, the selection pressures responsible for it, and costs and constraints associated with it. LÄS MER
Sammanfattning : An essential characteristic of human and animal life is the ability to move from one place to another, in order to survive in a complex environment. All the different forms of locomotion, like walking, swimming, crawling and flying, have one common feature: rhythmic and alternating movements of the body. LÄS MER
5. Bilingual education cognitive development and school achievement : a study of the bilingual programs for Tibetan children
Sammanfattning : This study examines the effects of two models of school bilingual programs on Tibetan children's cognitive development and school achievement.Based on the findings of empirical studies, Cummins' threshold theory was critically evaluated. LÄS MER