Sökning: "Lennart Persson"
Visar resultat 11 - 15 av 28 avhandlingar innehållade orden Lennart Persson.
11. The development of resource polymorphism – Effects of diet, predation risk and population dynamical feedbacks
Sammanfattning : This thesis deals with the evolution of individuals within a species adapted to utilize specific resources, i.e. resource polymorphism. Although a well-known phenomenon, the understanding of the mechanisms behind is not complete. LÄS MER
12. Invasion of top and intermediate consumers in a size structured fish community
Sammanfattning : In this thesis I have investigated the effects of invading top and intermediate consumers in a size-structured fish community, using a combination of field studies, a lake invasion experiment and smaller scale pond and aquaria experiments. The lake invasion experiment was based on introductions of an intermediate consumer, ninespine stickleback (Pungitius pungitius L. LÄS MER
13. Security-centered Coordinated Control in AC/DC Transmission Systems
Sammanfattning : .... LÄS MER
14. Cancer Patients’ Satisfaction with Doctors’ Care : Consequences and Contributing Conditions
Sammanfattning : The main aims were to: explore whether there is a relation between doctors’ ability to identify patients’ worry and wish for information and self-efficacy with regard to communicating with patients about difficult matters; describe which cues doctors consider when estimating patients’ worry and wish for information, and investigate whether there is a relation between patients’ satisfaction with doctors’ care and patients’ psychosocial function. Eleven doctors and 69 patients (of which 36 patients participated in the longitudinal study) with carcinoid tumours participated. LÄS MER
15. Ontogenetic scaling and the development of within-cohort size structure
Sammanfattning : It is increasingly recognized that individuals of the same species differ from each other and influence and respond to their environment in unique ways. This thesis deals with size variation among individuals that not only are of the same species but also of similar age. LÄS MER