Sökning: "Tomas Jonsson"
Visar resultat 1 - 5 av 10 avhandlingar innehållade orden Tomas Jonsson.
1. Characterization of the BOLD signal in functional MRI
Sammanfattning : In the last two decades, functional magnetic resonance imaging (fMRI) has become an important and widely used imaging technique for functional brain mapping. However, blood oxygen level dependent (BOLD) technique is quite insensitive and task invoked BOLD signal change at 3T is typically in the order of a few percent. LÄS MER
2. Collective behavior of disordered magnetic systems
Sammanfattning : Magnetic properties of disordered and frustrated magnets have been experimentally investigated. The magnetic systems in focus in this work are spin-glasses and frozen ferrofluids (suspensions of nano-sized magnetic particles). LÄS MER
3. Food webs and the distribution of body sizes
Sammanfattning : Many ecologically relevant life-history traits of organisms, (such as generation time and ingestion rate) are significantly correlated to body size. Since these individual and species characteristics can affect the interactions between the species in a community, it is possible that the distribution of body sizes (in communities) can affect different properties of foodwebs as well. LÄS MER
4. Two Problems in non-linear PDE’s with Phase Transitions
Sammanfattning : This thesis is in the field of non-linear partial differential equations (PDE), focusing on problems which show some type of phase-transition. A single phase Hele-Shaw flow models a Newtoninan fluid which is being injected in the space between two narrowly separated parallel planes. LÄS MER
5. Mellan tradition och förnyelse : Utmaningar i religionsläraruppdraget
Sammanfattning : The current assignment of religious studies teachers is grounded on a confession-free foundation, expressed through the values of Swedish society. However, the subject still carries traces of a confessional tradition. Up until recently, Christianity played a major role in both teaching and teacher assignments. LÄS MER