Sökning: "Functional Principal Component Analysis"
Visar resultat 1 - 5 av 17 avhandlingar innehållade orden Functional Principal Component Analysis.
1. Unraveling the thermohaline structure of the Southern Ocean using functional data analysis
Sammanfattning : The Southern Ocean connects the Indian, Pacific and Atlantic Oceans and provides a direct pathway to exchange mass, heat and salt across the Global Ocean, therefore playing an important role in the global climate system. Due to the complexity of its structure and the general inadequacy of its sampling, both in time and space, it remains a challenge to describe and visualize the three dimensional pattern of its circulation and the associated tracer distribution (temperature, salinity, oxygen or nutrients). LÄS MER
2. Adaptive analysis of functional MRI data
Sammanfattning : Functional Magnetic Resonance Imaging (fMRI) is a recently developed neuroimaging technique with capacity to map neural activity with high spatial precision. To locate active brain areas, the method utilizes local blood oxygenation changes which are reflected as small intensity changes in a special type of MR images. LÄS MER
3. Novel Approaches for Application of Principal Component Analysis on Dynamic PET Images for Improvement of Image Quality and Clinical Diagnosis
Sammanfattning : Positron Emission Tomography, PET, can be used for dynamic studies in humans. In such studies a selected part of the body, often the whole brain, is imaged repeatedly after administration of a radiolabelled tracer. LÄS MER
4. Directed Evolution of Glutathione Transferases Guided by Multivariate Data Analysis
Sammanfattning : Evolution of enzymes with novel functional properties has gained much attention in recent years. Naturally evolved enzymes are adapted to work in living cells under physiological conditions, circumstances that are not always available for industrial processes calling for novel and better catalysts. LÄS MER
5. Site variability and settlement patterns : an analysis of the hunter-gatherer settlement system in the Lule River Valley, 1500 B.C.-B.C./A.D
Sammanfattning : This thesis deals with questions concerning prehistoric hunter-gatherer society on the River Luleälv in Northern Sweden from c. 1500 B.C. to B. LÄS MER