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Visar resultat 1 - 5 av 64 avhandlingar som matchar ovanstående sökkriterier.
1. Evaluation of attenuation and scatter corrections in lung and brain SPECT
Sammanfattning : Single Photon Emission Computed Tomography (SPECT) is used to image functional processes in the human body. The image process is affected by physical effects such as attenuation, scatter, spatial resolution and statistical noise. LÄS MER
2. Efficient Exploration and Robustness in Controlled Dynamical Systems
Sammanfattning : In this thesis, we explore two distinct topics. The first part of the thesis delves into efficient exploration in multi-task bandit models and model-free exploration in large Markov decision processes (MDPs). LÄS MER
3. Quantification and Maximization of Performance Measures for Photon Counting Spectral Computed Tomography
Sammanfattning : During my time as a PhD student at the Physics of Medical Imaging group at KTH, I have taken part in the work of developing a photon counting spectrally resolved silicon detector for clinical computed tomography. This work has largely motivated the direction of my research, and is the main reason for my focus on certain issues. LÄS MER
4. Diagnosability performance analysis of models and fault detectors
Sammanfattning : Model-based diagnosis compares observations from a system with predictions using a mathematical model to detect and isolate faulty components. Analyzing which faults that can be detected and isolated given the model gives useful information when designing a diagnosis system. LÄS MER
5. Diagnosability analysis and FDI system design for uncertain systems
Sammanfattning : Our society depends on advanced and complex technical systems and machines, for example, cars for transportation, industrial robots in production lines, satellites for communication, and power plants for energy production. Consequences of a fault in such a system can be severe and result in human casualties, environmentally harmful emissions, high repair costs, or economical losses caused by unexpected stops in production lines. LÄS MER