Sökning: "Peter Gustafsson"
Visar resultat 11 - 15 av 34 avhandlingar innehållade orden Peter Gustafsson.
11. Lithium formate EPR dosimetry for accurate measurements of absorbed dose in radiotherapy
Sammanfattning : Lithium formate has shown to be a material with properties suitable for electron paramagnetic resonance (EPR) dosimetry, among them up to 7 times higher sensitivity compared to alanine, which is a well-established EPR detector material for dose determinations in radiotherapy.The aim of this thesis was to further investigate the properties of lithium formate and develop the dosimetry system towards applications in radiotherapy. LÄS MER
12. Complexity and Power Reduction in Digital Delta-Sigma Modulators
Sammanfattning : A number of state-of-the-art low power consuming digital delta-sigma modulator (ΔΣ) architectures for digital-to-analog converters (DAC) are presented in this thesis. In an oversampling ΔΣ DAC, the primary job of the modulator is to reduce the word length of the digital control signal to the DAC and spectrally shape the resulting quantization noise. LÄS MER
13. Intelligent fault diagnosis and predictive maintenance for a bearing ring grinder
Sammanfattning : Predicting the failure of any structure is a difficult task in a mechanical system. However complicated and difficult the prediction might be, the first step is to know the actual condition of the system. LÄS MER
14. Laborativt arbete i fysikundervisningen : Något som behöver diskuteras!
Sammanfattning : BaksidestextI gymnasieskolans kursplaner för ämnet fysik framhålls det undersökande arbetssättet genom att betona att eleverna ska ges förutsättningar att utveckla förmågan att söka svar på frågor, planera, genomföra, tolka och redovisa experiment. Eleverna ska dessutom ges möjligheter att använda sina kunskaper i fysik för att kommunicera, argumentera och presentera slutsatser. LÄS MER
15. What about the parents? : Sleep quality, mood, saliva cortisol response and sense of coherence in parents with a child admitted to pediatric care
Sammanfattning : Parents experience many stressful situations when their child is ill and needs medical care, irrespective of the child’s age, diagnosis or the severity of the illness. Poor sleep quality and negative mood decrease the parents’ ability to sustain attention and focus, to care for their ill child, and to cope with the challenges they face. LÄS MER