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Visar resultat 1 - 5 av 7 avhandlingar som matchar ovanstående sökkriterier.

1. 1. VLSI aspects on inversion in finite fields

   Författare :Mikael Olofsson; Christof Paar; Linköpings universitet; []
   Nyckelord :VLSI; Inversion; Finite Fields; Area; Delay; Power dissipation; Irreducible polynomials; Polynomial basis; Triangular basis; Normal basis; Dual basis; Tower fields.; TECHNOLOGY; TEKNIKVETENSKAP;

   Sammanfattning : Different algorithms and architectures for inversion in finite extension fields are studied. The investigation is restricted to fields of characteristic two. Based on a simple transistor model, various architectures are compared with respect to delay, area requirement, and energy consumption. LÄS MER

3. 2. Scenarios we live by : Theorizing anticipatory practices for societal security

   Författare :Mikael Linnell; Anna Olofsson; Susanna Öhman; Sissel Haugdal Jore; Mittuniversitetet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES;

   Sammanfattning : This thesis explores and theorizes practices for generating knowledge and experience of possible futures in the present. Often, our unreflected everyday actions are clearly focused on the future. LÄS MER

4. 3. Helicobacter pylori outer membrane vesicles and the host-pathogen interaction

   Författare :Annelie Olofsson; Anna Arnqvist; Mikael Rhen; Umeå universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; H. pylori; outer membrane vesicles; 2D 31P; 1H COSY NMR; phospholipids; OMV proteome; adherence; endocytosis; CagA; OMV-host cell responses; yttermembran vesiklar;

   Sammanfattning : .... LÄS MER

5. 4. Developing and evaluating dose calculation models for verification of advanced radiotherapy

   Författare :Jörgen Olofsson; Mikael Karlsson; Anders Ahnesjö; Crister Ceberg; Umeå universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Radiation therapy; high-energy photons; dose calculation; multi-source model; pencil kernel; uncertainties; action levels; Radiological physics; Radiofysik;

   Sammanfattning : A prerequisite for modern radiotherapy is the ability to accurately determine the absorbed dose (D) that is given to the patient. The subject of this thesis has been to develop and evaluate efficient dose calculation models for high-energy photon beams delivered by linear accelerators. LÄS MER

7. 5. Energy and intensity modulated radiation therapy with electrons

   Författare :Lennart Olofsson; Mikael Karlsson; Magnus Karlsson; Björn Zackrisson; Erik Traneus; Umeå universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Radiation sciences; Radiation therapy; Conformal therapy; IMRT; Electrons; Electron treatment head; Electron MLC; Bremsstrahlung reduction; Integral dose; Penumbra; Output factor; Strålningsvetenskap; Radiation biology; Strålningsbiologi; radiofysik; radiation physics;

   Sammanfattning : In recent years intensity modulated radiation therapy with photons (xIMRT) has gained attention due to its ability to reduce the dose in the tissues close to the tumour volume. However, this technique also results in a large low dose volume. LÄS MER