Sökning: "Erik Holmberg"

Visar resultat 1 - 5 av 13 avhandlingar innehållade orden Erik Holmberg.

1. 1. Stress and fatigue constrained topology optimization

   Författare :Erik Holmberg; Anders Klarbring; Bo Torstenfelt; Daniel Hilding; Linköpings universitet; []
   Nyckelord :;

   Sammanfattning : This thesis concerns structural optimization in conceptual design stages, for which constraints that are adapted to industrial requirements have been developed for topology optimization problems. The objective of the project has been to identify and solve problems that today prevent structural optimization from being used in a broader sense in the avionic industry; the main focus has been on stress and fatigue constraints in topology optimization. LÄS MER

3. 2. Methodological aspects on excess cancer riskafter exposure to ionizing radiation

   Författare :Erik Holmberg; Göteborgs universitet; []
   Nyckelord :ionizing radiation; skin haemangioma; breast cancer; parathyroid adenoma; excess cancer risk; bias; confounding; risk models; pooled analysis.;

   Sammanfattning : Aims. The aims of this study were to establish a cohort of persons treated with radiotherapy for skin haemangioma in childhood and study the excess risk of cancer after exposure to ionizing radiation. LÄS MER

4. 3. Topology optimization considering stress, fatigue and load uncertainties

   Författare :Erik Holmberg; Anders Klarbring; Bo Torstenfelt; Pierre Duysinx; Linköpings universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Sammanfattning : This dissertation concerns structural topology optimization in conceptual design stages. The objective of the project has been to identify and solve problems that prevent structural topology optimization from being used in a broader sense in the avionic industry; therefore the main focus has been on stress and fatigue constraints and robustness with respect to load uncertainties. LÄS MER

5. 4. On the structure and dynamics of Saturn's inner plasma disk

   Författare :Mika Holmberg; Jan-Erik Wahlund; Jean-Pierre Lebreton; Uppsala universitet; []
   Nyckelord :Saturn; E-ring; plasma disk; Space and Plasma Physics; Rymd- och plasmafysik;

   Sammanfattning : This licentiate thesis presents our investigation of Saturn's inner plasma disk. The thesis gives an overview of the Cassini-Huygens project, what a plasma is and how we use the Langmuir probe to investigate it, various difficulties related to the measurements, the structure of the magnetosphere of Saturn, with special focus on the inner magnetosphere and the region around the Saturnian moon Enceladus. LÄS MER

7. 5. PHYSIOLOGICAL AND BIOMECHANICAL FACTORS DETERMINING CROSS-COUNTRY SKIING PERFORMANCE

   Författare :Erik Andersson; Hans-Christer Holmberg; Glenn Björklund; Thomas Stöggl; Jos J. de Koning; Mittuniversitetet; []
   Nyckelord :cycle characteristics; energy cost; energy yield; incline; joint angles; kinematics; kinetics; mechanics; Nordic skiing; oxygen deficit; oxygen demand; technique transitions; total metabolic rate.;

   Sammanfattning : Cross-country (c.c.) skiing is a complex sport discipline from both physiological and biomechanical perspectives, with varying course topographies that require different proportions of the involved sub-techniques to be utilised. A relatively new event in c. LÄS MER