Search for dissertations about: "Karl Pettersson"

Showing result 1 - 5 of 7 swedish dissertations containing the words Karl Pettersson.

  2. 1. Design Automation of Complex Hydromechanical Transmissions

    Author : Karl Pettersson; Petter Krus; Seppo Tikkanen; Linköpings universitet; []
    Keywords : ;

    Abstract : This thesis proposes an automated methodology for the design of complex multiple-mode hydromechanical transmissions. High fuel prices and strict emission regulations are today drivers of the development of new fuel-efficient drive transmissions for construction machinery. READ MORE

  4. 2. CFD Methods for Predicting Aircraft Scaling Effects

    Author : Karl Pettersson; Arthur Rizzi; Bryan Richards; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; CFD; Scaling Effects; Boundary Layer Transition; Preconditioning; Vehicle engineering; Farkostteknik;

    Abstract : This thesis deals with the problems of scaling aerodynamic data from wind tunnel to free flight  conditions. The main challenges when this scaling should be performed is how the model support, wall interference and the potentially lower Reynolds number in the windtunnel should be corrected. READ MORE

  5. 3. Scaling techniques using CFD and wind tunnel measurements for use in aircraft design

    Author : Karl Pettersson; Arthur Rizzi; Henrik Alfredsson; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; CFD; wind tunnel; scaling; Reynolds number effect; Vehicle engineering; Farkostteknik;

    Abstract : This thesis deals with the problems of scaling aerodynamic data from wind tunnel conditions to free flight. The main challenges when this scaling should be performed is how the model support, wall interference and the potentially lower Reynolds number in the wind tunnel should be corrected. READ MORE

  6. 4. The Logical Structure of the Moral Concepts : An Essay in Propositional Deontic Logic

    Author : Karl Pettersson; Erik Carlson; Kent Hurtig; Sven Ove Hansson; Uppsala universitet; []
    Keywords : HUMANIORA; HUMANITIES; deontic logic; standard deontic logic SDL ; deontic paradoxes; non-Kripkean modal logic; moral dilemmas; supererogation; Hector-Neri Castañeda; practitions; dyadic deontic logic; Practical philosophy; Praktisk filosofi; Praktisk filosofi; Practical Philosophy;

    Abstract : In this thesis, the main focus is on deontic logic as a tool for formal representation of moral reasoning in natural language. The simple standard system of deontic logic (SDL), i.e. READ MORE

  7. 5. Fragility fractures in fragile people : epidemiology of the age quake

    Author : Ulrica Bergström; Håkan Jonsson; Ulrika Pettersson; Hans Stenlund; Karl Obrant; Umeå universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Fragility; fractures; elderly; epidemiology; age quake; population based; Vitamin D.; Orthopaedics; Ortopedi; Orthopaedics; ortopedi;

    Abstract : Osteoporosis-related fracture is already today a major public health problem and the number of hip fractures is expected to double to 2030. Sweden has one of the highest hip fracture incidences worldwide. This may be explained by several factors: e.g. READ MORE