Search for dissertations about: "Jan Pettersson"

Showing result 1 - 5 of 24 swedish dissertations containing the words Jan Pettersson.

  1. 1. Finite Element Analysis of Case-Hardened Roller Bearings

    Author : Jan Pettersson; Roland Fortunier; Linköpings universitet; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : This thesis deals with the material modelling of case-hardened bearing steel, with special reference to hardened roller bearing components. The result of a case-hardening process is a hardened component with substantially improved material properties within a restricted region beneath the heat-treated surface. READ MORE

  2. 2. Three Empirical Studies on Development : Democracy, the Resource Curse and Aid

    Author : Jan Pettersson; Fabrizio Zilibotti; Ragnar Torvik; Stockholms universitet; []
    Keywords : SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Democracy; Economic Growth; Consolidation; Political Systems; Natural Resources; Appropriability; Property Rights; Institutions; Development; Foreign Aid; Fungibility; Poverty; Public Expenditure; Economics; Nationalekonomi;

    Abstract : This thesis presents three self-contained essays focusing on empirical questions in growth and development economics. Each article addresses specific questions on why countries perform differently. READ MORE

  3. 3. New concepts and techniques for quantification and trace analysis by gas chromatography

    Author : Johan Pettersson; Johan Roerrade; Jan Åke Jönsson; KTH; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; Chemistry; quantitative accuracy; calibration; extenal standards; valume contraction; molar excess volume; Kemi; Chemistry; Kemi;

    Abstract : In the first part of this thesis, strategies for avoiding systematic errors when quantifying the main components in mixtures of solvents has been developed (paper I). It is shown that variations in density caused by variations in sample composition and/or volume contraction need to be taken into account. In this way, quantification can be improved. READ MORE

  4. 4. Full Scale tests and Structural Evaluation of Soil Steel Flexible Culverts with low Height of Cover

    Author : Lars G. Pettersson; Håkan Sundquist; Jan Vaslestad; KTH; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Building engineering; Byggnadsteknik;

    Abstract : .... READ MORE

  5. 5. Uncertainty Quantification and Numerical Methods for Conservation Laws

    Author : Per Pettersson; Jan Nordström; Gianluca Iaccarino; Gunilla Kreiss; Rémi Abgrall; Uppsala universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; uncertainty quantification; polynomial chaos; stochastic Galerkin methods; conservation laws; hyperbolic problems; finite difference methods; finite volume methods; Beräkningsvetenskap med inriktning mot numerisk analys; Scientific Computing with specialization in Numerical Analysis;

    Abstract : Conservation laws with uncertain initial and boundary conditions are approximated using a generalized polynomial chaos expansion approach where the solution is represented as a generalized Fourier series of stochastic basis functions, e.g. orthogonal polynomials or wavelets. READ MORE