Search for dissertations about: "Daniel Åberg"

Found 3 swedish dissertations containing the words Daniel Åberg.

  2. 1. Transition Properties of f-electrons in Rare-earth Optical Materials

    Author : Daniel Åberg; Börje Johansson; Sverker Edvardsson; Lidia Smentek; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Physics; rare-earth ions; oscillator strengths; correlation; crystal field; f-electrons; Fysik; Physics; Fysik;

    Abstract : The main purpose of this thesis is to theoretically study energy levels and intra-electronic transition intensities for various f-electron systems. The f-f electronic dipole transitions are parity-forbidden for a free ion but become non-zero when the ion is subject to a crystal-field. READ MORE

  4. 2. Applied problems and computational methods in radiative transfer

    Author : Magnus Neuman; Per Edström; Daniel Åberg; Mittuniversitetet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : Light scattering in turbid media is essential for such diverse applications as paperand print, computer rendering, optical tomography, astrophysics and remote sensing.This thesis investigates angular variations of light reflected from plane-parallelturbid media using both mathematical models and reflectance measurements, dealswith several applications and proposes novel computational methods for solving thegoverning equations. READ MORE

  5. 3. The impact of family composition on adult earnings

    Author : Frida Skog; Rune Åberg; Daniel Larsson; Robert Erikson; Umeå universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Family composition; siblings; divorce; remarriage; adult earnings; propensity score matching; sociologi; Sociology;

    Abstract : This thesis addresses to what extent childhood family composition – the number of siblings and whether the parents live together, or whether there are non-parental adults and/or half-siblings in the household or not – contributes to variations in adult earnings. The theoretical perspective suggests that resources mediate the effect. READ MORE