Sökning: "bakåt"

Visar resultat 1 - 5 av 25 avhandlingar innehållade ordet bakåt.

  1. 1. Distal movement of maxillary molars. Studies of efficiency and timing of treatment

    Författare :Ingela Karlsson; Malmö högskola; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Orthodontics; Distal molar movement;

    Sammanfattning : Den vanligaste bettavvikelsen som behandlas bland barn och ungdomar är trångställning. När funktionellt och estetiskt störande trångställning i överkäken ska behandlas kan man vanligtvis ta bort tänder eller flytta de första stora kindtänderna (sexårständerna) bakåt för att sedan göra tandraden jämn. LÄS MER

  3. 2. Inverse Problems for Tumour Growth Models and Neural ODEs

    Författare :Rym Jaroudi; George Baravdish; Tomas Johansson; Jonas Unger; Gabriel Eilertsen; Lukáš Malý; Torbjörn Lundh; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : This thesis concerns the application of methods and techniques from the theory of inverse problems and differential equations to study models arising in the areas of mathematical oncology and deep learning. The first problem studied is to develop methods to perform numerical simulations with full 3-dimensional brain imaging data of reaction-diffusion models for tumour growth forwards as well as backwards in time with the goal of enabling the numerical reconstruction of the source of the tumour given an image (or similar data) at a later stage in time of the tumour. LÄS MER

  4. 3. Asymmetries : Conceptualizing Environmental Inequalities as Ecological Debt and Ecologically Unequal Exchange

    Författare :Rikard Warlenius; Humanekologi; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Environmental justice; Ecological debt; Ecologically unequal exchange; Environmental history; Ecological Marxism; Ecological economics; World system analysis;

    Sammanfattning : In this compilation thesis, consisting of six papers and an introductory chapter, the concepts of ecological debt, climate debt, ecologically unequal exchange, and unequal carbon sink appropriation are at the centre. Their intellectual and political histories are traced to environmental justice movements, ecological economics and neo-Marxist economics. LÄS MER

  5. 4. Power Scaling of Highly Compact Single-Frequency Yb-Doped Fiber Amplifiers

    Författare :Enkeleda Balliu; Hans-Erik Nilsson; Magnus Engholm; Pavel Peterka; Mittuniversitetet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; single-frequency; fiber amplifier; Yb-doped fibers; stimulated Brillouin scattering; compact lasers; thermal load; SHG; MOPA;

    Sammanfattning : Both scientific interests and industrial applications have stimulated the advance of single-frequency laser technology. The high spatial and temporal coherence of this technology has facilitated many applications such as gravitational wave detection, high-precision fiber sensors, high-resolution spectroscopy, holography, and nonlinear optical conversion. LÄS MER

  7. 5. Backward and Forward Nonlinear Optical Processes in Potassium Titanyl Phosphate

    Författare :Kjell Martin Mølster; Fredrik Laurell; Valdas Pasiskevicius; Ulf L. Österberg; Stefano Taccheo; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; QPM; PPKTP; Nonlinear Optics; Backward second-harmonic; BWOPO; OPO; parametric devices; QPM; Ickelinär Optik; BWOPO; OPO; PPKTP; QPM; kvasifasematching; ikkelinæer optikk; bakovervendt parametrisk oscillator; optisk parametrisk oscillator; PPKTP; Optics and Photonics; Optik och fotonik; Physics; Fysik;

    Sammanfattning : Second-order nonlinear optical processes generate radiation across a broad spectrum, including UV and the far-infrared. In this thesis, new light sources in the near(NIR) and mid infrared (MIR) using three-wave mixing geometries in periodically poled potassium titanyl phosphate (PPKTP) is studied. LÄS MER