Sökning: "Lars Hellström"

Visar resultat 1 - 5 av 17 avhandlingar innehållade orden Lars Hellström.

  1. 1. Respiratory drive assessment : an evaluation of the breath-by-breath occlusion pressure method in man

    Författare :Lars Gösta Hellström; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : A simplified concept of respiratory drive is to consider it as the integrated "output" from the CNS to the respiratory "pump" muscles. This drive is a result of a complex central respiratory pattern generation, and can in abnormal situations, e.g. of pathological or pharmacological origin, be altered. LÄS MER

  3. 2. The Diamond Lemma for Power Series Algebras

    Författare :Lars Hellström; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Mathematical analysis; diamond lemma; power series algebra; Gröbner basis; embedding into skew fields; archimedean element in semigroup; q-deformed Heisenberg--Weyl algebra; polynomial degree; ring norm; Birkhoff orthogonality; filtered structure; Matematisk analys; Mathematical analysis; Analys; Mathematics; matematik;

    Sammanfattning : The main result in this thesis is the generalisation of Bergman's diamond lemma for ring theory to power series rings. This generalisation makes it possible to treat problems in which there arise infinite descending chains. LÄS MER

  4. 3. Förpackningens förvandlingar : Konsumtion och karneval i barnboken

    Författare :Martin Hellström; Bengt Erik Eriksson; Lars-Håkan Svensson; Boel Westin; Maria Nikolajeva; Linköpings universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; Children s literature; consumption; package; carnival; Zygmunt Bauman; Mikhail Bakhtin; Roald Dahl; Herge; Tove Jansson; Astrid Lindgren; Barbro Lindgren; Christine Nöstlinger; Maurice Sendak; Barnlitteratur; konsumtion; förpackning; karneval; Zygmunt Bauman; Michail Bachtin; Roald Dahl; Herge; Tove Jansson; Astrid Lindgren; Barbro Lindgren; Christine Nöstlinger; Maurice Sendak; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; Comparative literature;

    Sammanfattning : Här studeras den massproducerade förpackningen som motiv inom ett flertal barnböcker, såsom Pippi Långstrump och Mio min Mio av Astrid Lindgren, Charlie and the Chocolate factory av Roald Dahl, In the Night Kitchen av Maurice Sendak, Korken flyger av Barbro Lindgren, samt ett flertal verk av Tove Jansson och Herge. I dessa verk ses förpackningen som den främsta symbolen för vårt konsumtionssamhälle. LÄS MER

  5. 4. Look-ahead Control of Heavy Trucks utilizing Road Topography

    Författare :Erik Hellström; Lars Nielsen; Torkel Glad; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; predictive control; dynamic programming; Automatic control; Reglerteknik;

    Sammanfattning : The power to mass ratio of a heavy truck causes even moderate slopes to have a significant influence on the motion. The velocity will inevitable vary within an interval that is primarily determined by the ratio and the road topography. LÄS MER

  7. 5. Look-ahead Control of Heavy Vehicles

    Författare :Erik Hellström; Lars Nielsen; Jan Åslund; Lino Guzzella; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; automotive control; dynamic programming; predictive control; fuel-optimal control; long haulage truck; TECHNOLOGY; TEKNIKVETENSKAP; Information technology; Informationsteknik; Automatic control; Reglerteknik;

    Sammanfattning : Trucks are responsible for the major part of inland freight and so, they are a backbone of the modern economy but they are also a large consumer of energy. In this context, a dominating vehicle is a truck with heavy load on a long trip. LÄS MER