Sökning: "svårighet"

Visar resultat 11 - 15 av 50 avhandlingar innehållade ordet svårighet.

  1. 11. Treatment conditions for the removal of contaminants from road runoff

    Författare :Magnus Hallberg; Gunno Renman; Jiri Marsalek; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; dissolved matter; filter bed; particulate matter; sedimentation; suspended solids; Environmental engineering; Miljöteknik;

    Sammanfattning : The pollutant load in road runoff is related to traffic densities and road maintenance activities. Inurbanised areas treatment of road runoff is common and often considered necessary. The pollutantsare partitioned between the particulate and dissolved matter. However, the contaminantstend to have an affinity to the particulate material. LÄS MER

  3. 12. Formative assessment and problem solving in mathematics

    Författare :Sharmin Söderström; Johan Lithner; Torulf Palm; Carina Granberg; Guri Nortvedt; Umeå universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Formative assessment; problem solving; reasoning; computer-based assessment; feedback; types of motivation; self-efficacy; pedagogiskt arbete; educational work; matematikdidaktik; didactics of mathematics;

    Sammanfattning : In this thesis, the focus is on how reasoning in problem solving can be supported and which factors are associated with this support. In four studies, I investigated four aspects which address the overarching aim of the thesis. LÄS MER

  4. 13. Clustering in Swedish : The Impact of some Properties of the Swedish Language on Document Clustering and an Evaluation Method

    Författare :Magnus Rosell; Viggo Kann; Björn Levin; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Document Clustering; Language technology; Språkteknologi;

    Sammanfattning : Text clustering divides a set of texts into groups, so that texts within each group are similar in content. It may be used to uncover the structure and content of unknown text sets as well as to give new perspectives on known ones. LÄS MER

  5. 14. Barns teckningar som utgångspunkt i det naturvetenskapliga samtalet

    Författare :Johanna Andersson; Lena Tibell; Jesper Haglund; Christina Ottander; Linköpings universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; children; drawings; conceptions; heat; mixning; human body; living min-living; barn; teckningar; föreställningar; värme; blandning; människokroppen; levande inte levande;

    Sammanfattning : Barns föreställningar utgör en viktig del i deras begreppsbildning inom naturvetenskap vilket betonas inom konstruktivismen. I denna avhandling utgör en socialkonstruktivistisk syn på lärande det teoretiska ramverket. LÄS MER

  7. 15. Calculations of Clean and Adsorbate Covered Metal Surfaces and their Core-Level Photoemission Spectra

    Författare :Martin Birgersson; Matematisk fysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; chemical shifts; density functional theory; Condensed matter:electronic structure; electrical; magnetic and optical properties; supraconductors; magnetic resonance; relaxation; Atomic and molecular physics; spektroskopi; magnetisk resonans; supraledare; magnetiska och optiska ; egenskaper elektriska; spectroscopy; Kondenserade materiens egenskaper:elektronstruktur; core-level photoemission; single crystal surfaces; Atom- och molekylärfysik; Fysicumarkivet A:2002:Birgersson; core-hole degeneracies; metal surfaces; adsorption; molecular vibrations;

    Sammanfattning : The present thesis is concerned with the theoretical study of x-ray photoemission spectra from clean and adsorbate-covered metal surfaces. The main tool is ab initio density functional (DFT) total energy calculations. LÄS MER