Sökning: "datainsamlingsmetoder"

Visar resultat 1 - 5 av 24 avhandlingar innehållade ordet datainsamlingsmetoder.

  1. 1. The PET sampling puzzle : intelligent data sampling methods for positron emission tomography

    Författare :Klara Leffler; Jun Yu; Ida Häggström; Zhiyong Zhou; Saikat Chatterjee; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; sparse signal processing; compressed sensing; Poisson denoising; positron emission tomography PET ; sinogram denoising; sinogram inpainting; deep learning; matematisk statistik; Mathematical Statistics;

    Sammanfattning : Much like a backwards computed Sudoku puzzle, starting from the completed number grid and working ones way down to a partially completed grid without damaging the route back to the full unique solution, this thesis tackles the challenges behind setting up a number puzzle in the context of biomedical imaging. By leveraging sparse signal processing theory, we study the means of practical undersampling of positron emission tomography (PET) measurements, an imaging modality in nuclear medicine that visualises functional processes within the body using radioactive tracers. LÄS MER

  3. 2. Social önskvärdhet som felkälla i frågeundersökningar : en jämförelse mellan två datainsamlingsmetoder

    Författare :Nils-Magnus Björkman; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Metodlära;

    Sammanfattning : .... LÄS MER

  4. 3. Public e-Service Stakeholders : A study on who matters for public e-service development and implementation

    Författare :Ida Lindgren; Karin Axelsson; Göran Goldkuhl; Leif Flak; Linköpings universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Public e-service; stakeholders; e-government; user involvement; Offentliga e-tjänster; intressenter; e-förvaltning; användarmedverkan;

    Sammanfattning : Public e-services are progressively used as a means for governmental agencies to interact and exchange information with citizens and businesses. These services are typically Internet-based and are meant to fulfill the three overarching objectives of egovernment; (1) to improve citizens’ interactions with the government, (2) to make governmental organizations more efficient and effective, and (3) to increase the transparency of government and lead to a more democratic society. LÄS MER

  5. 4. Participating in Synchronous Online Education

    Författare :Stefan Hrastinski; Institutionen för informatik; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Technological sciences; Samhällsvetenskaper; Social sciences; systemteori; Computer-mediated communication; Online participation; Synchronous communication; Online education; Teknik; E-learning; Distance education; Informatics; Informatik; systems theory;

    Sammanfattning : There is an increasing need for education since the workforce of today is expected to be highly educated and continuously learn. Distance education is a powerful response to meet the growing need for education. Online education, here concisely defined as distance education mediated online, is the most common type of distance education. LÄS MER

  7. 5. "I min familj är vi omusikaliska" : en studie av barns musikaliska identitet

    Författare :Joakim Hellgren; Eva Georgii-Hemming; Luleå tekniska universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Musikpedagogik; Music Education;

    Sammanfattning : Denna studie genomfördes som ett musikprojekt på en mindre skola där alla barn i årskurserna fyra till sex deltog. Barnen fick under sju veckor lära sig grunderna i de vanligast förekommande instrumenten i rockgruppsspel. LÄS MER