Sökning: "Factor analysis"

Visar resultat 1 - 5 av 2425 avhandlingar innehållade orden Factor analysis.

  1. 1. The Diamond Lemma for Power Series Algebras

    Detta är en avhandling från Umeå : Umeå universitet

    Författare :Lars Hellström; [2002]
    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; MATHEMATICS Algebra; geometry and mathematical analysis Mathematical analysis; MATEMATIK Algebra; geometri och analys 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

  2. 2. Block stability analysis using deterministic and probabilistic methods

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Mehdi Bagheri; Håkan Stille; Charlie C. Li; [2011]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Block stability analysis; Model uncertainty; Joint relaxation; Partial factor; Sensitivity analysis;

    Sammanfattning : This thesis presents a discussion of design tools for analysing block stability around a tunnel. First, it was determined that joint length and field stress have a significant influence on estimating block stability. LÄS MER

  3. 3. Benthic diatoms in the Gulf of Bothnia Community analysis and diversity

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Svenja Busse; Michael Sullivan; [2002]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Ecology; Baltic Sea; Biodiversity; Biomass; Community ecology; Diatoms; Multivariate analysis; Navicula; Phytobenthos; Salinity gradient; Scale; Size; Water movement; Ekologi; NATURAL SCIENCES Biology Terrestrial; freshwater and marine ecology; NATURVETENSKAP Biologi Terrestisk; limnisk och marin ekologi; Ecological Botany; Ekologisk botanik;

    Sammanfattning : Benthic diatoms are valuable tools for biological monitoring and paleo-ecological reconstruction of past environmental conditions. This thesis aims at describing size-related properties of benthic diatoms and suggests that data assessment for community analysis can be improved by considering the importance of scale. LÄS MER

  4. 4. Railway operation analysis Evaluation of quality, infrastructure and timetable on single and double-track lines with analytical models and simulation

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Olov Lindfeldt; Bo-Lennart Nelldal; Lars-Göran Mattsson; Ingo Hansen; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Railway operation; Railway capacity; Single-track; Double-track; Partial double-track; Inter-station distance; Delay; Delay propagation; Crossing; Overtaking; Timetable flexibility; Simulation; Experimental design; TECHNOLOGY Civil engineering and architecture; TEKNIKVETENSKAP Samhällsbyggnadsteknik och arkitektur;

    Sammanfattning : This thesis shows the advantages of simple models for analysis of railway operation. It presents two tools for infrastructure and timetable planning. It shows how the infrastructure can be analysed through fictive line designs, how the timetable can be treated as a variable and how delays can be used as performance measures. LÄS MER

  5. 5. Haemophilia in Sweden – Studies on mutations and clinical implications

    Detta är en avhandling från Department of Paediatrics, Lund University

    Författare :Annika Mårtensson; [2015]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; haemophilia; factor VIII; factor IX; factor 8 gene; factor 9 gene; carriers; prenatal diagnosis; mutations; inhibitors; haplotype;

    Sammanfattning : Introduction: Haemophilia A (HA) and B (HB) are two of our most common inherited bleeding disorders and are due to a variety of gene mutations. Aims: The overall objective of the present research was to perform clinical and basic scientific studies on haemophilia in Sweden to further improve and individualise the care of haemophilia patients and their relatives. LÄS MER