Sökning: "multilevel models"

Visar resultat 1 - 5 av 60 avhandlingar innehållade orden multilevel models.

  1. 1. Intelligence and models for cognitive development

    Författare :Linda Wänström; Daniel Thorburn; Gösta Hägglund; Dag Sörbom; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; intelligence; cognitive development; sample size; multilevel models; latent growth curve models; Statistics; Statistik; statistik; Statistics;

    Sammanfattning : This dissertation focuses on cognitive development. In papers I and II, I study a special model, the second order latent growth curve model, that can be used to study cognitive development. Algebraic expressions for the variance of the estimation of slope differences are given. LÄS MER

  3. 2. Understanding therapeutic traditions in a multilevel framework - new methodological approaches

    Författare :Henrik Ohlsson; Malmö Institutionen för kliniska vetenskaper; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; adherence to guidelines; practice variation; Multilevel models; variance components; determinants of prescription;

    Sammanfattning : Background: The observation of differences in the way apparently similar patients are treated from one health care setting to another, i.e., practice variation, have been recognized in numerous studies. The variations across the health care settings have been shown to exist for different outcomes. LÄS MER

  4. 3. A study of multilevel models with block circular  symmetric covariance structures

    Författare :Yuli Liang; Tatjana von Rosen; Dietrich von Rosen; Abdullah Almasri; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Block circular symmetry; Covariance matrix; Explicit solution; Maximum likelihood estimator; Multilevel model; Spectrum; statistik; Statistics; Matematik;

    Sammanfattning : This thesis concerns the study of multilevel models with specific patterned covariance structures and addresses the issues of maximum likelihoodestimation. In particular, circular symmetric hierarchical datastructures are considered. LÄS MER

  5. 4. Spatial analysis and modeling of nerve fiber patterns

    Författare :Claes Andersson; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; hierarchical models; Bayesian estimation; epidermal nerve fibers; cluster processes; spatial point processes; diabetic neuropathy; Bayesian field theory; Diabetic neuropathies; Multilevel models Statistics ; Institutionen för matematiska vetenskaper. Tillämpad matematik och statistik.; CTH;

    Sammanfattning : Diabetic neuropathy is a condition associated with diabetes affecting the epidermal nerve fibers (ENFs). This thesis presents analysis methods and models for ENF data, with two main puroposes: to find early signs of diabetic neuropathy and to characterize how this condition changes the nerve fiber structure. LÄS MER

  7. 5. Managing the Transformation Towards Advanced Service Provision : A Multilevel Framework of Servitization

    Författare :Sambit Lenka; Daniel Kindström; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Servitization; Advanced Services; Multilevel; Transformation; Ambivalence; Microfoundations; Capabilities; Entreprenörskap och innovation; Entrepreneurship and Innovation;

    Sammanfattning : Product-oriented firms are increasingly moving towards providing services to customers in a bid to differentiate their offerings, increase customer loyalty, and achieve higher, more stable revenue streams. This trend of servitization is becoming ubiquitous in manufacturing firms. LÄS MER