Sökning: "latent variable analysis"

Visar resultat 21 - 25 av 38 avhandlingar innehållade orden latent variable analysis.

  1. 21. Cognitive abilities - aspects of structure, process and measurement

    Författare :Berit Carlstedt; Göteborgs universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Cognitive abilities; factor models of intelligence; Enlistment battery; hierarchical models; item sequencing; construct validity; differentiation hypothesis; test evaluation; structural equation modeling;

    Sammanfattning : The overall purpose of the thesis is to describe the development of the Swedish system of measuring cognitive abilities applied at enlistment of conscripts. The Enlistment Battery has been used for more than fifty years to classify 18-year old men into military positions for their compulsory service. LÄS MER

  3. 22. Sequential Data Learning, Scalable Models and Adversarial Regularization

    Författare :Jin Huang; Ming Xiao; Geyong Min; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Time Series Prediction (TSP) has been used in mobile network traffic data analysis to produce predictive results for network planning and resource allocation. In the first part of this thesis, we propose a novel method of predicting mobile network traffic using neural networks based on conditional probability modeling between adjacent data windows in the time series sequence. LÄS MER

  4. 23. Persistent Organic Pollutants and the Environment : A Chemometric Approach to the Study of Halogenated Aromatics

    Författare :Tomas Öberg; Bo Bergbäck; Bo Wiman; Jaakko Paasivirta; Högskolan i Kalmar; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Environmental chemistry; Miljökemi; Environmental Chemistry; Miljökemi;

    Sammanfattning : Concern is growing about the environmental and health effects of persistent organic pollutants (POPs), many of which are halogenated aromatic compunds. The research reported in this thesis focuses on factors determining their behaviour and release into the environment. LÄS MER

  5. 24. Modeling and identification of nonlinear and impulsive systems

    Författare :Per Mattsson; Alexander Medvedev; Roy Smith; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; nonlinear system identification; modeling; impulsive systems; impulse detection;

    Sammanfattning : Mathematical modeling of dynamical systems plays a central roll in science and engineering. This thesis is concerned with the process of finding a mathematical model, and it is divided into two parts - one that concentrates on nonlinear system identification and another one where an impulsive model of testosterone regulation is constructed and analyzed. LÄS MER

  7. 25. Läsförmågan bland 9-10-åringar. Betydelsen av skolklimat, hem- och skolsamverkan, lärarkompetens och elevers hembakgrund

    Författare :Elisabeth Frank; Göteborgs universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; läsförmåga; skol- och klassrumsklimat; lärarkompetens; hem- och skolsamverkan; flernivåanalys; strukturell ekvationsmodellering; PIRLS; årskurs 3; Pedagogics and Educational Sciences;

    Sammanfattning : Title: Reading skills among 9-10 year olds. The importance of school climate, collaboration between school and home, teacher competence and pupils’ home background Language: Swedish, with summary in English Keywords: PIRLS; reading achievement; school climate; safety; parental participation; collaboration; home and school partnership; teacher competence; two-level structural equation modeling ISBN: 978-91-7346-655-4 The main aim of the thesis is to acquire knowledge about conditions in the school and classroom context that are relevant to students’ reading skills. LÄS MER