Sökning: "measurement properties test evaluation"

Visar resultat 1 - 5 av 45 avhandlingar innehållade orden measurement properties test evaluation.

  1. 1. Developing and validating self-report instruments : assessing perceived driver competence

    Författare :Anna Sundström; Widar Henriksson; Marie Wiberg; Lars R Bergman; Umeå universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Test construction; test validity; measurement; drivers; self-confidence;

    Sammanfattning : The overall aim of this thesis was to develop and validate a self-report instrument for perceived driver competence. The thesis includes six papers and a summary. LÄS MER

  3. 2. Analyzing self-report data : assessing basic psychological needs in education and at work

    Författare :Sofie Holmquist; Bert Jonsson; Miguel Inzunza; Mehdi Ghazinour; Jan-Eric Gustafsson; Umeå universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Validity; Self-Determination theory; Psychometric analysis; Test adaption; Measurement;

    Sammanfattning : The overall aims of this thesis were 1) to investigate how to measure and model basic psychological needs in higher education and work contexts, specifically in Swedish-speaking populations, and 2) to analyze the psychometric properties of basic psychological needs self-report instruments.The thesis consists of four studies and a summary. LÄS MER

  4. 3. Development of a geometallurgical testing framework for ore grinding and liberation properties

    Författare :Abdul-Rahaman Mwanga; Jan Rosenkranz; Hakan Benzer; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Grindability test; mineral texture; breakage properties; mineral liberation; process modeling; geometallurgy; Mineral Processing; Mineralteknik;

    Sammanfattning : Efficient measurement methods for comminution properties are an important prerequisite for testing the variability of an ore deposit within the geometallurgical context. This involves the investigation of effects of mineralogy and mineral texture on the breakage of mineral particles. LÄS MER

  5. 4. Measurement and modelling of young concrete properties

    Författare :Peter Fjellström; Christer Isgren; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Structural Engineering; Konstruktionsteknik;

    Sammanfattning : The main aim of this thesis is to refine models for strength and heat development of the young concrete, and evaluate if developed models at Luleå University of Technology (LTU) for creep, autogenous shrinkage and thermal dilation needs refinement. These are of importance in hardening control and in crack control of a concrete structure. LÄS MER

  7. 5. Lamb wave evaluation of concrete plates

    Författare :Oskar Tofeldt; Teknisk geologi; []
    Nyckelord :Lamb waves; guided waves; impact-echo; concrete; non-destructive evaluation;

    Sammanfattning : This thesis is about the application of Lamb waves for non-destructive evaluation of plate-like concrete structures under one-sided access test condition using a portable equipment consisting of an accelerometer and impact hammer. With this type of equipment and based on array signal processing, the impact-echo (IE) method can be extended with measurements of surface waves; this extension allows an evaluation with Lamb waves. LÄS MER