Sökning: "K Pettersson"

Visar resultat 1 - 5 av 23 avhandlingar innehållade orden K Pettersson.

  1. 1. Sami tourism in Northern Sweden : Supply, demand and interaction

    Författare :Robert Pettersson; Ulf Wiberg; Dieter K Müller; Bruno Jansson; Thomas Hinch; Umeå universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Social and economic geography; Indigenous Tourism; Sami; Sápmi; Tourism Supply; Tourism Demand; Stated Preference; Attitudes; Kulturgeografi; Human geography; Kulturgeografi; Social and Economic Geography; kulturgeografi; Human geography; economic geography;

    Sammanfattning : Indigenous tourism is an expansive sector in the growing tourism industry. The Sami people living in Sápmi in northern Europe have started to engage in tourism, particularly in view of the rationalised and modernised methods of reindeer herding. Sami tourism offers job opportunities and enables the spreading of information. LÄS MER

  3. 2. Grafisk och algebraisk representation : Gymnasieelevers förståelse av linjära funktioner

    Författare :Annika Pettersson; Igor Gachkov; Kerstin Pettersson; Lovisa Sumpter; Karlstads universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; mathematics education; linear function; graphic representation; scale; concept image; Matematik; Mathematics;

    Sammanfattning : This thesis concerns upper secondary students’ understanding of algebraic and graphic representation of linear functions. Components of the students’ concept images, so-called ‘concept elements’, were studied as a way to capture their understanding. LÄS MER

  4. 3. Development of LC-MS/MS Methods for the Analysis of Chiral and Achiral Pharmaceuticals and Metabolites in Aqueous Environmental Matrices

    Författare :Victoria K.H. Barclay; Curt Pettersson; Monika Johansson; Niklas Tyrefors; Mohamed Abdel-Rehim; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Environmental water matrices; chiral separation; LC-MS MS; trace analysis; method development; active pharmaceutical ingredients; metabolites; Analytical Pharmaceutical Chemistry; Analytisk farmaceutisk kemi;

    Sammanfattning : This thesis describes the development of liquid chromatography tandem mass spectrometry (LC-MS/MS) methods for the trace analysis of active pharmaceutical ingredients (APIs) and their metabolites in aqueous environmental matrices. The research was focused on the development of chiral LC-MS/MS methods for the analysis of fluoxetine and metoprolol, as well as their chiral metabolites in environmental water samples. LÄS MER

  5. 4. Model-Based Test Case Generation for Real-Time Systems

    Författare :Anders Hessel; Paul Pettersson; Bengt Jonsson; Bernhard K. Aichernig; Uppsala universitet; []
    Nyckelord :Model-Based Testing; Model Checking; Coverage Criteria; Real-Time Systems; Black-Box Testing; Timed Automata; Test Case Generation; Conformance Testing;

    Sammanfattning : Testing is the dominant verification technique used in the software industry today. The use of automatic test case execution increases, but the creation of test cases remains manual and thus error prone and expensive. To automate generation and selection of test cases, model-based testing techniques have been suggested. LÄS MER

  7. 5. Inductively Coupled Plasma Atomic Emission Spectrometry : Exploring the Limits of Different Sample Preparation Strategies

    Författare :Barbro Kollander; Jean Pettersson; Marit Andersson; Jonas Bergquist; Grethe Wibetoe; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; multi element analysis; trace element; ICP-AES; inductively coupled plasma atomic emission spectromtery; water analysis; liver analysis; non digested samples; medical samples; biological samples; samples from biopsies and autopsies; mice organ; fast analysis; internal standard; preconcentration; matrix elimination; Cu; Zn; Mn; Co; Pb; Cd; Mg; Ca; Fe; Ni; Cr; S; P; K; Al; Analytical chemistry; Analytisk kemi; Analytical Chemistry; Analytisk kemi;

    Sammanfattning : This thesis describes two different sample preparation strategies for inductively coupled plasma atomic emission spectrometry (ICP-AES), and their ability regarding multi element quantification in complex samples. Sensitivity, repeatability, reproducibility and accuracy were investigated. LÄS MER