Search for dissertations about: "Jan Olsson"

Showing result 6 - 10 of 60 swedish dissertations containing the words Jan Olsson.

  2. 6. GeoGebra, Enhancing Creative Mathematical Reasoning

    Author : Jan Olsson; Carina Granberg; Johan Lithner; Kristina Juter; Högskolan Dalarna; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Linjära funktioner; dynamiska programvaror; problemlösning; resonemang; Utbildning och lärande; Education and Learning;

    Abstract : The thesis consists of four articles and this summarizing part. All parts have focused on bringing some insights into how to design a didactical situation including dynamic software (GeoGebra) to support students’ mathematical problem solving and creative reasoning as means for learning. The four included articles are:I. Granberg, C. READ MORE

  4. 7. An architecture for diagnostic reasoning based on causal models

    Author : Jan Olsson; Stockholms universitet; []
    Keywords : Diagnostiska metoder; Dynamisk programmering; Expertsystem; Databehandling;

    Abstract : This thesis proposes an architecture for diagnostic reasoning employing causal models. The architecture embodies a knowledge representation at the problem-solving layer. That is, the way a problem is solved—in this case to arrive at a diagnosis—is an integral part of the knowledge representation. READ MORE

  5. 8. Delivery of TypeIII Secreted Toxins by Yersinia pseudotuberculosis : the Role of LcrV, YopD, and Free Lipids in the Translocation Process

    Author : Jan Olsson; Hans Wolf-Watz; Ina Attree; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Yersinia; T3SS; translocation; YopD; LcrV; YLC; fatty acids.; Molecular biology; Molekylärbiologi;

    Abstract : Bacteria that infect humans and animals face a hard combat with the host´s immune system and in order to establish infection, pathogenic bacteria has evolved mechanisms to avoid being cleared from the host tissue. Many Gram-negatives carry a Type 3 secretion (T3S) system that is used to deliver effector proteins (toxins) into host cells. READ MORE

  6. 9. Dynamic software enhancing creative mathematical reasoning

    Author : Jan Olsson; Johan Lithner; Carina Granberg; Umeå universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; didactics of mathematics; matematikdidaktik;

    Abstract : This thesis includes two articles and a coat. The articles present two studies investigating students’ reasoning when they were working in pairs, solving mathematics problems using the dynamic software, GeoGebra, The first study shows that the students used GeoGebra as a collaborative environment where they shared their individual reasoning to one another. READ MORE

  7. 10. The HCCI Engine – High Load Performance and Control Aspects

    Author : Jan-Ola Olsson; Förbränningsmotorer; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; System Identification; Motors and propulsion systems; Motorer; framdrivningssystem; Real Time; Black-Box Model; LQG; Closed-Loop Control; Internal Combustion Engine; Emissions; EGR; Efficiency; HCCI; Homogeneous Charge Compression Ignition;

    Abstract : Current combustion engines provide excellent performance for vehicle propulsion and power generation. However, recent demands from society ask for higher efficiencies and lower emissions. These requirements are hard to meet with current technology and call for new solutions. READ MORE