Search for dissertations about: "Rolf Johansson"

Showing result 1 - 5 of 17 swedish dissertations containing the words Rolf Johansson.

  2. 1. Thermally cured coil-coatings utilizing novel resins and fatty acid methyl esters as reactive diluents

    Author : Katarina Johansson; Mats Johansson; Rolf van Benthem; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Coatings; Coil-coatings; Thermal cure; Reactive diluents; Fatty acids; Transesterification; Hyperbranched polyester resins; Film properties; Polymer chemistry; Polymerkemi;

    Abstract : Solvent-borne thermally cured coil-coating resins contain large amounts of volatile organic solvents in order to obtain suitable flow for film application. This work describes how the expensive and environmental hazardous volatile organic solvent content of a solvent-borne thermally cured polyester/melamine coil-coating system can be reduced by introduction of fatty acid methyl esters (FAMEs) as reactive diluents and modification of the polyester binder resin. READ MORE

  4. 2. Multivariable Adaptive Control

    Author : Rolf Johansson; Institutionen för reglerteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : This thesis treats the problem of direct adaptive control of linear multivariable systems. The parametrization problem of adaptive control is discussed extensively. A pole-placement problem and a model-matching problem are formulated and interpreted in terms of model reference control. READ MORE

  5. 3. Multiple-Bit Errors in Computer Systems

    Author : Rolf Johansson; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; fault sim ulation; fault tolerance; single event upsets; error-correcting codes; multiple-bit errors; transient faults; fault modelling; physical fault injection;

    Abstract : This thesis discusses the types of transient faults caused by heavy-ion or a-particle radiation that manifest as multiple-bit errors and how information redundancy techniques can achieve fault tolerance with respect to some classes of multiple-bit errors. The first part of the thesis considers the fault modelling problem, beginning with the problem of how single event upsets (SEUs) originating from faults in register cells in microprocessors manifest as primary errors. READ MORE

  6. 4. Stereo and regio controlled halogenation, and synthesis of low molecular weight carbohydrates

    Author : Rolf Johansson; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : The regio- and stereoselective introduction of halogens as well as unsaturation into carbohydrates is investigated with triphenylphosphine - halide systems. Three different glycosidation methods are presented. READ MORE

  7. 5. Postpartum depression, depressive symptoms and parental stress in mothers and fathers 25-30 months after child birth : A family perspective

    Author : Maude Johansson; Idor Svensson; Rolf Holmqvist; Linnéuniversitetet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Postpartum depression; Depressive symptoms; Parental stress; Child health care; Postpartum depression; Depressiva symtom; Föräldrastress; Barnhälsovården; Psychology; Psykologi;

    Abstract : The overall aim of this thesis was to explore the prevalence of postpartum depression and parental stress 25 - 30 months after delivery. The first study was conducted 25 months after delivery. READ MORE