Search for dissertations about: "Maciej"

Showing result 1 - 5 of 20 swedish dissertations containing the word Maciej.

  2. 1. What explains the credit ratings in economically advanced democracies? Unpacking the role of political stability through ideology, corruption, and transparency

    Author : Maciej Sychowiec; Göteborgs universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; political economy; credit ratings; sovereign debt; political ideology; corruption; transparency;

    Abstract : Credit rating agencies (CRAs) are often referred to in the literature as the “gatekeepers” of the international credit market. Their assessments may determine a government’s ability to finance its budget since good credit ratings allow governments to borrow money on more favorable terms. READ MORE

  4. 2. Characterization of dielectric layers for passivation of 4H-SiC devices

    Author : Maciej Wolborski; Anders Hallén; Lothar Frey; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electrophysics; Elektrofysik;

    Abstract : Silicon carbide rectifiers and MESFET switches are commercially available since 2001 and 2005 respectively. Moreover, three inch SiC wafers can be purchased nowadays without critical defects for the device performance, four inch wafers are available and the next step of technology is set to be the six inch substrate wafers. READ MORE

  5. 3. Organic electronic materials for hydrogen peroxide production

    Author : Maciej Gryszel; Eric Glowacki; Magnus Jonsson; Erin Ratcliff; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; hydrogen peroxide; catalysis; organic materials; electronics;

    Abstract : Hydrogen peroxide (H2O2) is an important oxidant, used in various fields of industry, such as paper manufacturing, production of polymers, detergents, and cosmetics. Considering that the molecule degrades only to H2O and O2, it is regarded as a green chemical. READ MORE

  6. 4. Designing metallic glasses : Alloying, properties, and degrees of freedom

    Author : Maciej Kaplan; Björgvin Hjörvarsson; Gunnar Pálsson; Jochen Schneider; Susanne Norgren; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; amorphous alloys; enthalpy of mixing; glass formation; thermal stability; thermodynamics; mechanical properties; corrosion resistance; hydrogen;

    Abstract : The present design rules for metallic glasses with respect to glass formation, thermal stability (resistance to crystallisation), and material properties can still be improved. A main design rule is to use thermodynamic calculations to determine the composition of eutectic points in the phase space. READ MORE

  7. 5. Projective Links and Their Invariants

    Author : Maciej Mroczkowski; Oleg Viro; Jozef Przytycki; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Algebra and geometry; Real projective space; skein modules; Homfly polynomial; Kauffman polynomial; descending link diagram; Algebra och geometri; Algebra and geometry; Algebra och geometri;

    Abstract : This thesis consists of two papers about knots and links in the real projective space RP3. We present an algorithm to unknot diagrammatically knots and links in RP3. We extend two classical polynomial invariants of links in R3 to links in RP3. READ MORE