Sökning: "Johan back"

Visar resultat 16 - 20 av 54 avhandlingar innehållade orden Johan back.

  1. 16. Modeling of Scattering by Cracks in Anisotropic Solids - Application to Ultrasonic Detection

    Författare :Johan Mattsson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; elastic wave; ultrasonics; crack; integral equations; transducer; anisotropy; scattering; nondestructive testing;

    Sammanfattning : Elastodynamic wave scattering in anisotropic solids with application to ultrasonic nondestructive testing (NDT) is treated and mathematically modeled in this thesis. The scatterers are infinite strip-like cracks and the solids are homogeneous and linearly elastic with negligible damping. LÄS MER

  3. 17. New anions for lithium battery electrolytes

    Författare :Johan Scheers; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Batteries; ab initio; electrolytes; Raman spectroscopy; anions; DFT; ionic liquids; lithium salts;

    Sammanfattning : Energy storage is crucial to realize a new global energy paradigm based on renewable energy sources. Batteries are well suited this need, with the advantages of being mobile and potentially environmentally benign. LÄS MER

  4. 18. Taxes, Nudges, and Conformity : Essays in Labor and Behavioral Economics

    Författare :Egebark Johan; Peter Fredriksson; Roope Uusitalo; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Youth unemployment; Payroll tax; Self-employment tax; Tax subsidy; Labor costs; Resource conservation; Default option; Moral appeal; Social interactions; Contagion; Natural Field Experiment; Economics; nationalekonomi;

    Sammanfattning : This thesis consists of four papers summarized as follows.Do Payroll Tax Cuts Raise Youth Employment? We study whether payroll tax reductions are an effective means to raise youth employment. In 2007, the Swedish employer-paid payroll tax was cut on a large scale for young workers, substantially reducing labor costs for this group. LÄS MER

  5. 19. Execution tracing of large distributed systems

    Författare :Johan Moe; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Computer science; Datavetenskap;

    Sammanfattning : Understanding the dynamic properties of a large distributed software system is most challenging. Knowledge of a system's dynamics is a prerequisite for the design of viable solutions for both coding and testing. LÄS MER

  7. 20. NA transmembrane domain : Amphiphilic drift to accommodate two functions

    Författare :Johan Nordholm; Robert Daniels; Ervin Fodor; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; influenza; IAV; neuraminidase; NA; transmembrane domain; TMD; secretory protein; ER-targeting sequence; ER-targeting sequence coding region; protein regulation; NS1; GALLEX; Biochemistry; biokemi;

    Sammanfattning : Neuraminidase (NA) is one of two major antigens on the surface of influenza A viruses. It is comprised of a single N-terminal transmembrane domain (TMD), a stalk domain, and a C-terminal enzymatic head domain that cleaves sialic acid, most notably to release new particles from the host cell surface. LÄS MER