Sökning: "Third wave"

Visar resultat 6 - 10 av 158 avhandlingar innehållade orden Third wave.

  1. 6. Efficient Simulation of Wave Phenomena

    Författare :Martin Almquist; Ken Mattsson; Gianluca Iaccarino; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; finite difference method; high-order accuracy; stability; summation by parts; simultaneous approximation term; quantum mechanics; Dirac equation; local time-stepping; Beräkningsvetenskap med inriktning mot numerisk analys; Scientific Computing with specialization in Numerical Analysis;

    Sammanfattning : Wave phenomena appear in many fields of science such as acoustics, geophysics, and quantum mechanics. They can often be described by partial differential equations (PDEs). As PDEs typically are too difficult to solve by hand, the only option is to compute approximate solutions by implementing numerical methods on computers. LÄS MER

  3. 7. Heterostructure Barrier Varactors for High Efficiency Frequency Multipliers

    Författare :Lars Dillner; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; frequency multiplier; Heterostructure Barrier Varactor HBV ; millimeter wave; submillimeter wave; power source;

    Sammanfattning : This thesis describes the Heterostructure Barrier Varactor (HBV) and its application in frequency multipliers. Different HBV materials, fabrication processes, and device models are presented. The aim of this work is to improve the efficiency of HBV frequency multipliers. LÄS MER

  4. 8. Mellan sanning och konsekvens : En studie av den tredje generationens kognitiva beteendeterapier

    Författare :Jonas Ringström; Sociologi; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; acceptance and commitment therapy; Third wave; dialectical behavioral therapy; metacognitive therapy; Steven C. Hayes; Marsha Linehan; Adrian Wells; acceptance; mindfulness; historical epistemology; Gaston Bachelard; Georges Canguilhem; Louis Althusser; Michel Foucault; epistemological break; ideology;

    Sammanfattning : Avhandlingen är en analys av vad som kommit att kallas för den tredje generationens kognitiva beteendeterapier, här representerade av Acceptance and Commitment Therapy, den metakognitiva terapimodellen och dialektisk beteendeterapi. Avhandlingen kan delas in i två övergripande delar. LÄS MER

  5. 9. Large eddy simulation of transonic flow with shock wave/turbulent boundary layer interaction

    Författare :Christian Wollblad; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; shock wave; turbulent boundary layer; LES;

    Sammanfattning : Large eddy simulations (LES) of shock wave/turbulent boundary layer interaction (SWTBLI) have been carried out. The flow configuration was that of transonic flow over a bump with inlet Mach number 0.75 and maximum Mach number 1.27. LÄS MER

  7. 10. Structural health monitoring of large concrete structures

    Författare :Patrik Fröjd; Teknisk geologi; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; diffuse wave fields; coda waves; structural health monitoring; ultrasound; continuous wave;

    Sammanfattning : There is an increasing demand on the safety and reliability of the civil structures that make up our cities and infrastructure. The field of structural health monitoring aims to provide continuous non-destructive evaluation of such structures. LÄS MER