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1. 1. High-efficiency dissipative Kerr solitons in microresonators

   Författare :Òskar Bjarki Helgason; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; dissipative Kerr solitons; dissipative solitons; nonlinear optics; microresonators; microcombs; optical frequency combs;

   Sammanfattning : The microresonator comb (microcomb) is a laser source that generates equally spaced coherent lines in the spectral domain. Having a chip-scale size and the potential of being low cost, it has attracted attention in multiple applications. LÄS MER

3. 2. Dissipative Kerr solitons in normal dispersion waveguides

   Författare :Òskar Bjarki Helgason; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; optical frequency combs; four-wave mixing; dissipative solitons; microresonators; nonlinear optics;

   Sammanfattning : The microresonator comb (microcomb) is a laser source which generatesequally spaced coherent lines in the spectral domain. Having a miniaturefootprint and the potential of being low cost, it has attracted attention inmultiple applications. LÄS MER

4. 3. Discretizations of nonlinear dissipative evolution equations. Order and convergence

   Författare :Eskil Hansen; Numerisk analys; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; kontroll; systems; numerisk analys; control; Datalogi; numerical analysis; Computer science; B-convergence; Dissipative maps; Logarithmic Lipschitz constants; Galerkin methods; Nonlinear evolution equations; Time discretizations; system;

   Sammanfattning : The theme of this thesis is to study discretizations of nonlinear dissipative evolution equations, which arise in e.g. advection-diffusion-reaction processes. LÄS MER

5. 4. Spatial and Physical Splittings of Semilinear Parabolic Problems

   Författare :Erik Henningsson; Matematik LTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; splitting schemes; parabolic equations; semilinear; evolution equations; dissipative; convergence order; dimension splitting; domain decomposition; axonal growth;

   Sammanfattning : Splitting methods are widely used temporal approximation schemes for parabolic partial differential equations (PDEs). These schemes may be very efficient when a problem can be naturally decomposed into multiple parts. LÄS MER

7. 5. Modelling of frictional joints : from dissipative mechanisms to structural response

   Författare :Henrik Wentzel; Mårten Olsson; Lennart Josefson; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Frictional joint; Bolted joint; Finite element method; Non-linear vibration; Non-local friction; Contact mechanics; Dynamics; Engineering mechanics; Teknisk mekanik;

   Sammanfattning : .... LÄS MER