Sökning: "fine topology"

Visar resultat 1 - 5 av 15 avhandlingar innehållade orden fine topology.

  1. 1. Topology Meets Frustration : Exact Solutions for Topological Surface States on Geometrically Frustrated Lattices

    Författare :Flore Kiki Kunst; Emil Bergholtz; Jack Lidmar; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Topology; boundary states; surface states; edge states; Chern insulator; Weyl semimetal; Theoretical Physics; teoretisk fysik;

    Sammanfattning : One of the main features of topological phases is the presence of robust boundary states that are protected by a topological invariant. Famous examples of such states are the chiral edge states of a Chern insulator, the helical edge states of a two-dimensional Z2 insulator, and the Fermi arcs of Weyl semimetals. LÄS MER

  3. 2. Pluripolar Sets and Pluripolar Hulls

    Författare :Tomas Edlund; Burglind Juhl-Jöricke; Norm Levenberg; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Mathematical analysis; plurisubharmonic functions; pluripolar set; complete pluripolar set; pluripolar hull; fine topology; finely analytic function; fine analytic continuation; Matematisk analys; Mathematical analysis; Analys;

    Sammanfattning : For many questions of complex analysis of several variables classical potential theory does not provide suitable tools and is replaced by pluripotential theory. The latter got many important applications within complex analysis and related fields. Pluripolar sets play a special role in pluripotential theory. LÄS MER

  4. 3. Topology optimization of antennas and waveguide transitions

    Författare :Emadeldeen Hassan; Martin Berggren; Daniel Noreland; Eddie Wadbro; Mats Gustafsson; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Maxwell s equations; topology optimization; antennas; waveguide transition; finite-difference time-domain; gradient-based optimization; adjoint-field problem; microwave devices.; business data processing; administrativ databehandling;

    Sammanfattning : This thesis introduces a topology optimization approach to design, from scratch, efficient microwave devices, such as antennas and waveguide transitions. The design of these devices is formulated as a general optimization problem that aims to build the whole layout of the device in order to extremize a chosen objective function. LÄS MER

  5. 4. Internal Cooling Design Using Multiphysics Topology Optimization

    Författare :Jonas Lundgren; Carl-Johan Thore; Anders Klarbring; Jan-Erik Lundgren; Joe Alexandersen; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : This thesis investigates topology optimization (TO) as a tool for designing optimal internal cooling configurations in components subjected to external hot gas streams. The work is motivated by the challenge of simultaneously considering objectives from multiple physics domains, and the rapid development of additive manufacturing (AM) in the industry, which makes it possible to realize highly complex TO designs. LÄS MER

  7. 5. Omförhandlingar : Kropp, replik, etik

    Författare :Petra Fransson; Lärare (Teaterhögskolan); []
    Nyckelord :HUMANIORA; HUMANITIES; acting; body; theatrical line; ethics; action; feminist theatre; critical practice; speaking subject; ambiguity as method; performativity; artistic research; Elfriede Jelinek; Simone de Beauvoir; Julia Kristeva; Hanna Arendt; Virginia Woolf; Judith Butler; Gayatri Chakravorty Spivak; Sarah Ahmed;

    Sammanfattning : Renegotiations: Body, Line, Ethics departs from questions concerning authorship and agency for actors in institutionalised settings and moves towards a discussion on ethics, responsibility and possibilities in the body – text relationship. The question of how bodies can be renegotiated in and by the theatrical line is central to the work. LÄS MER