Sökning: "lattice"

Visar resultat 11 - 15 av 699 avhandlingar innehållade ordet lattice.

  1. 11. Atomistic simulations of lattice defects

    Författare :Mattias Forsblom; Grimvall Göran; Kai Nordlund; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Theoretical physics; Teoretisk fysik; Physics; Fysik;

    Sammanfattning : Mechanical properties of solids are governed by crystal imperfections. Computational materials science is largely concerned with the modelling of such defects, e.g. their formation, migration, and interaction energies. LÄS MER

  3. 12. Voronoi-Based Coding

    Författare :Erik Agrell; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Voronoi diagram; linear block code; Gaussian channel; neighbor descent; nearest neighbor search algorithm; computational geometry; asymptotic theory; source coding; lattice; vector quantization; soft-decision decoding; index assignment; channel coding; complexity;

    Sammanfattning : The performance of a digital communication system can generally be improved by increasing the number of variables being jointly coded. In this sense, it is desirable to have, e.g., higher-dimensional quantizers, longer channel codes, and more users in a multiple-access system. LÄS MER

  4. 13. The one-dimensional Kondo Lattice in the Majorana Fermion representation

    Författare :Matteo Bazzanella; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Majorana fermions; kondo lattice; path integral; spin-selective kondo insulator;

    Sammanfattning : This thesis analyses the possibilities offered by the representation of quantum mechanical operators in terms of Majorana fermions. These objects can be imagined as algebraic constituents of the fermionic degrees of freedom, allowing for a different representation of many Hamiltonians. LÄS MER

  5. 14. On some Orderings of Extensions of Arithmetic

    Författare :Christian Bennet; Göteborgs universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; Arithmetization; interpretability; lattice; Lindenbaum algebra; partal conservativity; Peano Arithmetic; relative consistency; self-reference;

    Sammanfattning : .... LÄS MER

  7. 15. Some aspects on designing for metal Powder Bed Fusion

    Författare :Sebastian Hällgren; Lars Pejryd; Jens Ekengren; Robert Pederson; Örebro universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Additive Manufacturing; AM; DfAM; lattice; Powder Bed Fusion; Topology optimization; Selective Laser Melting; Electron Beam Melting; Design for manufacturability;

    Sammanfattning : Additive Manufacturing (AM) using the Powder Bed Fusion (PBF) is a relatively new manufacturing method that is capable of creating shapes that was previously practically impossible to manufacture. Many think it will revolutionize how manufacturing will be done in the future. LÄS MER