Sökning: "plane curve"

Visar resultat 21 - 25 av 40 avhandlingar innehållade orden plane curve.

  1. 21. Carbon Effect on Mechanical Properties in Austenitic Steels - A DFT-based Study

    Författare :Ruiwen Xie; Levente Vitos; Pär Olsson; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Teknisk materialvetenskap; Materials Science and Engineering;

    Sammanfattning : To study the effect of carbon interstitials in austenitic steels on plastic deformation mechanisms is the main goal of the present thesis. Using first-principlesmethods, the generalized stacking fault energy (GSFE) of C-alloyed γ-Fe is firstcalculated. The GSFE curve includes several prominent stacking fault energiesthat are fundamental for, e. LÄS MER

  3. 22. Stiffness characterization in Non-Crimp Fabric Composites

    Författare :Hana Zrida; Spyros Tsampas; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Polymera konstruktionsmaterial; Polymeric Composite Materials;

    Sammanfattning : Lightweight materials with high stiffness and damage tolerance are requested for aerospace, marine and automotive industries. Many types of composite materials are today used in various types of load carrying structures, due to their excellent strength and stiffness to weight ratio. LÄS MER

  4. 23. Parton Cascades and Hadronisation in High Energy Processes

    Författare :Sandipan Mohanty; Teoretisk partikelfysik - Geonomgår omorganisation; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; small invariant mass hadronic systems; hadronisation; parton cascades; Elementary particle physics; Elementarpartikelfysik; kvantfältteori; quantum field theory; Bose-Einstein correlations; Fysicumarkivet A:2003:Mohanty;

    Sammanfattning : The Lund string fagmentation model was reformulated as a process along the boundary curve of the string called the directrix, in order to treat multigluon strings according to the Lund model area law. It was found that the hadrons in the final state could be collected into several groups, in such a way that the energy-momenta of the hadrons in a group lie in a plane in the Minkowski space within small transverse fluctuations. LÄS MER

  5. 24. Knots and Surfaces in Real Algebraic and Contact Geometry

    Författare :Johan Björklund; Tobias Ekholm; Grigory Mikhalkin; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Algebra and geometry; Algebra och geometri; Mathematics; Matematik;

    Sammanfattning : This thesis consists of a summary and three articles. The thesis is devoted to the study of knots and surfaces with additional geometric structures compared to the classical smooth structure. LÄS MER

  7. 25. Spatio-Temporal Scale-Space Theory

    Författare :Daniel Fagerström; Jan-Olof Eklundh; Luc Florack; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Image analysis; Bildanalys;

    Sammanfattning : This thesis addresses two important topics in developing a systematic space-time geometric approach to real-time, low-level motion vision. The first one concerns measuring of image flow, while the second one focuses on how to find low level features. LÄS MER