Sökning: "Lagrange constraints"

Hittade 4 uppsatser innehållade orden Lagrange constraints.

  1. 1. Lagrangian Bounding and Heuristics for Bi-Objective Discrete Optimisation

    Kandidat-uppsats, Linköpings universitet/Tillämpad matematik; Linköpings universitet/Tekniska fakulteten

    Författare :Ida Åkerholm; [2022]
    Nyckelord :Lagrangian relaxation; bi-objective optimisation; Pareto frontier; heuristics; discrete optimisation;

    Sammanfattning : For larger instances of multi-objective optimisation problems, the exact Pareto frontier can be both difficult and time-consuming to calculate. There is a wide range of methods to find feasible solutions to such problems, but techniques for finding good optimistic bounds to compare the feasible solutions with are missing. LÄS MER

  3. 2. Suturing in Surgical Simulations

    Master-uppsats, KTH/Numerisk analys, NA

    Författare :Kiran Beersing-Vasquez; [2019]
    Nyckelord :Surgical suturing; spline model; Lagrange constraints; multibody dynamics; differential algebraic equations; Kirurgisk suturering; spline-modell; Lagrange-begränsningar; multikroppsdynamik; differentiella algebraiska ekvationer;

    Sammanfattning : The goal of this project is to develop virtual surgical simulation software in order to simulate the suturing and knot tying processes associated with surgical thread. State equations are formulated using Lagrangian mechanics, which is useful for the conservation of energy. LÄS MER

  4. 3. Vessel segmentation for time resolved phase contrast MRI

    Master-uppsats, Lunds universitet/Matematik LTH

    Författare :Sebastian Bidhult; [2013]
    Nyckelord :Medical image analysis; Active contours; Euler Lagrange equations; Expectation Maximization algorithm.; Mathematics and Statistics;

    Sammanfattning : Quantication of cardiovascular flow and blood volumes are useful tools in diagnosing cardiovascular disease such as congenital heart defects and different kinds of valve leakage. Medical imaging techniques enables non-invasive analysis of anatomy and physiology. LÄS MER

  5. 4. Holonomic versus nonholonomic constraints

    Kandidat-uppsats, Avdelningen för fysik och elektroteknik

    Författare :Mattias Flygare; [2012]
    Nyckelord :analytical mechanics; classical mechanics; lagrangian; d alembert s principle; hamilton s principle; holonomic; nonholonomic; constraints; differential geometry; fibre bundle; curvature; falling disc;

    Sammanfattning : Courses in analytical mechanics for undergraduate students are often limited to treatment of holonomic constraints, which are constraints on coordinates. The concept of nonholonomic constraints, constraints on velocities, is usually only mentioned briefly and it is easy to get a wrongful idea of what they are and how to treat them. LÄS MER