Sökning: "B-splines"

Visar resultat 11 - 15 av 18 uppsatser innehållade ordet B-splines.

  1. 11. Radiostereometry Using NURBS Implant Models

    Master-uppsats, Umeå universitet/Institutionen för datavetenskap

    Författare :Heba Shehabeldin; [2018]
    Nyckelord :;

    Sammanfattning : Radiostereometric analysis (RSA) is a method used for determining migration and wear of orthopaedic implants through measurements performed in radiographs. There are two approaches of RSA: marker-based and model-based (MBRSA). Marker-based RSA is the conventional and most accurate method. LÄS MER

  3. 12. Airfoil Optimization Through Differential Evolution

    Master-uppsats, Lunds universitet/Institutionen för energivetenskaper

    Författare :Eddie Nilsson; [2017]
    Nyckelord :Differential evolution; optimization; airfoil; wind turbine; Technology and Engineering;

    Sammanfattning : This thesis presents the development of a numerical optimization algorithm for airfoils, and how it can be used in design of wind turbine blades. It was found that the developed algorithm successfully improves the goal parameters under given conditions and constraints. LÄS MER

  4. 13. Patient-specific blood vessel modeling on data from MR scans of children with congenital heart disease

    Master-uppsats, Lunds universitet/Matematik LTH

    Författare :Andreas Söderlund; [2016]
    Nyckelord :MR; CMR; Cardiac; Magnetic; Resonance; Patient; Specific; Modeling; Matlab; Segment; Creo; B-splines; splines; smoothing; filters; interpolation; 3D; Mathematics and Statistics;

    Sammanfattning : One percent of children have a congenital heart disease, often requiring surgical corrections. The last fifty years have seen a sharp increase in the use of evidence based medicine to identify and treat congenital heart diseases. This has been highly successful but treatments are not customized for individual patients. LÄS MER

  5. 14. Parameter selection and derivative conditions for B-splines applied to gas turbine blade modeling

    Kandidat-uppsats, Lunds universitet/Matematik LTH

    Författare :Andreas Söderlund; [2015]
    Nyckelord :B-splines; spline interpolation; parameter selection; knot selection; Bezier curves; NURBS; derivative conditions; geometric continuity; turbine blade; turbine; compressor; compressor blade; interpolation; Mathematics and Statistics;

    Sammanfattning : In gas turbine blade modeling a stable but yet flexible method of describing the blade shape is crucial. Polynomials and B ́ezier curves have previously been used and in this paper B-splines are employed instead. LÄS MER

  7. 15. Suspensions with small, spherical particles

    Kandidat-uppsats, KTH/Numerisk analys, NA

    Författare :Samuel Zackrisson; [2015]
    Nyckelord :;

    Sammanfattning : Feasibly computable analytic solutions for systems of many particles in fluid dynamics and electrostatics are few and far-between. Simulations and numerical approximations are essential to studying these systems. This is commonly done without directly calculating the interacting field between particles. LÄS MER