Sökning: "B-splines"

Visar resultat 6 - 10 av 18 uppsatser innehållade ordet B-splines.

  1. 6. B-spline Parametrized Approximation and Variation of Vehicle Trajectories For Autonomous Vehicles Simulation

    Master-uppsats, KTH/Matematik (Avd.)

    Författare :Karolina Siemieniuk; [2021]
    Nyckelord :;

    Sammanfattning : A big focus of the Automotive Industry’s work is now on the development ofAutonomous Vehicles (AVs). In order to be able to release them on the market,they need to be tested and validated in a safe and efficient way. That is whycompanies working on the development of AVs use simulation to test the workthey are completing. LÄS MER

  3. 7. Isogeometric analysis as a tool for large deformation shape optimization

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Institutionen för byggvetenskaper; Lunds universitet/Hållfasthetslära

    Författare :Max Kurki; [2021]
    Nyckelord :IGA; NURBS; Shape optimization; Large deformations; Topology optimization; Technology and Engineering;

    Sammanfattning : The framework for isogeometric analysis (IGA) is presented, especially the construction and use of non-uniform rational B-splines (NURBS) to represent geometry, and a method utilizing IGA for structural optimization both for linear elastic and non-linear elastic deformations is implemented. Topology optimization of a linear elastic cantilever is performed, showing that IGA is inecient for topology optimization. LÄS MER

  4. 8. Boundedness of a Class of Hilbert Operators on Modulation Spaces

    Kandidat-uppsats, Linnéuniversitetet/Institutionen för matematik (MA)

    Författare :Nils Zandler Andersson; [2019]
    Nyckelord :;

    Sammanfattning : In this work we take interest in frames and modulation spaces. On the basis of their properties, we show how frame expansions can be used to prove the boundedness of a particular class of Hilbert operators on modulation spaces taking advantage of the special category of piece-wise polynomial functions known as B-splines. .. LÄS MER

  5. 9. Deformable 3D Brain MRI Registration with Deep Learning

    Master-uppsats, KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Författare :Louis Joos; [2019]
    Nyckelord :Deep Learning; Image Registration;

    Sammanfattning : Traditional deformable registration methods have achieved impressive performances but are computationally time-consuming since they have to optimize an objective function for each new pair of images. Very recently some learning-based approaches have been proposed to enable fast registration by learning to estimate the spatial transformation parameters directly from the input images. LÄS MER

  7. 10. Defining and predicting fast-selling clothing options

    Master-uppsats, Linköpings universitet/Statistik och maskininlärning

    Författare :Sara Jesperson; [2019]
    Nyckelord :Apparel retail; B-splines; Gaussian mixture model; Probabilistic prediction; Sales prediction;

    Sammanfattning : This thesis aims to find a definition of fast-selling clothing options and to find a way to predict them using only a few weeks of sale data as input. The data used for this project contain daily sales and intake quantity for seasonal options, with sale start 2016-2018, provided by the department store chain Åhléns. LÄS MER