Sökning: "NLS"

Visar resultat 1 - 5 av 10 uppsatser innehållade ordet NLS.

  1. 1. Dom-debatten och litteracitet

    Uppsats för yrkesexamina på avancerad nivå, Södertörns högskola/Lärarutbildningen

    Författare :Kalle Grahn; [2023]
    Nyckelord :NLS; dom-reform; Swedish; the National Test in Swedish and Swedish as Second Language; NLS; dom-reform; svenska; nationella proven i svenska och svenska som andra språk.;

    Sammanfattning : The Swedish debate regarding the reform of the third person pronoun plural has been examined with the NLS theory and with the perspective of literacy as not only a mental process but also as a social practice. The debate was initiated in autumn of 2016 by an article written by the teacher Henrik Birkebo in which he argued for a reform. LÄS MER

  3. 2. Numerical simulation of the non-linear Schrödinger equation A comparative study based on the summation-by-parts method in space and time

    Master-uppsats, Uppsala universitet/Institutionen för informationsteknologi

    Författare :Ibrohim Hamoud; [2023]
    Nyckelord :;

    Sammanfattning : In this work, we present the numerical implementation of various time marching methods based on the summation-by-parts (SBP) method for the time integration of nonlinear dispersive systems. More specifically, we consider the nonlinear Schrödinger (NLS) equation that accepts soliton or soliton-like solution as a primary case study. LÄS MER

  4. 3. Airborne Angle-Only Geolocalization

    Master-uppsats, Linköpings universitet/Reglerteknik

    Författare :Tove Kallin; [2021]
    Nyckelord :Angle-only; Bearing-only; Bearing; Geolocalization; Localization; Jammers; NLS; EKF; UKF; Cramér-Rao Lower Bound; Terrain; Elevation Data;

    Sammanfattning : Airborne angle-only geolocalization is the localization of objects on ground level from airborne vehicles (AV) using bearing measurements, namely azimuth and elevation. This thesis aims to introduce elevation data of the terrain to the airborne angle-only geolocalization problem and to demonstrate that it could be applicable for localization of jammers. LÄS MER

  5. 4. On the variational characterization of quasi-periodic standing waves of the nonlinear Schrödinger equation

    Kandidat-uppsats, Lunds universitet/Matematik (naturvetenskapliga fakulteten)

    Författare :Gustav Jillbratt; [2018]
    Nyckelord :Mathematics and Statistics;

    Sammanfattning : We consider quasi-periodic standing wave solutions U(t, x) = exp(i(ωt−px))Ψ(x) to the one-dimensional defocusing cubic nonlinear Schrödinger equation, where we assume that Ψ : R → C is 2π−periodic. We study a constrained minimization problem associated with these solutions, and we show that solutions with minimal period of Ψ(x) strictly less than 2π cannot be minimizers, whereas locally the minimum is obtained among those solutions with minimal period 2π. LÄS MER

  7. 5. “It won’t happen to me” VS “It could have been me” - Changes in health behavior initiated by a negative health shock to a peer

    Master-uppsats, Lunds universitet/Ekonomisk-historiska institutionen

    Författare :Lise-Lotte Verhoef; [2017]
    Nyckelord :health behavior; peer effects; smoking; diet; exercise; Social Sciences; Business and Economics; Medicine and Health Sciences;

    Sammanfattning : Despite being aware of the health risks associated with making “bad” health decisions, we seem to deny our personal vulnerability to the harmful effects of poor health behavior. Aiming to explore whether the harmful effects associated with poor health behavior are personalized once our peers suffer from them, reflected by improved health behavior and referred to as “peer effects”, this study uses individual-level U. LÄS MER