Sökning: "nonlinear literature"

Visar resultat 1 - 5 av 37 uppsatser innehållade orden nonlinear literature.

  1. 1. 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

  3. 2. Approximating Damping Coefficient of Bolted Joints using the Finite Element Method

    Master-uppsats, KTH/Hållfasthetslära

    Författare :Abhiroop Chatterjee; [2023]
    Nyckelord :;

    Sammanfattning : Bolted joints are important due to their energy dissipation property in structures,but the damping mechanism is also highly nonlinear and localized. The goal ofthis thesis is to develop an accurate method for modeling bolted joint dampingin large structures using finite element (FE) software. LÄS MER

  4. 3. Learning From Investor Attention: Examining the Predictive Power of Investor Attention on Market Returns with Machine Learning

    C-uppsats, Handelshögskolan i Stockholm/Institutionen för finansiell ekonomi

    Författare :Ludvig Hartler; Lukas Uhrström; [2022]
    Nyckelord :investor attention; machine learning; PLS; LSTM; stock returns;

    Sammanfattning : We study the predictive properties of investor attention on time series market returns. Extending an earlier proposed index of investor attention aggregated from twelve popularly studied attention proxies, we show that it strongly predicts excess returns on the stock market. LÄS MER

  5. 4. Tensor Decompositions of EEG Signals for Transfer Learning Applications

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Institutionen för reglerteknik

    Författare :Emma Fallenius; Linda Karlsson; [2022]
    Nyckelord :Technology and Engineering;

    Sammanfattning : In this report, tensor decomposition methods of EEG signals have been evaluated for the purpose of transfer learning. The aim has been to address the person-to-person Brain-Computer Interface (BCI) calibration problem by transferring training data between sessions, which can shorten calibration times, extend the amount of training data, and enable using data from simulated environments in real world applications. LÄS MER

  7. 5. Shear Failure of Steel Fiber and Bar Reinforced Concrete Beams Without Stirrups : Predictions based on Nonlinear Finite Element Analyses

    Master-uppsats, KTH/Betongbyggnad

    Författare :David Andersson; [2022]
    Nyckelord :Nonlinear finite element analysis; Shear failure; Fiber reinforced concrete beams; ATENA;

    Sammanfattning : Shear failure in concrete beams are often brittle in nature and potentially dangerous without adequatereinforcing measures. In design of concrete, it is commonly recommended to install transversalreinforcement along the shear span to induce a more ductile structural response, improving the shearcapacity all together and providing sufficient warning prior to collapse. LÄS MER