Sökning: "frequency domain"

Visar resultat 1 - 5 av 209 uppsatser innehållade orden frequency domain.

  1. 1. Sound propagation modelling with applications to wind turbines

    Master-uppsats, KTH/Mekanik

    Författare :Julius Fritzell; [2019]
    Nyckelord :Sound propagation; Wind turbines; Wave equation; Helmholtz equation; Fourier transform; Chebyshev polynomials.;

    Sammanfattning : Wind power is a rapidly increasing resource of electrical power world-wide. With the increasing number of wind turbines installed one major concern is the noise they generate. Sometimes already built wind turbines have to be put down or down-regulated, when certain noise levels are exceeded, resulting in economical and environmental losses. LÄS MER

  2. 2. Longitudinal Flight Mechanics of Paraglider Systems

    Master-uppsats, KTH/Flygdynamik

    Författare :Rene Falquier; [2019]
    Nyckelord :;

    Sammanfattning : This project outlines a cost-effective numerical simulation method for the analysis of the longitudinal mechanics of paraglider systems. It is built on static stability methods for the analyses of low subsonic aircraft, non-linear lifting line methods for aerodynamic parameterization, and frequency domain analysis methods derived from system theory. LÄS MER

  3. 3. Investigation Of Source Parameters Of Earthquakes In Northern Sweden

    Master-uppsats, Uppsala universitet/Geofysik

    Författare :María González-Caneda; [2019]
    Nyckelord :spectral analysis; earthquake source observations; ω-2 source model; moment magnitude; local magnitude; Northern Sweden seismicity.;

    Sammanfattning : By studying the frequency domain of seismic signals generated by earthquakes, the source parameters can be recovered, i.e., the seismic moment (M0) and the stress drop (Δσ). LÄS MER

  4. 4. Dynamic Soil-Structure Interactionof Soil-Steel Composite Bridges : A Frequency Domain Approach Using PML Elements and Model Updating

    Master-uppsats, KTH/Bro- och stålbyggnad

    Författare :DIEGO FERNANDEZ BARRERO; [2019]
    Nyckelord :Dynamics; soil-steel bridges; soil-structure interaction; model updating; PML; particle swarm; corrugated steel plates; frequency domain assurance criteria; parallel computing 2;

    Sammanfattning : This master thesis covers the dynamic soil structure interaction of soil-steel culverts applyinga methodology based on the frequency domain response. At the first stage of this masterthesis, field tests were performed on one bridge using controlled excitation. LÄS MER

  5. 5. Domain similarity metrics for predicting transfer learning performance

    Master-uppsats, Linköpings universitet/Interaktiva och kognitiva system

    Författare :Jesper Bäck; [2019]
    Nyckelord :nlp.natural language processing; machine learning; transfer learning; similarity metrics; similarity; predict; performance;

    Sammanfattning : The lack of training data is a common problem in machine learning. One solution to thisproblem is to use transfer learning to remove or reduce the requirement of training data.Selecting datasets for transfer learning can be difficult however. LÄS MER