Sökning: "Inverse"

Visar resultat 1 - 5 av 540 uppsatser innehållade ordet Inverse.

  1. 1. Local Voltage Control in Converter Based PV Generation

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Industriell elektroteknik och automation

    Författare :Charlotta Sporre; [2024]
    Nyckelord :distributed generation; active network management; low voltage distribution network; delta control; voltage control; Technology and Engineering;

    Sammanfattning : As the world is trying to rid itself of its dependence on fossil fuels, the need for renewable energy is rapidly increasing. In the power distribution network (DN), this takes the form of distributed generation (DG) from renewable sources, such as photovoltaic (PV) power production. LÄS MER

  3. 2. Modeling wave behavior with linear wave theory

    Uppsats för yrkesexamina på avancerad nivå, Umeå universitet/Institutionen för fysik

    Författare :Elsa Renström; [2024]
    Nyckelord :;

    Sammanfattning : This thesis aimed to look at the behaviours of the water beneath waves from a modeling and simulations point of view. We have investigated how to use Linear wave theory (LWT) to model the kinematic movements in water governed by free ocean waves. The model assumes the surface to consist of a superposition of sinusoidal waves. LÄS MER

  4. 3. Cash Holdings, Secured Debt and Collateral

    Magister-uppsats, Lunds universitet/Företagsekonomiska institutionen

    Författare :Anton Wihlborg; Philip Dahl; [2023]
    Nyckelord :Corporate Cash Holdings; Secured Debt; Unencumbered Tangibility; Precautionary Motive; Financial Constraints; Business and Economics;

    Sammanfattning : The purpose of this study is to empirically investigate the relationship between unencumbered tangibility and cash holdings, and to evaluate if corporations consider them to be substitutable variables of corporate liquidity. The study relies on a panel data set and then employs a firm fixed effect regression model to estimate the strength and direction of the relationship of interest. LÄS MER

  5. 4. Limited angle reconstruction for 2D CT based on machine learning

    Kandidat-uppsats, KTH/Skolan för teknikvetenskap (SCI)

    Författare :Eric Oldgren; Knut Salomonsson; [2023]
    Nyckelord :CT; computed tomography; limited angle; machine learning; limited data; ill posed problem; inverse problem;

    Sammanfattning : The aim of this report is to study how machine learning can be used to reconstruct 2 dimensional computed tomography images from limited angle data. This could be used in a variety of applications where either the space or timeavailable for the CT scan limits the acquired data.In this study, three different types of models are considered. LÄS MER

  7. 5. Where there is road, there is fire (influence): An exploratory study on the influence of roads in the spatial patterns of Swedish wildfires of 2018

    Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Gabriel Romeo Ferriols Pavico; [2023]
    Nyckelord :Geography; GIS; Wildfire; Fire Spatial Patterns; Road; Conformity; FWI; Earth and Environmental Sciences;

    Sammanfattning : This study focuses on the Swedish wildfire season of 2018, when the country incurred ten times more than the average burnt area that occurred in previous years. The study aims to address a broad research question: Do roads influence the size of the burned area? This study fills the gap in research on the effects of roads in the spatial patterns of wildfires. LÄS MER