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Visar resultat 1 - 5 av 17 uppsatser som matchar ovanstående sökkriterier.

  1. 1. Weather Factors and E. coli Concentration in Barnviken, Malmö - A Linear Mixed Model Approach

    Kandidat-uppsats, Lunds universitet/Statistiska institutionen

    Författare :Elias Gullberg; [2024]
    Nyckelord :Linear Mixed Models; Mathematics and Statistics;

    Sammanfattning : Barnviken in Malmö has persistently encountered challenges associated with elevated concentrations of Escherichia coli (E. coli) without a discernible source of contamination. LÄS MER

  3. 2. Inverse Atmospheric Dispersion Modeling in Complex Geometries

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

    Författare :Charlie Pelland; [2022]
    Nyckelord :atmospheric dispersion modeling; dispersion modeling; invers dispersion modeling; atmospheric dispersion; invers atmospheric dispersion; CFD; computational fluid dynamics; radioactive release; openfoam; CRBN; dry deposition; dry deposition velocity; scavenging effect; wet deposition; optimization model; Reynolds Averaged Navier-Stokes; adjoint mode; time-dependent rain simulation; time-dependent rain; time dependent rain simulation; time dependent rain;

    Sammanfattning : In the event of a radioactive release in an urban environment the consequent response mustbe swift and precise. As soon as first responders have correct information, they can make anaccurate risk assessment. However, if the position, release rate and time of the radioactiverelease is unknown it is hard to know how the pollutant will spread. LÄS MER

  4. 3. Sensitivity analysis of a generic urban flow model : 2D modelling with empirical hyetographs and CDS rain

    Master-uppsats, KTH/Hållbar utveckling, miljövetenskap och teknik

    Författare :Julia Granlund; [2022]
    Nyckelord :Input parameters; initial water content; antecedent moisture content; impervious surfaces; topography; empirical hyetographs; design storms;

    Sammanfattning : Severe flooding events in recent years have underlined the importance of accurate hydrological modelling in urban areas. There are many important parameters relating to both the rainfall distribution and properties of the land on which the rain falls that controls the impacts of the rain event. LÄS MER

  5. 4. Using Dynamic Double Machine Learning for Guided District Heating Forecasting and Physical Parameter Extraction

    Master-uppsats, Lunds universitet/Matematisk statistik

    Författare :Justinas Smertinas; [2022]
    Nyckelord :Double Machine Learning; Time Series; District Heating; ARMAX; Forecasting; Solar Gain; Diurnal Effects; Mathematics and Statistics;

    Sammanfattning : This thesis’ main goals were to provide accurate forecasts and informative physical parameter estimates for energy use of the district heating in the Tingbjerg neighborhood, Copenhagen. Our work is aimed as a contribution for future work towards efficient on-demand energy production. LÄS MER

  7. 5. Regional Rainfall Frequency Analysis

    Kandidat-uppsats, Stockholms universitet/Statistiska institutionen

    Författare :Olov Rudberg; Daniel Bezaatpour; [2020]
    Nyckelord :Statistics; Frequency Analysis; Probability Theory; Prediction Models; L-Moments; L-Moments Algorithm;

    Sammanfattning : Frequency analysis is a vital tool when nding a well-suited probability distributionin order to predict extreme rainfall. The regional frequency approach have beenused for determination of homogeneous regions, using 11 sites in Skane, Sweden. LÄS MER