Sökning: "gamma distribution"

Visar resultat 1 - 5 av 84 uppsatser innehållade orden gamma distribution.

  1. 1. Evaluating aperture shape controller (ASC) in modulated radiation treatments

    Master-uppsats,

    Författare :Vilma Andrén Cederholm; [2023-09-28]
    Nyckelord :Medical physics;

    Sammanfattning : To decrease aperture complexity, the aperture shape controller (ASC) is a recently introduced function in Eclipse external beam planning (Varian Medical Systems, Palo Alto, USA). ASC works within the photon optimizer, minimizing distances between adjacent leaf tips of the MLC. LÄS MER

  3. 2. Polymer gel dosimetry with MRI-readout for 3D dose verification - detector characteristics and clinical applications

    Master-uppsats, Lunds universitet/Sjukhusfysikerutbildningen

    Författare :Thi Guldhill; [2023]
    Nyckelord :Medicine and Health Sciences;

    Sammanfattning : Background & Purpose: Radiation therapy is an essential treatment for cancer patients with the ultimate goal to deliver radiation doses to the tumour with precision while minimizing exposure to surrounding healthy tissues. Treatment verification is crucial to ensure the accuracy of radiation delivery, for instance by measuring the radiation dose distribution. LÄS MER

  4. 3. A Framework to Model Bond Liquidity

    Master-uppsats, KTH/Matematik (Avd.)

    Författare :Alan Issa; [2023]
    Nyckelord :Bonds; liquidity; order book; stochastic process; stationarity; gamma distribution.; Obligationer; likviditet; orderbok; stokastisk process; stationaritet; gamma distribution.;

    Sammanfattning : The liquidity of financial assets can be studied in various different ways. In this thesis, liquidity is defined as the cost and time required to liquidate a position. LÄS MER

  5. 4. Parameter Stability in Additive Normal Tempered Stable Processes for Equity Derivatives

    Master-uppsats, Mälardalens universitet/Akademin för utbildning, kultur och kommunikation

    Författare :Eduardo Alberto Alcantara Martinez; [2023]
    Nyckelord :Parameter Stability; Lévy Processes; Calibration; Volatility Surface; Subordination; Additive Normal Tempered Stable Processes; Stable Distribution; Variance Gamma Process; Normal Inverse Gaussian Process.;

    Sammanfattning : This thesis focuses on the parameter stability of additive normal tempered stable processes when calibrating a volatility surface. The studied processes arise as a generalization of Lévy normal tempered stable processes, and their main characteristic are their time-dependent parameters. LÄS MER

  7. 5. Economic Capital Models : Methods for fitting loss distributions

    Uppsats för yrkesexamina på avancerad nivå, Umeå universitet/Institutionen för matematik och matematisk statistik

    Författare :William Fritzell; [2023]
    Nyckelord :Economic Capital; Distribution fitting; MCMC;

    Sammanfattning : The thesis provides a well-researched classical approach to fit and predict the losses (extreme) for Lloyds Bank’s Dutch mortgage portfolio, their defaulted Dutch mortgage portfolio, and their German personal and car loan portfolio. This is a crucial piece for quantification of the economic loss, required for effective credit risk management by the Bank. LÄS MER