Sökning: "Uncertainty and variability"

Visar resultat 1 - 5 av 59 uppsatser innehållade orden Uncertainty and variability.

  1. 1. Uncertainty Estimation in Radiation Dose Prediction U-Net

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Frida Skarf; [2023]
    Nyckelord :Radiation dose prediction models; U-net; quantile regression; Monte Carlo Dropout; epistemic uncertainty estimation; aleatoric uncertainty estimation; Stråldospredicerande modeller; U-net; kvantilregression; Monte Carlo Dropout; epistemisk osäkerhetsskattning; aletorisk osäkerhetsskattning;

    Sammanfattning : The ability to quantify uncertainties associated with neural network predictions is crucial when they are relied upon in decision-making processes, especially in safety-critical applications like radiation therapy. In this paper, a single-model estimator of both epistemic and aleatoric uncertainties in a regression 3D U-net used for radiation dose prediction is presented. LÄS MER

  2. 2. Impact of Covid-19 on students' financial asset allocation: A Jönköping University study : Quantitative research study on students’ attending Jönköping University financial asset allocation prior and post Covid-19 with different risk attitudes.

    Magister-uppsats, Jönköping University/IHH, Företagsekonomi

    Författare :Axel Koch; [2023]
    Nyckelord :Financial asset allocation; Risk-averse; risk-neutral risk-preference; economic uncertainty; Market fluctuations; Expected utility theory.;

    Sammanfattning : Background: Since the emergence of Covid-19 has it reaped and created havoc within every segment of society on a national and global scale. The financial market experienced significant declines and losses but some asset items handled the fluctuations better than others. LÄS MER

  3. 3. Exploring patterns in risk factors for bark beetle attack during outbreaks triggered by drought stress with harvester data on attacked trees: A case study in Southeastern Sweden

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

    Författare :Nikolaos Kouskoulis; [2023]
    Nyckelord :Geography; GIS; Geographic Information Science; Forest ecosystems; Bark beetle outbreak; Southeastern Sweden; Predisposing factors; Triggering factors; Drought stress; Earth and Environmental Sciences;

    Sammanfattning : ABSTRACT Raising temperatures and climate variability have intensified extreme weather events worldwide. These extremes can enhance and trigger possible pest outbreaks. Bark beetle attacks have become a major concern in regions with extensive spruce forest areas. Southeastern Sweden has faced repeated outbreaks resulting in widespread tree loss. LÄS MER

  4. 4. Overstock of aftermarket parts in Africa at Sandvik Stationary Crushing and Screening

    Master-uppsats, Lunds universitet/Produktionsekonomi

    Författare :Mattias Johannesson; [2023]
    Nyckelord :Inventory management; Overstock; Excessive inventory; Obsolete inventory; Redistribution; Technology and Engineering;

    Sammanfattning : Title: Overstock of aftermarket parts in Africa at Sandvik Stationary Crushing and Screening Author: Mattias Johannesson Supervisor: Fredrik Olsson, Division of Production Management Background: An increase of customer expectations such as demand for more customizable options, shorter lead times and availability puts more and more pressure on a company's logistical processes. With fluctuating demand, inconsistent lead times and uncertainty around the world, variability is present and adds complexity to the logistical processes and needs to be handled appropriately to lower costs and match supply and demand. LÄS MER

  5. 5. Faktorer som påverkar blekning av cellulosa : En dataanalys vid bioraffinaderiet Domsjö Fabriker AB

    Master-uppsats, Umeå universitet/Institutionen för matematik och matematisk statistik

    Författare :Joe Lindehag; [2023]
    Nyckelord :pulp; biorefinery; statistics; data analysis; Cellulosa; bioraffinaderi; statistik; dataanalys;

    Sammanfattning : Domsjö Fabriker AB har under en tid haft en stigande vattenförbrukning utan att kunna peka på någon bidragande faktor. Som ett led i denna utredning har en dataanalys över blekeriet med fokus på variabeln Chemical Oxygen Demand (COD) genomförts. LÄS MER