Sökning: "Event Tree"

Visar resultat 21 - 25 av 68 uppsatser innehållade orden Event Tree.

  1. 21. Using Graph Neural Networks for Track Classification and Time Determination of Primary Vertices in the ATLAS Experiment

    Master-uppsats, KTH/Matematisk statistik

    Författare :Mattias Gullstrand; Stefan Maraš; [2020]
    Nyckelord :Time determination; graph neural network; graph attentional network; HGTD; vertex; node classification; particle physics; machine learning; Tidsbestämning; neurala grafnätverk; uppvaktande grafnätverk; HGTD; vertex; nodklassificering; partikelfysik; statistisk inlärning;

    Sammanfattning : Starting in 2027, the high-luminosity Large Hadron Collider (HL-LHC) will begin operation and allow higher-precision measurements and searches for new physics processes between elementary particles. One central problem that arises in the ATLAS detector when reconstructing event information is to separate the rare and interesting hard scatter (HS) interactions from uninteresting pileup (PU) interactions in a spatially compact environment. LÄS MER

  3. 22. Transport av explosivt gods - Känner vi till riskerna?

    Master-uppsats, Lunds universitet/Riskhantering (CI); Lunds universitet/Avdelningen för Riskhantering och Samhällssäkerhet

    Författare :Felicia Rådne; [2020]
    Nyckelord :ADR klass 1; explosivt gods; explosiva ämnen och föremål; farligt gods; fordonsbrand; händelseträd; risk; riskanalys; trafikolycka; vägtransport; Technology and Engineering;

    Sammanfattning : The transport of dangerous goods is associated with the risk of accidents with potentially severe consequences. Therefore, risk analyses are performed before allowing for the exploitation of land near roads designated for the transportation of such goods. LÄS MER

  4. 23. Classification Tree Based Algorithms in Studying Predictors for Long-Term Unemployment in Early Adulthood : An Exploratory Analysis Combining Supervised Machine Learning and Administrative Register Data

    Master-uppsats, Linköpings universitet/Institutionen för ekonomisk och industriell utveckling; Linköpings universitet/Filosofiska fakulteten

    Författare :Sanni Kuikka; [2020]
    Nyckelord :long-term unemployment; life course research; register data; cohort study; supervised machine learning; CART; random forest;

    Sammanfattning : Unemployment at young age is a negative life event that has been found to have scarring effects for future life outcomes, especially when continuing long-term. Understanding precursors for long-term unemployment in early adulthood is important to be able to target policy interventions in critical junctures in the life course. LÄS MER

  5. 24. Impactites from the Hiawatha crater, North-West Greenland

    Master-uppsats, Stockholms universitet/Institutionen för geologiska vetenskaper

    Författare :Jacob Gustafsson; [2020]
    Nyckelord :Hiawatha; impact crater; Cape York; Baffin Bay; Greenland Ice Sheet; Younger Dryas; meteorite; impactite; organic carbon; conifer; vitrinite reflectance; Ro; cellular texture; chromite; chromium isotope; toasted quartz; ballen quartz; melted carbonate; granular zircon; planar deformation feature;

    Sammanfattning : The recent discovery of the 31-km-wide Hiawatha impact crater has raised unanswered questions about its age, impactor and highly unusual organic carbon component. Previous research suggests a fractionated iron meteorite impactor, a probable maximum 3–2.4 Ma impact age and a possible Younger Dryas impact age. LÄS MER

  7. 25. Methods for rockfall risk assessment and estimation of runout zones: A case study in Gothenburg, SW Sweden

    Master-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Laura Catalina Agudelo Motta; [2020]
    Nyckelord :Rockfall hazard; rockfall simulation; Gothenburg; Fjällbo; runout zones; Earth and Environmental Sciences;

    Sammanfattning : Rockfalls occur around Sweden every year and the country lacks a national risk evaluation and an adequate regulatory framework for construction related to this natural hazard. The aim of this study is to address this problem by mapping areas under possible threat of rockfalls, considering two fundamental aspects: i) identification of the source areas and ii) estimation of the runout zones. LÄS MER