Sökning: "Gradient"

Visar resultat 1 - 5 av 639 uppsatser innehållade ordet Gradient.

  1. 1. Greenhoue gas flux over a 50-year post permafrost thaw gradient. Decomposition of soil organic carbon from the Swedish tussock tundra.

    Master-uppsats, Göteborgs universitet/Institutionen för geovetenskaper

    Författare :Johan Martinelli; [2020-02-11]
    Nyckelord :greenhouse gas; permafrost;

    Sammanfattning : As the globe is warming the extent of permafrost drastically decreases in the high latitudes. Upon thawthe stored soil organic carbon (SOC) undergoes rapid decomposition and is partly released as trace gasesto the atmosphere. LÄS MER

  2. 2. Sentimentanalys av svenskt aktieforum för att förutspå aktierörelse

    Uppsats för yrkesexamina på grundnivå, KTH/Medicinteknik och hälsosystem; KTH/Medicinteknik och hälsosystem

    Författare :Michel Sebastian Ouadria; Ann-Stephanie Ciobanu; [2020]
    Nyckelord :Sentiment analysis; Stock market; Machine Learning; Support Vector Machine; Naive Bayes; Extreme Gradient Boosting; Sentimentanalys; Aktiemarknad; Maskininlärning; Stödvektormaskin; Naive Bayes; Extreme Gradient Boosting;

    Sammanfattning : Förevarande studie undersöker möjligheten att förutsäga aktierörelse på en dagligbasis med sentimentanalys av inlägg från ett svenskt aktieforum. Sentimentanalys används för att finna subjektivitet i form av känslor (sentiment) ur text. LÄS MER

  3. 3. Monitoring and Modelling of the Abiskojåkka Bridge

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Byggkonstruktion och brand

    Författare :Kasper Furenstam; [2020]
    Nyckelord :Prestressed bridge; Abisko; Monitoring; thermal effects; FEM;

    Sammanfattning : The infrastructure of today is getting older and problems caused by deterioration over time is affecting the service life of these structures. In Sweden most of the existing bridges were constructed 60 to 70 years ago, rising the need to determine the state of health of the bridges as the maintenance costs will increase heavily. LÄS MER

  4. 4. BLE Beacon Based Indoor Positioning System in an Office Building using Machine Learning

    Master-uppsats, Blekinge Tekniska Högskola/Institutionen för datavetenskap

    Författare :Rohan Reddy Tirumalareddy; [2020]
    Nyckelord :Indoor Positioning System; Fingerprinting; Machine Learning; Bluetooth Low Energy;

    Sammanfattning : Context: Indoor positioning systems have become more widespread over the past decade, mainly due to devices such as Bluetooth Low Energy beacons which are low at cost and work effectively. The context of this thesis is to localize and help people navigate to the office equipment, meeting rooms, etc. LÄS MER

  5. 5. Tree-based Machine Learning Models with Applications in Insurance Frequency Modelling

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

    Författare :Samuel Tober; [2020]
    Nyckelord :;

    Sammanfattning : As the insurance industry is highly data driven it is no surprise that machine learning (ML) has made its way into the industry. While GLMs are still the comfort zone of most actuaries, we have in recent years seen a surge in machine learning algorithms. LÄS MER