Sökning: "controlled experiment"

Visar resultat 1 - 5 av 332 uppsatser innehållade orden controlled experiment.

  1. 1. Uranium nitride synthesis by gas/gas reaction of UF6 and NH3

    Master-uppsats, KTH/Fysik

    Författare :Serena Ambrosino; [2024]
    Nyckelord :Uranium nitride; synthesis; ammonolysis; uranium hexafluoride; uranium tetrafluoride; ammonia; X-ray diffraction; microscopy; Urannitrid; syntes; ammonolys; uranhexafluorid; urantetrafluorid; ammoniak; röntgendiffraktion; mikroskopi;

    Sammanfattning : This thesis project aims to develop an innovative technique for the production of high-purity uranium nitride (UN) through the ammonolysis of fluorides. The desired objective is to perform a controlled gas/gas reaction between uranium hexafluoride (UF6) and ammonia (NH3) at 800°C. LÄS MER

  3. 2. The Impact of Soft-Close Auctions on Bid Behavior: A Randomised Controlled Experiment

    Master-uppsats, Göteborgs universitet/Graduate School

    Författare :Martin Kellgren; [2023-10-10]
    Nyckelord :Online Auctions; soft-close auctions; longer extension; randomised controlled experiment; private value; common value; seller’s revenue;

    Sammanfattning : This thesis studies the effect of longer extensions on bidding behaviour in online auctions. The study uses a randomised controlled experiment through Pantbanken Sverige, a Swedish pawnbroker. The results indicate positive effects on the seller’s revenue due to longer extensions, although these effects were not statistically significant. LÄS MER

  4. 3. Optimising Machine Learning Models for Imbalanced Swedish Text Financial Datasets: A Study on Receipt Classification : Exploring Balancing Methods, Naive Bayes Algorithms, and Performance Tradeoffs

    Kandidat-uppsats, Linnéuniversitetet/Institutionen för datavetenskap och medieteknik (DM)

    Författare :Li Ang Hu; Long Ma; [2023]
    Nyckelord :Imbalanced datasets; Swedish text financial datasets; Accuracy; Matthews correlation coefficient; Recall; Multinomial Naive Bayes; SMOTE; TomekLinks; Performance optimization;

    Sammanfattning : This thesis investigates imbalanced Swedish text financial datasets, specifically receipt classification using machine learning models. The study explores the effectiveness of under-sampling and over-sampling methods for Naive Bayes algorithms, collaborating with Fortnox for a controlled experiment. LÄS MER

  5. 4. Performance comparison of distributed MySQL andMongoDB in a cloud environment

    Kandidat-uppsats, Blekinge Tekniska Högskola/Institutionen för programvaruteknik

    Författare :Viktor Ljungdahl; [2023]
    Nyckelord :;

    Sammanfattning : Context: Comparing MongoDB and MySQL performance in the cloud is useful for developerswhen deciding which database to use based on cost, performance, workload size, and composition.As cloud computing becomes more popular, developers must consider the scalability, availability,and ease of use of these platforms when selecting a database. LÄS MER

  7. 5. Evaluation of different block-copolymer coatings of iron oxide nanoparticles by flash nanoprecipitation

    Master-uppsats, KTH/Fiber- och polymerteknologi

    Författare :Felix Bogdan; [2023]
    Nyckelord :Nanopartiklar; organisk katalysator; ROP; block-sampolymerer PL G A; oljesyra IONPs; Nanoparticles; organic catalyst; ROP; block-copolymers PL G A; oleic acid IONPs;

    Sammanfattning : Nanopartiklar (NP) erbjuder unika möjligheter för medicinska tillämpningar, inklusive kontrollerad frisättning av cancerläkemedel, användning som bildkontrast vid avbildningsprocedurer eller hypertermisk behandling av cancerceller. Flash nanoprecipitation (FNP) producerar NPs för att kombinera dessa tillämpningar i en snabb, billig och skalbar beläggningsprocess. LÄS MER