Sökning: "database optimization"

Visar resultat 6 - 10 av 108 uppsatser innehållade orden database optimization.

  1. 6. Hydrogen storage systems : Methodology and model development for hydrogen storage systems performance evaluation based on a transient thermodynamic approach

    Master-uppsats, Mälardalens universitet/Akademin för ekonomi, samhälle och teknik

    Författare :Kreshnik Margaritari; [2023]
    Nyckelord :Hydrogen; Hydrogen storage system; Hydrogen filling process; Hydrogen storage system operation; Hydrogen storage system design; Hydrogen fast filling; Hydrogen tank modelling;

    Sammanfattning : The overall performance of a hydrogen storage system can be affected by various parameters, such as operation and design parameters, but also by the state of the hydrogen contained inside the storage tanks. In this work, a methodology is developed to evaluate the state of the hydrogen during the filling process and its impact on the overall system performance under variable operation conditions and design parameters. LÄS MER

  3. 7. Finding the QRS Complex in a Sampled ECG Signal Using AI Methods

    Master-uppsats, KTH/Fysik

    Författare :Jeanette Marie Victoria Skeppland Hole; [2023]
    Nyckelord :ECG; ECG-analysis; QRS detector; Artificial Intelligence; Machine Learning; Deep neural networks; Long short-term memory; Convolutional neural network; Multilayer perceptron; EKG; EKG-analys; QRS detektor; Artificiell intelligens; Maskininlärning; Djupa neurala nätverk; Long short-term memory; Convolutional neural network; Multilayer perceptron;

    Sammanfattning : This study aimed to explore the application of artificial intelligence (AI) and machine learning (ML) techniques in implementing a QRS detector forambulatory electrocardiography (ECG) monitoring devices. Three ML models, namely long short-term memory (LSTM), convolutional neural network (CNN), and multilayer perceptron (MLP), were compared and evaluated using the MIT-BIH arrhythmia database (MITDB) and the MIT-BIH noise stress test database (NSTDB). LÄS MER

  4. 8. Implications of Analytics and Visualization of Torque Tightening Process Data on Decision Making : An automotive perspective

    Master-uppsats, KTH/Produktionsutveckling

    Författare :Nikhil Thomas; [2023]
    Nyckelord :Torque tightening; Digitalization; Data Analytics; Visualization; Momentåtdragning; Digitalisering; Dataanalys; Visualisering;

    Sammanfattning : In recent years, there is an increased focus on integrating digital technologies in industrial processes, also termed ”Industry 4.0”. Out of the many challenges for the transition, one is to understand how to find useful insights from data collected over large periods of time, predominantly in industrial IT systems. LÄS MER

  5. 9. Thermodynamic modelling of the copper-zinc-tin ternary system : A study towards lead-free brass

    Master-uppsats, KTH/Materialvetenskap

    Författare :Caterina Radogna; [2023]
    Nyckelord :Brass-based alloys; Lead-free brass; Calphad; Thermo-Calc; Thermodynamic description; Mässingsbaserade legeringar; Blyfri mässing; Calphad; Thermo-Calc; Termodynamisk beskrivning;

    Sammanfattning : Lead (Pb) is frequently used as an alloying element in brass to enhance machinability and castability. However, this element poses a significant risk to human health and the environment. The 2021 revision of the Drinking Water Directive imposed stricter limits on Pb content in brass, encouraging the development of lead-free brass. LÄS MER

  7. 10. Optimering av Tidrapportering genom Systemintegration : En Integrationslösning mellan Jira och Agresso

    Kandidat-uppsats, Karlstads universitet/Institutionen för matematik och datavetenskap (from 2013)

    Författare :Linus Pernius; Carl Pettersson; [2023]
    Nyckelord :Datavetenskap; Systemintegration; Integration; Tidrapportering;

    Sammanfattning : Ett konsultföretag är ett företag som tillhandahåller expertis och specialiserad arbetskraft, inom specifika arbetsområden, mot en avgift. De anställda på ett sådant bolag kallas för konsulter och deras arbetsuppgift är att jobba på uppdrag av en eller flera kunder. LÄS MER