Sökning: "modellering"

Visar resultat 1 - 5 av 1779 uppsatser innehållade ordet modellering.

  1. 1. Utveckling av simuleringsmodell i COMSOL för att undersöka temperaturökning hos foster vid ultraljudsexponering

    Kandidat-uppsats, KTH/Medicinteknik och hälsosystem

    Författare :Sara Roempke Lindström; Moa Wåhlgren; [2022]
    Nyckelord :Ultrasound; COMSOL; heating; fetus; temperature elevation; Ultraljud; COMSOL; värmeeffekt; foster; temperaturökning;

    Sammanfattning : Ett foster har inte samma blodflöde och resistans mot förändringar i sin miljö som en vuxen människa har och kan vid små temperaturförändringar orsakas skada i till exempel den utvecklande hjärnan. Vid ultraljudsundersökning finns bevisat en viss värmeökning, men det råder ovisshet kring hur stor denna skulle kunna bli under en längre tids exponering av ultraljud. LÄS MER

  2. 2. Quantum mechanical modelling and electrochemical stability of sodium based glassy electrolyte for all-solid-state batteries

    Kandidat-uppsats, KTH/Materialvetenskap

    Författare :Carolina Falk; Linnéa Johansson; [2022]
    Nyckelord :Quantum mechanical modelling; solid state batteries; solid electrolyte; glassy electrolyte; density functional theory; electrochemical stability; Kvantmekanisk modellering; solida batterier; fast elektrolyt; elektrokemisk stabilitet;

    Sammanfattning : Increasing energy demand draws attention to new materials for improving current energy storage technologies. Particular interest is directed at solid state batteries and glass Na3ClO electrolyte is a promising candidate. LÄS MER

  3. 3. Supervised Machine Learning Modeling in Secondary Metallurgy : Predicting the Liquid Steel Temperature After the Vacuum Treatment Step of the Vacuum Tank Degasser

    Master-uppsats, KTH/Materialvetenskap

    Författare :Roberto Vita; [2022]
    Nyckelord :Industy 4.0; Machine Learning; Statistical Modeling; Temperature Prediction; Vacuum Tank Degasser; Vacuum Treatment Step.; Industri 4.0; Maskininlärning; Statistisk modellering; Temperaturförutsägelse; Vakuumbehandlingssteg; Vakuumtankavgasare;

    Sammanfattning : In recent years the steelmaking industry has been subjected to continuous attempts to improve its production route. The main goals has been to increase the competitiveness and to reduce the environmental impact. The development of predictive models has therefore been of crucial importance in order to achieve such optimization. LÄS MER

  4. 4. Evaluating an increased spill regime as a management tool to improve downstream passage of salmon smolt

    Master-uppsats, Karlstads universitet/Institutionen för miljö- och livsvetenskaper (from 2013)

    Författare :Mattias Hansson; [2022]
    Nyckelord :hydraulic modeling; hydroacoustic telemetry; time to event analysis; hydraulisk modellering; överlevnadsanalys; hydroakustisk telemetri;

    Sammanfattning : The anadromous Atlantic salmon (Salmo salar) is dependent on river connectivity to reach spawning and rearing habitats in rivers. Most rivers are today fragmented by artificial barriers such as hydroelectric powerplants (HEP) which impede this migratory movement. LÄS MER

  5. 5. A Deep Learning Based Approach to Object Recognition from LiDAR Data Along Swedish Railroads

    Master-uppsats, KTH/Fastigheter och byggande

    Författare :Egil Morast; [2022]
    Nyckelord :Deep learning; DGCNN; LiDAR; Object recognition; Railroad; Automatisation; Sweden; Point cloud; Djupinlärning; DGCNN; LiDAR; Objektigenkänning; Järnväg; Automatisering; Sverige; Punktmoln;

    Sammanfattning : Malfunction in the overhead contact line system is a common cause of disturbances in the train traffic in Sweden. Due to the preventive methods being inefficient, the Swedish Transport Administration has stated the need to develop the railroad maintenance services and has identified Artificial Intelligence (AI) as an important tool for this undertaking. LÄS MER