Sökning: "ultra sound"

Visar resultat 1 - 5 av 19 uppsatser innehållade orden ultra sound.

  1. 1. Microstructures and Compressive Strength of Lake Ice in Sweden A structural Documentation and Compressive Strength Analysis of Lake Ice Cores from Uppsala, using the SonReb Method

    Master-uppsats, Göteborgs universitet/Institutionen för geovetenskaper

    Författare :Julia Ladefoged; [2023-08-18]
    Nyckelord :;

    Sammanfattning : Lake ice have been utilized by humans through centuries, as transportation routes and recreational activities to name a few (Sharma et al., 2019). Despite our frequent usage of lake ice there is a lack of extensive knowledge of it. LÄS MER

  3. 2. Mät och reglerproblem liners

    Uppsats för yrkesexamina på grundnivå, Mittuniversitetet/Institutionen för elektronikkonstruktion

    Författare :Björn Svensson; [2021]
    Nyckelord :Automation; industrial; process; Inpipe; liners; measurement; ultra-sound; laser; optical; sensor; regulation; feed forward.; Automation; avståndsgivare; ultraljud; optik; laser; sensor; liner; In-pipe; mätproblem; reglering; framkoppling;

    Sammanfattning : Inpipes produktion av liners sker idag till stor del manuellt. I syfte att minska variansen på produktkvalitet, råvaror och öka processens hastighet undersöktes möjligheterna att elektroniskt mäta utbuktningarna som uppstod i processen. Därefter undersöktes processens egenskaper inför att använda mätvärdena i en passande reglerstruktur. LÄS MER

  4. 3. Enhancing the Decoding of Short LDPC Codes with Stochastic Sequences

    Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknik

    Författare :Yuyuan Gu; Haien Li; [2021]
    Nyckelord :5G; channel coding; LDPC codes; stochastic decoding; stochastic computation; Technology and Engineering;

    Sammanfattning : Low-Density Parity-Check (LDPC) codes are one of the most popular codes used in nowadays’ communication due to their high coding efficiency at low decoding complexity. With these characteristics, LDPC codes are suitable for high-speed information transmission systems. LÄS MER

  5. 4. Image analysis tool for geometric variations of the jugular veins in ultrasonic sequences : Development and evaluation

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Avdelningen för visuell information och interaktion

    Författare :Arvid Westlund; [2018]
    Nyckelord :active contour; ultra sound; ultrasonic; image analysis; internal jugular veins; snake;

    Sammanfattning : The aim of this project is to develop and perform a first evaluation of a software, based on the active contour, which automatically computes the cross-section area of the internal jugular veins through a sequence of 90 ultrasound images. The software is intended to be useful in future research in the field of intra cranial pressure and its associated diseases. LÄS MER

  7. 5. Near-local density approximation approach to one-dimensional lattice systems

    Kandidat-uppsats, Lunds universitet/Matematisk fysik; Lunds universitet/Fysiska institutionen

    Författare :Basheer Joudeh; [2018]
    Nyckelord :DFT; Hartree; Hartree-Fock; LDA; BALDA; Mean-field; Hubbard; SOFT; Physics and Astronomy;

    Sammanfattning : Describing many-body quantum systems has been an analytically and computationally challenging task since the advent of quantum mechanics. However, in the past 50 years as a result of our technological advancement and the emergence of methods such as density-functional theory (DFT), we have taken crucial steps forward regarding our ability to study and understand large quantum systems. LÄS MER