Sökning: "snapshots"

Visar resultat 1 - 5 av 30 uppsatser innehållade ordet snapshots.

  1. 1. Dispersion management and characterization of ultrashort laser pulses for the optimization of parametric processes

    Master-uppsats, Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

    Författare :Axel Elfving; [2019]
    Nyckelord :frequency resolved optical gating; optical parametric amplification; difference frequency generation; nonlinear optics; laser pulse compression; lasers; optics; Technology and Engineering; Physics and Astronomy;

    Sammanfattning : This thesis set out to continue the development of a short-wave infrared (SWIR) optical parametric amplifier (OPA). The system is based on a Yb-ber chirped pulse amplification (CPA) laser delivering 400 fs long pulses, centered around 1030 nm, at 200 kHz repetition rate and 40 W average power. LÄS MER

  2. 2. Identification of Neutrons Using Digitized Waveforms

    Master-uppsats, Lunds universitet/Kärnfysik; Lunds universitet/Fysiska institutionen

    Författare :Rasmus Kjær Høier; [2019]
    Nyckelord :Digitizer; neutron; gamma-ray; pulse-shape discrimination; CNN; convolutional neural network; charge comparison; time of flight; source-testing facility; STF; Physics and Astronomy;

    Sammanfattning : The advantages of performing neutron-tagging measurements using a waveform digitizer are explored. An existing analog setup consisting of modular crate electronics at the Source-Testing Facility at the Division of Nuclear Physics in Lund, Sweden has been digitally replicated. LÄS MER

  3. 3. Optimizing Bike Sharing System Flows using Graph Mining, Convolutional and Recurrent Neural Networks

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Davor Ljubenkov; [2019]
    Nyckelord :Data Science; Data Visualization; Bike-Sharing Systems; Graph Mining; Time Series Prediction; Machine Learning; Deep Learning; Recurrent Neural networks; Convolutional Neural Networks; Shareable Cities; Urban Informatics;

    Sammanfattning : A Bicycle-sharing system (BSS) is a popular service scheme deployed in cities of different sizes around the world. Although docked bike systems are its most popular model used, it still experiences a number of weaknesses that could be optimized by investigating bike sharing network properties and evolution of obtained patterns. LÄS MER

  4. 4. Fenomenet sommartorkan 2018 i ögonblicksbilder : En kvantitativ innehållsstudie om sommartorkan 2018

    Kandidat-uppsats, Linnéuniversitetet/Institutionen för medier och journalistik (MJ); Linnéuniversitetet/Institutionen för medier och journalistik (MJ)

    Författare :Nathalié Nylander; Ebba Ripheden; [2019]
    Nyckelord :Media; Newspaper; Social media; Summer drought;

    Sammanfattning : The aim of this study was to examine pictures from the swedish morning newspaper Barometern regarding their publication about the summer drought 2018 on two of theirplatforms; the ordinary printed newspaper and their Instagram account. The purpose of the study was to track down if there were any obvious differences aboutthe pictures that Barometern publishes in their printed newspaper and Instagramaccount. LÄS MER

  5. 5. A Topological analysis of an alternative to the PageRank algorithm in weighted directed graphs

    Master-uppsats, KTH/Matematik (Inst.)

    Författare :Natalia Andrea Londono Castrillon; [2019]
    Nyckelord :;

    Sammanfattning : In this thesis I use seven data-sets of weighted, directed graphs and present them as weighted, directed k-simplicial complexes. Then, I analyse the topological properties of each data-set in question using Flagser by \cite{flagser} and the cluster at the TU Darmstadt. I then proceed to run two versions of an alternative to the PageRank algorithm. LÄS MER