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Visar resultat 1 - 5 av 10 uppsatser som matchar ovanstående sökkriterier.

  1. 1. Land cover classification using machine-learning techniques applied to fused multi-modal satellite imagery and time series data

    Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Anastasia Sarelli; [2024]
    Nyckelord :Geography; GIS; Land Cover Classification; Landsat; Machine Learning; Earth and Environmental Sciences;

    Sammanfattning : Land cover classification is one of the most studied topics in the field of remote sensing, involving the use of data from satellite sensors to analyze and categorize different land surface types. There are numerous satellite products available, each offering different spatial, spectral, and temporal resolutions. LÄS MER

  3. 2. Attenuation of bending waves in cross-laminated timber panels by using constrained damping layer

    Master-uppsats, Luleå tekniska universitet/Träteknik

    Författare :Konrad Boeske; [2021]
    Nyckelord :Wood technology; damping; CLT; acoustic; low frequencies; AkuTimber;

    Sammanfattning : Multi-storey wooden buildings become more and more popular. As the new housing solutions are more accessible, acoustical inconveniences of wooden buildings become actual as never before. Wood, thanks to its high stiffness and low mass, allows to erect buildings at impressive pace, albeit cannot damp low frequency noises efficiently. LÄS MER

  4. 3. Transient and Spectral Fatigue Analysis for Random Base Excitation

    H-uppsats,

    Författare :Albin Bäckstrand; Prithviraj Madhava Acharya; [2019-09-16]
    Nyckelord :Spectral fatigue analysis; transient fatigue analysis; power spectral density PSD ; transfer function; base excitation; Dirlik s empirical formula; equivalent von Mises stress EVMS ; rainflow count; Wang and Brown s method; Dang Van equivalent stress; Palmgren-Miner rule;

    Sammanfattning : This thesis work gives an insight on how to estimate the fatigue damage using transient and spectral fatigue analysis for both uniaxial and multiaxial stress states in case of random vibration base excitation. The transient method involves a rainflow count algorithm that counts the number of cycles causing the fatigue damage, while the spectral method is based on probabilistic assumptions from which an expected value of fatigue damage can be estimated. LÄS MER

  5. 4. Method Development and Analysis of Tensile Stresses in Windscreens : A study on the dynamic stresses on windscreens subjected to random vibrations.

    Master-uppsats, Högskolan i Jönköping/Tekniska Högskolan

    Författare :Philip Reis; Karthik Murthy; [2018]
    Nyckelord :Dynamic Stresses; FE Method; Laminated Glass; Modal Analysis; Random Vibration; Windscreens;

    Sammanfattning : The thesis work deals with the study and determination of static and dynamic stresses acting on windscreen structures during transportation from the manufacturing site to the production plant. To simulate the stress distribution affected by the transportation, a finite element model of the windscreen is development of the structure and tested. LÄS MER

  7. 5. Petrological characterization of the Cambrian sandstone reservoirs in the Baltic Basin, Sweden

    Master-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Tawonga Chitindingu; [2018]
    Nyckelord :Cambrian; Baltic Basin; porosity; permeability; quartz; cement; Earth and Environmental Sciences;

    Sammanfattning : The Cambrian sandstone reservoirs of the Baltic Basin have been identified by the Geological Survey of Sweden (SGU) as potential CO2 storage sites in line with regulations regarding Carbon Capture and Storage (CCS). In order to understand the petrological and petrophysical characteristics of the sandstone units, 54 thin sections from the three main Cambrian sandstone units were studied. LÄS MER