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Visar resultat 21 - 25 av 156 avhandlingar som matchar ovanstående sökkriterier.

  1. 21. Deep Learning for Wildfire Progression Monitoring Using SAR and Optical Satellite Image Time Series

    Författare :Puzhao Zhang; Yifang Ban; Lorenzo Burzzone; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Remote Sensing; Deep Learning; Wildfire; Burned Area Mapping; Synthetic Aperture Radar; Change Detection; Segmentation; Optical and Radar Image Analysis; Sentinel-1; Sentinel-2; fjärranalys; djup inlärning; skogsbrand; kartläggning av brända områden; Synthetic Aperture Radar; upptäckt av förändringar; segmentering; analys av optiska och radarbilder; Sentinel-1; Sentinel-2; Geoinformatik; Geoinformatics;

    Sammanfattning : Wildfires have coexisted with human societies for more than 350 million years, always playing an important role in affecting the Earth's surface and climate. Across the globe, wildfires are becoming larger, more frequent, and longer-duration, and tend to be more destructive both in lives lost and economic costs, because of climate change and human activities. LÄS MER

  3. 22. Micro- and Nanostructures for Studies of Model Biological Systems

    Författare :Cassandra Niman; Fasta tillståndets fysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Fysicumarkivet A:2014:Niman;

    Sammanfattning : Sub-cellular biological components are complex systems that work together to control and maintain cellular activity and health. It is useful to study the basic elements that constitute the sub-cellular components using model systems, which mimic certain parts of the overall system, in order to better understand the system as a whole. LÄS MER

  4. 23. Autonomous bridge inspection based on a generated digital model

    Författare :Ali Mirzazade; Björn Täljsten; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Byggkonstruktion; Structural Engineering;

    Sammanfattning : Railway owners manage geographically dispersed networks comprising major elements of ageing infrastructure that are very susceptible to natural hazards. Consequently, transport agencies must address maintenance issues to guarantee serviceability and safety. LÄS MER

  5. 24. Density functional calculations of optical spectra and narrow band systems

    Författare :Anna Delin; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; Fysik; Physics; Fysik; Fysik; Physics;

    Sammanfattning : A calculational method, based on density functionaltheory, has been used to calculate optica spectra for a wide range of systems,as well as ground-state properties of some narrow-band systems. A systematic study of the trends in the optical properties of the 4Brefractory metal compounds has been performed. LÄS MER

  7. 25. Light propagation and photonic functionalization of semi-ordered material (transparent wood)

    Författare :Adil Baitenov; Sergei Popov; Sergey Ponomarenko; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; light scattering; scattering material; hierarchical structure; FEM model; wood modification; random lasers; dye lasers; transparent wood; adsorption; diffusive media; Optics and Photonics; Optik och fotonik;

    Sammanfattning : Investigating novel materials requires understanding their chemical and optical properties, which allows for finding their uses through functionalization by chemical modification. In this thesis, we are focusing on a material with high anisotropic scattering - transparent wood. LÄS MER