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Visar resultat 16 - 20 av 679 uppsatser som matchar ovanstående sökkriterier.

1. 16. Investigation of Antenna Radomes in Low Earth Orbits

   Master-uppsats, Lunds universitet/Centrum för analys och syntes

   Författare :Mathias Manohar Gren; [2023]
   Nyckelord :Materials; Science; Space; Satellites; Antenna Radomes; Beyond Gravity; Coatings; Physics; Chemistry; Low Earth Orbits; Engineering; Lunds University; Materials Chemistry; Technology and Engineering;

   Sammanfattning : Introduction: This master’s thesis focuses on exploring improved alternative material solutions for antenna radomes used to protect Beyond Gravity Sweden’s satellite antennas in low Earth orbits. Background: As the environment in low Earth orbit is harsh, surface materials on satellites experience high levels of atomic oxygen, ultra violet radiation, thermal-fluctuation, charged particles and micro meteoroids. LÄS MER

3. 17. Childish Shelf - New purpose, no new purchase

   Kandidat-uppsats, Lunds universitet/Industridesign

   Författare :Signe Carlsson; [2023]
   Nyckelord :Arts and Architecture; Technology and Engineering;

   Sammanfattning : This project is aiming towards designing to extend the lifespan of children’s belongings to reduce excessive owning and over consumption amongst parents. Today, there is an issue of parents of small children needing to own many of the same products that they often need to replace and exchange as the child grows older. LÄS MER

4. 18. Estimating Ambient Temperature using Internal Sensors and Thermal Modelling in Mobile Phones

   Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Institutionen för reglerteknik

   Författare :Isak Evaldsson; Henrik Paulcén; [2023]
   Nyckelord :Technology and Engineering;

   Sammanfattning : This thesis studies the possibility of estimating the ambient temperature around a mobile phone using its internal temperature sensors. The thesis aims to develop and evaluate ambient temperature models that use internal temperature sensors within the device and, from a manufacturer’s perspective, investigate if the models for ambient temperature can be enhanced by tailoring them to the internals of specific devices. LÄS MER

5. 19. Exploration of Alternative Image Representation Using Signed Distance Functions

   Master-uppsats, Lunds universitet/Institutionen för designvetenskaper

   Författare :Jakub Olejnik; [2023]
   Nyckelord :computer graphics; SDF-based rendering; machine learning; Technology and Engineering;

   Sammanfattning : This project leverages the core concepts of differentiable rendering to find alternative representation of images using geometric primitives rendered with Signed Distance Functions. By utilising gradient-descent-based methods it is possible to find optimal parameters of rendered primitives to create high-quality reconstruction. LÄS MER

7. 20. Methods for determining focal point and delay for ultrasound arrays and multichannel electronics

   Master-uppsats, Lunds universitet/Avdelningen för Biomedicinsk teknik

   Författare :Svante Rosenlind; [2023]
   Nyckelord :Focusing algorithms; k-wave; Spatiotemporal inverse filter; Gerchberg- Saxton algorithm; Focused ultrasound; Technology and Engineering;

   Sammanfattning : High intensity focused ultrasound is a growing technique for tissue ablation, among other uses, and given its destructive capabilities, there is a need for control of where the energy is delivered. There exist a number of methods for focusing such ultrasound arrays, but these often assume prior knowledge of the impulse response, or require extensive full-system simulations. LÄS MER