Sökning: "Physics"
Visar resultat 11 - 15 av 2573 uppsatser innehållade ordet Physics.
11. The visibility of stellar transients in the Galactic Centre
Kandidat-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/AstrofysikSammanfattning : A semi-analytical simulation was developed to evaluate the K-band magnitudes of Red Giants [0.96 - 1.02 M⊙] orbiting the supermassive black hole in the galactic centre. The model assumed star formation between 10-12 Gyrs ago and by following the IMF and applying a random age condition, a stellar population was created. LÄS MER
12. Exocomets in the β Pictoris system
Kandidat-uppsats, Lunds universitet/Astrofysik; Lunds universitet/Fysiska institutionenSammanfattning : Comets have been a source of fascination throughout the history of man. In recent years, advances in technology have opened up for the study of extrasolar objects, among them exocomets. The first exocomets were observed in the β Pictoris system almost 50 years ago and the system has been of interest ever since. LÄS MER
13. Self-Supervised Learning for Tabular Data: Analysing VIME and introducing Mix Encoder
Kandidat-uppsats, Lunds universitet/Fysiska institutionenSammanfattning : We introduce Mix Encoder, a novel self-supervised learning framework for deep tabular data models based on Mixup [1]. Mix Encoder uses linear interpolations of samples with associated pretext tasks to form useful pre-trained representations. LÄS MER
14. Fysik med grafer i fokus : En studie av elevers tolkningsfärdigheter av kinematikgrafer
Master-uppsats, Linnéuniversitetet/Institutionen för fysik och elektroteknik (IFE)Sammanfattning : Denna studie undersöker gymnasieelevers förmåga att tolka grafer inom rörelseläran, och hur denna förmåga utvecklas mellan fysik 1a och fysik 2. Studien baseras på en enkät med frågor från Test of Understanding Graphs in Kinematics (TUG-K), som mäter elevernas förmåga att tolka och analysera kinematikgrafer utifrån fyra aspekter: tolka lutning, tolka area under kurva, relatera grafer till en textbeskrivning, och relatera olika typer av grafer till varandra. LÄS MER
15. Structural analysis of HZO thin film and electrode using X-ray diffraction
Kandidat-uppsats, Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionenSammanfattning : Since its discovery in 2011, the ferroelectricity of thin films based on HfO2 has been studied intensively. In particular, thin films with a 1:1 ratio of HfO2 and ZrO2 (HZO) has been of great interest. The ferroelectricity arises from a non-centrosymmetric orthorhombic (o) phase of HZO whose prevalence is dependent on the processing conditions. LÄS MER