Sökning: "c- omorganisation"

Visar resultat 1 - 5 av 38 uppsatser innehållade orden c- omorganisation.

1. 1. An Infrared Stellar Thermometer: Exploiting IGRINS Spectra

   Kandidat-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation

   Författare :Emelie Sandved; [2022]
   Nyckelord :Effective temperature; K-giants; surface gravity; oxygen abundance; carbon abundance; CO lines; OH lines; line sensitivities; Physics and Astronomy;

   Sammanfattning : Using the infrared (IR) spectral range when measuring stellar spectra is beneficial compared to using the optical range mainly when observing distant stars through the dust dense interstellar regions in the Galactic mid-plane. Methods to determine stellar parameters from IR spectra are, however, not fully developed yet because technological difficulties in creating reliable IR detectors have slowed the advance of such methods. LÄS MER

3. 2. Dynamic Stopping for Artificial Neural Networks

   Kandidat-uppsats, Lunds universitet/Beräkningsbiologi och biologisk fysik - Genomgår omorganisation

   Författare :Daniel Louis Hubert Lizotte; [2022]
   Nyckelord :Artificial Neural Network; Physics and Astronomy;

   Sammanfattning : The growing popularity of Artificial Neural Networks (ANN) demands continuous improvement and optimization of the training process to achieve higher-performing algorithms at a lower computational cost. During training an ANN learns to solve a problem by looking at examples, and will iteratively go over a dataset to reach an optimal performance. LÄS MER

4. 3. Measuring the [C II]-to-H I connection in high-redshift absorption-selected galaxies

   Kandidat-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation

   Författare :Gaurav Senthil Kumar; [2022]
   Nyckelord :QSO; Quasar; Black Hole; AGN; Active Galactic Nuclei; DLA; Damped Lyman Alpha; C II; [C II]; H I; Sightline; HST; X-shooter; Spectroscopy; Echelle Spectroscope; Hyperfine transition; Hyperfine; Physics and Astronomy;

   Sammanfattning : HI neutral gas is the basic building block of galaxies. It dictates the star formation rate and hence the metal enrichment rates within high redshift galaxies. HI neutral gas cannot be directly observed beyond z ≈ 0. LÄS MER

5. 4. Cancer Driver Gene Detection using Deep Convolutional Neural Networks on H3K4me3 Enrichment Profiles

   Master-uppsats, Lunds universitet/Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation

   Författare :Marc Pielies Avellí; [2022]
   Nyckelord :Cancer Driver CD Gene; Histone Post-Translational Modifications PTMs ; Convolutional Neural Networks CNNs .; Physics and Astronomy;

   Sammanfattning : In spite of our current knowledge regarding the biology underlying cancer genesis, reliable methods for the discovery of cancer driver (CD) genes are still in great need. The rather recent incorporation of epigenetic markers to the cancer paradigm has nevertheless opened the door for the development of new computational approaches to the problem. LÄS MER

7. 5. On the (1/2,1/2) Representation of the Lorentz Group and the Discrete CPT Symmetries

   Kandidat-uppsats, Lunds universitet/Teoretisk partikelfysik - Geonomgår omorganisation

   Författare :Nikolaj Skog Pirinen; [2021]
   Nyckelord :The Lorentz Group; Group Theory; Quantum Field Theory; CPT; Symmetry; Spinors; Representation Theory; Physics and Astronomy;

   Sammanfattning : This thesis derives the explicit form of the elements of the (1/2,1/2) representation of the Lorentz group, by actually performing a direct product of the chiral (1/2,0)- and (0,1/2)-representations. The Lorentz transformations of fourvectors are thereafter recovered from this direct-product representation, allowing the derivation of a transformation matrix between the fourvector- and direct product basis. LÄS MER