Browsing Kvalifikační práce by Issue Date
Now showing items 1-20 of 10066
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Ovlivnění efektivity sběru náboje v detektorech záření laserovými pulsy.
Defence status: RECOGNIZED(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Date of defense: 5. 1. 2023The main focus of this thesis is the characterization of the charge transport in CdZnTe radiation detectors and the study of the effect of the detector illumination on charge transport. The transport properties are evaluated ... -
Elektrické a optické vlastnosti SiC monokrystalů
Defence status: RECOGNIZED(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Date of defense: 5. 1. 2023Silicon carbide is a semiconductor with a wide bandgap of up to 3.2 eV and is capable of operating in extreme conditions, high temperature and high energy modes. This work focuses on the investigation of electrical and ... -
Konvergence stochastického gradientu v úlohách strojového učení
Defence status: DEFENDED(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Date of defense: 7. 9. 2022The aim of this thesis is solving minimization problems where the objective function is a sum of a differentiable (yet possibly non-convex) and general convex function. We focus on methods of stochastic and projected ... -
Aktivity z částicové fyziky na střední škole
Defence status: DEFENDED(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Date of defense: 16. 6. 2022This thesis is aimed at teaching of particle physics on secondary school level and studies literature dealing with experiments and activities which are usable in the clas- sroom. The research was focused on curricula in ... -
Study of instabilities in tokamak plasmas using radiation diagnostics
Defence status: DEFENDED(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Date of defense: 21. 3. 2022Title: Study of instabilities in tokamak plasmas using radiation diagnostics Author: Martin Imríšek Department: Department of Surface and Plasma Science Supervisor: Prof. RNDr. Milan Tichý, DrSc. Consultants: Mgr. Vladimír ... -
Variants of Reed-Solomon codes over other algebraic structures
Defence status: DEFENDED(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Date of defense: 2. 2. 2022Reed-Solomonovy kódy tvoří známou rodinu samoopravných kódů s mnoha dobrými vlastnostmi. Tyto kódy však pro svou funkčnost vyžadují konečné těleso, které omezuje velikost abecedy na mocniny prvočísel. V této práci jsme ... -
Vývoj experimentálních stanovišť pro novou koncepci tématu Optika v Interaktivní fyzikální laboratoři II
Defence status: DEFENDED(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Date of defense: 16. 6. 2022In this thesis, a new experimental set for the Interactive Physical Laboratory (IPL), operated by the Faculty of Mathematics and Physics, Charles University, was designed. This experimental set consists of five units named: ... -
Track reconstruction at the NA62 experiment
Defence status: DEFENDED(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Date of defense: 15. 6. 2022The NA62 experiment at CERN represents leading physics research of rare kaon de- cays. The aim of NA62 is to measure the rate of the decay K+ → π+ νν. Any significant discrepancy between the measured decay rate and the ... -
Acoustics of interaction of unsteady flows with periodic structures
Defence status: RECOGNIZED(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Date of defense: 17. 2. 2022Akustika interakcí vířivého proudění s periodickými strukturami Viktor Hruška ABSTRAKT Tématem této dizertace je studium vybraných případů z oblasti aeroakustiky periodických struktur. Kritická analýza použitelnosti ... -
Volumes of unit balls of Lorentz spaces
Defence status: RECOGNIZED(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Date of defense: 26. 4. 2022This thesis studies the volume of the unit ball of finite-dimensional Lorentz sequence spaces p,q n . Lorentz spaces are a generalisation of Lebesgue spaces with a quasinorm described by two parameters 0 < p, q ≤ ∞. The ... -
Content-Based Image Retrieval: from Primitive to Advanced Techniques
Defence status: DEFENDED(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Date of defense: 9. 6. 2022The Wienbibliothek im Rathaus, Vienna City Library, collected over 300 thousand posters scanned in high quality from the last 100 years. Browsing and searching in such a large dataset is beyond human power. Therefore, a ... -
Regresní hloubka a podobné metody
Defence status: DEFENDED(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Date of defense: 12. 9. 2022While the halfspace depth has gained more and more popularity in the recent years as a robust estimator of the mean, regression depth, despite being based on a similar concept, is still a relatively unknown method. The ... -
Properties and interpretation of black hole spacetimes
Defence status: DEFENDED(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Date of defense: 31. 5. 2022In this thesis, we study a limit of the Kerr-(A)dS spacetime in a general dimen- sion where an arbitrary number of its rotational parameters is set equal. The resulting metric after the limit formally splits into two parts: ... -
Neural Cell Segmentation from Fluorescent Microscopy Images of Mouse Brains
Defence status: DEFENDED(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Date of defense: 7. 9. 2022Our objective is to propose a neural cell segmentation algorithm for fluorescent mi- croscopic images of mice brains. We received a dataset from the Laboratory of Neu- rochemistry, Institute of Physiology of the Czech ... -
Motion of a large cylinder in superfluid helium
Defence status: DEFENDED(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Date of defense: 15. 6. 2022The behaviour of flows in superfluid helium is still partly unknown. This work aims to contribute to this active field of research by studying the macroscopical vortices shed from the trailing edge of cylinder with ellipsoidal ... -
Atom vodíku na vysokoškolské a středoškolské úrovni
Defence status: DEFENDED(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Date of defense: 17. 6. 2022This master thesis is focused on teaching the hydrogen atom on a university and high school level. The objective of this thesis is to compare ap- proaches to hydrogen atom in available university study materials. Based on ... -
Analysis and visualization of OCR output
Defence status: DEFENDED(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Date of defense: 12. 9. 2022Optical Character Recognition (OCR) is a process of converting text from images to a machine-readable text. We run three OCR systems (Tesseract, Ocrad and GOCR) on an original multilingual OCR dataset and perform statistical ... -
Magnetic properties of rare-earth A2Ir207 pyrochlore iridates
Defence status: DEFENDED(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Date of defense: 12. 5. 2022The present thesis is focused on the synthesis, characterisation and magnetic properties of A2Ir2O7 pyrochlore iridates with A standing for Dy - Lu. The geometrically frustrated pyrochlore lattice affects the interactions ... -
Emulátor zvukových syntezátorů
Defence status: DEFENDED(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Date of defense: 12. 9. 2022A tool for creation of emulators of audio synthesizers. The base of the work is an imperative programming language Cynth that describes signals of the resulting sound. Cynth code is translated into C code for further linkage ... -
Kovalentne previazané molekulárne siete na kovom pasivovaných povrchoch
Defence status: DEFENDED(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Date of defense: 14. 6. 2022The creation of electronic devices only from atoms or molecules could be the next step in the creation of more advanced nanotechnologies. Initial experiments have already taken place and we know that it is possible on some ...