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Studies of plasma disruptions in the COMPASS tokamak
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 16. 12. 2022Title: Studies of plasma disruptions in the COMPASS tokamak Author: Ekaterina Matveeva Department: Department of Surface and Plasma Physics Supervisor: RNDr. Milan Tich'y, Dr.Sc., Univerzita Karlova, Katedra fyziky povrch˚u ... -
Zavedení vektorového součinu
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 9. 9. 2022Title: Definition of vector product Author: David Holý Department: Department of Mathematics Education Supervisor: Mgr. Zdeněk Halas, DiS., Ph.D., Department of Mathematics Edu- cation Abstract: The main goal of this thesis ... -
Lightning-Related Electromagnetic Wave Phenomena in the Earth's Magnetosphere
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2019)Datum obhajoby: 16. 12. 2019Název: Elektromagnetické vlnové jevy v magnetosféře Země související s bleskovou aktivitou Autor: Jan Záhlava Katedra: Katedra fyziky povrchů a plazmatu Vedoucí: doc. RNDr. František Němec, PhD., Katedra fyziky povrchů a ... -
Structure of flow-continuous mappings in algebraic context
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 9. 5. 2022We explore the structure of the cycle space of the graphs - most notably questions about nowhere-zero flows and cycle double covers. We touch several facets of this field. First we show that there are edge 2-connected ... -
Východiska nového kurikula fyzikálního vzdělávání
Výsledek obhajoby: UZNÁNO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 6. 10. 2022This thesis presents starting and supporting points for a new secondary school physics curricu- lum and the methodology which was used. The research design was inspired mainly by the objectivist grounded theory. 29 in-depth ... -
Question Answering in Czech via Machine Translation and Cross-lingual Transfer
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 31. 10. 2022Reading comprehension and question answering are computer science disciplines in the field of natural language processing and information retrieval. Reading comprehension is the ability of the model to read text, process ... -
Study of gamma decay in 168Er from neutron capture
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 27. 9. 2022The γ-ray emission process in highly-excited nuclei is typically described within the statistical model of nucleus using the two main ingredients - the level density (LD) and the photon strength functions (PSFs). The ... -
Extensible disassembler with support for interactive instruction reordering
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 13. 9. 2022Machine code disassembling is a process of transforming binary machine code into assembly code. The main purpose of this process is to help people to understand the purpose of the program without knowing its source code. ... -
The search for new spin-liquid materials - synthesis of kagome and pyrochlore fluoride magnetics
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 9. 6. 2022This thesis focuses on the synthesis and characterization of a new AA′ B2F7-type pyrochlore fluoride family, NaCdB2F7 (B = Mn, Fe, Co, Ni, Cu, Zn) predicted by a cal- culated pyrochlore structural tolerance factor, as well ... -
Mobilná aplikácia pre rodiny
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 12. 9. 2022The goal of this work is to create a mobile application that will serve families and their members in their daily activities. This mobile application will include several fe- atures that will make everyday life easier for ... -
Research and education at astronomical institutes of the Czech and German universities in Prague in years 1882-1945
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 22. 9. 2022This thesis focuses on the development of astronomical institutions at the universities in Bohemia from 1882 to 1945. During this period, the Czech National Revival culminated. The importance of the emerging Czech science ... -
Spectroscopic studies of new generation of optical and magneto-optical materials
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 16. 9. 2022Title: Spectroscopic studies of new generation of optical and magneto-optical materials Author: Eva Butková Department / Institute: Institute of Physics of Charles University. Department of Materials Science and Technology ... -
Mathematical Analysis of Selected Problems for Complex Fluids
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 19. 9. 2022We study long-time and large-data existence theory of selected recently developed fluid mechanics models suitable for describing the mechanical behavior of materials with complex microstructure. In the first part of this ... -
Iterative methods for Tichonov regularization with generalized regularization terms
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 14. 9. 2022The aim of this thesis is to study hybrid methods for solving ill-posed linear inverse problems corrupted by white noise. These approaches are based on the combination of iterative Krylov subspace methods and the Tichonov ... -
Spectroscopic study of eccentric eclipsing binaries
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 15. 9. 2022Close eccentric eclipsing binary star systems are important to our understanding of stellar formation and evolution. We analyze three such systems - V335 Ser, BW Boo and DR Vul - with emphasis on a possible third body in ... -
Dvojzákrytové systémy
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 15. 9. 2022Title: Doubly-eclipsing systems Author: Bc. Ivana Šándorová Institute: Astronomical Institute of Charles University Supervisor: doc. RNDr. Petr Zasche, Ph.D., Astronomical Institute of Charles University Abstract: The study ... -
Photometric and spectroscopic characterization of substellar companions to stars
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 16. 9. 2022Substellar objects (giants planets and brown dwarfs) are objects not massive enough to sustain hydrogen fusion as stars do. These two groups have many similar properties; hence, the best way to characterise and distinguish ... -
Studium zákrytových dvojhvězd vykazujících změnu sklonu
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 15. 9. 2022The presented thesis is focused on the study of eclipsing binaries showing inclination changes of orbital plane. This orbital precession effect is probably caused by the presence of a third body in the system. Our method ... -
New Intersection Graph Hierachies
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 15. 9. 2022String graphs are the intersection graphs of curves in the plane. Asinowski et al. [JGAA 2012] introduced a hierarchy of VPG graphs based on the number of bends and showed that the hierarchy contains precisely all string ... -
Multivariate polynomial commitment schemes
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 14. 9. 2022This thesis focuses on polynomial commitment schemes - cryptographic protocols that allow committing to a polynomial and, subsequently, proving the correctness of evaluations of the committed polynomial at requested points. ... -
Effective description of resonances at low energy region
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 21. 9. 2022In this doctoral thesis, we study all the relevant two- and three-point Green functions of the chiral currents and densities. Specifically, in the first part of the thesis, we present the leading-order contributions of the ... -
Teorie relativity - jak na středoškolské úrovni rozvíjet její pochopení
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 22. 9. 2022The goal of this doctoral thesis is to find and implement possible ways to facilitate secondary school students' understanding of relativity. The thesis starts with an overview of existing literature as well as ongoingstudies ... -
EM algorithm for truncated Gaussian mixtures
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 12. 9. 2022The expectation-maximization iterative algorithm is widely used in parameter estimation when dealing with missing information. Such a situation can naturally arise when we observe the data of our interest on a bounded ... -
Andersonova veta
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 7. 9. 2022In this thesis we explore a theorem from real analysis and geometry called Anderson's theorem. It concerns an integral inequality for symmetric quasi-concave functions, where the integration is done over a symmetric convex ... -
Časová reverzibilita náhodného procesu
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 7. 9. 2022Random processes can be used to describe the evolution of a real systems over time. Discrete-time Markov chains are random processes that meet special assumptions, but they still have a lot of practical applications. Some ... -
Hlad po bonusu v pojištění motorových vozidel
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 5. 9. 2022The thesis deals with the analysis of bonus-malus systems used in motor insurance to adjust the amount of the premium depending on the number of claims reported by the driver. It focuses on the mathematical description of ... -
Webová aplikace pro vyhledávání receptů
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 12. 9. 2022This thesis aims to develop a web application for searching recipes. The search for recipes is based on aggregating datasets from the existing recipe websites and extending the data using knowledge graphs. Knowledge graphs ... -
Modelling of precursors for electron-beam induced deposition
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 13. 9. 20221 Abstract FEBID (focused electron beam induced deposition) precursors are a subject of active research both in experimental and computer simulation manners. Their potential use in FEBID is strongly dependent on the ... -
Alternativní odhady v ARMA-GARCH modelech
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 12. 9. 2022GARCH models are used to describe the volatility of time series. GARCH processes are usually estimated by maximum likelihood or by maximum quasi-likelihood method. However, as these methods require knowledge of the ... -
Optimalizace rozmístění stanic pro nabíjení elektrických vozidel
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 12. 9. 2022As the number of electric vehicles grows, so does the need to create a suitable network of charging stations. A solution of this problem can be significantly improved by the usage of suitable optimization techniques. We ... -
Reconstruction of magnetic configurations using machine learning approaches
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 7. 9. 2022Title: Reconstruction of magnetic configurations using machine learning approaches Author: Tatiana Vargicová Department: Department of Condensed Matter Physics Supervisor of the bachelor thesis: RNDr. Pavel Baláž, Ph. D. ... -
Kvantovo-mechanické previazanie optického rezonátora s iónmi v ultra-chladnej plazme
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 7. 9. 2022Quantum thoery predicts an existence of strong and collective strong coupling regime of atoms and electromagnetic field inside and within optical resonator. As an optical resonator is being used in optical cavity. In this ... -
Učebnice ve fyzikálním vzdělávání u nás a ve Finsku
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 2. 9. 2022The thesis compares Czech and Finnish physics textbooks on the introductory kinematic topics of position, velocity and distance. The paper compares the apparatus of tasks with which the textbooks are equipped. It mentions ... -
Rovnice struktury tenkých akrečních disků v obecné metrice
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 7. 9. 2022In the physics of accretion disks around extremely massive objects, the effect of spa- cetime curvature is manifested on the behaviour of gas and radiation. Black holes and the accretion disks around them are commonly ... -
Brouwerova věta o pevném bodě (přístupy a historie)
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 7. 9. 2022The aim of this work was to present different approaches to the proof of Brouwer fixed point theorem and to avoid proofs based on homotopy theory, degree of mapping or any non-trivial algebraic topology. The proofs were ... -
Optimalizace signálu tripletních stavů pigmentů ve fotosystému I
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 7. 9. 2022The main objective of the thesis is to improve signal-to-noise ratio for pigments' triplet states in photosystem I. The sample was purified from cyanobacterium Thermosynecho- coccus elongatus. Based on the measurements we ... -
Analýza vibračních spekter vybraných environmentálních kontaminantů
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 7. 9. 2022This bachelor thesis deals with the study of the vibrational spectra of melamine and thiram molecules using methods of Raman spectroscopy. Quantum chemical simulations are then used for a detailed interpretation of the ... -
Konvergence stochastického gradientu v úlohách strojového učení
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 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 ... -
Prostorová epidemiologie
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 12. 9. 2022This work deals with spa al sta s cs methods that are suitable for analysing spa al epidemiological data. The work presents tests of spa al autocorrela on and applies them on data of the number of people infected by Covid ... -
Shlukové bodové procesy s rodičovskými body
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 7. 9. 2022In this work we introduce some basic concepts from the theory of spatial point pro- cesses and two methods of estimation of the parametres for Thomas process. Firstly the method of minimum contrast, that is used for ... -
Rezervování škod na základě ODP modelu
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 7. 9. 2022This thesis deals with estimating the outstanding claims reserve, one of important problems of insurance mathematics. It introduces the chain-ladder method as the ba- sic method for estimating the outstanding claims. Besides ... -
Coloring triangle-free graphs on the torus
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 12. 9. 2022Pekárek and Dvořák (2021) proposed a linear-time algorithm to decide 3-colorability of triangle-free graphs drawn on the torus. We implemented this algorithm efficiently and evaluated its performance on a natural class of ... -
Autoregressive action-conditioned 3D human motion synthesis using latent discrete codes
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 7. 9. 2022V této práci jsme představili novou metodu pro syntézu 3D animace pohybu člověka podmíněné na pevné množině akcí definující pohyb, například "běhání" nebo "předklon". Inspirování úspěchy metod pro generování obrázků z textu ... -
An Assistant for Conversational Search
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 7. 9. 2022This thesis aims to improve the user experience for an existing information retrieval system in the domain of educational content by implementing a conversational search feature. Conversational search resembles a dialogue ... -
Investigating Large Language Models' Representations Of Plurality Through Probing Interventions
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 2. 9. 2022Title: Investigating Large Language Models' Representations Of Plurality Through Probing Interventions Author: Michael Hanna Institute: Institute of Formal and Applied Linguistics Supervisor: RNDr. David Mareček, Ph.D., ... -
Rank Two Commutative Semifields
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 6. 9. 2022In this thesis we will explain what are semifields and what interesting properties these algebraic objects possesses. In the first chapter we will go over some basics and preliminaries to understand what semifields are. ... -
Využití invertibilních prvků mřížky v ověření s nulovou znalostí
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 12. 9. 2022This work is focused on the description of one verifiable encryption scheme, specifically a zero-knowledge proof of knowledge protocol. Verifiable encryption allows us to prove properties of data without revealing its ... -
Web Browser Recorder
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 12. 9. 2022The goal of this thesis is to develop an intuitive RPA tool in the form of a client- server web application. This tool can be used for recording web automation workflows and their subsequent execution, modification and ... -
Vizualizace otevřených dat zveřejněných podle OFN pro úřední desky
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 12. 9. 2022The Bachelor thesis is about the design and implementation of a web application which visualizes data from public administration bulletin boards. It uses open data published according to a new machine-readable format ... -
Webová aplikácia pre vyhľadávanie a editáciu hráčov basketbalu vo Wikidata
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 12. 9. 2022There are many ways to publish data in a machine-readable form on the Internet. One way is through entities and their interconnection, where two entities are interconnected if they have a relationship with each other. Such ... -
H-compactifications of topological spaces
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 6. 9. 2022H-compactifications form an important type of compactifications, carrying the ex- tra property that all automorphisms of a given topological space can be continuously extended over such compactifications. Van Douwen proved ... -
Měření tepelné vodivosti materiálů pro projekt MaMBA
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 7. 9. 2022The content of this work is the measurement of thermal conductivity of materials within the MaMBA project. Single crystalline samples of LaNi$_5$ and PrNi$_5$ were successfully oriented along $a$ and $c$ axis each and ... -
Studium vlastností Faradayova válce s děleným kolektorem
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 7. 9. 2022Solar wind is plasma propagating from the Sun through interplanetary space. For determination of the parameters of this cosmic plasma, spacecraft often carry so-called Faraday cups, which can be used to determine the energy ... -
Dynamické vlastnosti kontinuí
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 6. 9. 2022This thesis investigates long-term topological behaviour of continuous self-maps or sets of continuous self-maps of metric spaces, mostly Peano continua. The first chapter is preparatory for the following two and summarize ... -
Measuring readability of technical texts
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 2. 9. 2022Title: Measuring readability of technical texts Author: Anna Kriukova Faculty of Mathematics and Physics: Institute of Formal and Applied Linguistics Supervisor: Mgr. Cinkov'a Silvie, Ph.D., Institute of Formal and Applied ... -
Image Reassembling Algorithms
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 7. 9. 2022Jigsaw puzzle is a well-known puzzle game that has been around for centuries. How- ever, in addition to entertainment purposes, an ability to reassemble images from pieces has practical applications and can be useful, for ... -
Lineární ODR se singulárními členy
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 8. 9. 2022In this text we focus on systems of two linear ordinary differential equations wherein some of the coefficients are no longer integrable functions, but signed Radon measures instead. First we devote our attention to measure ... -
Matematické modely synchronizace
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 13. 9. 2022The thesis aims to discuss spontaneous synchronization phenomenon in dynamic sys- tems, which are noticable all around us (beating heart, synchronization of clapping crowd, flashing of fireflies, synchronized ticking of ... -
Neural Cell Segmentation from Fluorescent Microscopy Images of Mouse Brains
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 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 ... -
Optimization of the performance of fuel cell stacks using an ultrasonic humidifier.
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2022)Datum obhajoby: 7. 9. 2022Title: Optimization of the Performance of Fuel Cell Stacks Using an Ultrasonic Humidi- fier. Author: Martin Vaněk Department: Department of Surface and Plasma Science Supervisor: Mgr. Yurii Yakovlev, Ph.D., Department of ...