Kvalifikační práce
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Zobrazují se záznamy 421-480 z 10923
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Security of Trapdoor Permutations under Preimage Leakage
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 12. 9. 2023This thesis explores preimage leakage-resilient trapdoor permutations (PLR-TDPs) and their applications in proofs of storage replication and incompressible encodings. The thesis consists of three chapters covering the ... -
Mikrostruktura a vlastnosti tenkých vrstev multiferroických komplexních oxidů připravených pomocí metody pulzní laserové depozice
Výsledek obhajoby: UZNÁNO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 28. 6. 2023Title: Microstructure and properties of multiferroic complex oxide thin films prepared by pulsed laser deposition method Author: Petr Machovec Department: Department of Condensed Matter Physics Supervisor: RNDr. Milan ... -
Node-attributed community detection
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 7. 9. 2023Complex systems surround us in our everyday lives and their understanding can bring crucial insights into many fields. These systems consist of components (also known as communities) tied together. This thesis focuses on ... -
Interaktivní program pro podporu studia Lagrangeova a Hamiltonova formalismu teoretické mechaniky
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 4. 9. 2023 -
Navigace skupiny jednotek v RTS hrách za pomoci toků v sítích nad flow field oblastmi
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 6. 9. 2023This thesis explores the challenges of implementing effective navigation for groups of units in real-time strategy computer games, specifically focusing on the movement of large numbers of homogeneous units across a ... -
Unsupervised segmentation of Gregorian chant melodies for exploring chant modality
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 6. 9. 2023Gregorian chant, as an oral musical tradition, was performed by singers that had to memorize thousands of melodies. Each melody has a set of properties, one of which is what mode it belongs to within the modal system. To ... -
Feature preserving triangle mesh fairing
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 6. 9. 2023In this thesis, we address the problem of smooth interpolatory subdivision of triangle meshes. This problem is more challenging than general smooth subdivision as the original vertices of the mesh cannot be moved to produce ... -
Alternativní algoritmus stavby SSA formy pro GCC
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 7. 9. 2023SSA form is a very important concept in compiler internal code representa- tion. Φ-functions are an integral part of SSA form. Braun, Buchwald, Hack, Leißa, Mallon and Zwinkau introduce a new algorithm for SSA construction ... -
Methods of User-Assisted Summarization of Meetings
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 7. 9. 2023Automated minuting, or meeting summarization, is the task of accurately capturing the contents of a meeting in a short text or in bullet points. Recently, a lot of progress has happened in this area, largely due to the ... -
Heuristics for Length Bounded Cuts
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 11. 9. 2023This thesis deals with the problem of finding a minimum length-bounded cut in a graph. We first provide a brief overview of the problem and its applications. We then discuss the known theoretical results and approximation ... -
Comparative Markov state analysis of APOE protein dynamics by neural networks
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 5. 9. 2023This thesis leverages the CoVAMPnet neural network architecture to analyze the dy- namics of apolipoprotein E (APOE), a protein involved in the development of Alzheimer's disease. CoVAMPnet offers a versatile machine ... -
Multilingual Multimodal Detection of Humour in Stand-Up Comedy
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 6. 9. 2023This thesis focuses on the multimodal and multilingual detection of humor in stand- up comedy videos. A novel multilingual dataset was collected, primarily targeting the Russian language, to address the lack of specific ... -
K rozkladu křivosti v cirkulárních prostoročasech
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 5. 9. 2023Calculation of scalars obtained from the Riemann curvature tensor in co- ordinate components is not always efficient, this is true even in very simple spacetimes. Firstly, the calculation is not intuitive and secondly, ... -
Fázové transformace v hliníkových slitinách typu AlEr(Sc)
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 13. 9. 2023The effects of Sc addition, different Er concentrations and deformation on phase transitions in Al(-Sc)-Er-Zr alloys were studied. Three distinct processes were identified during isochronal annealing in all of the alloys ... -
Delta metoda a její zobecnění
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 5. 9. 2023The goals of this thesis are various generalizations of the classical delta theorem, in which the advantage is that we can separately investigate the analytical properties of transformation of the estimate, and independently, ... -
Studium elektronových přeskoků v systému konjugovaných molekul metodami kvantové mechaniky.
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 4. 9. 2023In this thesis the electron hopping of selected heterocyclic compounds and selected carotenoids was studied using QM/MM simulations of excited states dynamics. Tully electron hopping and semiempirical methods OMx in ... -
Spectrum problem
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 4. 9. 2023In this thesis we present the notion of a spectrum of a first-order sentence, including several theorems linking it to computational complexity theory and well-known open problems of Scholz and Asser. We show that there ... -
Experimental study of the deformation mechanisms in cobalt by advanced in-situ techniques
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 13. 9. 2023The behaviour of pure polycrystalline cobalt in compressive deformation is influenced by the presence of high temperature fcc phase. To investigate this influence samples are prepared using annealing at different temperatures ... -
Obrazy typických spojitých funkcí
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 8. 9. 2023It follows from the Baire theorem that comeagre sets in complete metric spaces are "topologically large". Properties that are satisfied by a large set are called typical. The proofs of statements concerning typical properties ... -
Nonlinear classes of mappings: properties and approximation
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 11. 8. 2023In this thesis, we explore classes of mappings suitable for models in Nonlinear Elastic- ity. We investigate whether, given the presence of certain desirable properties, there exists an element within the class that exhibits ... -
Marked particle processes
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 5. 9. 2023This diploma thesis delves into the study of marked particle processes, a relatively unexplored field in stochastic geometry and spatial statistics. The main aim of the thesis is to lay some basic foundations of the marked ... -
Quantum fluid dynamics and quantum turbulence probed using micro- and nano-resonators
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 7. 9. 2023In this Thesis, we present an excessive study of the dynamics of quantum fluids em- ploying the detectors in the form of mechanical resonating structures with characteristic dimensions below 1 mm. We operate the devices ... -
Intervaly spolehlivosti pro dvouparametrické exponenciální rozdělení
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 7. 9. 2023Abstract. In this work, we examine both point and interval estimators of two-parameter exponential distribution. We determine whether point estimates are unbiased, consistent, or both, and derive exact distributions from ... -
Nástroj pro průzkum a vizualizaci modelu pro simulátor mozku Mozaik
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 7. 9. 2023Simulations of biological neural networks are an important tool for under- standing how the brain processes information. Mozaik is a workflow frame- work that allows such simulations to be created, run and analyzed. ... -
Výpočet kořenů polynomů pomocí přidružených matic
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 6. 9. 2023The bachelor thesis describes the relationship between the roots of the polynomial and the eigenvalues of the companion matrix, which is formed from the coefficients of the given polynomial. For numerical computing, it can ... -
Geodetická dynamika v polích černých děr obklopených disky
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 5. 9. 2023One of the basic tasks of general relativity is to calculate the motion of free test particles by integrating the geodesics equation. In the field of an iso- lated stationary black hole, the problem is fully integrable. ... -
Homoclinic orbits in perturbed black-hole fields
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 5. 9. 2023In order to generate observable electromagnetic signatures, astrophysical black holes have to interact with matter. Arround the black hole, matter typically forms into a symmetric disc through which it gradually inspirals ... -
Hypertělesa a jejich aplikace v tropické geometrii či teorii matroidů
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 4. 9. 2023Hyperfields are algebraic structures generalizing the concept of an algebraic field. In contrast to classical fields, summation in a hyperfield is multivalued, that is, the sum of two elements is not a single element, but ... -
Neuronové generování textu z pojmů se znalostními grafy
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 6. 9. 2023Modern language models are strong at generating grammatically correct, natural lan- guage. However, they still struggle with commonsense reasoning - a task involving making inferences about common everyday situations without ... -
Statická analýza NumPy programů
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 7. 9. 2023NumPy programs can be hard to debug. Due to the dynamic nature of Python, a bug can manifest itself after a long time of run time. This causes the computation to crash, ditching all the progress. Existing static analysis ... -
Understanding cross-lingual abilities in large multilingual language models
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 6. 9. 2023Cross-lingual abilities have been evident in large multilingual language models over the past few years. However, understanding why and under what circumstances they work is not entirely clear. In this work, we work towards ... -
Kan extensions and adjoint functors
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 4. 9. 2023This thesis is devoted to Kan extensions. First, we provide needed definitions and prove a theorem which gives us an existence condition for a Kan extensions. The proof of this theorem also contains a guide to constructing ... -
pp-elimination of quantifiers in module theories
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 4. 9. 2023The aim of this thesis is to prove the Baur-Monk Theorem and thereby show complete module-theories admit an elimination of quantifiers down to (Boolean combinations of) existential formulae. To achieve this, following a ... -
Semifields and skew polynomial rings
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 12. 9. 2023In this thesis we give constructions of semifields, often characterized as not necessarily associative division algebras, from skew polynomial rings which are rings of polynomials over a field where multiplication is not ... -
Korelační analýza a kurzy sázkových kanceláří
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 8. 9. 2023This bachelor's thesis focuses on a statistical method called correlation analysis. The aim of the thesis is to explain various correlation coefficients such as Pearson's correlation coefficient, point biserial correlation, ... -
Klasifikace konečně dimenzionálních modulů nad řetězcovými algebrami
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 4. 9. 2023In this thesis we classify indecomposable finite dimensional modules over string alge- bras. In the introductory part we define string algebras and string modules and band modules. In the third chapter we prove the ... -
Improving Subword Tokenization Methods for Multilingual Models
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 5. 9. 2023In this thesis, we explore the differences between tokenization methods for multilingual neural language models and investigate their impact on language model representation quality. We propose a set of metrics to evaluate ... -
Geometrie intervalových lineárních soustav
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 7. 9. 2023Interval linear systems of equalities and inequalities are linear systems, where the real numbered entries of the vectors and matrices are replaced with closed intervals of real numbers. The sets of solutions to these ... -
Zranitelnosti webových aplikací
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 7. 9. 2023Se stále dostupnějším připojením k internetu roste i počet webových aplikací a jejich uživatelů. S tímto nárůstem - jak už to bývá se vším - se zvětšuje i počet lidí, kteří se snaží nedostatky v těchto aplikacích zneužít. ... -
Analysis of cross-over clinical trials in the presence of baseline measurements
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 5. 9. 2023This thesis aims to provide a comprehensive overview of methods for estimating treat- ment effects in cross-over designs. It examines approaches that use baseline measurements to estimate the treatment effect, as well as ... -
Propagace šumu v algoritmech kostruujících krylovovské regularizační báze pro řešení inverzních problémů
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 7. 9. 2023In this thesis we consider a linear inverse problem Ax ≈ b with a smoothing operator A and a right-hand side vector b polluted by unknown noise. To find good approximation of x we can use large family of iterative ... -
Studium vlastností nových kontrastních látek pro zobrazování magnetickou rezonancí
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 5. 9. 2023Abstract: Contrast agents for magnetic resonance imaging frequently employ organic com- plexes of paramagnetic ions. The present work studies rotation of phoshonate group in LnIII complexes of monoethylester-P of ... -
Kalibrace meteorologických webových kamer
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 7. 9. 2023The work deals with the calibration of meteorological web cameras, which can be then used for training of neural networks for the creation of realistic lighting and the genera- tion of realistic clouds in the sky into 3D ... -
Design and prototypical implementation of a radiometrically calibrated light source to perform dark-light adaptation measurements of the human eye
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 7. 9. 2023The thesis is about obtaining absolute radiometric values of a scene using only a digital camera. A further usage of this data to calibrate a screen to perform experimental dark adaptation measurements of the human eye is ... -
Optimizing Super Mario game tree search
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 6. 9. 2023Super Mario Bros. is still actively used as a model game for research in level genera- tion. Every year, the most recent techniques are applied and tested. This lately includes various deep learning and reinforcement ... -
Využití gadgetové konstrukce pro strukturální konvergenci
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 11. 9. 2023Structural convergence is a framework for convergence of graphs and relational struc- tures based on the probability of satisfaction of first-order formulas. We consider gadget construction, which is a ubiquitous tool in ... -
EdLab - webová aplikácia pre online vzdelávanie
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 7. 9. 2023The field of education is rapidly evolving, with distance learning becoming an incre- asingly popular method of teaching. With the advent of technology, teachers are seeking effective ways to educate their students even ... -
Optimalizace plánování tras a rozvrhů svozu odpadu
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 5. 9. 2023This thesis proposes a mixed integer linear program for waste collection in South Moravian region. For deterministic models are difficult to solve by exact methods, it was necessary to find a way to obtain solutions in ... -
Experimental Analysis of Scaling Methods for LP
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 7. 9. 2023In his recent work, Dadush et al. introduced the condition number κ for constraint matrices of linear programming and devised an algorithm to approximately optimize κ by scaling columns of the constraint matrix. We follow ... -
Kundtova třída prostoročasů v Einsteinově-Gaussově-Bonnetově teorii gravitace
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 5. 9. 2023In this work, we study a complete family of non-expanding Lorentzian geome- tries with non-vanishing gyratonic terms in the Einstein-Gauss-Bonnet (EGB) theory of gravity of arbitrary dimension. First, we introduce the large ... -
Analýza krylovovských regularizačních metod pro úlohy zaostřování obrazu
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 7. 9. 2023The diploma thesis deals with the construction and properties of image deblurring problems along with approaches to their solution. We focus on Krylov subspace methods LSQR, GMRES and RRGMRES, which are known for their ... -
4D Rubikova kostka: reprezentace a řešení metodami umělé inteligence
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 7. 9. 2023The main goal of this thesis is to generalize Micheal Herdy's algorithm for solving Ru- bik's cube using evolutionary strategies for a 4D Rubik's cube. The thesis then studies its characteristics, attempts to improve it, ... -
Příprava jednodimenzionálních chemických senzorů oxidu kovu
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 5. 9. 2023In this thesis, the preparation of a chemical sensor that uses a one-dimensional structure as a sensitive part is studied. First, a scanning electron microscope (SEM) was used to examine the following structures: zinc oxide ... -
Odhadování na principu věrohodnosti
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 7. 9. 2023In this thesis we will describe the maximum likelihood method, method of estima- ting unknown parameters that determine the probability distribution of the observed data. We will also introduce other methods derived from ... -
Prípustnosť a neprípustnosť odhadu
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 8. 9. 2023The quality of a parameter estimate is usually assessed using the mean squared error (MSE). For one dimensional parameter, the estimate constructed using the least squares method is the best. However, for a vector parameter ... -
Influence of relativistic effects on atomic spectra
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 5. 9. 2023In this thesis we investigate solution of Dirac equation in spherically symmetric po- tential. The potential consist of Coulomb field of the nucleus and average potential of all other electrons in atom. We expand the ... -
Duality for weak Lebesgue spaces
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 8. 9. 2023When p ∈ (0, 1), both the dual and the associate space of the weak Lebesgue space Lp,∞ contain only the zero function. In this thesis, we study a different method of dualization of the weak Lebesgue space. Then we extend ... -
Testy dobré shody s exponenciálním rozdělením
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 7. 9. 2023The thesis deals with goodness-of-fit tests for the exponential distribution. In the first part, basic concepts are introduced, including their properties. Afterwards, goodness-of- fit tests based on the empirical distribution ... -
Hybridní doporučování pro doménu knih
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 7. 9. 2023The bachelor thesis deals with the topic of recommender systems, which are especially important in e-commerce field. The main goal of the thesis was to implement a recom- mender system that would cover the needs of ... -
Simulation of symptoms of Mental Health Disorders in Virtual Reality
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 6. 9. 2023The target of the thesis is to develop a software tool for simulation of various symptoms of selected mental health disorders (e.g. depression, schizophrenia, etc.) using virtual reality (VR). This software will be applied ...