Poslední příspěvky

Zobrazují se záznamy 841-880 z 11462

  • 6D pose estimation of objects in images 

    Výsledek obhajoby: OBHÁJENO
    Cífka, Martin (Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)
    Datum obhajoby: 14. 2. 2024
    The 6D pose estimation is an important computer vision task with applications in robotics, e.g. for manipulation or grasping, but also in computer graphics and augmented reality. Given an image, the task is to estimate the ...
  • Postupy pro statistickou kontrolu náhodných procesů 

    Výsledek obhajoby: OBHÁJENO
    Lebeda, Matěj (Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)
    Datum obhajoby: 7. 2. 2024
    Procedures for statistical control of random processes are well known. What we miss, is the comparison of such procedures. In the beginning, we will introduce the linear regression model which will be our assumption ...
  • Algonauts challenge 2023: predicting human fMRI activity in response to visual stimulation 

    Výsledek obhajoby: OBHÁJENO
    Petliak, Nataliia (Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)
    Datum obhajoby: 13. 2. 2024
    In this thesis, we investigate the application of pretrained Deep Neural Networks, par- ticularly Vision Transformers (ViT), for predicting human fMRI activity in response to visual stimulation. The Algonauts Challenge ...
  • Point Cloud Rendering Approaches for Camera Pose Verification 

    Výsledek obhajoby: OBHÁJENO
    Kremel, Tomáš (Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)
    Datum obhajoby: 13. 2. 2024
    Visual localization is the problem of estimating the 6 degrees of freedom camera pose from which a query image was taken relative to a known reference scene representation. It is the key for applications such as Augmented, ...
  • Evolution strategies for policy optimization in transformers 

    Výsledek obhajoby: OBHÁJENO
    Lorenc, Matyáš (Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)
    Datum obhajoby: 13. 2. 2024
    We explore the capability of evolution strategies to train a transformer architecture in the reinforcement learning setting. We perform experiments using OpenAI's highly parallelizable evolution strategy and its derivatives ...
  • Fuzz testing of network subsystem in PikeOS 

    Výsledek obhajoby: OBHÁJENO
    Piroutek, Jan (Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)
    Datum obhajoby: 5. 2. 2024
    Stability under every possible circumstance is a goal for a lot of applications. This problem applies to the network stack ANIS of the real-time operating system PikeOS developed by SYSGO. PikeOS requires security and ...
  • Thermophoretic and Hydrodynamic Interactions in Artificial Active Matter 

    Výsledek obhajoby: OBHÁJENO
    Kolář, Martin (Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)
    Datum obhajoby: 8. 2. 2024
    The study of artificial active matter has significantly intensified in recent years due to its potential practical applications and promises to understand living organisms' in- teractions and collective behaviour. The ...
  • Geometrická zobrazení ve středoškolské matematice 

    Výsledek obhajoby: OBHÁJENO
    Smetana, Adam (Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)
    Datum obhajoby: 8. 2. 2024
    The current availability of computers and mobile devices in school facilities and the affordability of mobile devices for everyone provide for an increasing use of interactive geometry in the curriculum. The aim of this ...
  • Rozpoznávání retinopatie ve snímcích sítnice pomocí strojového učení 

    Výsledek obhajoby: OBHÁJENO
    Kubový, Jan (Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)
    Datum obhajoby: 13. 2. 2024
    In collaboration with the Institute for Clinical and Experimental Medicine (IKEM) and leveraging their historical examination data, we developed a convolutional neural net- work trained to identify diabetic retinopathy ...
  • Rozšíření kolizního modelu hlavního pásu asteroidů 

    Výsledek obhajoby: OBHÁJENO
    Vávra, Michael (Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)
    Datum obhajoby: 14. 2. 2024
    The Main Belt, the region between the orbits of Mars and Jupiter, is the home to more than 1 million asteroids. These asteroids form orbital groups, i.e., asteroid families formed by collisions; and also spectral groups ...
  • Větné reprezentace s interpretací podobnosti 

    Výsledek obhajoby: OBHÁJENO
    Svobodová, Zuzana (Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)
    Datum obhajoby: 13. 2. 2024
    Sentence representations - embeddings - obtained from neural network models are the core part of many applications in both academia and industry. Although embeddings reach great results in correlation with human sense of ...
  • Extension of smoothed particle hydrodynamics based on Poisson brackets 

    Výsledek obhajoby: OBHÁJENO
    Kincl, Ondřej (Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)
    Datum obhajoby: 9. 1. 2024
    The thesis aims to find a generalization of smoothed particle hydrodynamics to fluid models which are compatible with Hamiltonian formulation of physics. We develop an approach based on a particle discretization of Poisson ...
  • Low-resource methods for dialogue systems applications 

    Výsledek obhajoby: OBHÁJENO
    Hudeček, Vojtěch (Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)
    Datum obhajoby: 9. 2. 2024
    This thesis focuses on developing and improving task-oriented dialogue systems design in the rapidly growing landscape of artificial intelligence and natural language processing. We propose techniques that can substantially ...
  • Nanostructures for solar cells: controlling the surface electronic properties by monolayers of carborane molecules 

    Výsledek obhajoby: UZNÁNO
    Hladík, Martin (Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)
    Datum obhajoby: 12. 12. 2023
    Doped layers of crystalline silicon are currently the main driver of con- ventional photovoltaic devices. Direct introduction of group III and V atoms into the silicon matrix is still the mainstream of mass production of ...
  • Two-phase scheduling with unknown speeds 

    Výsledek obhajoby: OBHÁJENO
    Minařík, Josef (Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)
    Datum obhajoby: 16. 2. 2024
    Speed-robust scheduling is a two-stage scheduling problem with a makespan objective. We are given processing times of n jobs, number of machines m and number of bags b. We have to group the jobs into bags that are to be ...
  • Optical methods for characterization of semiconductor radiation detectors 

    Výsledek obhajoby: OBHÁJENO
    Pekárková, Katarína (Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)
    Datum obhajoby: 24. 1. 2024
    CdZnTe and perovskites are promising materials for radiation detectors. Here, we address the main obstacles to their application, CdZnTe charging, and perovskite stability by photocurrent measurements. In the first part, ...
  • Algebraic Tools in Combinatorial Geometry and Topology 

    Výsledek obhajoby: OBHÁJENO
    Bulavka, Denys (Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)
    Datum obhajoby: 28. 2. 2024
    In this thesis we study combinatorial problems through the lenses of the exterior alge- bra. This algebra is a natural object to model set systems as well as simplicial complexes. Moreover, it is possible to translate the ...
  • Properties of function spaces and operators acting on them 

    Výsledek obhajoby: OBHÁJENO
    Celý dokument nebo jeho části jsou nepřístupné do 04. 01. 2027
    Turčinová, Hana (Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)
    Datum obhajoby: 4. 1. 2024
    The present thesis is focused on the study of properties of function spaces con- taining measurable functions, and operators acting on them. It consists of four papers. In the first paper, we establish a new characterization ...
  • Distance magic labelings 

    Výsledek obhajoby: OBHÁJENO
    Pfeiffer, Hayden (Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)
    Datum obhajoby: 16. 2. 2024
    Title: Distance Magic Labelings Author: Hayden Pfeiffer Department: Dept. of Theoretical Computer Science and Mathematical Logic Supervisor: doc. Mgr. Petr Gregor, Ph.D., KTIML, MFF UK Abstract: A distance magic labeling ...
  • Výuka objemů a povrchů oblých těles na střední škole s podporou webové aplikace 

    Výsledek obhajoby: OBHÁJENO
    Rakušanová, Lucie (Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)
    Datum obhajoby: 8. 9. 2023
    This thesis is focused on the volume and surface area of solids, particularly on the volume and surface area of polyhedra and round solids, which are part of the high school curriculum of geometry (stereometry). The purpose ...
  • Tennenbaum phenomena in models of arithmetic 

    Výsledek obhajoby: OBHÁJENO
    Kriško, Lukáš (Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)
    Datum obhajoby: 5. 2. 2024
    The main aim of this text is to present and investigate some basic arithmetical func- tions and relations with regard to being recursive in a countable non-standard model of Peano arithmetic, PA for short, or some weaker ...
  • Automatizace generování popisů produktů pomocí neuronových jazykových modelů 

    Výsledek obhajoby: OBHÁJENO
    Hrouda, Václav (Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)
    Datum obhajoby: 5. 2. 2024
    Product descriptions are an important part of product presentation in e-commerce. This bachelor thesis explores the possibilities of using language models based on the Transformer architecture to generate product descrip- ...
  • Multi-agent trading environment for training robust reinforcement learning agents 

    Výsledek obhajoby: OBHÁJENO
    Mikuláš, Pavel (Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)
    Datum obhajoby: 13. 2. 2024
    This thesis presents a comprehensive study of the application of reinforcement learning to algorithmic trading. The main focus of this thesis is on the generalization properties of various reinforcement learning algorithms, ...
  • Analysis of topological magnetic phases using generative machine learning models 

    Výsledek obhajoby: OBHÁJENO
    Dušek, Ondřej (Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)
    Datum obhajoby: 8. 2. 2024
  • Polomřížky a nerozložitelné prvky 

    Výsledek obhajoby: OBHÁJENO
    Kuděj, Martin (Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)
    Datum obhajoby: 7. 2. 2024
    This thesis concerns the theory of semilattices, which are non-trivial discrete additive submonoids of Rn , which are contained in a cone. Special emphasis is on their indecomposable elements. The most important example ...
  • Reprezentační neuronové sítě pro diferencovatelné renderování objemu 

    Výsledek obhajoby: OBHÁJENO
    Nejedlý, Jaroslav (Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)
    Datum obhajoby: 14. 2. 2024
    This thesis investigates the possibility of using a representation neural network as a data structure for an appearance prediction model. We present the representation network as an adaptation of the popular neural radiance ...
  • Mapping of changes in optical and magneto-optical responses of Ni-Mn-Ga thin films across martensitic transformation and strain relaxation 

    Výsledek obhajoby: OBHÁJENO
    Makeš, Matěj (Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)
    Datum obhajoby: 8. 2. 2024
    This thesis studies optical and magneto-optical responses of thin epitaxial Ni-Mn- Ga films prepared by magnetron sputtering. The relative permittivity tensor spectra were computed from the spectroscopic ellipsometry data ...
  • Příprava nanočástic přechodných kovů a jejich oxidů pomocí plynových agregačních zdrojů 

    Výsledek obhajoby: OBHÁJENO
    Hanková, Adéla (Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)
    Datum obhajoby: 8. 2. 2024
    This work focuses on the synthesis of nanoparticles of vanadium, titanium and their oxides. Magnetron-based gas aggregation source was used for nanoparticle preparation. Metallic nanoparticles of vanadium and titanium ...
  • Representation of Gay and Bisexual Women in Video Games and Players' Attitudes: An Empirical Study 

    Výsledek obhajoby: OBHÁJENO
    Petrova, Alexandra (Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)
    Datum obhajoby: 14. 2. 2024
    The aim of this empirical study was to examine how players' explicit and implicit attitudes towards content depicted in a video game influence their interaction with the game and their game experience. In order to do so, ...
  • Ultrarychlá dynamika nosičů náboje ve 2D materiálech 

    Výsledek obhajoby: UZNÁNO
    Koutenský, Petr (Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)
    Datum obhajoby: 25. 3. 2024
    Title: Ultrafast dynamics of charge carriers in 2D materials Author: Bc. Petr Koutenský Department: Department of Chemical Physics and Optics Supervisor: RNDr. Martin Kozák, Ph.D., Department of Chemical Physics and Optics ...
  • Information Extraction from structured business documents by learning from similarity 

    Výsledek obhajoby: OBHÁJENO
    Holeček, Martin (Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)
    Datum obhajoby: 21. 9. 2023
    The automation of document processing is gaining recent attention due to the great potential to reduce manual work through improved methods and hardware. In this area, neural networks have been applied before - even though ...
  • Forward and Backward Modelling of Spectroscopic Diagnostics in Fusion Plasmas 

    Výsledek obhajoby: OBHÁJENO
    Tomeš, Matěj (Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)
    Datum obhajoby: 11. 3. 2024
    Title: Forward and Backward Modelling of Spectroscopic Diagnostics in Fusion Plasmas Author: Matěj Tomeš Department: Department of Surface and Plasma Science Supervisor: Mgr. Jakub Seidl, Ph.D., Institute of Plasma Physics ...
  • Object layout in a 2D room based on text description 

    Výsledek obhajoby: OBHÁJENO
    Pavelka, Jan (Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)
    Datum obhajoby: 5. 2. 2024
    This thesis presents a solution for generating structured description a 2D map of a room from a bird's eye view based on textual description in Czech. It focuses on identifying physical objects and their mutual relative ...
  • Simulation of rings surrounding the progenitor of SN1987A 

    Výsledek obhajoby: OBHÁJENO
    Jireš, Michal (Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)
    Datum obhajoby: 14. 2. 2024
    SN1987A, the first supernova visible by the naked eye since 1600s, is anomalous by existence of preexisting triple ring nebula around it. One candidate explanation of the nebula is a binary merger of SN1987A's progenitors. ...
  • Kvantové jizvení v mnohočásticových systémech 

    Výsledek obhajoby: OBHÁJENO
    Škultéty, Richard (Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)
    Datum obhajoby: 9. 2. 2024
    In this work, we will introduce the concept of quantum scarring. Quantum scarring refers to the states inside the chaotic parts of spectra, which significantly differ from predictions for chaotic states. In this work, we ...
  • Investigation of Ir(Ox)-Ru(Oy) thin-film catalysts for oxygen evolution reaction in proton exchange membrane water electrolyzers 

    Výsledek obhajoby: UZNÁNO
    Hrbek, Tomáš (Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)
    Datum obhajoby: 24. 1. 2024
    The main focus of this work is the investigation of the anode catalysts for the Proton Exchange Membrane Water Electrolyzers (PEM-WEs). PEM-WEs play a pivotal role in the hydrogen economy concept as they allow water ...
  • Extending Data Lineage Analysis for Python with Runtime Types 

    Výsledek obhajoby: OBHÁJENO
    Luňák, Václav (Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)
    Datum obhajoby: 14. 2. 2024
    There is an increasing demand in the domain of data science for auto- mated tools analyzing the data lineage of software systems. In situations where general-purpose programming languages are used, Python is among the most ...
  • Hawkesov proces 

    Výsledek obhajoby: OBHÁJENO
    Feketeová, Adela (Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)
    Datum obhajoby: 8. 2. 2024
    This bachelor thesis is dedicated to Hawkes process. It is divided into six chapters. Chapter one consists of an introduction into the theory of random processes and a de- scription of Poisson process, the second chapter ...
  • Generating Music Symbols Using Neural Networks 

    Výsledek obhajoby: OBHÁJENO
    Havelka, Jonáš (Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)
    Datum obhajoby: 5. 2. 2024
    We create more training data for the optical music recognition (OMR) task by generating artificial images of the music symbols. We follow up Mashcima and the model J. Mayer trained on it. We take the Rebelo dataset (dataset ...
  • Motional electromagnetic induction in the subsurface ocean in Europa 

    Výsledek obhajoby: OBHÁJENO
    Kureš, Ondřej (Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)
    Datum obhajoby: 13. 9. 2023
    Europa is one of the Jovian icy moons with confirmed subsurface ocean. Circulation of the ocean in presence of the Jovian ambient magnetic field leads to generation of the ocean-induced magnetic field (OIMF). On Earth, the ...

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