Poslední příspěvky

Zobrazují se záznamy 841-880 z 11244

  • Mnohorozměrné modelování volatility 

    Výsledek obhajoby: OBHÁJENO
    Jurák, František (Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)
    Datum obhajoby: 11. 9. 2023
    This thesis deals with the formulation and estimation of the multivariate GARCH model. It mentions the various parameterizations of the multivariate GARCH model and discusses the relationships between them. The necessary ...
  • Expektily a jejich odhady 

    Výsledek obhajoby: OBHÁJENO
    Škurek, Jan (Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)
    Datum obhajoby: 8. 9. 2023
    This bachelor's thesis focuses on studying expectiles as an alternative approach to traditional quantiles. Expectiles are becoming increasingly popular as risk measures in various fields, including finance and insurance ...
  • Hydrosphere structure of icy satellites 

    Výsledek obhajoby: OBHÁJENO
    Košíková, Terézia (Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)
    Datum obhajoby: 5. 9. 2023
    The exploration of potential life on other celestial bodies within the Solar System is one of the key questions in planetary science. In this work, we focused on determining the hydrosphere of the icy moons Ganymede and ...
  • Odhady metodou maximálníhou součinu mezer 

    Výsledek obhajoby: OBHÁJENO
    Svoboda, Stanislav (Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)
    Datum obhajoby: 7. 9. 2023
    In this thesis we study the maximum product spacing (MPS) estimation. First we shortly introduce the maximum likelihood (ML) method. Then, we explain the MPS me- thod in detail. Finally, in specific cases, we demonstrate ...
  • Porovnanie priamych regularizačných metód založených na najmenších štvorcoch pre úlohy zaťažené šumom 

    Výsledek obhajoby: OBHÁJENO
    Cepko, Tomáš (Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)
    Datum obhajoby: 6. 9. 2023
    In this thesis we are going to deal with the inverse linear approximation problem Ax ≈ b, where our goal is to find the best approximation x of the unknown exact solution. We are going to especially focus on the so-called ...
  • Aproximace metodou TLS: lineární fitování dat pro problémy s nepřesným modelem 

    Výsledek obhajoby: OBHÁJENO
    Pokorná, Kateřina (Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)
    Datum obhajoby: 6. 9. 2023
    In this thesis, we concern ourselves with the linear approximation problem, where errors in both the observation and the data are considered. We focus on the total least squares problem (TLS), which may be used in solving ...
  • Framework pro vizuální analýzu strukturních stavů proteinů 

    Výsledek obhajoby: OBHÁJENO
    Škrhák, Vít (Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)
    Datum obhajoby: 6. 9. 2023
    Proteins are involved in most molecular processes in living organisms, and their study, therefore, finds use in many applications. The 3D structure plays a fundamental role in the protein's ability to bind other molecules ...
  • Kvantily pre smerové dáta 

    Výsledek obhajoby: OBHÁJENO
    Fedor, Jakub (Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)
    Datum obhajoby: 11. 9. 2023
    In this thesis we study a special type of multidimentional data - directional data. The main part of this thesis consists of defining and comparing different ways of order- ing directional data. The most important functions ...
  • Coupling, transportní metrika a aplikace pro přibližné počítání 

    Výsledek obhajoby: OBHÁJENO
    Kluvancová, Rozálie (Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)
    Datum obhajoby: 7. 9. 2023
    An important property of discrete-time Markov chains with finite state space is the rate of convergence of the marginal distribution of the chain to the stationary distribution (i.e. mixing rate). If we construct a coupling ...
  • Optimalizace Value at Risk pomocí celočíselného programování 

    Výsledek obhajoby: OBHÁJENO
    Fausek, Matěj (Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)
    Datum obhajoby: 8. 9. 2023
    This thesis is focused on the portfolio optimization problem. The foundations of this problem were laid by Professor Markowitz (1952), who measured risk using the standard deviation of random returns. In this paper, the ...
  • Srovnání sekvenční a strukturních metod strojového učení pro predikci protein-ligand vazebných reziduí 

    Výsledek obhajoby: OBHÁJENO
    Divín, Prokop (Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)
    Datum obhajoby: 7. 9. 2023
    The prediction of protein-ligand binding sites is an important task, allowing us to understand protein-ligand interactions, the understanding of which is essential in drug design and the development of certain areas of ...
  • Optimalizace experimentů pod vysokým tlakem pro měření optické aktivity 

    Výsledek obhajoby: OBHÁJENO
    Plamitzer, Luboš (Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)
    Datum obhajoby: 5. 9. 2023
    The presented bachelor thesis focuses on the effects of high hydrostatic pressure on Raman spectra of selected monoterpenes: (−)-fenchone, (−)-carvone, (−)-limonene and (−)-α-pinene. The spectra under pressures up to 13 ...
  • Dynamická predikcia v analýze prežitia 

    Výsledek obhajoby: OBHÁJENO
    Mečiarová, Kristína (Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)
    Datum obhajoby: 5. 9. 2023
    Often the motivation behind building a statistical model is to provide prediction for an outcome of interest. In the context of survival analysis it is important to distingu- ish between two types of time-varying covariates ...
  • Využití základních statistických metod v psychologickém výzkumu 

    Výsledek obhajoby: OBHÁJENO
    Benešová, Anna (Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)
    Datum obhajoby: 11. 9. 2023
    This work deals with testing methods for a two-sample problem and their subsequent application to data from the field of behavioural economics. The main question of the analysis is to determine the existence of loss aversion ...
  • Fotometrická a spektroskopická analýza dvojhviezdneho systému 

    Výsledek obhajoby: OBHÁJENO
    Moravčík, Tomáš (Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)
    Datum obhajoby: 5. 9. 2023
  • Data logging and visualization for Mailtrain using IVIS 

    Výsledek obhajoby: OBHÁJENO
    Štrobl, Filip (Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)
    Datum obhajoby: 7. 9. 2023
    Mailtrain is a self-hosted, free and open-source newsletter application with advanced options for managing lists of subscribers, creating and sending e-mail campaigns, and managing multiple users with granular permissions ...
  • Trigonometrické a Fourierovy řady a jejich aplikace 

    Výsledek obhajoby: OBHÁJENO
    Sirotková, Veronika (Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)
    Datum obhajoby: 5. 9. 2023
    Fourier series are an important tool of mathematical analysis with many applicati- ons. This thesis focuses on their use in several specific mathematical problems. The first application is the proof of the isoperimetric ...
  • A Framework For Experimental Evaluation of Opinion Diffusion Models 

    Výsledek obhajoby: OBHÁJENO
    Jelínek, Dominik (Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)
    Datum obhajoby: 7. 9. 2023
    Title: A Framework for Experimental Study of Opinion Diffusion Models Author: Dominik Jelínek institute: IUUK Supervisor: Martin Koutecký, IUUK Abstract: Our theoretical contribution centers on defining possible diffusion ...
  • Zmírnění otravy CO ve vodíkovém palivovém článku. 

    Výsledek obhajoby: OBHÁJENO
    Kalabis, David (Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)
    Datum obhajoby: 12. 9. 2023
    This diploma thesis aims at studying a process of hydrogen fuel cell poisoning by molecules of carbon monoxide. Low loading platinum-ruthenium anode catalysts prepared by magnetron co-sputtering were studied. The chemical ...
  • Konformní predikce 

    Výsledek obhajoby: OBHÁJENO
    Krynická, Michaela (Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)
    Datum obhajoby: 8. 9. 2023
    The main objective of this work is to formalize the concept of conformal prediction. This robust, nonparametric method allows the construction of an accurate prediction interval at a specified level, for which it is ...
  • Testy dobré shody pro Paretovo rozdělení 

    Výsledek obhajoby: OBHÁJENO
    Oganesyan, Robert (Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)
    Datum obhajoby: 11. 9. 2023
    Pareto model is widely used in insurance and reinsurance, as well as in finance (capital management, stock returns), and in modelling of natural disasters. As a motivation, we introduce a case study drawn from the pricing ...
  • The Extension Property for Partial Automorphisms (EPPA) of Reducts of Relational Structures 

    Výsledek obhajoby: OBHÁJENO
    Beliayeu, Mikhail (Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)
    Datum obhajoby: 7. 9. 2023
    The Extension Property for Partial Automorphisms (EPPA), also called Hrusovski property, is a crucial concept in the realms of combinatorics, group theory, and model theory, linking the properties of structures and the ...
  • Ideals of Banach Spaces 

    Výsledek obhajoby: OBHÁJENO
    Smetana, Ondřej (Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)
    Datum obhajoby: 12. 9. 2023
    We study a particular class of subspaces of Banach spaces called ideals. We show that the notions of ideals, locally complemented subspaces, and the existence of a Hahn-Banach extension operator coincide. We introduce and ...
  • Testy dobré shody s Poissonovým rozdělením založené na nulovém indexu 

    Výsledek obhajoby: OBHÁJENO
    Váňová, Julie (Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)
    Datum obhajoby: 7. 9. 2023
    This bachelor thesis deals with goodness-of-fit tests for Poisson distribution that are based on so-called zero index. In the first part, Poisson zero index is defined and some of its basic properties are discussed. Further, ...
  • Kauzalita, míry kauzality 

    Výsledek obhajoby: OBHÁJENO
    Borák, Daniel (Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)
    Datum obhajoby: 7. 9. 2023
    Causality measures are useful tools when looking for causality in time series. This thesis does not only describe the theory behind the definition of measures of causality but also gives comprehensive instructions on how ...
  • Robust semi-generalized camera pose estimation using multiple minimal solvers 

    Výsledek obhajoby: OBHÁJENO
    Beliansky, Patrik (Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)
    Datum obhajoby: 7. 9. 2023
    Camera pose estimation is a fundamental problem in computer vision with various ap- plications, such as in Structure-from-Motion and Visual Localization. These applications often focus on registering a new camera to a set ...
  • Predikce rozdělení počtu úmrtí s aplikacemi v ocenění životních smluv 

    Výsledek obhajoby: OBHÁJENO
    Škopek, Pavel (Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)
    Datum obhajoby: 5. 9. 2023
    This thesis deals with the topic of mortality modelling and life insurance pricing. First, basic concepts from the demographic model and life tables are introduced. Following is a description of the Lee-Carter model including ...
  • Vývoj magmatického oceánu ve slapově zahřívaných terestrických exoplanetách 

    Výsledek obhajoby: OBHÁJENO
    Verkinová, Natália (Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)
    Datum obhajoby: 12. 9. 2023
    The thesis focuses on the study of terrestrial exoplanets that are tidally heated, which can give rise to the formation of magma oceans. The primary objective is to analyze the impact and evolution of the magma ocean and ...
  • Crystals with magnetic frustration and multiferroic coupling 

    Výsledek obhajoby: OBHÁJENO
    Eliáš, Adam (Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)
    Datum obhajoby: 5. 9. 2023
    This thesis focuses on the growth of single crystals and magnetic characterization of CeMgAl11O19, a triangular lattice frustrated magnet from the rare earth hexaaluminate family. The CMAO harbors a network of electric ...
  • Parameterized Approximations of Directed Steiner Networks 

    Výsledek obhajoby: OBHÁJENO
    Koreček, Martin (Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)
    Datum obhajoby: 11. 9. 2023
    An instance of the Directed Steiner Network (DSN) problem consists of a directed graph G with edge costs, and k so called "terminal" vertex pairs. The task is to find a minimum-cost subgraph of G in which all terminal pairs ...
  • Crystal field by the means of single-crystal Time of Flight scattering 

    Výsledek obhajoby: OBHÁJENO
    Venclík, Štěpán (Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)
    Datum obhajoby: 5. 9. 2023
    Crystal electric field has been studied since the 1970s using inelastic neu- tron spectrometry. A simple one-day time-of-flight measurement on pow- dered samples is often used. This thesis aims to demonstrate a method of ...
  • Visualizing OSPF topology 

    Výsledek obhajoby: OBHÁJENO
    Turinský, Pavel (Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)
    Datum obhajoby: 7. 9. 2023
    Network administrators need to be aware of the state of their network. While link- state routing protocols like OSPF have the required information, there was no easy way to present it to the administrator. To solve this ...
  • Edwards curves and elliptic function fields 

    Výsledek obhajoby: OBHÁJENO
    Beran, Adam (Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)
    Datum obhajoby: 12. 9. 2023
    In this thesis, we study twisted Edwards curves using the theory of algebraic function fields. After summarizing the basic theory, we focus on the structure of the function field for curves that are given by an equation ...
  • Smooth Minecraft terrain rendering 

    Výsledek obhajoby: OBHÁJENO
    Hopfer, Eduard (Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)
    Datum obhajoby: 7. 9. 2023
    Interesting terrain is the backbone of any virtual world. To make features like caves, overhangs, and arches possible, we need to capture the internal structure of the terrain. In other words, we need a volumetric terrain ...
  • Performance of Open vSwitch-based Kubernetes Cluster in Pathological Cases 

    Výsledek obhajoby: OBHÁJENO
    Šraier, Václav (Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)
    Datum obhajoby: 6. 9. 2023
    With the adoption of cloud computing, horizontally scalable infrastruc- ture, and containerized deployments, Software Defined Networking (SDN) became an integral part of data centers, Kubernetes and Open vSwitch (OVS) being ...
  • Gender stereotypes in neural sentence representations 

    Výsledek obhajoby: OBHÁJENO
    Al Ali, Adnan (Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)
    Datum obhajoby: 7. 9. 2023
    Neural networks have seen a spike in popularity in natural language processing in re- cent years. They consistently outperform the traditional methods and require less human labor to perfect as they are trained unsupervised ...
  • Aspekty pojmu nezávislost v teorii pravděpodobnosti 

    Výsledek obhajoby: OBHÁJENO
    Anderle, Tim (Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)
    Datum obhajoby: 11. 9. 2023
    The aim of the bachelor's thesis was to explore the independence of random events in greater depth and address less common aspects of this topic. The first part defines the independence of random events in probability ...
  • Aproximácia rozdelenia úhrnov škôd 

    Výsledek obhajoby: OBHÁJENO
    Antalicová, Viktória (Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)
    Datum obhajoby: 8. 9. 2023
    This thesis is focused on the approximation of the distribution of aggregate losses. We first present a method for modelling aggregate losses, which involves selecting an appropriate frequency and severity distributions. ...
  • Modelování frekvence nenahlášených škod na úrovni pojistné smlouvy 

    Výsledek obhajoby: OBHÁJENO
    Králová, Eva (Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)
    Datum obhajoby: 11. 9. 2023
    In this thesis we study policy-level models for unreported claim counts. We assume that the total number of claims on a policy follows a Poisson or negative binomial dis- tribution. The parameters of these distributions ...
  • Asymetrické modelování volatility ve financích 

    Výsledek obhajoby: OBHÁJENO
    Ploužková, Karolína (Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)
    Datum obhajoby: 11. 9. 2023
    This bachelor thesis deals with modelling volatility in finance. The aim of the thesis is to introduce the models that can be used to this purpose. We focus on the GARCH and EGARCH models. For both models, we present their ...

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