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Zobrazují se záznamy 1141-1160 z 11264
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Modeling and study of quasi-two-dimensional magnetic materials
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 8. 6. 2023Dzyaloshinskii-Moriya interaction (DMI) is a type of exchange interaction found in non-centrosymmetric structures. It favors spin canting, and it is an important mechanism for stabilizing non-collinear magnetic structures, ... -
Construction of time-space trajectories from multimodal data
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 6. 6. 2023With the growth of public camera recordings and video streams in recent years, there is an increasing need for automatic processing with limited human input. An important part of the process is detecting moving objects in ... -
Hierarchical Version of the Wave Function Collapse Algorithm
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 6. 6. 2023Maxim Gumin's Wave Function Collapse (WFC) is a recent algorithm used for pro- cedural content generation. The algorithm uses constraint solving and local similarity to generate outputs. However, it struggles to generate ... -
German Compounds in Transformer Models
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 6. 6. 2023German is known for its highly productive word formation processes, particularly in the area of compounding and derivation. In this thesis, we focus on German nominal compounds and their representation in machine translation ... -
Fellerův test pro neexplosi
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 15. 6. 2023The main result of the work is a complete discussion of the solutions to stochastic differential equations on the half-line (0, ∞) with polynomial coefficients in terms of their lifetimes. To achieve this, Feller's test ... -
Active learning in E-Commerce Merchant Classification using Website Information
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 12. 6. 2023Data and the collection and analysis of data plays an important role in everyday life even though it often goes unseen. In our case, our partner is using data to classify websites into different categories. We used active ... -
Incremental link-time optimization in GNU Compiler Collection
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 29. 6. 2023Modern compilers attempt to optimize programs as much as possible. One such significant effort is Link-Time Optimization (LTO). LTO takes the whole program as accessible to a linker, and performs global optimizations that ... -
Generative neural networks for sky image outpainting
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 29. 6. 2023Image outpainting is a task in the area of generative artificial intelligence, where the goal is to expand an image in a feasible way. The goal of this work is to create a machine learning algorithm capable of sky image ... -
Covering families of triangles by convex sets
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 29. 6. 2023A convex universal cover of a family M of sets in the plane is a convex set that contains a congruent copy of every element of M. Park and Cheong conjecture that for every family of triangles with bounded diameter there ... -
Serre's conjecture on projective modules over polynomial rings
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 28. 6. 2023This is an expository paper on the Quillen-Suslin Theorem, formerly known as Serre's Conjecture. A self-contained proof of this theorem is presented, followed by a discussion of the related Bass-Quillen Conjecture. The ... -
Kvantový transport v nanoskopických systémech
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 21. 6. 2023Molecular electronics is currently a rapidly evolving field of science that uses both experimental and theoretical methods. Their combination is in many cases unavoidable. This paper will provide the reader with an overview ... -
Schoof's algorithm for Weierstrass curves
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 29. 6. 2023Schoof's algorithm is the starting point for the most efficient methods for determining the number of rational points on an elliptic curve defined over a finite field. The goal of this thesis is to introduce the subject ... -
Automatická extrakce schématu z RDF dat
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 29. 6. 2023The Resource Description Framework (RDF) is a model for the representation of semantic data. RDF allows the storage of information without a fixed schema. This provides more flexibility but the lack of a fixed schema poses ... -
Rozdělení typu (a,b,0) v neživotním pojištění
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 21. 6. 2023First, a definition of the distribution type (a, b, 0) is introduced. Next, it is shown which known distributions satisfy this definition, the parameters a and b that correspond to them, and specific sets of parameters for ... -
Alternující cesty v obarvených bodových množinách v konvexní poloze
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 28. 6. 2023This thesis deals with the problem of the longest alternating paths in colored point sets in a convex position, especially in point sets with n red and n blue points. The aim of the thesis is to summarize the main results ... -
Studium záření gama v rozpadu 83Rb/83mKr
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 12. 6. 2023In this work, the energies and intensities of gamma rays in the radioactive decay of 83 Rb were measured. The intermediate product, 83m Kr, is an important calibration source for several experiments. For the measurements, ... -
SPn approximation to the radiative heat transport equation
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 29. 6. 2023This thesis is dedicated to a problem of heat transport where radiation is taken into account. Models for such setting, although complicated, are very important for industrial purposes. We provide a derivation and explanation ... -
Social Networks: Analysis of Evolution and Sentiment
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 29. 6. 2023Nowadays, social networks form an essential part of our lives. Their analysis helps us better understand various social phenomena, identify individuals influencing society, and model future developments of communities. ... -
Superposition and thinning of counting processes in non-life insurance
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 21. 6. 2023The thesis examines a model for representing the number of claims after merging or splitting different lines of business of an insurance company. The model is based on count- ing processes, the Poisson and the renewal ... -
Banachova-Mazurova vzdálenost mezi Banachovými prostory spojitých funkcí
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 23. 6. 2023In this bachelor thesis, we examine estimates of a Banach-Mazur distance between spaces C(ω) and C(ω · k) for various k ∈ N. With a properly chosen form of mapping, we constructively show the best currently known upper ...
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