National Repository of Grey Literature 559 records found  1 - 10nextend  jump to record: Search took 0.00 seconds. 
Impact of European Central Bank and Federal Reserve System statements on cryptocurrency markets via sentiment analysis
Krejcar, Vilém ; Krištoufek, Ladislav (advisor) ; Čech, František (referee)
This study explores the impact of public statements from major central banks, specifically the FED and the ECB, on Bitcoin volatility from 2018 to 2021. Utilizing high-frequency data, we computed Bitcoin's volatility and extracted sentiment scores from the central banks' communications using two methods: the FinBERT language model and the state-of-the-art Generative AI GPT-4 model with tailored prompt. The GPT-4 model, capturing more nuanced senti- ment from text, was deemed superior. Our analysis involved comparing various models, with the HAR model emerging as the most e ective for this study. The research findings are particularly significant: negative sentiment from the ECB during the pandemic was associated with immediate and significant increases in Bitcoin volatility, indicating a market reaction of caution when faced with negative emission. These findings highlight the significant impact of central bank sentiment on Bitcoin volatility, confirming the initial hypothesis of this research. Additionally, the results provide a motivation to incorporate Genera- tive Artificial Intelligence into academic research as a tool for uncovering novel insights. JEL Classification C32, C55, C58, E58, G15 Keywords central banks, sentiment analysis, volatility, Bit- coin, GenAI, HAR, FED, ECB Title Impact of European...
Big Five personality traits and chronic diseases: Who is more prone to suffer from chronic diseases?
Tkáčová, Andrea ; Votápková, Jana (advisor) ; Bertoli, Paola (referee)
Chronic diseases are a growing concern for older adults, impacting their health and well-being. This thesis explores the link between personality traits and chronic diseases in this population, utilizing logit and multinomial logit mod- els to analyse risk factors. Three increasingly complex models were employed, progressively incorporating factors like residence country and generational dif- ferences. Inborn personality traits were used as an exogenous instrument for mental well-being as mental health is often endogenous to health status. Re- sults reveal neuroticism, a personality trait characterized by negative emotions and stress management di culties, as the strongest predictor of chronic dis- eases. This finding emphasizes the critical role of mental health in overall health. Individuals high in neuroticism are more likely to engage in unhealthy behaviors that increase their risk of chronic diseases. Additionally, the influ- ence of demographics, health behaviors, socioeconomic factors, and education was explored. Chronic disease risk soars with unhealthy habits like excess eat- ing resulting in overweight and drinking alcohol, but plummets with exercise and staying smoke-free. This emphasizes the critical role of healthy behaviors throughout life. The findings highlight the importance of...
Modelovací úlohy - Role strategií při procesu transformace mentální představy do formální reprezentace
GEYER, Jakub
Modeling tasks, consisting in the transformation of a mental image into the formal representation, very often occur in the study of computer science, mathematics, but also in other technical and non-technical fields. From the didactic point of view, it is interesting in modeling tasks (among others), which methods/procedures solvers (students) use to manage more demanding complex tasks. It is often possible to encounter students, who have significant problems solving complex tasks (or they are not able to solve them satisfactorily at all), even though they did not have any problems with similar simpler tasks before during the course. A possible explanation can be seen in the suboptimal use of modeling strategies (e.g. divide&conquer, iterative approach, etc.) or their total absence. This research is focused on the analysis of the role of strategies in modeling tasks, the possibilities of their support/development and teaching methods. The study is conducted, which aimed to analyze the possible impact of strategies in the procedures of university students in solving modeling tasks in the areas of 3D modeling and databases. The goal of the research was also to analyze the possibility of generalization of modeling strategies and their transferability between domains with different type of model.
Design and Implementation of Project for Optimizing Processes within IT Project Portfolio
Hrušková, Eliška ; Doskočil, Radek (referee) ; Širáňová, Lenka (advisor)
This diploma thesis aims on the usage of project methodologies in implementing solutions within IT. The theoretical part closely describes concepts of project management, process modelling, audit and other identified topics. Second part contains a description of Garrett Motion company, in which this project is executed, their aim, locations and a analysis of current state. The design part introduces a project aiming on process optimization within IT Project Portfolio with BIC Tool and implementation of activities related to support these processes.
Analysis of the Impact of Problem Solving Strategies using UPPAAL STRATEGO
Karásek, Filip ; Žádník, Martin (referee) ; Strnadel, Josef (advisor)
This thesis analyzes and addresses the impact of strategies created using Uppaal Stratego. The implementation of four problems, counter, maze, bitmap, and intersection is demonstrated in this thesis. Experiments are conducted on these models, and strategies are formulated. For the first three problems, strategies with a positive impact on the given system were identified. However, for the last intersection model, it was not possible to find a strategy that demonstrably improved the system. This inability to demonstrate improvement is due to limitations in Uppaal Stratego and the complexity of the model.
Design of a rotary pendulum with a flexible joint
Palát, Ondřej ; Formánek, Martin (referee) ; Dobossy, Barnabás (advisor)
This Bachelor thesis is focused on design of laboratory equipment with flexible joint. It describes construction, control electronics design, microcontroller programming and mathematical modelling describing flexible joint dynamics. Model parameters were estimated based on measurements. First part also describes market survey and brief description of algorithms used for numeric parameter estimation.
Statistical Model Checking of Approximate Computing Systems
Blažek, Michal ; Sekanina, Lukáš (referee) ; Strnadel, Josef (advisor)
This bachelor's thesis focuses on the simulation of models of approximate multipliers. The main aim of the thesis is comparing selected properties of multipliers in an application-specific scope of input values. The thesis includes the conversion of multiplier models from the EvoApproxLib library into models used in the UPPAAL environment. These models are then simulated while monitoring their selected evaluation metrics such as error probability, mean absolute error, etc. From the obtained results, one can conclude that using a suitable approximate multiplier in a specific context can have a positive effect on the error in calculations. The results could therefore have further applications in the field of approximate computing systems.
Design and realization of 110 kV overhead and cable line laboratory models
Lelek, Jan ; Jurák, Viktor (referee) ; Ptáček, Michal (advisor)
The bachelor thesis deals with modelling of overhead and cable of 110 kV lines in PSCAD simulation environment and realization of equivalent laboratory models of these lines. The objectives of the thesis also include an approximation of the technical design of 110 kV lines, definition of the necessary parametrs for the creation of the models themselves, including descriptions of the possibilities of mathematical modelling of the lines. Following the fulfilment of the mentioned objectivites, the theoretical part of the thesis presents factual data of 110 kV lines located within the distribution networks of the Czech Republic, including the basic theory related to line parameters. Subsequently, the thesis deals with the introduction of possible approaches of mathematical modelling of lines, targeted description of possible modelling approaches in the PSCAD simulation environment and selection of necessary parameters for the creation of these models. The practical part of the thesis presents the mathematical models of overhead and cable lines, presenting the results of simulations for different operating states of the lines. The practical part also presents in detail the design, realization and laboratory measurement of physical laboratory models of overhead and cable of 110 kV lines. The thesis then includes a comparison between the results obtained for the line models that were created in the PSCAD simulation environment and the laboratory models.
Analysis of Characteristics of Train Traffic Controlled by ERTMS/ETCS
Ondroušek, Adam ; Šimek, Václav (referee) ; Strnadel, Josef (advisor)
The aim of this thesis is to analyze train operations controlled by ERTMS/ETCS, primarily within the Czech Republic. A model was created using the Uppaal software, which simulates train operations. Subsequently, a scenario was designed that significantly increased the efficiency of the modeled track. This scenario was verified using Uppaal SMC's simulation and probabilistic queries. Favourable results were achieved by doubling the intervals of passenger transport during peak hours and adding a freight train unit to the operation during this time with minimal time delay while maintaining operational safety. The model is designed to simulate any train unit and track section and could thus serve as a tool for planning and analyzing train transport after the implementation of ERTMS/ETCS.
Design and optimization of the hydraulic suspension model
Zrnčík, Matej ; Králík, Jan (referee) ; Radil, Filip (advisor)
Tato práce se zaměřuje na návrh a optimalizaci modelu odděleného hydraulického odpružení s cílem dosáhnout požadovaného dynamického chování automobilu. Model zavěšení je vytvořen v prostředí Matlab, Simulink. Tato práce popisuje proces návrhu modelu zavěšení, zjištění vstupů do jeho simulace, určení výstupu simulace a proces jeho optimalizace. Nakonec vyvození závěrů z výsledků optimalizace.

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