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Study of the behavior of vacuum insulation based on secondary raw materials
Zelenka, Jakub ; Novák, Vítězslav (referee) ; Zach, Jiří (advisor)
The bachelor's thesis deals with an extensive literature research on the topic of vacuum insulation and their use in civil construction and other areas of application. The theoretical part is devoted to the composition of vacuum insulation and materials suitable for the production of their cores. Based on the performed research, the design of possible alternative core insulators based on natural secondary raw materials has been conducted. These can be used in the production of vacuum insulation.
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Czech prince and Saxon duke in 12th century. Comparison of the Czech principate and Saxon duchy of Henry the Lion
Zelenka, Jan ; Žemlička, Josef (advisor) ; Bláhová, Marie (referee)
If we resume the results of our comparison, we can see that the basic difference between the duchy of Saxony, territorial domain of Henry the Lion and Bohemian principality is represented by inner political structure of these domains. In consequent this inner political structure were also the chances ofthe emperor encroach diverged. The Saxonian duchy was a conglomerate of major number of aristocratic domains. The holders of these domains (bishops, earls ..... etc.) did not subordinate to fiats of the duke, they did not grant his authority. His power and support from emperor Frederick I. Barbarossa gave him a factual dominance over the other princes of Saxony however it did not let him to beared rule over them. His effort to enlarge his own principality threatened other princes's political positions and that is why they were in constant opposition
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Modeling spatial interactions on the example of the regional cities
Zelenka, Jaroslav ; Marada, Miroslav (advisor) ; Chmelík, Jakub (referee)
Management and planning of transportation is becoming more important in terms of continuously growing intensity of spatial interactions, which are still mostly realized through transport networks. That's why we can deal with this specific problem of transportation geography using for example spatial interactions modeling. The general aim of the thesis is modeling of spatial interactions and their subsequent comparison with real flows by using calibration in order to predicate the future value of flows taking the planned changes in the transport network in consideration. The main tool used to achieve the goal of the thesis is the gravity model which was applied on the example of regional capitals in the Czech Republic. Based on accomplishments we may say, that centers with lower significance of monitored relations are characterized by further location towards most centers, small number of inhabitants, low intensity of model interactions and lower values of transport intensities with neighboring centers. With the center growth itself, its range of interactions with other centers grows as well. Key Words: spatial interactions modeling, gravity model, model interaction, transport intensity, regional capitals
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Struggle for Šwidnica-Jawor duchy under the reign of the Luxembourg dynasty
Zelenka, Jaroslav ; Bobková, Lenka (advisor) ; Vorel, Petr (referee)
Shire of successors of Boleslav I. of Svídnice (Schweidni tz, Swidnica) represents an anomaly in the history of Silesia. Dukes of this branch of Silesian house of Piasts were thoroughly refusing to became vassals of czech king by profi ting of their rel a tionship wi th Wi ttelsbachs, Habsbourgs, Anj ous, as well as wi th polish king Casimir III of Poland. Bolek II of Svidnice was the most powerfull adversary of Luxembourgs. Even by using a military force, John of Luxembourg couldn't break his opposition. Situation had radically changed by the Treaty of Namyslov (Namslau, Namyslów) between Charles IV and Casimir III of Poland in 1348. By this treaty, polish king officially renounced to support his nephew. Charles IV was aware of quali ties of Bolek II and he didn't want to loose him by blessing his ego. So he didn't choose the way of violence, but he gave him a lot of privileges to "buy" his support. Czech king offered to Bolek II the alliance that he couldn't refuse. By this alliance he allowed Bolek to fulfill his power ambi tions what should have never been done, if he had remained adversary of Luxembourg's. Bolek I I of Svidnice was capable to profit from this extraordinary favor until his death. He succeeded to j oin to his shire numerous territories and assure some important economic privileges for...
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Origins of intentionality and Husserl's late thinking
Zelenka, Jiří ; Novotný, Karel (advisor) ; Zika, Richard (referee)
This work aims to pursue the roots and sources of intentionality. Intentional structure of consciousness is the very core of Edmund Husserl's phenomenology and plays the main role since his Logical investigations. The problem of intentionality is complicated and complex and resonates through the Husserl lifelong work Our starting point is Husserl's late work Erfahrung und Urteil. The reason why we choose this work is twofold. First, this work shows the thoughts which result from the life long investigation of problematics. And the second reason is, this work hasn't been the subject of examination as much as Husserl's earlier works so far. The key to our work is the perspective in which every phenomenon shows. That's the reason, why we follow intentionality in three perspectives, which gradually uncovers itselves. The first perspective is the descent from acts of judgment to the original layers of intentionality. This brings us to the second perspective, which is the instinctive intentionality. This is the subject of following part of our work. The exposing of instinctive intentionality underlines the role of embodiment. The importance of embodiment in regard to intentionality is the final perspective. We investigate this with help of Maurice Merleau-Ponty Phenomenology of perception. This will...
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Ronald Inglehart's theories and their contribution to historical sociology with regard to the publications since 2000.
Zelenka, Jakub ; Černý, Karel (advisor) ; Gramskopf, Rostislav (referee)
This diploma thesis aims to map the work that Ronald Inglehart published after the year 2000 and to include it in the concept of historical sociology. In my work I deal with a total of seven books, which I subject to critical reflection and at the same time I compare with other authors who commented on the given topics. The work will touch on theories of modernization, democratization, secularization and to a lesser extent civilization analysis. I will also add remarks and observations from the point of view of quantitative methodology, as Inglehart's theories are based on a large amount of quantitative data based on questionnaire surveys. The first part of my work deals with modernization theory, the next part deals with secularization and the third part focuses on the analysis of civilization. In modernization and secularization, I will first introduce versions of the theories that Inglehart and co-authors published during the first decade of the 21st century. After that, I will always reflect on recent work (2017- 2021). In the civilization part, which is the shortest, I will summarize his findings across his work. At the end of his work, Inglehart also makes predictions about future society. I also intend to analyze these findings in my diploma thesis. At the end of the work I evaluate the...
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Does LSTM neural network improve factor models' predictions of the European stock market?
Zelenka, Jiří ; Baruník, Jozef (advisor) ; Čech, František (referee)
This thesis wants to explore the forecasting potential of the multi-factor models to predict excess returns of the aggregated portfolio of the European stock mar- ket. These factors provided by Fama and French and Carhart are well-known in the field of asset pricing, we also add several financial and macroeconomic factors according to the literature. We establish a benchmark model of ARIMA and we compare the forecasting errors of OLS and the LSTM neural networks. Both models take the lagged excess returns and the inputs. We measure the performance with the root mean square error and mean absolute error. The results suggest that neural networks are in this particular task capable of bet- ter predictions given the same input as OLS but their forecasting error is not significantly lower according to the Diebold-Mariano test. JEL Classification C45, C53, C61, E37, G11, G15 Keywords Stocks, European market, Neural networks, LSTM, Factor Models, Fama-French, Predic- tions, RMSE Title Does LSTM neural network improve factor mod- els' predictions of the European stock market?
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The second one, less important? - Comparison of the cadet branches of sovereign dynasties in Central Europe
Ekrt, Tomáš ; Žemlička, Josef (advisor) ; Zelenka, Jan (referee)
of the paper: Historiography pays different attentions to cadet branches of sovereign dynasties. Because of that some of them are well known to the public, while others are almost forgotten. Generally, they are considered less important. In my work I am paying attention to cadet branches of the Premyslid dynasty and cadet branches of other sovereign dynasties in central Europe. What were their relations with their ruling relatives? What were their marriage policies and their domains? Can we find any general tendencies in cadet branches of sovereign dynasties and were they really less important? I am trying to answer these and other questions in my work. Also, I am trying to introduce life stories of cadet branches. Key words: Middle Ages, cadet branch, Central Europe, Premyslides, Babenberger, Silesian Piasts
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Targeted cancer therapy based on altered metabolism of amino acids
Šafrhansová, Lucie ; Starková, Júlia (advisor) ; Zelenka, Jaroslav (referee)
The effects of targeted therapies in the treatment of cancer have been extensively researched and tested in many clinical trials. In contrast to conventional chemotherapy treatment, targeted therapy should act specifically on cancer cells with limited toxicity and lower risk of side effects. One type of targeted therapy exploits the Achilles heel of cancer - the specificity of tumour metabolism. With knowledge of the metabolic differences between tumor and normal cells, we can set up conditions that normal cells easily bridge, while tumor cells die as a result. This can be achieved by removing certain amino acids from the extracellular environment on which cancer cells depend. A well-known enzyme that has been used therapeutically for many years is asparaginase. However, asparaginase therapy is only successful in some cancers, so further development is needed, as well as the search for enzymes with similar effects. Over the years, four other enzymes that could become an integral part of the treatment of cancer patients in the future have been discovered - arginine deiminase, arginase, methioninase and cyst(e)inase. Past and current studies have investigated their effects on cancer cells in vitro and in vivo. Successful elimination of cancer cells often comes with limitations as immunogenicity and...
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