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Automatic Analysis of Heart Rate Variability Signals
Kubičková, Alena ; Halámek, Josef (referee) ; Lhotská, Lenka (referee) ; Kozumplík, Jiří (advisor)
This dissertation thesis is dedicated to the heart rate variability and methods of its evaluation. It mainly focuses on nonlinear methods and especially on the Poincaré plot. First it deals with the principle and nature of the heart rate variability, then the ways of its representation, linear and also nonlinear methods of its analysis and physiological and pathophysiological influence on heart rate variability changes. In particular, there is emphasis on the metabolic syndrome. In the next section of the thesis there are compared and evaluated different ways of representation of the heart rate variability and further are tested selected methods of heart rate variability analysis on unique data from patients with the metabolic syndrome and healthy subjects provided by the Institute of Scientific Instruments, Academy of Sciences of Czech Republic. In particular, they are used the Poincaré plot and its parameters SD1 and SD2, commonly used time domain and frequency domain parameters, parameters evaluating signal entropy and the Lyapunov exponent. SD1 and SD2 combining the advantages of time and frequency domain methods of heart rate variability analysis distinguish successfully between patients with the metabolic syndrome and healthy subjects.
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Induced Oscillatory Behaviour During 2-Methylpropene (Isobutene) Hydrogenation in a Packed Bed Microreactor.
Vajglová, Zuzana ; Stavárek, Petr ; Jiřičný, Vladimír ; Kolena, J.
This contribution focuses on the induced oscillatory behaviour observed during the continuous hydrogenation of 2MP in a packed bed microreactor. Induced reproducible oscillations have been studied using the on-line gas chromatograph (GC-FID/TCD) and a catalyst bed temperature monitoring. Effects of the temperature, thermal conductivity and space velocity on the properties of induced oscillations have been investigated in detail. The study results revealed extremely high sensitivity of the oscillatory behaviour to the heat transfer conditions in the system. Experimental tests focusing on the space velocity effect revealed a significant influence on the oscillation amplitude height and period phase length with the high reaction rate. Based on the character of the induced oscillations, they have been classified as thermo-kinetic oscillations1 as they are resulting from the interaction between the exothermic reaction, heat transfer and a reversible decrease in the catalyst activity.
Fulltext: content.csg -  PDF
Plný tet: SKMBT_C22016111814300 - PDF
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GENRE AND ACTING TOOLS
Nesvadbová, Annette ; PLEŠTILOVÁ, Miroslava (advisor) ; SALZMANNOVÁ, Eva (referee)
In my dissertation called "Genre and Acting Tools", I am focusing on the moments during my studies at the Theatre Faculty of the Academy of Performing Arts (DAMU) and at the Disk Theatre that were both significant and crucial to me. I am trying to outline the course of my work on different parts and the obstacles I had to deal with. In this context I am focusing on the differences in the acting tools for different dramatic genres and how they apply to the selection of graduate plays at the Disk Theatre.
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Stress in acting
Bartoš, Vojtěch ; HLAVICA, Lukáš (advisor) ; TÖPFER, Tomáš (referee)
Main topic of this thesis is psychological stress of an actor during his performance. Thesis describes psychological stress in general, shows categorization, determines its causes and reactions of body exposed to stress during long and short timeload. Special attention is dedicated to stress management (coping) and to mechanics of its intervention and prevention. Stressing working conditions and actors personality traits that can reduce or increase stress are researched on this theoretical background. Some of most casual stress phenomena are analyzed. Also reflection of the nature and importance of stress in acting is presented.
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The economic importance of energy in the Czech Republic
Štěpánková, Nicole ; Urbánková, Erika (advisor) ; Jitka, Jitka (referee)
The aim of this thesis is to evaluate the economic importance of energy in the country. Along with this theme are reviewed macroeconomic indicators, which are compared with some of the attributes of the energy sector, so that they can assess their significance and coherence. Impact on GDP is reviewed in terms of electricity production, and also by means of the export of electricity. Impact of energy on the unemployment rate is evaluated from the perspective of people employed in the field of energy. The overall trade balance is evaluated in terms of import and export of electricity and natural gas. Finally, assessment of inflation through the development of prices of both commodities in the wholesale market. To evaluate these indicators are used statistical methods such as regression and correlation analysis. In conclusion, the thesis explains predetermined hypothesis and comprehensive assessment of the actual importance.
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The trends of spending leisure time in Náchodsko region (a comparative study in the rural area)
Kozáková, Helena ; Hudečková, Helena (advisor) ; Tomáš, Tomáš (referee)
Free time in today's life is becoming more and more important. The development of modern society and specialization of labor market today divides more obviously time for responsibilities and pastime. Leisure time is a very individual matter and its form is dependent on many aspects. Age and the size of the place of residence belong to those aspects that influence spending our free time. The relation between them became the core topic of this thesis. The practical part is based on my own research in three urban areas of different size in Nachod district. The research analyses the offer of free time activities as well as the attitude of the inhabitants in relation to their age and the size of town. The core task of this practical part was to look for any causal links. Deeper analysis shows that there is a certain coherence between the age of inhabitants, the size of their town and the style of spending leisure time, nevertheless this influence is not very significant. It is above all a very individual matter.
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Internal audit and its importance in the company
Vašíčková, Kristýna ; Vokáčová, Lucie (advisor) ; Kala, Václav (referee)
The aim of this work is to evaluate the usefulness of internal audit in a specific organization, which is focused on information and communication technologies. The first part of the document describes theoretical background obtained by comparation literature and Internet sources analyzing. There is also described the history of the internal audit, its importance and development, the progress of the internal audit, the final report, the types of internal audits and the difference between internal and external audit.. The second section contains conclusion of practical activities based on specific company. In the beginning, there is description of internal audit and control department, which was observed over a certain time interval. It was being studied what types of internal audits are performed in the company, how the audits are carried out, findings and deficiencies identified during internal audits and cooperation among internal and external auditors. and comparison between practice and theory. The conclusion is compared with the theory and practice of the evaluation of the situation and the internal audit function in the company. It is assessed that the internal audit in this particular company has its justified place. Their contributions are mainly in saved costs and detect errors in working practices. They were recommended only two possible improvements for a better functioning of the department. The management was advised to set up an audit committee, for greater independence of the internal audit. The second recommendation resulted from the interviews with the auditors regarding their education, where there is great potential for improving a company should consider investing in this area.
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Qualitative and quantitative analysis of clay soils
Šašek, Petr ; Viani, Alberto ; Mácová, Petra
Smectite-to-illite conversion is an important mineralogical reaction that occurs during the diagenesis ofargillaceous sediment. Illite–smectite clay minerals are ubiquitous in sedimentary basins and they have been linked to the maturation, migration and trapping of hydrocarbons, rock cementation, evolution of porewater chemistry during diagenesis and the development of pore pressure. But, despite the importance of these clays, their structures are controversial. By combining layers of octahedra and tetrahedra several types of layered structures may be produced, which can form various types of clay minerals in nature. Clay minerals are divided into three main groups: kaolinite, smectite and illite. The aim of the study was to qualitatively and quantitatively analyse the clay minerals in soil samples and identification of unknown mineral found by exploration works. For this purpose XRD, Raman spectroscopy and SEM were employed.
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Output-Inflation Trade-off After a Quarter of a Century of Inflation Targeting
Kamarád, Martin ; Potužák, Pavel (advisor) ; Kadeřábková, Božena (referee)
This thesis estimates the treatment effect of inflation targeting adoption on inflation, inflation variability, output, and output variability for 25 explicit inflation targeting countries. I implement the propensity score matching methodology that takes into account the problems of non-experimental nature, such as selection bias or selection on observable, and allows me to effectively mimic properties of randomized experiment and compute unbiased treatment effect estimates. I introduce a variety of propensity score matching methods that were recently developed in the treatment effect literature, including Nearest Neighbor, Radius matching, Kernel matching, and Inverse Probability Weighting. The results indicate that both industrial and developing inflation targeting countries exhibit lower inflation levels and at the same time higher output growth than non-targeting countries. The estimates are however in most cases statistically insignificant. Moreover, it appears that both industrial and developing countries achieve combination of lower inflation variability and output variability compared to non-targeting countries. Nonetheless, majority of the estimates are again statistically insignificant. The results are to a small extent sensitive to the choice of propensity score matching method. Radius matching with tight calipers (r=0.005, r=0.001) tends to provide the most reliable estimates. Balancing properties of the models are reasonable and compared to the previous research the standardised biases are quantitatively better.
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