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Fragments of the mosaic of the society of the Protectorate Bohemia and Moravia
Doležal, Jakub ; Kuklík, Jan (referee) ; Šouša, Jiří (advisor)
This graduation thesis consider The Protectorate Bohemia and Moravia period in socalled political division Sedlčany and in example of this region try sketch large and plastic 398 painting of the society of the Protectorate Bohemia and Moravia. This painting is outline through the multiple-case study, or particular case studies, which objects are concrete social subjects, that lived in this period. These cases are not described only separately. In each of them are observed collective questions, which are compared and summarized at the close. These questions are: question of freedom of each social subject, predestination of his social position and his story in connection with belonging to proffesion, interest, ethnical and other typically and specifically social group, followed by question of universal and partial changes in this period, below continuousness and discontinuousness of the German occupation epoch with previous period. It is connected with the question of specifically living conditions of this epoch. Consequently are observed problems of resistance and collaboration, persecution (not only "Germans" but also "Czechs"), daily life in atmosphere of controlled war economy and ejection of the part of the so-called political division Sedlčany in consequence of foundation of SS military exercising...
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Nastavení vlhkosti v ESEM
Autrata, Rudolf ; Jirák, Josef ; Špinka, Jiří
Possibilities of humidity adjustment and measurement in the specimen chamber of the environmental scanning electron microscope (ESEM) at low pressure are described in this work. Optimal pumpdown sequence and filling-in of water vapors to the specimen chamber problems are solved simultaneously. Suggested cycle serves for obtaining of suitable environment in the vicinity of the examined specimen and can be exploited for observation of battery mass structures in the process of their utilization.
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Matematická analýza a výpočtový algoritmus Rayleighovy-Plessetovy rovnice v okolí prudkého kolapsu bublinky.
Petrík, Peter ; Maršík, František (advisor) ; Rudolf, Pavel (referee)
The Rayleigh-Plesset equation is commonly used to describe the dynamics of spherical bubbles in water. However, as high-speed observations show, the bubble looses its spherical shape during the violent collapse and often ssions into a number of smaller bubbles before it rebounds again or dissolves completely. The objective of the work is to bridge the gap between the \spherical\ Rayleigh-Plesset approach and the \non-spherical\ behavior of the collapsing bubble in conditions when the Rayleigh-Plesset equation is no longer valid. The objective is achieved in 3 steps. First, the new criterion for the assessment of the reliability of the Rayleigh-Plesset equation is proposed. Second, the analysis of the shape stability of the spherical surface of the bubble during the collapse lead to the development of a physical model, which incorporates the loss of shape stability, surface energy dissipation and the ssion process. Moreover it estimates the number of bubble fragments as well as conditions when the ssion occurs. Finally, theoretical results are incorporated into the complex numerical code, with the focus on error estimation, specially propagation of rounding error. The sample numerical results for typical hydrodynamic cavitation situations were calculated. The results of this work have to be further con rmed...
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Study of relation between conditions of the test FNCT (Full Notched Creep) and the rate of crack grow SCG (Slow Crack Growth) for evaluating HDPE cut growth resistance
Porubský, Tomáš ; Sadílek, Jiří (referee) ; Petrůj, Jaroslav (advisor)
Theoretical part of this thesis presents summary of material and testing parameters which influence SCG and consequently the duration of the FNCT test. The experimental part focuses on modification of testing conditions of FNCT test in order to minimize the test time. FNCT tests were performed for four types of surfactants: Arkopal N110, Sodium dodecylbenzensulfonate (NaDBS), Disponil LDBS55 and Simulsol SL8. The most pronounced accelerating effect was observed for NaDBS surfactant, which in comparsion with commonly used Arkopal N110 doubled the test speed at the same concentration (11 %) and other test conditions. The accelerating effect of NaDBS was also observed for two different PE grades: Liten VB85 and VL 20N. Under the test conditions 80 °C and 4 MPa, 5% NaDBS water solution caused for VL 20N almost 12,5-fold acceleration compared to conventional 2% Arkopal N110 and almost 8,5-fold acceleration for VB 85. The correlation between wettability of surfactant solution and FNCT time to fracture was found.
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Studium expandujícího proudu termického plazmatu s využitím molekulových spekter
Mašláni, Alan ; Sember, Viktor
Thermal plasmas generated by plasma torches are well-known for their high temperatures and high enthalpies. Therefore optical emission spectroscopy is appropriate diagnostic method because of strong emission of radiation corresponding to the visible light. The decay of excited atoms, ions and molecules causes emission of the light at characteristic wavelengths. Except spectral lines of atoms and ions, also some molecular bands can be seen in the spectra of the plasma jet. Especially expanding thermal plasma jet operated under low pressure conditions offers possibility of observing molecular transitions. Pressure lower than atmospheric may cause the presence of supersonic flow and departures from thermodynamic equilibrium. Spectra of OH radical have been investigated using computer code LIFBASE, which contains a lot of data regarding spectra of diatomic molecules. Radial profiles of rotational and vibrational temperatures have been found in several regions of the jet.
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Zkušenosti s měřením reflexních vrstev u zrcadel používaných pro projekt Pierre Auger
Pech, Miroslav ; Hrabovský, Miroslav ; Schovánek, Petr ; Křepelka, Jaromír ; Palatka, Miroslav ; Nožka, Libor ; Mandát, Dušan ; Rössler, T. ; Řídký, Jan ; Boháčová, Martina
The Pierre Auger Observatory is designed for study of the universe's high energy particles, which evolve in the high layers of the atmosphere, where an elementary particle strikes with energy above 10.sup.19./sup. eV (1.6 J!). However, there is no scientific consensus about cosmic ray origin. The Auger Observatory is projected to gather the data needed to solve that puzzle. One of the detection technique is to observe these showers by fluorescent detectors, which are able to record the cascade development where the secondary particle causes atmospheric nitrogen to fluoresce.
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Applications of stochastic processes in finance
Haman, Jiří ; Beneš, Viktor (advisor) ; Dostál, Petr (referee)
In this thesis we consider a stochastic volatility model based on non-Gaussian Ornstein-Uhlenbeck process (see also Barndor -Nielsen and Shephard [1]) where the logarithm of an asset price is the solution of a stochastic di erential equation without drift. The volatility component is modelled as a stationary, latent Ornstein-Uhlenbeck process, driven by a non-Gaussian Lévy process. We perform Bayesian inference for model parameters by means of Markov chain Monte Carlo algorithm based on data augmentation. The algorithm corresponds to a standard hierarchical parametrization of the model. The aim of this thesis is to express the unobserved stochastic volatility process for observed asset price. The algorithm is applied to the simulated and real asset price where real asset price is US dollar (USD) - Pound sterling (GBP) exchange rate.
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Cluster studies in molecular beams
Profant, Václav ; Kužel, Petr (referee) ; Dian, Juraj (advisor)
In the present work we study properties of clusters of small heteroatomic molecules with biological relevance by several experimental methods based on molecular beams. In the rst experiment structure and dynamics of size-selected charged pyrrole clusters have been studied by means of molecular beam scattering experiment. Small neutral P yn clusters were produced in Py/He expansions and larger mixed P ynArm clusters in Py/Ar expansions, and the scattering experiment with a secondary beam of He atoms was used to select the neutral clusters of dierent sizes. The complete size-selected fragmentation patterns for the neutral dimer to tetramer after an electron impact ionization at 70 eV from the measurements of the angular and velocity distributions at dierent fragment masses. In second experiment photolysis of size selected pyrrole, imidazole and pyrazole clusters has been investigated. Comparison with the photolysis of an isolated molecules and between studied systems has been made. Clusters were photolyzed at 243 and 193 nm and the kinetic energy distributions of the H-photofragments have been measured and analyzed. Finally the mass spectra of the fragments after multiphoton ionization have been measured. The signicant inuence of the cluster environment to the photolytic behavior was observed and discussed.
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Characteristics of the working behavior of Czechs and Ukrainians
BYKOVA, Sofia
The aim of this work is to create a transparent and comparable characteristics of the work behavior phenomenon within the cultures of those states - what is common and what is different between them, or maybe incompatible .It is supposed to have some analysis of possible conflicts and their connection with the mentality. The primary reason of this aim choosing is the specialty I study. My work contains information that could be interesting and useful not only for me and my future job, but also for managers and other employees. Overview of examined issues contains specific points, such as the fundamentals of economic psychology and behavioral economics (symbiosis of psychological and economic opinion on motivation and rationality of individuals), theories of motivation and reaction to different occurrence, characteristic of the term "mentality", general points about the human impact of the world economy. For realizing the goals of my work the following hypotheses have been proposed - Czech and Ukrainian mentality have significant differences, though these cultures are close. - Ukrainian and Czech employees are able to work effectively in a team and find a "common language" in the workplace. The difference in mentality does not obstruct on it. - Employers could be interested in the Ukrainian employees taking into account their high concernment and motivation. All three of the hypotheses were confirmed by observed data and comparison of mentality characteristics. Czechs are often tolerant to other cultures, moreover Ukrainian culture is not much different and does not create difficulties in the working relationship. Based on the fact that the chosen company has no conflicts associated with work behavior and differences in mentality, it's hard to define my contribution to this organization work.
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