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Changes of rainfall-runoff conditions and anthropogenic modification in Lomnice River basin
Bažatová, Tereza ; Šobr, Miroslav (advisor) ; Langhammer, Jakub (referee)
The runoff from a landscape is a natural process which is very complicated. It's not simple to express the runoff process in general because it depends on many factors that participate more or less in its course. The main aim of this paper is the explanation of rainfall-runoff process in Lomnice River basin, the land use changes description and the evaluation of anthropogenic modifications of Lomnice River. All of these elements influence the course of hydrological extremes. Another parts of this thesis concentrate on floods (especially flood 2002) in the Lomnice River basin and on water systems of Blatensko which is the third largest of all water systems in the Czech Republic. The relationship between a rainfall and a runoff in Lomnice River basin is being assessed with the help of the simple- and double-mass curve method, regarding possible changes caused by anthropogenic impacts. This part contains the analysis of trend in development of land use, the analysis of air temperature and snow parametres as well. Great anthropogenic changes of river channels and river floodplain can evoke dramatic geomorphological effects. The methodology of research - anthropogenic modifications of Lomnice River is based on a field survey of anthropogenic transformation of a riverbed and river floodplain. Then the...
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Spacetimes with photon rockets
Kolář, Ivan ; Podolský, Jiří (advisor) ; Krtouš, Pavel (referee)
In this work we study exact spacetimes that represent the gravitational field of a localized object accelerating due to an anisotropic emission of photons - pho- ton rocket. First, we describe general properties of the Kinnersley and the Bonnor rocket, which both belong to the family of Robinson-Trautman spacetimes. Sub- sequently, we summarize two main approaches to the study of asymptotically flat spacetimes: the Bondi-Sachs and the Penrose methods, combined and modified by Tafel and Pukas in recent papers. We compare the mass aspect of the Robinson- Trautman spacetime obtained by both methods, and generalize thus the relation found by von der Gönna and Kramer. Next, we calculate the energy-momentum vector, the Bondi rest mass, and the "news tensor for the arbitrarily moving Kin- nersley rocket. By using these results, we naturally define the velocity vector of the rocket with respect to the Minkowski "background spacetime. We conclude with the physical interpretation of the Kinnersley rocket in various reference fra- mes.
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Horizons and ruins. The visible and invisible in the early modern visual culture
Hájek, Václav ; Konečný, Lubomír (advisor) ; Wittlich, Petr (referee) ; Lahoda, Vojtěch (referee)
My thesis deals with one specific pictorial motif from nineteenth century (horizon contra ruin) which represents and brings questions into an early modern visual culture. The visual culture includes a set of representations (artefacts, mass images, visual signs etc.) and also methods of a visual perception and reception. This text has an objective to watch, how is a concrete historical variant of the visual culture by reflexive manner reflected and construed in visual artefacts themselves (in a relevant theoretical context).
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Postnatal dynamics of thyroid hormones in lambs
BURLEOVÁ, Barbora
The aim of my work was to monitor and valorize of postnatal dynamics of thyroid hormones, thyroxine (TT4), triiodothyronine (TT3) and its free fractions (FT3 and FT4), in lambs up to 60 days of age. During the experiment 26 lambs were devided into two groups according to sex and were supplemented by iodine in concentration 0,7 ? 5 mg. Standard directed day ration for sheep is average 0,3 mg of iodine in 1 kilogram of dry mass (DM). One of the groups was also supplemented by selenium in concentration 0,2 ? 0,4 mg in 1 kilogram of DM.
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Extent and origins of inequalities in the access to continuing education
Visinger, Radek ; Krištofová, Zuzana (referee) ; Kopecký, Martin (advisor)
In my dissertation I deal with the problem of persistent educational inequalities. The participation in continuing education determine to a great extent one's life opportunities. That's why the promotion of equal educational opportunity is so important. The decision made in order to reduce social inequalities by means of education should be based on an argument that reproduction or intensification of these inequalities constitutes unfairness or even discrimination in the use of individual social rights. There's no freedom when deprived of an available alternative and furthermore it isn't morally admissible to handicap however a person by admitting criteria different from degree of capacity and individual effort. Moreover I call attention to some fateful consequences of the extension of market strategy into the field of education and I analyze different theoretical approaches to redistribution in order to put everybody on an equal footing with the access to education. In the third part I dissert upon principal sociological theories which try to explain the genesis and the probable reproduction of educational inequalities. I draw attention to the meritocracy principle, different theories of reproduction of educational structure and to the rational choice theory. The free access of masses to the superior...
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Czech and Austrian feature film 1939-1945: propaganda, collaboration, resistance
Kašpar, Lukáš ; Kuklík, Jan (advisor) ; Kvaček, Robert (referee) ; Harna, Josef (referee)
Anglicke resume Throughout my thesis, I have strived to portrait the feature film production and manifestation of collaboration and resistance in the field of Czech and Austrian feature film as comprehensively as possible. I have attempted to answer the question, whether the Nazis misused this mass media. After the occupation, Czech cinematography was being taken over by the Nazis. There are two main trends in movies prevailing at the time. The first one is stressing the national traditions and expecting that this will be favourably received by the public. The second trend represents an obvious escape of a number of movies, especially conversation comedies. If we look at the emphasis on national traditions in terms of the reaction by cinema audiences or through the eyes of the reaction in the press, their importance seems to be extremely significant. The escape and amusement of movies should be viewed in the context of the intentions of the Nazi propaganda. Then we can say that, it was about much more than an escape from the routine drudgery of the protectorate life, it was also about intentional relaxation, which was supposed to facilitate regeneration of energy necessary for a problem-free functioning of the protectorate. Feature film passed by censorship was in this sense an inseparable part of the...
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Dynamics of young stars in the Galactic nucleus
Haas, Jaroslav ; Šubr, Ladislav (advisor) ; Mayer, Pavel (referee)
As observations show, there are two coherently rotating structures of a few tens of young stars in the centre of our Galaxy close to a supermassive black hole. One of them contains a very dense star cluster, so-called complex IRS 13E. There are some speculations there might be an intermediate mass black hole with mass of the order of 103 -104 M in its centre. Using numerical simulations of the stellar dynamics in the dominant potential of Sgr A* disturbed by IRS 13E and a spherically symmetric cluster of old stars, which is believed to be there too, I have set upper limits on the masses of both disturbers, which guarantee, that the disturbers' presence cannot be of a destructive inuence on observed conguration of the system. It comes out that the incidence of the spherically symmetric star cluster is very stabilizing. My results show that the upper mass limit of the IRS 13E can be an order of magnitude higher, when the spherical cluster is considered (6 × 104 M) in comparison to the case, when it is omitted (4,5 × 103 M).
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Pyramid causeway in the Old Kingdom: evolution of the architecture and definition of the relief decoration program
El - Awadí, Tárek Mohamed ; Verner, Miroslav (advisor) ; Bárta, Miroslav (referee) ; Charvát, Petr (referee)
In the spring of 1994, an unexpected discovery to the North of the upper part of Sahure's causeway changed the long established belief that the mortuary complex of Sahure was excavated completely by L. Borchardt.1 Four huge limestone blocks decorated in basrelief of the highest quality bearing unique polychrome scenes were discovered during that spring, proving Borchardt's excavations of Sahure's complex were incomplete. These four blocks were evidence that more decorated blocks and fragments were still under the masses of sand surrounding the upper part of the causeway which had never been investigated by Borchardt? This surprising discovery was the result of cleaning being done in the area in preparation to open the Abusir necropolis for tourists. The work was under the supervision of Zahi Hawass. Hawass stopped the work at Abusir and reburied the blocks after they were photographed and drawn with the help of the Czech mission working at Abusir. Only a preliminary report was published by Zahi Hawass and Miroslav Verner to present the discovery to scholars.3 In their report, a survey of the causeways from royal funerary complexes was performed to alert scholars that many causeways are partially or completely unexcavated and need to be given more attention.4 In 2002, the present author was trusted by Hawass...
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Analysis of the meat performance of Sumava sheep in herd Michlova Huť
NOVÁKOVÁ, Iva
At the present time in Czech Republic we can see a growing number of sheep farming focused on meat performance. Sheep´s meat has a high quality and we can expect much higher demand for this product in the future despite its minimal present consumption in Czech Republic. Predominant concentration on meat performance of sheep is caused by sheep farmers through several factors that are modesty of meat breed, relatively easy farming technology and a wide range of marketing opportunities. At the same time it´s possible to combine this breeding way with the breeding of other animals and with various profit-making activities. The goal of this Bachelor thesis was an analysis of the meat performance level in herd of Sumava sheep in Michlova Huť. For this purpose I used information from the year 2009, 2010 and 2011, from which I deduced conclusions about this Sumava sheep farming. Based on these results the basic breeder recommendations to breeder community were deduced. Based on this analysis I found out, that the greatest average daily mass increase reached lambs in the year 2010 while the smallest values were noted in the year 2011. Concretely we see than the value of meat performance 216, 39 g/day in 2010 and the value 161, 25 g/day in 2011. The next conclusion is that there was no significant influence of paternal line on lamb´s meat performance during the observed period (2009, 2010 and 2011). Breed´s economy is on this farm very advantageous because there is the sheep farming combined with the raising livestock and other different services in the agriculture part. At the same time there are preferred the long-term strategies connected with the effectiveness and productivity of labour on farm Michlova Huť.
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Planet Earth – Global Batch Bioreactor.
Hanika, Jiří ; Šolcová, Olga ; Kaštánek, František
Planet Earth, precisely speaking its surface shell, might be considered as a huge, multiphase, batch, biochemical reactor heated by Sun, whose energy is a unique resource. The Sun ensures our earthly life uncondicionally; moreover, it compensated the heat losses of the land, water and ice by radiation emitted from the Earth surface to its surrounding space at night. It is evident that in this macro-reactor the complex transport phenomena occurs in phases;involving mass, heat and momentum. Obviously such a responsive batch system can be only limited by resouces of carbon materials utilized in energy produstion for industrial and chemical processes.
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