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Severe accidents of third generation pressurized water reactors
Nečas, Karel ; Foral, Štěpán (referee) ; Černý, Tomáš (advisor)
The bachelor thesis focuses on the development of global nuclear energy. It clearly describes the development and division of nuclear facilities used for electricity production. The theoretical part of the thesis describes the division of nuclear facilities according to the development generations, the types are discussed in terms of technology and principle of operation. The operating conditions of nuclear reactors are described in detail, with emphasis on emergency conditions. The next part of the thesis focuses on the LOCA accident type for third generation pressurized water reactors. This thesis also includes an analysis of different approaches od the computation codes used for modelling various conditions of the nuclear power plants. The practical part of the bachelor thesis describes nuclear reactor APR1400. It provides its elementary parameters. The calculation code MELCOR was used for modelling this type of the nuclear reactor. The sensitivity analysis of the severe accident was performed using selected parameters. This analysis describes the influence of these parameters on the hydrogen production, the process of damaging of the active zone, and the reactor vessel melting time.
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Position of Airpower in Contemporary Strategy
Černý, Tomáš ; Střítecký, Vít (advisor) ; Ludvík, Jan (referee)
This thesis deals with the current role of airpower in contemporary warfare. In last 100 years, the aircraft became an indisputable part of today's armed conflict. The aim of this work is to determine the mechanics behind airpower's functions in conflicts and to critically assess airpower's performance. The analyzed conflicts - Persian Gulf 1991, Kosovo 1999, Afghanistan 2001 and U. S.-led counterinsurgency campaigns in Iraq and Afghanistan - provide the diversity that is needed to reveal the position of airpower in contemporary strategy. The thesis is divided in three parts. The first part follows the evolution of airpower and its theory, providing context to further analysis of contemporary environment. The second part of the thesis identifies key theoretical concepts and modalities connected to airpower and analysis them on a general, theoretical basis. The third part of this thesis applies the concepts and modalities on the picked case studies in order to reach the suggested objectives by analyzing the conflicts and deriving empirical data. The conclusions of the thesis suggest that while slightly exaggerated, airpower grew to vital importance and became one of the key elements in today's conflicts.
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Spatial distribution of financial grants for municipalities in the region of Nuclear power plant Dukovany in focus of regional development
Černý, Tomáš ; Hána, David (advisor) ; Přidalová, Ivana (referee)
Spatial distribution of financial grants for municipalities in region of nuclear plant Dukovany in focus for regional development Abstract The aim of this paper is to determine spatial distribution of financial grants for municipalities in region of nuclear plant Dukovany in view of regional development by an analysis of income part of municipalities budget and data of financial gifts by Nadace ČEZ and data provided by representatives of the nearest municipalities of nuclear plant. The first part brings methodical framework of importance of financial incomes of the municipalities for regional development. The second part introduces socioeconomic conditions of surroundings of the nuclear plant Dukovany and also types of financial support of ČEZ company. Paper continues to analysis of incomes of municipalities and the first part of the hypothesis is verified. The second part of hypothesis and research questions is checked and answered in the fourth part, where financial gifts acquired by the nearest municipalites of the nucelar plant Dukovany are presented. The conclusion summarizes this paper and the hypotheses are evaluated. Keywords: municipalities incomes, grants, financial gifts, regional development, periphery, Czechia
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Influence of understory light on diversity and composition of forest vegetation in the České Středohoří Mts.
Macek, Martin ; Kopecký, Martin (advisor) ; Černý, Tomáš (referee)
Light is essential component of forest ecosystem, as limited light availability in forest-floor restricts herb and tree seedlings growth. Importance of light availability for maintaining plant species diversity and community structure wasn't sufficiently evaluated in the Czech Republic. This study focus on the ecological relevance of light availability on both landscape and local scale. Relationship of light to cover, diversity and species composition was quantified in the thesis. Dominant tree species affected light availability and its spatial variability. Light availability was along the soil reaction and slope most influential factor for large-scale species diversity. Within-site light variability affected plant diversity more than soil reaction variability. Measuring light by means of hemispherical photography seems to be an appropriate for studies like this. Light availability influnence on community compostition is weak in comparison with other environmental gradients.
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Vliv extrémních hodnot stájového prostředí na mléčnou užitkovost dojnic českého strakatého plemene skotu
Černý, Tomáš
The aim of this thesis was to analyze the climatic factors affecting the behaviour and milk production of the Czech pied cattle breed. The observation was carried out in the Czech Republic in period of 12 months (from April 2010 till March 2011). The observation took place on a farm GenAgro in Říčany a.s. in the South-Moravian region (49°12´30.370´´N, 16°23´43.092´´E). The subject, which was observed, was one concrete section in a production stable a quarter of the stable (n = 98 dairy cows). The dairy cows were in different stage of lactation (from 30. day) and on a different sequence of lactation (1 to 8 of lactation). The total number of observed cases was 4935 cases. The statistical evaluation was performed in the program STATISTICS 10.0 (Chi square test). There were 103 comfortable stalls (cubicles) in the stable located in three rows. Row A the closest one to the feeding table (32 cubicles); row B approximately in the middle of the whole section (33 cubicles); row C closest one to the perimeter wall of the stable (38 cubicles).
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Shielding and detection of neutrons
Černý, Tomáš ; Šťastný, Ondřej (referee) ; Katovský, Karel (advisor)
The master’s thesis provides an overview of available neutron sources in terms of neutron yields and energy spectrum of emitted neutrons. Reactions of neutrons with matter, especially neutron scattering and radiation capture, are described. The possibilities neutron neutron detection and spectrometry are also described. The following experiment deals with a design of suitable shielding materials and the analysis of the moderated energy spectrum of neutron flux. The properties of the neutron field were measured using detection by activation. Subsequently, a simulation of the problem was performer in the MCNP program. In the end, the achieved results are compared and evaluated.
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Euroscepticism in Czech and German daily newspapers - analysis of the media portrayal of GDPR and EU
Černý, Tomáš ; Kasáková, Zuzana (advisor) ; Bauer, Paul (referee)
This thesis analyzes how the General Data Protection Regulation (GDPR) and the European Union was portrayed in selected Czech and German printed media throughout the year 2018 and investigates whether Euroscepticism - in its widest sense - expresses itself within the articles. The research on Euroscepticism in media so far has largely focused on "historic" events and "significant" questions of the European integration, not on technical-legal topics, i.e. topics with presumably lesser impact on the future course of the European project. An analysis of Euroscepticism in media texts dealing with a specific EU legislative act has so far been lacking. The paper at hand therefore examines whether Euroscepticism manifests itself also in connection to such topics. As denying and/or criticizing EU's policies is accepted by most academics as an expression of Euroscepticism, next to denying the EU as such, this study defines Euroscepticism as any criticism on part of the EU and the GDPR, since this regulation can be understood as embodiment of EU's policy on data protection. The paper uses a comparative research design, using the method of content analysis of six printed daily newspapers, namely Frankfurter Allgemeine Zeitung, Süddeutsche Zeitung, Bild, Mladá fronta DNES, Právo, and Blesk. The results...
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Verification of geometry influence on dynamic properties of immersed body
Černý, Tomáš ; Pochylý, František (referee) ; Habán, Vladimír (advisor)
Immersion of the body into the fluid creates additional effects which must be considered when designing the machines. Additional effects from the fluid influence the dynamic properties of the body. In this work the decrease of the natural frequency and the increase of the damping ratio during the gradual immersion of the body into the fluid are investigated. Diploma thesis is based on an experiment, which is performed on a series of flat strip steel components of various widths. The first three bending and first three torsion shapes of the free-hanging body are examined. Emphasis is placed on the influence of part width. In the next phase of the experiment, the influence of the proximity of the solid wall to the dynamic properties of the cantilever beam is examined. Further, the determination of the added density from the fluid is performed by modal analysis using the ANSYS software.
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