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Advanced Rendering in OpenSceneGraph Library
Ondruška, Jiří ; Přibyl, Jaroslav (referee) ; Švub, Miroslav (advisor)
This bachelor's thesis presents OpenSceneGraph library and its use with shaders written in OpenGL Shading Language. First of all it presents the basics of GLSL. Next chapter introduces the basics of OpenSceneGraph library. Following chapters are about different shaders. First is vertex displacement mapping, followed by cartooning and the last one is water surface.
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Power Factor Controllers for Switch-Mode Power Supllies
Gálus, Matej ; Steinbauer, Miloslav (referee) ; Murina, Milan (advisor)
The aim of this thesis is to design an active power factor correction (PFC) circuit for correcting a power factor of a switching power supplies. Various possible causes of bad AC mains power factor are discussed. Differences between linear and non-linear loads’ behaviour to AC mains are recognized and discussed. Various passive and active solutions for correcting current displacement and harmonic distortion are reviewed. Boost converter with quasi-resonant switching controlled by Texas Instruments’ UC3855 is chosen for highest total power factor for given power level against other topologies and its high efficiency and lower EMI against traditional boost converter. Various circuit parameters are simulated using PSpice. Complete circuit diagram for an 1kW output power level and worldwide mains voltage compatiblity is designed. After the device prototype was constructed, efficiency measurements were made and measured values are less than expected. This was apparently caused mainly due to absence of saturable reactor and implementation of resistive damping of the quasiresonant circuit’s parasitic resonance. Measured values of power factor are, however, very high and do meet the design expectations.
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Residents' Perceptions of Gentrification and Related Changes: a Study of Smíchov and Karlín
Columby, Nikola ; Ouředníček, Martin (advisor) ; Kubeš, Jan (referee)
Gentrification is an urban process gone global with many permutations and local specifics. This master's thesis analyses how residents are perceiving gentrification in rapidly developing, post- industrial, inner-city neighbourhoods of Prague - Smíchov and Karlín. The thesis is based on the concept of gentrification as planetary phenomenon that is anchored in a post-socialist context of contemporary Prague. The integral process of displacement is understood as direct but also symbolic, as an attachment to one's neighbourhood. Perception, an individual's filter of understanding and dealing with the world, is used to capture nuances, experiences, and feelings. Using interviews, the thesis seeks to answer the following questions using the underutilized perceptions of regular citizens. How are residents perceiving gentrification and the related changes? Where are residents placing gentrification? Are these findings the same in Smíchov and Karlín or are there differences in the perceptions? Gentrification and displacement are palpable urban processes that the respondents perceive as having changed the neighbourhoods in an impactful way. Karlín is seen as gentrified, whereas in Smíchov the situation is more nuanced. The group most clearly identified as being displaced are the Roma. The gentrifiers are...
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More-than-human cohabitation: gentrification, displacement and belonging
Dědková, Linda ; Lorenz - Meyer, Dagmar (advisor) ; Kolářová, Kateřina (referee)
More-than-human cohabitation: gentrification, displacement and belonging Linda Dědková This thesis examines displacement and gentrification, using the example of the department store Karstadt at Hermannplatz in Berlin. The ecofeminist critique of the binary division between nature and culture is central to my argument that gentrification and displacement are influenced by complex natural-cultural processes. The thesis utilizes a combination of ethnographic fieldwork, interviews, and affective reading of historical materials to investigate the historical interlinks between the construction of the Karstadt department store in the 1920s and the present-day situation. I argue that gentrification surpasses the architectural and demographic transformation of a neighborhood and is often rooted in intersectional oppression. Furthermore, displacement encompasses intricate more-than-human relations and processes, such as ways of shopping, and destroys complex local ecologies. Lastly, the agency of materials has a direct influence on the transformation of neighborhoods. The findings demonstrate that non-human agents can play crucial and dynamic roles in the interconnected economic, cultural, and ecological processes that facilitate gentrification. Key words: more-than-human relationships, gentrification,...
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Expulsion of German population from the Znojmo region
KUŘÁKOVÁ, Lucie
The bachelor thesis deals with the relations between Czechs and Germans from 1918 until the end of the Second World War. It is a rough outline of the political developments in the Czech territory that influenced these relations. The thesis focuses on the course of Czech-German relations within the national framework and then moves on to the events in the territory of Znojmo. I have included in my work the memories of Czechs who were expelled from the border region after 1938. As a twist, I presented the fate of two gentlemen of German nationality living in Znojmo until the end of the Second World War. In addition to this, I mention the operation of labour camps in Znojmo and the subsequent transport of German citizens.
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Methodology for Determining the Dynamic characteristics of a Turbocharger Pneumatic Actuator
Hálek, Dominik ; Kocman, František (referee) ; Novotný, Pavel (advisor)
This diploma thesis is dealing with design of Methodology for Determining the Dynamic characteristics of a Turbocharger Pneumatic Actuator. Pneumatic Actuator is used as a control mechanism in turbocharged internal combustion engines, which affects the engine performance, efficiency and fuel consumption. Main aim of this thesis is to develop a systematic comprehensive procedure for collecting and analysing measured data of dynamic behaviour of this actuator. In the first part of the thesis, an experimental method is designed and implemented to measure the data required to analyse the dynamics of the actuator at different variations of pressure, displacement and frequency settings. A measurement chain with appropriate sensors is built and a software environment for data acquisition and storage is developed. In the second part of the thesis, the experimentally measured data are evaluated using mathematical model in Matlab software environment to extract stiffness and damping values from measured data and determine their dependence on frequency, pressure and displacement.
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Torsion of beams with a non-circular cross-section
Hablák, Ján ; Majer, Zdeněk (referee) ; Profant, Tomáš (advisor)
The bachelor’s thesis focuses on the issue of torsion of prismatic bar with a non-circular cross-section, its model in various software, calculation and comparison of real measurements with calculated values. The aim of the work is to get acquainted with the basic theoretical knowledge, which will subsequently be applied in the modeling and calculation of specific closed profiles. Individual results are compared in the thesis. Basic concepts and knowledge are explained in the theoretical part. The practical part deals with the calculation of individual cross-sections and practical measurement.
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Historical cultural landscape of the deserted settlements in the Kaplice region
Baramová, Magdalena
The open landscape of the former district of Kaplice, situated between the Bohemian Forest and Gratzen Mountains on the Czech-Austrian border, has stimulated economic and cultural exchange between the two territories since prehistoric times. From the second half of the 13th century until the events after the Second World War, the region was predominantly inhabited by German-speaking population, but after the displacement the area underwent a turbulent development. Within a few years, socio-demographic changes have got imprinted in the landscape, and today several overlapping phenomena can be observed, which together reflect the process of transformation of the area. At the beginning of the 1950s, many settlements disappeared as a result of under-population and the construction of the Iron Curtain. Nevertheless, there are still remains of the use of the landscape by its former inhabitants, especially in the form of relics of buildings, religious architecture, roads, hedgerows, landscaping, waterworks and other traces. The securing of the national border has brought a further transformation of the landscape, which has had a devastating effect on the cultural heritage, but on the other hand it has helped to develop natural communities that are now protected. Even after the fall of communism, the region has not reached the population of the pre-war period, so the absence of settlement continues to give the area a unique genius loci. However, the cultural and historical values of the landscape are not yet protected on a basis, therefore the paper seeks to introduce the values and emphasises the need to protect them.
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Displacement of the German population from the Chřibská valley. The course, consequences and reflection in contemporary sources and the stories of witnesses.
Zdražilová, Hana ; Hlaváček, Jiří (advisor) ; Wohlmuth Markupová, Jana (referee)
The aim of this thesis is to map the course of the displacement of the German population from the Chřibská valley after the World War II. and its consequences for the development of the area's significance. The thesis is based on the study of archival sources, contemporary press, available scientific and regional literature and interviews with witnesses using the Oral History method. The interviews were conducted with those who were forcibly evicted or who could or had to stay, and those from among the new settlers. The aim of the work was also to get a general overview of the recorded testimonies from the region and the existing links between the current and displaced populations. The contribution of the project would be a micro-historical probe into the development of life in one valley against the backdrop of historical events, and to capture the experiences and stories of the memorialists for posterity. Keywords: displacement; marches; transports; settlement; demolition; micro-history
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