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Symmetries of the CR sub-Laplacian
Vlasáková, Zuzana ; Souček, Vladimír (advisor) ; Slovák, Jan (referee) ; Šilhan, Josef (referee)
Title: Symmetries of the CR sub-Laplacian Author: Zuzana Vlasáková Department: Charles University Institute of Mathematics Supervisor: Prof. RNDr. Vladimír Souček, DrSc. Author's e-mail address: zuzana.kasarova@email.cz Supervisor's e-mail address: soucek@karlin.mff.cuni.cz Abstract: The aim of this work is to characterize the vector space of symme- try operators of the CR sub-Laplacian. To do this, we define a CR structure on some distinguished submanifold of Cn+1 (it is in fact the big cell in the CR sphere) and write down the CR sub-Laplacian on it. We also define the symmetries of the CR sub-Laplacian in general and using the ambient con- struction, which we introduce in the sequel, we construct all of them. Keywords: CR geometry, CR sub-Laplacian, symmetries of differential op- erator. 1
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Design of the central housing for very low turbocharger support - sideways oil output
Slovák, Jan ; Novotný, Pavel (referee) ; Knotek, Jiří (advisor)
This diploma thesis is about lowering installation height of turbocharger without significant increase of the oil pressure inside the housing at the piston rings. At the beginning of the thesis is research about supercharging and turbocharging, construction and parts that are placed inside a turbocharger. Next chapter is short brief about CFD. Further chapters are about design and changes at the central housing and about simulations. From simulations were the results obtained.
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Present Trends is Power Increasing of CI and SI Engines
Slovák, Jan ; Ramík, Pavel (referee) ; Dundálek, Radim (advisor)
This bachelor thesis is only the search character. In this thesis are described different types of engines, also are discussed the most common types of supercharging engines – by compressor and turbocharger. Along with them are showed less known methods of supercharging. At next chapter, thesis describes another possible methods of increasing of engine power like chiptuning etc. Last chapter is about near future and describes for example engine downsizing and hybrid cars.
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Mobile applications as a marketing tool
Slovák, Jan ; Pešek, Ondřej (advisor) ; Kozáková, Monika (referee)
This Bachelor's Thesis deals with mobile applications for smartphones and their use in marketing. The goal of the Thesis is to provide specific recommendations for use of mobile applications within the corporate marketing mix, based on an analysis of creation, usage and position of mobile applications as a marketing tool. The terms necessary to understand the subject are defined and described in the first part of the Thesis -- deciding on application development, the development itself, application support and its integration into corporate marketing. The second part consists of analysis of four different mobile applications. This analysis is based on semi-structured interviews with representatives of companies, combined with publicly available information gained from literature, Internet articles, analytic tools and social networks. The result of the Thesis is evaluation of application analysis and following recommendations for using mobile applications in marketing.
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