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uP Signal Generator
Tesař, Jaroslav ; Bradáč, Zdeněk (referee) ; Kučera, Pavel (advisor)
In the first part of this work, the digital-to-analog conversion problem and the single-chip microcontroller problem are theoretically described. The HW design of the low-frequency harmonic waveform generator, which is controlled by a microcontroller, is described in the second part. The third part deals with the description of ways how to generate harmonic waveforms using a microcontroller and DA converters. Furthermore, it describes the firmware of the microcontroller. The fourth part presents achieved results and electrical characteristics of the designed generator.
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Methods for the determination of radiological impact of the food chains
Tesař, Jakub ; Bartusková,, Miluše (referee) ; Havránková, Barbora (advisor)
The diploma work presents comprehensive overview of methods of determination of radiological impact on food chains. It describes the determination of radionuclides in groceries in common radiation situation and in unusual radiation situation. Practical part of the work presents two model radiation events. These are radiation event in the territory of Czech Republic and radiation event in the territory of other country and its impact on Czech Republic. In the end both model situations are compared.
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Secondary materials from household waste and their position in the global market
Tesař, Jan ; Šomplák, Radovan (referee) ; Pavlas, Martin (advisor)
The barchelor thesis is focused on the issues of material recovery of municipal waste. The work presents the basic concepts of waste management and resource data to help analyze the current virtual situation in the field of waste management. Work specifies the components with the greatest potential for material recovery. For the selected folder, which can be commonly referred to secondary raw materials, work tries to describe the flow of materials and meet with their potential application in the market.
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Web server with ARM microprocessor
Tesař, Jan ; Vařacha, František (referee) ; Prokeš, Aleš (advisor)
Diploma thesis is dealing with design and implementation of the web server and manage- ment website in the developing kit FriendlyARM Mini6410 with installed OS GNU/Linux. The embedded packaging system PTXdist is described in terms of Kernel configuration and selection of suitable applications. The device should be later used for the remote management of atmospheric optical link.
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Risk analysis of DINA-HITEX, spol. s.r.o
Tesař, Jaroslav ; Srna, Martin (referee) ; Hanušová, Helena (advisor)
This Master´s thesis analyzes the risks that are currently part of the business. It is important that businesses regularly with the identification and analysis of risks and tried to eliminate this risk. The thesis will analyze the company selected methods, identification of risks arising from the analysis and proposed measures to reduce and eliminate these risks
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Fabrication and characterization of atomically thin layers
Tesař, Jan ; Kunc, Jan (referee) ; Procházka, Pavel (advisor)
Tato práce se zabývá oblastí dvourozměrných materiálů, jejich přípravou a analýzou. Pravděpodobně nejznámějším zástupcem dvourozměrných materiálů je grafen. Tento 2D allotrop uhlíku, někdy nazývaný „otec 2D materiálů“, v sobě spojuje neobyčejnou kombinaci elektrických, tepelných a mechanických vlastností. Grafen získal mnoho pozornosti a byl také připraven mnoha metodami. Jedna z těchto metod však stále vyniká nad ostatními kvalitou produkovaného grafenu. Mechanická exfoliace je ve srovnání s jinými technikami velmi jednoduchá, takto připravený grafen je však nejkvalitnější. Práce je také zaměřena na optimalizaci procesu tvorby heterostruktur složených z vrstev grafenu a hBN. Dle prezentovaného postupu bylo připraveno několik van der Waalsových heterostruktur, které byly analyzovány Ramanovskou spektroskopií, mikroskopií atomových sil a nízkoenergiovou elektronovou mikroskopií. Měření pohyblivosti nosičů náboje bylo provedeno v GFET uspořádání. Získané hodnoty pohyblivosti prokázaly vynikající transportní vlastnosti exfoliovaného grafenu v porovnání s grafenem připraveným jinými metodami. V práci popsaný proces přípravy je tedy vhodný pro výrobu kvalitních heterostruktur.
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The Students themselves - Student Center Poříčí
Klinkovský, Lukáš ; Tesař, Jan (referee) ; Mikulášek, David (advisor)
The subject of this work is urban and architectural design of buildings of a city in Brno or a new object. Solved plot is situated at the crossing of the road running along the embankment of the river and most Svratka radial direction to Vienna. Given the character of the building, which is designed as student housing, I proposed a simple and straightforward structure that does not exceed its scale neighborhood. The construction is possible someone may seem brutal and insensitive, but concrete is characterized by austerity, frugality, hard work and humble approach the student in preparation for his mission in life. It is not a palace, but the "monastery"for students.
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Reducing emissions of SO2 in the flue gas from the fluidized bed boiler
Tesař, Jan ; Jecha, David (referee) ; Brummer, Vladimír (advisor)
Aim of this thesis is to design a technology of a flue gas desulphurization of fluidized bed boiler. Currently, the state of technology is not able to provide flue gas desulphurisation to required level. For this reason it is necessary to build additional device for the desulphurisation. Theoretical part of the thesis deals with the emission limits of sulphur dioxide, available methods of desulphurization and sorbents suitable for the desulfurization. In practical part conditioned dry sorption method is chosen for the specified source, technological and structural design for suggested desulphurization technology including design of all device is proposed. The thesis also includes a technology design and a 3D model.
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Mechanical analysis of lift
Tesař, Jakub ; Kovář, Jaroslav (referee) ; Fuis, Vladimír (advisor)
The bachelor thesis deals with analysis of the system with seven solids with consideration of passive effect. In the first part of thesis describes the basics of statics and dynamics. Description of neutral and passive links, release method and reduction method. In the second part of the work are describing effects of passive effects on the movement state of the elevator. The individual bodies were released in the GeoGebra program. The aim of the example is to determine the contract forces in the links, check functionality of the links and state of motion. The solution took place in the computer program Matlab
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