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Design and realization of an optical receiver module for VLC purposes.
Grygar, Josef ; Vitásek, Jan (referee) ; Dobesch, Aleš (advisor)
This work is focused on free space optical communication in visible electromagnetic spectrum known as visible light communication (VLC). Basic parameters of standard IEEE 802.15.7, advantages and disadvantages are discussed in the theoretical part of this work. Furthermore, optical link and it´s parts are described. The largest part of the work is focused on design and simulation of optical receiver for visible spectrum. Selection of component, noise and SNR calculation is discussed as well. This work also includes calculation of power energy in different parts of optical connection, PCB design of optical receiver, transmitters and power supply and output board. Behavior and parameters of electronic circuits, components and optical connection are explored, measured and compared with theoretical values.
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Measurement of the optical intensity distribution at the far field
Vitásek, Jan ; Němeček, Jiří (referee) ; Wilfert, Otakar (advisor)
The topic of this master’s thesis is energy measurement of the optical intensity distribu-tion at the far field. Properties of the optical intensity and the optical power are described. In this thesis solution of wave equation is done. The plane wave, spherical wave and Gaussian beam are described. In this thesis, optical trace of laser beam from transmitter laser diode to receiver PIN photodiode is described. One of the solved problems is diffraction on the lens socket. The basic configuration for diffraction investigation on lens socket was created. There were transmitting laser diode, stop with circular apertures and PIN photodiode used in the experiment. In the other part, thesis deals with measuring and detection of the optical beam. Sorts of photodiodes and their characteristics were analysed.
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Laser subtitles projector
Remeš, Adam ; Vitásek, Jan (referee) ; Dobesch, Aleš (advisor)
The content of this work is the design and implementation of HW supported by SW for viewing subtitles into the movie, which translates from the projection equipment on 16 mm film, synchronizing subtitles with the movie, at the same time the work also addresses the issues of principle changes the distance of the canvas. Subtitles are loaded by using the SD card slot control by using the control, which is used to display graphics monochrome buttons that are also used for setting the device and its modifications.
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Web-Based Management and Lending System
Vitásek, Jakub ; Herout, Adam (referee) ; Špaňhel, Jakub (advisor)
Cílem této práce je analýza a implementace webového systému pro správu a půjčování zařízení, které uživatelům zprostředkuje přehled dat v systému a historii transakcí zařízení. Výsledná aplikace byla implementována v PHP s využitím Nette Frameworku, MySQL a AJAXu. V první polovině této práce je probrána analýza existujících platforem, popis jednotlivých fází implementace a seznam využitých návrhových vzorů. Druhá polovina pojednává o testování, využitých komponentách a jejich opodstatnění, a nakonec sumarizuje využitelnost implementovaného systému. Výsledkem této práce je implementace systému pro správu a půjčování zařízení, který uživatelům umožňuje vést efektivní evidenci půjčování položek.
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Surveying and documentation of part of route Cesta v Luzích (cadastral area Nuzířov)
Maňas, Jaroslav ; Vitásek, Josef (referee) ; Vondrák, Jiří (advisor)
Theme of Bachelor thesis is tacheometric survey of area that includes part of cycle path and contiguous Lubě stream with its joining into reference systems S-JTSK and Baltic Vertical Datum- After Adjustment. It was necessary to build up the survey net before survey works could even start. The net was created by GNSS method and polar method. Detailed survey was executed by a polar method as well. The outcome of these works is thematic map at a scale of 1:500 and also the experimental version of digital terrain model (DTM). Test of accuracy of the map was executed by checking profiles.
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Check leveling apparatus
Otrusinová, Jana ; Vitásek, Josef (referee) ; Soukup, František (advisor)
Subject of this bachelor's thesis is check of chosen levelling apparatus. First part of thesis is about leveling point field, methods of height determination, levelling instruments, levelling accessories and errors affecting leveling. Second part of thesis is devoted to the testing of leveling instruments and subsequent processing of test results.
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Tax competition in the European Union : No need for worries?
Vitásek, Jan ; Schneider, Ondřej (advisor) ; Urban, Luděk (referee)
High capital mobility creates headache in some of the European countries who afraid of potential race to the bottom in corporate taxes. They warn the tax competition can have a negative impact on tax revenues and redistributive motives of European governments. These concerns became more pronounced in the wake of the EU enlargement in 2004, when 10 mostly low tax countries entered the EU. Tax competition theories generally conclude there is a pressure forcing corporate tax rates downwards. Nevertheless, under certain conditions the race to the bottom does not have to materialize. Downward trend in corporate taxation is not confirmed by European reality either. Despite lower corporate taxes in new member countries enlargement has not so far led to erosion of tax bases. It is unclear, however, how corporate taxation in the EU will evolve in the following years, especially in face of new European Commission's plan to introduce Common Consolidated Corporate Tax Base (CCCTB) and ongoing process of economic catching-up by new member states. Powered by TCPDF (www.tcpdf.org)
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Check leveling apparatus
Otrusinová, Jana ; Vitásek, Josef (referee) ; Soukup, František (advisor)
Subject of this bachelor's thesis is check of chosen levelling apparatus. First part of thesis is about leveling point field, methods of height determination, levelling instruments, levelling accessories and errors affecting leveling. Second part of thesis is devoted to the testing of leveling instruments and subsequent processing of test results.
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Surveying and documentation of part of route Cesta v Luzích (cadastral area Nuzířov)
Maňas, Jaroslav ; Vitásek, Josef (referee) ; Vondrák, Jiří (advisor)
Theme of Bachelor thesis is tacheometric survey of area that includes part of cycle path and contiguous Lubě stream with its joining into reference systems S-JTSK and Baltic Vertical Datum- After Adjustment. It was necessary to build up the survey net before survey works could even start. The net was created by GNSS method and polar method. Detailed survey was executed by a polar method as well. The outcome of these works is thematic map at a scale of 1:500 and also the experimental version of digital terrain model (DTM). Test of accuracy of the map was executed by checking profiles.
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