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Pixelated electrically small antenna
Turák, Samuel ; Kadlec, Petr (referee) ; Zechmeister, Jaroslav (advisor)
This bachelor thesis deals with the problematic of programming and implementation of binary evolutionary algorithms and their practical application for design of pixelated electrically small antenna for ISM band 868 MHz. Two binary evolutionary algorithms are introduced and implemented, both created in the programming environment Matlab. The basic antenna design and its optimization are performed by the program CST controlled by an in-house Matlab code. In the thesis, an empiric research of miniaturization and sensitivity of the electrically small antenna is conducted.This bachelor thesis deals with the problematic of programming and implementation of binary evolutionary algorithms and their practical application for design of pixelated electrically small antenna for ISM band 868 MHz. Two binary evolutionary algorithms are introduced and implemented, both created in the programming environment Matlab. The basic antenna design and its optimization are performed by the program CST controlled by an in-house Matlab code. In the thesis, an empiric research of miniaturization and sensitivity of the electrically small antenna is conducted.
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Operation Neptun - the turning point in perceiving the Czechoslovak television as communistic instrument of propaganda
Červená, Adéla ; Železný, Jakub (advisor) ; Suk, Pavel (referee)
- version - Adéla Červená This bachelor thesis focuses on the ground-breaking importance of the Operace Neptun in the perception of the media impact of Czechoslovak Television (ČST) by the communist regimes. Until this moment, this Operation is the only known case of the misuse of ČST before year 1968 as a tool of the contemporary propaganda and spreading of disinformation. The Czechoslovak intelligence has taken the advantage of the shooting of the show Zvědavá kamera from 1964 on the topic of the secrets of the Šumava lakes. In advance of the arrival of the publicists, they have placed boxes of allegedly Nazi documents on the bottom of the Černé jezero. The highlight of the Operation was the press conference led by the Interior Minister Lubomír Štrougal in September 1964. Would the lead actor of the Operation, Ladislav Bittman, not have emigrated, the truth would have potentially never been revealed. After the period of the Prague spring, with the rise of the normalization, the abuse of ČST as the transmitter of the current propaganda became a common practice. This work focuses on two shows of the given era - Causa Jan Masaryk and Svědectví od Seiny. The communist regime used these shows to settle the accounts with chosen representatives of the Prague spring and painted their own version of the...
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Radar cross section of passenger cars
Hanslík, Radovan ; Pítra, Kamil (referee) ; Raida, Zbyněk (advisor)
This diploma thesis is aimed at radar cross section of passenger cars. Basic scattering parameters of simple targets are described. Selected numeric methods used for computing radar cross section are discussed. Shape and size of simplified vehicle models is investigated. Simulations are verified by computing RCS of objects with well-known characteristics. Radar cross section of Skoda Octavia was simulated using selected numeric methods. Results of all performed simulations are shown in included graphs. Experimental measurment of radar cross section of a vehicle was performed so the measured data can be compared with the simulations.
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Radar cross section of passenger cars
Hanslík, Radovan ; Pítra, Kamil (referee) ; Raida, Zbyněk (advisor)
This diploma thesis is aimed at radar cross section of passenger cars. Basic scattering parameters of simple targets are described. Some numeric methods used for computing radar cross section are discussed. CST Microwave Studio is used for simulation of passenger car with two different solvers. For the results there are plots of radar cross section of a car for 1 GHz, 24.125 GHz and 33 GHz. There is a plot of visualized hotspots.
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Efficacy of combined dosing of coagulant and flocculant on wastewater sludge dewatering
Pániková, Kristína ; Novotná, Věra (referee) ; Hrich, Karel (advisor)
Sludge treatment and disposal are one of the most important parts of sewage treatment. These are economically challenging parts, and therefore emphasis is placed on effective dosing. The dose should be as small as possible but also the highest dry matter output. The main target of this diploma thesis is therefore to show that it is possible to achieve the same or better degree of drainage of the sludge if different flocculant/coagulant ratio is applied to the sludge. Diploma thesis deals with determination of the optimal combination of chemical doses during sludge dewatering. The thesis contains two parts, practical and theoretical. The theoretical part consists of research, overview of processed research and works in the area of sludge dewatering. The second part is a description of laboratory measurements and evaluation of results.
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Regional reporting of Czech Television in years 1992 - 2012 by internal staff
Krátká, Veronika ; Franc, Martin (advisor) ; Krátká, Lenka (referee)
The main aim of this work is to describe the history and development of Czech Television's regional news coverage in years from 1992 till 2012, using the testimonies of direct TV staff involved in this reporting beyond the available resources, thereby expanding the amount of information on this issue. To achieve this information, the oral history method was used and the subsequent verification of the information obtained was done using the literature, diploma theses, annual reports and other sources in this work specified. The result of this work is the extension and addition of new facts and information about the history of Czech Television's regional news, especially of internal character, not yet obtainable from available professional publications or public reports and data. These include information on the nature of interpersonal relations in regional news, the attempt to influence the outward processing and thematic focus of the editorial offices and the specific technical and structural development of individual regional editorial offices. Key words Czech Television, ČT, CST, narrator, reporter, regional news, regions, Večerník, Události, Události v regionech.
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Modeling the brain of a rat
Kuřátko, David ; Koudelka, Vlastimil (referee) ; Raida, Zbyněk (advisor)
This master’s thesis deals with creation and modification of several numerical rat’s brain models which are subsequently used in electromagnetic software CST Studio Suite 2014. The first part of the thesis is focused to insertion of exciting source to the model which depends on the used approach. These sources produce signals on the surface of the rat’s brain model which are then analysed. The experimental part of the thesis dealt with three different procedures of cooking agar jelly, which were used for creation of five plate capacitors, which subsequently served for measure electric properties of phantom. The conclusion of this master’s thesis is focused on comparison between results from simulations and experimental parts with a subsequent analysis of the deviations of results and their possible causes.
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The perspnality of czech sports journalism Tomáš Jungwirth
Pavelková, Eva ; Bednařík, Petr (advisor) ; Němcová Tejkalová, Alice (referee)
Tomáš Jungwirth was a major commentator of Czechoslovakian television since the late 70's to the beginning of the 90's. The aim of this thesis was to give reader a comprehensive view on Jungwirth's personality, work chronologically describes his professional development (whether athletic or commentatory). In the first chapter, because of understanding the various aspects related to it, briefly characterizes sports journalism, more attention is paid to the live broadcast. Without this basic knowledge I would not be able to understand the conditions in which Jungwirth worked, and creating other elementary knowledge, such as how is the profession of sports commentator perceived. The second chapter is devoted to Jungwirth's life before coming to the sports section of ČST - especially athletic career. Tomáš Jungwirth was (like his brother Stanislav) successful Czechoslovakian representative for middle-distance running. Years of racing experience he used in his later career. Work continues with the third part, which describes Jungwirth's working in television - from the admission to leaving ČST and carrying out the function of a superior of the sports section on private Kabel Plus. As a top of Jungwirth's career I mark commenting of the World Championship in athletics 1983 in Helsinki. An important part...
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3D textile integrated monopole
Füll, David ; Kufa, Martin (referee) ; Cupal, Miroslav (advisor)
This thesis deals with the design of omnidirectional monopole antennas. Using the parabolic reflector and the directors, the directional characteristics of monopole antennas are modified. This directional antenna, together with the omnidirectional antenna, examines the effect of various materials, the emission characteristics and the input reflection factor, near the antennas. These antennas are made of 3D textile, measured in anechoic chamber and compared to the designed antennas. At the end of the thesis is the summary and evaluation of the result.
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