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Citybike
Černý, Pavel ; Kloss, Ondřej (referee) ; Kaplan, Zdeněk (advisor)
Content of this diploma thesis is a construction design of human powered vehicle for city ride with a focus on seniors. It deals with the issue of bicycle in city traffic and rates construction modern citybikes with a view to their weaknesses for the purpose. The basis of this work is a design frame with custom geometry, which is fitted commonly available components. Using FEM analysis are revealed critic areas of construction and results are used to optimize the frame.
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Land management for development project
Černý, Petr ; Lukelová, Petra (referee) ; Ivanička, Koloman (advisor)
Topic of this bachelor thesis is preparation of land for a development project. The thesis consists of two parts. The theoretical part gives on overview of processes necessary for initiation, preparation and implementation of the development project. Namely these are the idea of construction, issues related to spatial planning, different phases of the development project, funding of the development project, ensuring the legal ownership of the land and setting the utilities. The practical part describes the difference between two development projects of land preparation for construction of houses, one initiated and managed by a local authority and the second of uncontrolled construction on property of a real estate owner.
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Development of highly resistant composite using secondary raw materials and cast basalt
Černý, Pavel ; Jakubík, Aleš (referee) ; Drochytka, Rostislav (advisor)
The diploma thesis deals with development of high resistant composite, which brings its properties closer to the melted basalt products. This fact will allow substitution of basalt elements in hostile chemical environment by newly developed material and completes its product line. High resistant composite also consists of secondary raw material in highest possible amount. Material that is being evolved carries high strength, abrasion resistance and is also resistable in hostile chemical environment.
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Soil gel as a suitable matrix for the study of humic substances in the soil ecosystem
Černý, Pavol ; Pekař, Miloslav (referee) ; Enev, Vojtěch (advisor)
This master's thesis deals with a complex issue of soil gels. The main goal of this work is to optimize the process of isolation of soil gels out of the soil matrix. Isolation is carried out using only water and therefore represents a promising method for study of humic substances (HS) in natural form. Modal brown earth from the area of Veverské Kninice was used as a soil matrix for isolation. The isolated soil gel was phisicochemically characterized by thermal and spectroscopic methods. By using EA and TGA, the content of biogenic elements in the organic component of soil gel and the content of the inorganic component was determined. The inorganic component represents a majority share in structure of soil gel with values up to 90 % w/w. Mineralogical composition of the inorganic component was described using XRD, with quartz being the most represented. Chosen macro and microelements were determined by ICPOES and the results show a noticeable increase in the content of some elements, that form complexes with HS. Organic component was studied using spectroscopic methods FTIR and XPS, which clearly showed that the primary components of the organic matrix are HSs. For this reason, absorption coefficients EET/EBZ, E2/E3 a E2/E4 were determined using UV/Vis spectrometry. Morphology of isolated soil gels was studied by using SEM and the photographs show mineral particles covered with clusters of humic matrix.
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Video Retrieval
Černý, Petr ; Mlích, Jozef (referee) ; Chmelař, Petr (advisor)
This thesis summarizes the information retrieval theory, the relational model basic and focuses on the data indexing in relational database systems. The thesis focuses on multimedia data searching. It includes description of automatic multimedia data content extraction and multimedia data indexing. Practical part discusses design and solution implementation for improving query effectivity for multidimensional vector similarity which describes multimedia data. Thesis final part discusses experiments with this solution.
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Frequency doubling active antenna
Tomíček, Martin ; Černý, Petr (referee) ; Raida, Zbyněk (advisor)
This thesis deals with the analysis of a planar antenna operating at two frequencies with use frequency doubling. The design and simulation of the antenna in ANSOFT Designer is described. The antenna is designed for two operating frequencies 900 MHz and 1.8 GHz. The antenna is required to operate TM10 mode and TM01 modes.
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Prednasky.com - system for automatic lecture processing
Černý, Pavel ; Beran, Vítězslav (referee) ; Szőke, Igor (advisor)
The objective of this thesis is to create system for automated processing of the video lectures. There are two main parts in this thesis. Bash Framework, which is created from several separated atomic tasks. At the beginning we have a simple video prepared for processing. When it is processed, there are added intro part, subtitles and synchronized presentation. Second part of this thesis is a web application. It is designated for playing, editing and creating videos. Further it provides process management of created framework and whole system administration.
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