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Project of bonnet hinges assembly shop
Chadim, Jakub ; Horák, Jaroslav (referee) ; Rumíšek, Pavel (advisor)
This thesis deals with the technological project of rear bonnet hinges assembly shop, specifically with desing the layout the of assembly shop in the Edscha Automotive Kamenice s.r.o. company. The thesis shows the basic theory to understanding the problems of assembly workshops. The thesis analyses the present state of the assembly workshop and with reference to the requirements of the company and fundamentals technological projection features three possible solutions. The selected solution becomes the shape of rationalization project. In the end is the variant technical-economic reviewed.
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Technology project for general production of the "PC-box cover"
Křivý, Drahoš ; Horák, Jaroslav (referee) ; Rumíšek, Pavel (advisor)
The project, which was done within the scope of engineering’s study shows the proposal of new technology and production organization of a part “PC cover” – a piece done by deep drawing technology from steel sheet of material 11 321. The study shows some of production operations such as cutting, bending, drawing and shearing, included production method solving. In the project were solved also necessary technological calculations and constructional drafts of forming tool. The whole work covers a complex solution of problems related to production of PC cover together with technological disposition of workplace which represents effective layout, distribution and designing of workplace and machines, used for production of the part in a workshop
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Heating the building for youth and free time
Horák, Jiří ; Počinková, Marcela (referee) ; Horák, Petr (advisor)
The content of this thesis is the treatment of heating of a multipurpose building for youth and leisure time in Letovice, Blansko district. The building has three floors with a total built-up area of 1003 m2. Thesis solves a design of the heating system of the first floor including solution to the boiler room for heating the whole building. The boiler room is located on the ground floor. Pellet boilers are designed for heating purpose. Solar system is designed for preheating drinking water. Room ventilation in building is designed as a natural.
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Slot antenna for X band
Buriánek, František ; Horák, Jiří (referee) ; Láčík, Jaroslav (advisor)
This work familiarizes readers with the issues of slot antennas. It presents design and simulation of slot antenna for X band in CST Microwave Studio program. The simulation procedure is described here, including all the settings required for proper operation of the simulation. Then there is the description of the principle of the Half-Mode Substrate Integrated Waveguide - HMSIW. In the end the designed structure of HMSIW and the slot antenna are assembled and measured. The results of the simulation are compared with the results acquired by measurements. The designed antenna at the frequency 10 GHz achieves the impedance bandwidth 255 MHz, and the gain 8,81 dBi (the simulated values in CST Microwave studio).
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Jawa 50 performance improvement
Horák, Jiří ; Prokop, Aleš (referee) ; Janoušek, Michal (advisor)
The bachelor thesis is focused on increasing the performance of Jawa Babetta type 225 moped engine. The first part of the bachelor thesis describes the principle of a two - stroke combustion engine and the possibility of its distribution. The next part is dedicated to the modification, which was done experimentally according to information from available literature. The thesis contains a comparison of the results of the serial and modified engine measurements.
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Barier films based on polyparaxylylene and their properties
Horák, Jakub ; Mazánková, Věra (referee) ; Přikryl, Radek (advisor)
This diploma thesis is focused on preparation and characterization of parylene C barrier properties. The layers were prepared by chemical vapour deposition (CVD). The interest in characterization of those layers is huge mainly because of their possible use in museology for the protection of the museum archives against the corrosion. Chlorinated dimer of para-xylylene was used as a precursor. Polypropylene foils, metal sheets and silica wafers were used as tested substrates for thin film preparation. Polypropylene foils were used for oxygen transmission rate measurements, metal sheets were used for corrosion tests and silica wafers were used for Fourier transform infrared spectroscopy (FTIR), confocal laser scanning microscopy (CLSM), scanning electron microscopy (SEM) and stylus profilometry.
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Graphical Editor of Simulation Models
Hořák, Jan ; Hrubý, Martin (referee) ; Peringer, Petr (advisor)
This paper contains brief introduction into modeling and simulation using Discrete Event Specified System (DEVS) formalism. It defines basic models (atomic and coupled DEVS) and shows how they are simulated. Examples of derived DEVS formalism like parallel DEVS or DESS are also presented. It is described how to create DEVS models using graphic modeling software and advantages and disadvantages of this approach. A short summary of known programs are also covered. Storing models in the XML language, validation of XML document and transformation capabilities by XSLT are discussed. The main section is dedicated to the design of a graphic editor for simulation models inspired by design patterns including classes for canvas, model representation, export module interface and main application. The XML document used for storing DEVS models and simple DEVS simulator are also described. Implementation section presents used programming libraries, reasons why they have been used and their advantages and disadvantages. Paper ends with an example of a simple DEVS model created by implemented graphic editor for simulation DEVS models.
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Semi-Automatic Image Segmentation
Horák, Jan ; Beran, Vítězslav (referee) ; Španěl, Michal (advisor)
This work describes design and implementation of a tool for creating photomontages. The tool is based on methods of semi-automatic image segmentation. Work outlines problems of segmentation of image data and benefits of interaction with the user. It analyzes different approaches to interactive image segmentation, explains their principles and shows their positive and negative aspects. It also presents advantages and disadvantages of currently used photo-editing applications. Proposes application for creating photomontages which consists of two steps: Extraction of an object from picture and insertion of it into another picture. The first step uses the method of semi-automatic segmentation GrabCut based on the graph theory. The work also includes comparison between application and other applications in which it is possible to create a photomontage, and application tests done by users.
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