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An induction machine with solid rotor
Fišer, Jan ; Klíma, Jiří (referee) ; Mach, Martin (advisor)
This master’s thesis is focused on induction motor with solid rotor. The introduction is dedicated to the full analysis of the rotor. Then model of motor with solid rotor was designed in 2D and 3D. Simulations of these models were carried out using the finite elements method. Further in this thesis there are laboratory measurements` results due to the motor`s sample. Based on the results from simulations and measurements rotor modifications have been proposed, which led to improved machine parameters. 2D models have been developed by rotor modifications. These models went through finite elements method`s simulation. In the conclusion of the thesis there are all results from measurements and simulations compared.
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The conductive layers in LTCC
Poledník, Tomáš ; Psota, Boleslav (referee) ; Kosina, Petr (advisor)
The bachelor thesis was focused on a determination of the limits of screen printing and on estabilishing a power loading of layers on LTCC. It describes the print of the conductive themes via the screen-printing method on the substrata. The thesis contains the description of a measuring on the conductive layers, and a processing its results. It was also performed the printing of layers on a corundum ceramics in order to compare the results. From the measured values were formed the graphs, which represent the possibility of the power loading of layers depending on the temperature and on the width of the thick-layer guide.
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Properties of metal layers realized with vapour deposition
Milichovský, Miloš ; Švecová, Olga (referee) ; Šandera, Josef (advisor)
This work deals with vacuum evaporation of metals, basic principles of this technology and exploring the properties of the resulting layer. It describes how vacuum evaporation works and its individual parts.The main part deals with evaporation of copper and other substances and the conductivity of the resulting film in relation to its thickness. As a parameter for measuring substrate temperature is specified.
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Study of luminicsence properties of organic semicondustors
Koňák, Petr ; Horák, Michal (referee) ; Boušek, Jaroslav (advisor)
This document describes using organic semiconductors to the electroluminescence on thin layers. In introduction of this file there is analysis a the problem of organic semiconductors and it's using in today's world. Next, I want to describe work with the given samples, their chemical composition and also include results from the measuration of electroluminescence.
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QoS in UMTS
Kavan, Radovan ; Hanus, Stanislav (referee) ; Kejík, Petr (advisor)
This thesis treats of QoS (Quality of Service) in UMTS system. The term quality of service is frequently used, recently, however not only in computer networks, but also more and more in mobile networks also. Present system of 2nd generation (2G) GSM enables only limited exploitation of QoS function. System UMTS is a system of 3rd generation (3G) already and contains quality of service in greater measure which is ensured with number of algorithms and functions. Individual QoS functions enable effective utilization of radio interface, support maintenance of planned coverage and offer high spectral efficiency. Functions that cater to quality of service are called RRM functions (Radio Resource Management). There exist five basic functions in UMTS system that are Admission control (AC), Power control (PC), Load control (LC), Handover control (HC) and Packet scheduler (PS). These functions are responsible for control of network access, control of power, control of network load, control of handover and packet (bit rate) scheduling. Last three functions are usually collectively designated as Congestion control, control of network overload. UMTS layer model, differentiation of services, traffic classes and 3GPP concept are also discussed. In thesis the attention is piad to Admission control algorithm – control of network access – in the uplink direction and to different ways of load (in the cell) modeling. Individual approaches are simulated in MATLAB. A possibility of using algorithm in the real system is discussed in conclusion.
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Reflex Treatment of Transparent Materials
Meluzín, Ondřej ; Tulka, Jaromír (referee) ; Molliková, Eva (advisor)
This thesis deals with the possibilities and methods of coating of transparent materials in order to improve their optical-reflective properties. It describes various methods that nowadays coatings can be applied on an industrial scale, while maintaining a constant thickness and properties across the applied coating. Further provides specific examples of how the application of different optical coatings can improve the desired properties of materials used for technical applications.
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Computer control of the deposition process
Pavera, Michal ; Voborný, Stanislav (referee) ; Urbánek, Michal (advisor)
This bachaloers thesis deals with automation of the deposition process of the ultrathin layers by IBAD method. One of the tasks is to design motorized target and shutter manipulator. The thesis therefore contain drawings of these manipulators. Which enable their control by stepper motors. Second task is to design of electronics and program control of primary and secondary ion source. In this part is described connection of the system with the computer using AD/DA converters and the appropriate programming. Last part of the thesis deals with differences between automated and manual control of the system, their advantages and disadvantages.
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The Social Stratification of particular Collectivity
Štádlerová, Jana ; Novotná, Eliška (advisor) ; Syrovátka, Oldřich (referee)
This bachelor's thesis is concerned with the social structure of population in Chodová Planá. The goal of this thesis is the analysis of social stratification in the village using application of stratification criteria of Warner's stratification model. The bachelor's thesis is divided into two main sections. Basic terms of the stratification theory, pre-stratification-theory, current stratification models and the criteria for their building, measuring and criticism of stratification are explained in the theoretical one. The analytical part deals with the analysis of social stratification in chosen village. At the beginning of this part attention is paid to the basic characteristic of chosen village, used methods and the process of collecting and processing data. The most important part is the analysis of data and creating the stratification models for Chodová Planá according to individual stratification criteria. The stratification of the society is compared with preliminary dates from Counting of people, houses and flats 2011 (Sčítání lidu, domů a bytů 2011).
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The Social Stratification of a Municipality
Petrásek, Lukáš ; Novotná, Eliška (advisor) ; Rameš, Václav (referee)
This work deals with social stratification in the selected village, in this case in the town Lomnice nad Lužnicí. The main aim is to show the social structure of the population in that area and apply it to one of the current stratification models. The theoretical part is an introduction to the problems of social stratification, explanations and definitions of basic concepts related to the topic, an introduction to demographic data of the town Lomnice nad Lužnicí and methods used for measuring social stratification. The practical part will be done processing, analysis and evaluation of data that will lead to a creation of stratification models.
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