|
|
The Effect of the Time of Bird Droppings Remaining on the Vehicle Body on the Damage Degree of the Paintwork
Bílek, Tomáš ; Kaluža, Zdeněk (referee) ; Bradáč, Albert (advisor)
This diploma thesis deals with the issue of the degree of damage done to the vehicle‘s body paint varnish by bird droppings; with respect to the influence of the pollution time on the thickness of the layer of lacquer. The first chapter deals with the importance of varnish and other layers of body protection, types of body varnish damage, painting technology, lacquer defects, bird droppings and its effects on the varnish of the vehicle‘s body. The second chapter is dedicated exclusively to the description, planning and measurement of the coated layers on the vehicle’s body contaminated with bird feces.
|
|
|
Study of the crystallization process kinetics of perovskites and their precursors
Sršeň, Bohdan ; Gavranović, Stevan (referee) ; Zmeškal, Oldřich (advisor)
This thesis focuses on the properties of perovskite materials and examines the methods for preparing layers and potentially monocrystals of these materials. Emphasis is placed on analyzing the electrical and optical properties of perovskites. The experimental part of the thesis is dedicated to the preparation of perovskite material layers and subsequent measurement of their electrical properties during the crystallization process and after its completion. The prepared samples exhibit a macroscopic size due to the interdigitated electrode structure, ensuring a large active surface area. Special attention is given to the influence of nano-particles on the crystallization process and the resulting current-voltage (I-V) characteristics of the prepared samples. Understanding how the presence of nano-particles affects the crystallization and electrical properties of perovskite layers is crucial. These insights are necessary for further optimization of the preparation processes and enhancing the performance of perovskite materials in their final applications. The thesis provides an overview of the properties of perovskites and their preparation. The experimental results yield important insights into the relationship between nano-particles, crystallization, and electrical characteristics of perovskite layers.
|
|
|
Classical concepts of stratification and their comparison with the situation in contemporary society. Subjective and objective position in the social structure
Rádl, Michael ; Šafr, Jiří (advisor) ; Jirkovská, Blanka (referee)
The central theme of the thesis is the current conceptualization of social classes and the issue of stratification in the Czech Republic in the period after 1989. In the first part I confront key theses of classical stratification concepts and follow their transformations in the history of exploration of the social structure. In the second part, by secondary analysis of quantitative data, I am trying to find the key factors of self- classification into social structures and to determine how this subjective self- classification correlates with objective (sociological) classification. An important part of the research is also the question of to what extent and in what sense people perceive the contemporary Czech society as a social-stratified. In the conclusion, on the basis of the results of analysis, I am trying to suggest which of the classical concepts of stratification best reflects the situation in contemporary Czech society. Key words: subjective and objective position, stratification, class, stratum, status, society, social structure
|
|
|
Design of Lacquer Thickness Meter
Rzyman, Michal ; Sládek, Josef (referee) ; Rubínová, Dana (advisor)
This bachelor thesis deals with the design of a device designed to measure the thickness of the paint. The aim of the thesis is to design a device that is visually attractive and has a well-designed ergonomics. The result of the work is a hand-held device that comes out of the shape of a pen. The grip parts are designed from soft plastic and the buttons are appropriately spaced. The whole device is designed in an elegant shape inspired by the automotive industry. Particular benefits for this area can be, above all, these things. Compact shaping, using the latest technology, namely USB type C, electronic gyroscope or Transreflex LCD display. The overall benefit of the work is a different new look at the traditional design and the whole concept of measuring devices.
|
|
|
Image similarity measuring using deep learning
Štarha, Dominik ; Šeda, Pavel (referee) ; Rajnoha, Martin (advisor)
This master´s thesis deals with the reseach of technologies using deep learning method, being able to use when processing image data. Specific focus of the work is to evaluate the suitability and effectiveness of deep learning when comparing two image input data. The first – theoretical – part consists of the introduction to neural networks and deep learning. Also, it contains a description of available methods, their benefits and principles, used for processing image data. The second - practical - part of the thesis contains a proposal a appropriate model of Siamese networks to solve the problem of comparing two input image data and evaluating their similarity. The output of this work is an evaluation of several possible model configurations and highlighting the best-performing model parameters.
|
|
|
Classical concepts of stratification and their comparison with the situation in contemporary society. Subjective and objective position in the social structure
Rádl, Michael ; Šafr, Jiří (advisor) ; Jirkovská, Blanka (referee)
The central theme of the thesis is the current conceptualization of social classes and the issue of stratification in the Czech Republic in the period after 1989. In the first part I confront key theses of classical stratification concepts and follow their transformations in the history of exploration of the social structure. In the second part, by secondary analysis of quantitative data, I am trying to find the key factors of self- classification into social structures and to determine how this subjective self- classification correlates with objective (sociological) classification. An important part of the research is also the question of to what extent and in what sense people perceive the contemporary Czech society as a social-stratified. In the conclusion, on the basis of the results of analysis, I am trying to suggest which of the classical concepts of stratification best reflects the situation in contemporary Czech society. Key words: subjective and objective position, stratification, class, stratum, status, society, social structure
|
|
|
Visualizations history of changes in cadastral map
Klecanda, Vojtěch ; Čábelka, Miroslav (advisor) ; Souček, Petr (referee)
The goal of this master thesis is to suggest a methodology for a visualization history of changes in cadastral maps. The suggested methodology takes into account a selection of original historical and contemporary data, processing workflow and follow-up visualization using existing open source web technologies. The greatest contribution of this thesis is in the design of the spatio-temporal database, because currently there does not exist workable editor similar to it, which could be used for creating such data. The suggested procedure is based on database updating method of ISKN database utilizing amendment records. However this method is significantly simplified with the use of PostgreSQL/PostGIS geospatial functions. The available literature and other informational sources to the topic are overviewed in the first part of the master thesis. The term "spatio-temporal data" is thoroughly defined and also the ways of integrating temporal features into spatial data, methods of visualization of spatio-temporal data and recent state of their implementations into desktop platforms and web applications are noted. Furthermore historical and current data sources and their usability for the master thesis are described. The full methodology of pre-processing and processing of data and a subsequent visualization using...
|
|
|
The Effect of the Time of Bird Droppings Remaining on the Vehicle Body on the Damage Degree of the Paintwork
Bílek, Tomáš ; Kaluža, Zdeněk (referee) ; Bradáč, Albert (advisor)
This diploma thesis deals with the issue of the degree of damage done to the vehicle‘s body paint varnish by bird droppings; with respect to the influence of the pollution time on the thickness of the layer of lacquer. The first chapter deals with the importance of varnish and other layers of body protection, types of body varnish damage, painting technology, lacquer defects, bird droppings and its effects on the varnish of the vehicle‘s body. The second chapter is dedicated exclusively to the description, planning and measurement of the coated layers on the vehicle’s body contaminated with bird feces.
|
|
|
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.
|
|
|
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.
|
guest ::
