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Levitation electromagnet
Kadlec, Michal ; Huták, Petr (referee) ; Patočka, Miroslav (advisor)
This bachelors work deals with magnetic levitation and design of the electromagnet. The design of the electromagnet is a demand for a minimum amount of constructionand is performed in two ways. It also made a proposal of a mathematical model of the magnet control circuit and control simulation. The knowledge gained can be used tothe design of the electromagnet in engineering practice.
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Optimization of production of thin films of metallic materials
Čejka, Marek ; Kadlec, Michal (referee) ; Šubarda, Jiří (advisor)
The present thesis deals with optimization of the formation of thin layers of metallic materials. In the theoretical part was elaborated overview of the implementation of the formation of thin- film structures, particularly using vacuum techniques. Chemical and physical vapor deposition. They were described methods of pretreatment of thin layers. The findings were discussed methods of controlling the pre-treated surface, quality control and mutual adhesion of coating layers. In the experimental part of the pre-treatment methods were selected and applied to selected substrates. Pretreatments were evaluated using a control surface by wetting angles and by atomic force microscopy. Then, the metal structure formed of copper on the pretreated substrates. Implementation by means of magnetron sputtering. Adhesion layers was checked by testing the surface lattice method. The quality was observed by scanning electron microscopy. The results were used to design the technological process of making metal layers.
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Influence of magnetic field on photovoltaic solar cell
Kadlec, Michal ; Šubarda, Jiří (referee) ; Šimonová, Lucie (advisor)
This thesis describes the issue of PN junction of photovoltaic cells, photovoltaic effect physics, basic materials used in photovoltaic and their properties, important for the area of photovoltaic. It deals with the problems of magnetism focused on electromagnetic fields. Experimental facility for measuring the influence of magnetic field on the solar cells through the Helmholtz coils was constructed. This work also dealing with the influence of magnetic radiation on photovoltaic cells and the influence of electromagnetic waves on the volt-ampere characteristics of the photovoltaic cell.
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Laboratory kit for demonstration of active low pass, high pass and band pass filter by Sallen-Key structure
Kadlec, Michal ; Smejkal, Vladimír (referee) ; Slezák, Josef (advisor)
The main aim of this work is to design electric circuit for realizing of low pass, high pass and band pass filter using Sallen – Key structure. It is active filter so this work pays attention to choose the suitable active element. I will analyze individual types of frequency filters, simulate designed structure and will choose suitable computing amplifier for our structure. I will simulate every circuit with ideal operational amplifier, with operational amplifier having real parameters and finally with our chosen operational amplifier. I will confront the difference of individual circuit, influence of real parameters of amplifier for the general process of resultant filter modul characteristics. I closer take a look at the output resistance influence of operational amplifier for the modul characteristics of choosen circuit (low pass filter). This project also includes the summary and analyses of individual possibilities of the electronic control applied to active filter parameters. The part of the project is also detailed analyze and process of realization of the final connection of laboratory instrument.
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Behaviour of varnish composite in various environmental condtions
Kadlec, Michal ; Frk, Martin (referee) ; Rozsívalová, Zdenka (advisor)
The diploma thesis is focused on the preparation of test samples of paint-filled micronized mica and analysis of electrical properties of insulating material values in different environmental conditions. For this purpose, it was created five sets of composite paint primers with different ratio of mica. Samples were gradually exposed to the environment relative humidity of 0%, 33%, 55%, 65% and 75%. For each environment with a defined moisture characteristics were observed in samples exposed to the temperature of 20 to 50 ° C. The diploma paper analyzed the influence of the mass implementation of mica in each set of samples and placed on the surface structure of samples.
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Zpracování plánu pěče pro lokalitu Mrzenáč v Novohradských horách
KADLEC, Michal
Main aim of this work is to create plan of care for Mrzenáč locality in Novohradské Hory Mts according to the methodology approved on the 29th September 2004 under No.M/100856/04. First part provides introduction into basic facts and history of Mrzenáč locality. Main body of this work is divided into two major parts. First part includes complete geophysical characteristic of chosen locality based on available materials. This section consist of chapters which describes geology, climatology, geomorphology, hydrology, pedology and biogeography. Human influence, such as logging, hunting and touristic activities are described in this part. Also contains influence of natural disasters of recent years such as 2002 floods and Kyrill storm in 2007. Second section is mostly aimed at plan of care itself. After studying materials and field survey it was decided to create plan of care. Plan was created under the bill No. 60/2008 which covers labeling, evidence and declaration of protected areas and national parks. Data obtained during interview with workers of Nové Hrady forest administration office were largely used when composing plan of care. Photographic documentation was created by author himself during field survey and is included in this work. All the map attachments in this work were created using geographical software GIS. Maps were mainly created using ZABAGED data provided by ČÚZK.
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Methods of spreading copyrighted content over the Internet
KADLEC, Michal
The thesis analyzes the current situation and issues of spreading copyrighted content using the global Internet network, summarizes and describes the basic programs and tools used for spreading of copyrighted content over the Internet. This work also deals with the analysis of the legal system framework of Czech Republic and its efficiency. In conclusion, the work provides basic information on institutions supervising compliance other subjects with copyright and explains some of their preventive and repressive decisions.
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Impact of culture elements on the marketing. Specifics of New Zealand culture.
Kadlec, Michal ; Koudelka, Jan (advisor) ; Zamazalová, Marcela (referee)
This Diploma paper deals with topic of cultural impact on the Marketing. Connections and significance of cultural elements are explored in marketing perspective. The methodical section of this paper is focused on the Culture of New Zealand, when its specific traits are described and main cultural elements related to the marketing are analyzed. In the first part of the paper it discusses the culture in general terms as well-dynamic process and takes up with the main elements of culture. Extraordinary attention is paid to the specific symbolic perception of colours in various cultures as the most important visual factor, which is also connected with the marketing. Theoretical section of this paper is closed up by analysis of the Model cultural dimensions, which was invented by Dutch anthropologist Geert Hofstede. This model provides measurable data about main cultural traits and differences in certain cultures over the World. The Analysis of Hofstede`s model also includes relation to the various religions. The second part of the paper deals with the process of significant culture elements application on the marketing field. Primarily attention goes to the marketing mix and its tools -- product, price, place and promotion. This section defines and explains main aspects and perspectives of multicultural marketing, which are necessary to respect. The final methodical part of this paper focuses on the Culture of New Zealand and its fundamental elements related to the marketing as well. It provides overview of the main culture traits, which are essential to be adapted to launch New Zealand market successfully. Research of the visual symbol perception in Czech and New Zealand culture completes this topic. This was done through questionnaire using cultural based print advertisements. In conclusion it presents summary of the main goals found in this diploma paper.
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