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Vlastnosti metrických prostorů pomocí konvergence
Pokorný, Robin ; Hušek, Miroslav (advisor) ; Simon, Petr (referee)
In this thesis we deal with generalisation of the structure of convergence in metric spaces and characterisation of some properties using sequences. On basic of behaviour of convergent sequences in metric spaces which we alongside with selected properties in metric spaces remind we introduce the general structures. The first of them - sequential spaces - includes the information about the limit of a sequence which we consider to be unique. The second - uniformly sequential spaces - generalises the relation of adjacency of two sequences. We show that continuity of a mapping, topology, compactness, connectedness and separability can be induced from a sequential structure. In addition, we show total boundedness and completeness can be characterised using the term of a Cauchy sequence which we can define in a uniformly sequential structure. Boundedness is shown to be independent on both of those structures.
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Design of a programmable attenuator
Pokorný, Rostislav ; Mašek, Pavel (referee) ; Štůsek, Martin (advisor)
This Master´s thesis focuses on design and implementation of programmable attenuator. The main aim of this thesis is to create an electronical device that provide continuous setting of attenuation value in the range between 0–150 dB. Setting a value from the range can be performed using buttons and set values are shown on display. For this thesis an attenuator with working frequency between 0–6 GHz was chosen and four–layer printed circuit board was designed. As a result the device is fitted with an 8bit microcontroller ATmega328P–PU using five 6bit digital attenuators connected in series with manual and program settings of attenuation from 0–157,5 dB with step of 0,5 dB. Data are shown on a build–in display. The application for remote settings and value reading over integrated USB (Universal Serial Bus) interface, was created in C#. In conclusion of this thesis there is a measurement evaluation of attenuation measurement performed on the device.
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Accumulating energy wood head
Pokorný, Radek ; Hloušek, David (referee) ; Kašpárek, Jaroslav (advisor)
This bachelor thesis deals with the design and custom concept of a cutting head for the removal of small seeding trees located on the loading crane of a forestry machine. The device is designed as an extension of the service machine while the loading crane with the cutting head is part of lumber mining machinery or a forwarder. The work is focused on the design of the selected unit.
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Analysis of the functional model of the Open Archival Information System (OAIS)
Lambertová, Jana ; Dvořák, Tomáš (advisor) ; Pokorný, Radek (referee)
The aim of this work is description Open Archival Information Systém, digital preservation, development, goals and basic concepts of digital preservation such as metadata, migration. The main goal is detailed analysis of the funkcional model OAIS in connection with usability in an archive and digital archiving. The bachelor thesis describe the main parts of the model, OAIS environment, information model and archival information package. The first tasks is analyze individual parts of the model, find out how they works and what is need to work in an archive. The goel is verify the scope of OAIS, its use in an archive and what the implementation demands are. .
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Comparison of drought effect on young coppiced and standard individuals of sessile oak
Stojanović, Marko ; Čater, M. ; Pokorný, Radek
Assimilation and photosynthetic efficiency (quantum yield) of young oaks were compared in coppice and standard sessile oak stands of comparable age (100-120 years) under different light intensity categories. Measurements of assimilation response were performed during three consecutive growing seasons (2012, 2013 and 2014). In every category 8 young oaks of generative origin and same number of coppice sprouts of different stool were measured. The quantum yield in optimal conditions in standards was highest in the category A of closed canopy, while in coppices in category C. During severe drought in 2013 the drop in efficiency of standards was evident in all categories, while in coppices no differences in efficiency were confirmed between optimal and drought stress, proving the advantage of young coppices over standards.
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Mineralogical forms, distribution and importance of freshwater ice
Vrbický, Tomáš ; Mikuláš, Radek (advisor) ; Pokorný, Richard (referee)
Ice is one of the fundamental components of the environment. It covers the land surface and significantly affects our lives both on a local and global level. It is the subject of considerable scientific interest, particularly in terms of its role in climate change - the ice is capable to release pollutants into the water environment or modify the composition of the atmosphere, represents a drinking water supply or "archive" of the natural environment. This thesis "Mineralogical forms, distribution and importance of freshwater ice" describes the most common forms of freshwater ice, its distribution and importance on the Earth surface and beyond. It introduces us to the issue of current direction of ice researching and approaches some open questions. Part of this work presents types of ice occurring in the Czech Republic.
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Evaluation of mass game hunted in selected hunting grounds in the area of Konstantinovy lázně
POKORNÝ, Radek
Free-ranging population of sika deer, roe deer and wild board in micro-region "Konstantinolázeňsko" in Czech Republic, has been determining dressed body weight, whole body weight, weight of head, weight of limb and weight of internal organs (heart, lungs, liver, spleen and kidneys). The correlation between all weights was calculated. During the research was determined mean weight between whole body and dressed body. In this study the dressed mean weight of sika deer was 74,03 % of the whole mean weight. For wild board the mean dressed weight was about 78,56% of the whole weight and for roe deer mean it was about 76,66% of the whole weight. Obtain weight has been statistically analyzing of ages, sexuality, seasonal variation. For both sexuality of wild board was statically proven that body weight is increasing with age. For sika deer calfs was statically proven that body weight was higher if the calf was shoot after 15. 1. then cals was shoot before. For sika deer with out age difference was statically proven that sika males had higher body weight than sika females. Other types of statistics are listed in the document.
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Measuring of Electricity Consumption Utilizing Current Transformer and Arduino Platform
Pokorný, Rostislav ; Pokorný, Jiří (referee) ; Štůsek, Martin (advisor)
The aim of this bachelor thesis is implementation of non-invasive platform for measuring the consumption and production of electrical power. Developed device enables visualization of measured data on display. Electric current is measured by non-invasive current sensor equipped with split core made of ferrite. Measured data are processed on single board microcomputer called Arduino. The device enables wireless communication with a server platform that allows visualization of measured data in a simple graphical user interface based on the ThingSpeak platform. Created device can measure consumption or production of electrical power on appliance with maximum current up to 30 A without need of any changes in electric circuit.
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Vlastnosti metrických prostorů pomocí konvergence
Pokorný, Robin ; Hušek, Miroslav (advisor) ; Simon, Petr (referee)
In this thesis we deal with generalisation of the structure of convergence in metric spaces and characterisation of some properties using sequences. On basic of behaviour of convergent sequences in metric spaces which we alongside with selected properties in metric spaces remind we introduce the general structures. The first of them - sequential spaces - includes the information about the limit of a sequence which we consider to be unique. The second - uniformly sequential spaces - generalises the relation of adjacency of two sequences. We show that continuity of a mapping, topology, compactness, connectedness and separability can be induced from a sequential structure. In addition, we show total boundedness and completeness can be characterised using the term of a Cauchy sequence which we can define in a uniformly sequential structure. Boundedness is shown to be independent on both of those structures.
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