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1
Rumánek, Tomáš. "Redukce NOx ve spalinách." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2010. http://www.nusl.cz/ntk/nusl-229280.
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My master´s thesis deals with the problems of NOx abatement that are included in flue gas. The accent is put on flue gases treatment throug cloth filter or ceramic candles, where the deposited catalyst enables NOx reduction throug the method of selective cytalytic reduction. In thesis is also describe experimental unit which current remove gaseous pollutants (dioxin, VOC and NOX) and ash on catalytic cloth filter or catalytic ceramic candles. For experimental unit has been calculated pressure drop. Pressure drop has been calculated for nominal and maximal conditions for cloth filter and ceramic candle. Last part of thesis deals with compile a experimental schemes for different concentration of NO, flow and temperature of combustion.
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Procházka, Lukáš. "Redukce nedeterministických konečných automatů." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2011. http://www.nusl.cz/ntk/nusl-237032.
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Nondeterministic finite automaton is an important tool, which is used to process strings in many different areas of programming. It is important to try to reduce its size for increasing programs' effectiveness. However, this problem is computationally hard, so we need to search for new techniques. Basics of finite automata are described in this work. Some methods for their reduction are then introduced. Usable reduction algorithms are described in greater detail. Then they are implemented and tested. The test results are finally evaluated.
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Brabec, Vít. "Parní turbina jako točivá redukce." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-229826.
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The dissertation analyses a possibility to install a steam turbine for steam reduction in the heating plant with a combined cycle, Červený Mlýn. In the first part of this work the constituent parts of Červený Mlýn plant are briefly described. Basic information is included about two considered solutions to the steam turbine for steam reduction. Then the thermic diagram of the whole heating plant and the heat exchanger station itself is presented. On the basis of the given values of the heat required in the hydrothermal system, duration of the steam flow through both variants of the steam turbine for steam reduction is determined. The thermodynamic calculation of the steam turbine for steam reduction is aimed at determination of the power output and its comparison with the power outputs of the steam turbines for steam reduction considered. In the economical profitability calculation, basic economical quantities are given for both the solutions and the more suitable solution is recommended.
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Janík, Prokop. "Redukce NOx obsažených ve spalinách." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2012. http://www.nusl.cz/ntk/nusl-230288.
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Research in the field of NOX abatement has grown significantly in the past two decades. The general trend has been to develop new catalysts with complex materials in order to meet the stringent environmental regulations. The master’s thesis deals with the cleaning flue gases through a filter element which is from porous ceramics. There is catalyst implemented for NOx reduction throug the method of selective catalytic reduction in the filter element. There is also description of experimental unit for flue gas cleaning. Part of the thesis is creation of prediction model which allows to predict efficiency reduction in the filtration device operating conditions with some accuracy.
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Kujawa, Adam. "Plazmochemická redukce korozních vrstev na měděných předmětech." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2013. http://www.nusl.cz/ntk/nusl-216908.
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The object of study in present diploma thesis is the plasmachemical reduction of corrosion layers on copper. This process is based on reductive properties of low pressure hydrogen plasma. In this case three series of copper samples were prepared and corroded in different corrosion environments in order to create three kinds of artificial corrosion layers. In the first step the copper coupons were properly grinded in order to achieve a defined surface roughness. In the next step the coupons corroded for 12 days in vapours of three concentrated acids – HCl, HNO3, and H2SO4. SEM/EDX analysis was carried out in order to characterise the grown corrosion layers on copper coupons, which showed us the presence of nitrogen, oxygen, chlorine and sulphur in different chemical forms in corrosion layers. The most significant part of this work was the plasmachemical treatment of corroded copper samples. Pure hydrogen was used as a reaction gas under the pressure of about 200 Pa and 50scc/m flow rate. The discharge was generated in quartz-glass reactor by using RF generator under the different power and mode settings. Optical emission spectroscopy was used to detect the intensity of plasma radiation. The value of integral intensity of OH radicals represented quantitative ablation of oxygen from a corrosion layer. OH radicals were the main products of reaction between hydrogen radicals (from plasma) and oxygen in corrosion layer. Time of increasing of OH radicals intensity was different for coupons from different corrosion environment and was also related to used power of generator and mode. The process was finished when the OH radicals intensity decreased to 10% of reached maximum. Sample temperature was an important indicator of sample protection against metallographic changes. The analyses XRD and SEM/EDX on corroded and treatment samples were performed. The analyses show that the decrease of main corrosion agents as chlorine and oxygen was achieved by hydrogen plasma treatment. The corrosions as well as their removal are a very complex problem and the plasmachemical treatment of metal objects is an efficient method for the removal of corrosion layers as compared to conventional conservations methods mainly due to a significant reduction of treatment time.
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Talár, Ondřej. "Redukce šumu audionahrávek pomocí hlubokých neuronových sítí." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2017. http://www.nusl.cz/ntk/nusl-317118.
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The thesis focuses on the use of deep recurrent neural network, architecture Long Short-Term Memory for robust denoising of audio signal. LSTM is currently very attractive due to its characteristics to remember previous weights, or edit them not only according to the used algorithms, but also by examining changes in neighboring cells. The work describes the selection of the initial dataset and used noise along with the creation of optimal test data. For creation of the training network is selected KERAS framework for Python and are explored and discussed possible candidates for viable solutions.
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Volařík, Tomáš. "Redukce atmosferickych vlivu z observace supravodivych gravimetru." Doctoral thesis, Vysoké učení technické v Brně. Fakulta stavební, 2017. http://www.nusl.cz/ntk/nusl-355644.
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This dissertation is focused on a study of selected environmental effects influencing terrestrial gravity observations. Global geopotential models were used to compute quantities of the disturbing gravity field and its variations during time period. Furthermore, analyses of an atmospherical and hydrological effects on the gravity observations were provided. The computation was realized at the station Pecný, however the concept was proved and compared with data from station Strasbourg. Consequently, the results were discussed with respect to quasigeoid modelling established from gravity and astrogeodetic measurements. The result and recommendations for future research are exposed.
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Šimšová, Tereza. "Studium plazmochemické redukce korozních vrstev na mědi." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2008. http://www.nusl.cz/ntk/nusl-216405.
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The present diploma thesis concerns the research of plasmachemical reduction of copper corrosion layers. The process was based on using low pressure hydrogen RF plasma in which copper samples are treated for several hours. Four series of copper corrosion layers were prepared in four different corrosion atmospheres. The first two were prepared using saturated vapors of HCl and ammonium acetate that affected copper samples for one week. The second two sets were prepared by samples dipping in HNO3 and H2SO4. EDX analysis confirms visual composition of corrosion layers – chlorides, nitrides and sulphate, respectively. The ammonium acetate produced no corrosion layers and thus this set of samples was omitted. The optical emission spectroscopy was used to find out reactions in a hydrogen RF discharge. At the first, a character of plasma without samples was taken by measuring in continuous and pulsed regime. The integral spectrum intensity (300-700 nm) and intensities of hydrogen atomic lines were observed in the dependences on hydrogen flow, power and duty cycle. After that copper samples were treaded under various conditions in continual and pulse regime, typically at pressure of 170 Pa, 200 W power and hydrogen flow rate of 10.2 ml/min. The integral OH radical spectral intensity in the range of 305 – 330 nm was used as a monitor of plasma treatment process. The experimental results showed that intensities of OH radical depended strongly on the corrosion layer kind as well as on the RF discharge mode. Reduction of corrosion layers treated in the pulsed regime was not so satisfactory then in the continuous regime probably due to lower temperature of sample during the treatment. The total supplied energy into the system was also lower in this case. The sample sputtering was observed during the reduction in continuous regime. It means the corrosion was successfully removed but the process was not stopped at that moment, so it is necessary to propose another additional monitoring process besides observing OH radicals. Our experimental results are the first step in the spread research of plasmachemical treatment of copper made archaeological artifacts.
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Zemánek, Nikola. "Studium plazmochemické redukce korozních vrstev na bronzi." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2008. http://www.nusl.cz/ntk/nusl-216410.
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The application of low-pressure low-temperature hydrogen plasma on artificial corrosion layers on bronze has been studied. For this purpose, three sets of bronze corroded samples were prepared. The first step of the model sample preparation was grinding of the bronze surface by using emery with 60, then 280 and finally by 600 grains density, in order to achieve the defined surface roughness. The next step of the work were optical and scanning electron microscopy observations with energy dispersive X-ray micro analysis (SEM-EDX) of the prepared bronze sample for purpose of surface structure characterization and element composition determination. Bronze samples with defined surface structure were corroded in different corrosion atmospheres. Three different model corrosion layers were formed by acidic atmospheres of hydrochloric acid, nitric acid and sulphuric acid. The element composition and structure of corrosion layer was determined by SEM-EDX again. The different amounts of oxygen, nitrogen, chlorine, sulfur, copper, tin and lead in the corrosion layer according to different types of corrosion atmospheres were determined. The next and also main part of the work was a plasma chemical reduction of corroded samples. The plasma reactor used the RF discharge (13.56 MHz) created in quartz tube with outer electrodes. The generation of capacitively coupled plasma in continuous or pulse mode by different supplied power was carried out. The plasma radiation emitted from the RF discharge during the sample treatment was measured by optical emission spectroscopy. The quantity of OH radical created in an active discharge by reactions of atomic hydrogen with the corrosion layer is a significant indicator of a reduction process. Therefore the OH radical band integral intensities observed as a function of the treatment time were used as a monitor for plasma chemical reduction process. The OH emission showed different behavior depending on corrosion layer composition during the plasma treatment. The transformations of the corrosion layer due to the plasma effect were investigated by means of SEM-EDX once again. Changes in the element composition of corrosion (or surface) layers in consequence of plasma chemical treatment are given. Generally, the element composition after the plasma chemical treatment showed explicitly that oxygen and chlorine content in the corrosion layer decreased, nitrogen was removed totally. Metal deposition on the reactor wall was observed occasionally. The SEM-EDX analyzes also showed that in some cases the tin content in sample surface layers was significantly decreased. For that reason, in case of bronze sample (artifacts) treatment, the sample and plasma temperature seem to be very important parameters for the process optimization. The acceptable conditions for plasma chemical treatment has been found in case of corrosion layer formed by nitric acid, only. The other corrosions will be a subject of further studies.
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Ditrich, Josef. "Možnosti redukce výběrového zkreslení v ratingových modelech." Doctoral thesis, Vysoká škola ekonomická v Praze, 2009. http://www.nusl.cz/ntk/nusl-201116.
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Nowadays, the use of credit scoring models in the financial sector is a common practice. Credit scoring plays an important role in profitability and transparency of lending business. Given the high credit volumes, even a small improvement of discriminatory and predictive power of a credit scoring model may provide a substantial additional profit. Scoring models are applied on the through-the-door population, however, for creating them or adjusting already existing credit rules, it is usual to use only the data corresponding to accepted applicants for which payment discipline can be observed. This discrepancy can lead to reject bias (or selection bias in general). Methods trying to eliminate or reduce this phenomenon are known by the term reject inference. In general, these methods try to assess the behavior of rejected applicants or to obtain an additional information about them. In the dissertation thesis, I dealt with the enlargement method which is based on a random acceptance of applicants that would have been rejected. This method is not only time consuming but also expensive. Therefore I looked for the ways how to reduce the cost of acquiring additional information about rejected applicants. As a result, I have proposed a modification which I called the enlargement method with sorting variable. It was validated on real bank database with two possible sorting variables and the results were compared with the original version of the method. It was shown that both tested approaches can reduce its cost while retaining the accuracy of the scoring models.
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Szásziová, Lenka. "Návrh algoritmu redukce síly na řídící ploše letadla." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-229703.
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Digitální Fly-by-Wire systém je novým přístupem k řídícímu systému letadla, na jehož základě firma Honeywell - HTS CZ začala výzkumný projekt s názvem “Next Generation Distributed Fly-by-Wire System” a tato práce je jeho součástí. Řídící plochy letadla jsou řízeny dvěma nebo třemi elektrohydraulickými (či elektrickými) servy a každé servo je ovládáno nezávislou řídící jednotkou. Díky provozním tolerancím systému a drobným odchylkám vstupních dat v řídících jednotkách, dostává každé servo mírně odlišné povely a rozdíl v poloze serv vede k namáhání řídící plochy i k namáhání serv. Hlavním cílem této práce je navrhnout algoritmus, který bude eliminovat rozdíly mezi polohami jednotlivých serv, a tudíž sníží sílu, která namáhá řídící plochu, na přípustnou mez. Implementace řídícího systému letadla byla do detailu analyzována a algoritmus redukce síly na kontrolní ploše letadla byl navržen a implementován v prostředí Simulink. Iterační kriteriální ladící metoda byla vyvinuta a za účelem co nejlepšího nastavení algoritmu redukce síly. Práce také analyzuje vliv časových zpoždení na sběrnici na kvalitu algoritmu redukce síly.
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Řádková, Lucie. "Redukce korozních vrstev na mosazi pomocí vodíkového plazmatu." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2011. http://www.nusl.cz/ntk/nusl-216684.
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The main topic of this Diploma thesis is the application of low-pressure low-temperature hydrogen plasma for the treatment model samples of rusted brass. Plasmachemical treatment of metallic artifacts is a relatively new way how to remove corrosion of artifacts. The temperature of an object should not exceed 150 °C during the treatment. Corrosion layers were prepared in an ammoniac corrosion atmosphere. The corrosion formation took two weeks. Energy Dispersive X-ray Microanalysis has shown that the corrosion layer was formed by carbon, oxygen, copper, zinc, and lead. The corrosion layers were blue-colored with white crystals on the surface. Except those two colors, brown color was observed on corrosion layers, too. The plasma reactor was a quartz tube with outer copper electrodes and supplied by the RF source of 13.54 MHz. The reactive atomic hydrogen was formed in plasma discharge. This atomic hydrogen reacted with the corrosive layer containing oxygen. This reaction created an unstable OH radical, which emitted light in the region of 305–320 nm. This radiation was detected by the optical emission spectroscopy and it was applied as process monitoring quantity. Rotational temperature and intensity of OH radicals were determined from obtained data. The sample temperature was measured by thermocouple installed inside the sample volume. Rusted samples were treated by low-pressure low-temperature hydrogen plasma. 16 samples were treated at different conditions – plasma power was 100 W, 200 W, 300 W, and 400 W at continuous mode and pulse mode with duty cycle of 25 %, 50 %, and 75 %. The pressure was between 140–160 Pa at hydrogen flow rate of 50 sccm. Samples after plasmachemical treatment were grey colored with white crystals on their surface. Corrosion layers were removed by spatula. The corrosion layers of some samples were easy removable, some others were difficult. Energy Dispersive X-ray Microanalysis, which was carried out after the treatment of 2 selected samples (400 W, 50% pulse mode and 400 W, 75% pulse mode), showed different amounts of carbon, oxygen, copper, zinc, and lead compared to the rusted sample. Other elements in the treated layer were silicon, sulfur, chlorine, and fluorine.
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Miková, Petra. "Redukce korozních vrstev na bronzu pomocí vodíkového plazmatu." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2011. http://www.nusl.cz/ntk/nusl-216686.
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This diploma thesis is focused to the plasma chemical reduction of model corrosion layers prepared on bronze samples. Bronze was the main material for production of the subjects in Bronze Age. First, it was very rare, and therefore was used only for making jewellery and other decorative subjects. Later, the objects of daily use and weapons were produced of bronze. These objects are found and it is necessary to restore him and preserve the cultural heritage for future generations. The research and the optimalization of plasmochemical reduction of model corrosion layers on bronze samples contributes to this. A metallographic grinder was used to create a defined surface, first with the sandpaper P 280 and then after sample 90 degree rotation with the sandpaper P 600. This ensured uniform surface at all bronze samples that is necessary to provide the same corrosion conditions. The grinded samples were washed by ethanol and dried by hot air stream. To prevent contact with the surrounding atmosphere and successive initiation of corrosion, the samples were stored in lockable polyethylene bags. This step was followed by the preparation of model corrosion layers. Hydrochloric and sulfuric acids were chosen as corrosive environments. Petri dish containing 20 ml of the selected acid was placed at the bottom of the desiccator. Samples were placed to the ceramic grate, over the dish, and they were corroded (in vapours of hydrochloric acid for 34 days and in vapours of sulfuric acid for 27 days). The corroded samples were treated using low-pressure hydrogen plasma excited by RF generator. Treatment of samples was carried out in quartz cylindrical reactor (length of 90 cm, inner diameter 9.5 cm) with copper electrodes placed outside. The pressure in the reactor was ranged around 160 Pa at hydrogen flow rate of 50 sccm during the experiments. The continuous and pulse modes (duty cycle of 25%, 50% or 75%) at peak power of 50–300 watts were used for the treatment of 90 minutes duration. The plasma treatment was monitored by optical emission spectroscopy of OH radical using compact Ocean Optics HR4000 spectrometer. Its integral intensity is proportional to the corrosion layer removal. The rotational temperatures of plasma were calculated using selected OH rotational lines, too. The sample temperature during the treatment was measured by thermocouple installed inside the additional non-corroded samples. The reduction of corrosion layer is successful when the maximum of relative intensity of OH radicals is produced and follow gradual decline. The samples which corroded in vapours of sulphuric acid and were treated in pulse modes with duty cycle of 25 % or with delivered power of 50 W has produced no maximum. To the remain samples the maximum although were observed, but reduced corrosion products on the surface were very cohesive. The maximum of relative intensity of OH radicals was observed at all samples corroded in vapours of hydrochloric acid. But there is problem with temperature of sample during experiment. The samples which layer of corrosion product was after experiment incoherent produced the layer of deposit tin. This effect formation at a higher temperature of sample during experiment and therefore with greater deliver energy.
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Mončeková, Miroslava. "Možnosti redukce šestimocného chromu při hydrataci portlandského cementu." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2012. http://www.nusl.cz/ntk/nusl-216811.
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The issue of Hexavalent chromium toxicity to Portland cement hydration is a very actual these days. It takes much effort to obtain a cement containing Cr(VI) less than 2 ppm. The primary objective of this diploma theses is to find appropriate reducing substances and specify their efficiency, as well as to make an attempt to optimize their dosage. As reducing substances there were plumbed sulphites and tin(II) salts. The influence of reducing substances applied to the hydration and cement properties were validated by strenght tests, the calorimetric measurement and the volume-variation measurement. And also the changes in hydration products microstructure of Portland clinker after the gypsum replacement by sulphite ions were plumbed. The study of microstructure is based on SEM and XRD methods.
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Sokol, Kamil. "Redukce speklí v obrazech z optické koherentní tomografie." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-219951.
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The thesis deals with speckle suppression in images acquired by optical coherence tomograph. It is divided into four parts. The first part describes basic information about the medical imaging method. It also deals with principle of measurement. The second section discusses the formation of image speckle and selected methods to reduce them. Next part is practical and consists of data acquisition, determination of the evaluation methodology and the implementation of speckle reduction methods. The last part is focused on testing and reviews of algorithms and discussion about their results.
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Flídrová, Kristýna. "Možnosti redukce kurzového rizika ve společnosti FLÍDR, s.r.o." Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2009. http://www.nusl.cz/ntk/nusl-222061.
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Master´s thesis deals with possibilities of exchange rates risk reduction in the company FLÍDR, s.r.o. Exchange rate volatility has begun to be a serious problem of many business entities. Unfortunately, the Czech Republic will not join Economic and Monetary Union of the European Union for longer time. The outcome of Master´s thesis is the suggestion of utilization of financial derivatives and proposal of new financial derivatives. Proposed financial derivatives are composed to minimize exchange rate risk in the company FLÍDR, s.r.o., and to minimize losses caused by exchange rate volatility of Euro currency.
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Řádková, Lucie. "Redukce korozních vrstev mosazi pomocí nízkotlakého nízkoteplotního plazmatu." Doctoral thesis, Vysoké učení technické v Brně. Fakulta chemická, 2015. http://www.nusl.cz/ntk/nusl-234528.
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This thesis presents results of the corrosion layers removal which could be found on the archaeological artefact surfaces. The low pressure low temperature plasma reduction was used for this purpose. Brass samples were chosen for this study. Two different ways have been used to form model corrosion layers. Several sets of corrosion layers were prepared in laboratory in two different corrosion atmospheres, namely ammonia atmosphere and atmosphere of hydrochloric acid. These samples were placed into desiccator. Small quantities of sand were added to some sets of samples so samples with sandy incrustation were prepared. The corrosion layers had been usually formed during four weeks. The second way, which was used to prepare model corrosion layer, was the natural corrosion in soil or compost. In this case, the corrosion layers had been formed approximately 2 years. The samples were treated in the low pressure (150 Pa) cylindrical Quartz reactor (90 cm long and 9.5 cm in diameter) with a pair of external copper electrodes connected via the matching network to a radiofrequency generator (13.56 MHz). The flows of working gases were set by independent mass flow controllers. Whole system was continuously pumped by the rotary oil pump which was separated from the discharge reactor by liquid nitrogen trap with aluminium chips eliminating dust and reactive species from the gas flow. Each sample was placed on a glass holder at the reactor center. Plasma was generated in pure hydrogen or in mixture of hydrogen and argon. Total flow of working gas was 50 sccm. Different ratios of gas mixture were tested, the ratio 30 sccm hydrogen and 20 sccm argon flows was the best. RF discharge was used in a continuous and pulsed regime. Pulsed mode was carried out with various duty cycle at the frequency of 1000 Hz. There were two ways of temperature monitoring. The sample temperature during the treatment was monitored by a K-type thermocouple installed inside the sample in the first case. Thermometer optical probe was connected to the sample surface by a small stainless plate and allowed continuous sample temperature monitoring in the second way. Safe object temperature for copper and copper alloys is 100–120 °C. To avoid exceeding this temperature, power control or the duty cycle in pulse mode were automatically controlled if thermometer optical probe was used. Plasma chemical treatment is based on generation of reactive atomic hydrogen in plasma discharge. The main reactions during reduction were reactions between oxygen and chloride contained in the corrosion layer and the hydrogen ions and neutral atoms generated in the plasma. These reactions create an unstable OH radical, which emits light in the region of 306–312 nm. This radiation was detected by the optical emission spectroscopy using Ocean Optics HR4000 spectrometer with 2400 gr/mm grating. Data obtained from this method were used to calculate rotational temperatures and integral intensity of OH radicals that were used for the process monitoring. Corrosion layer was not completely removed during the reduction, but due to the reactions which occur in the plasma corrosion layer became brittle and after plasma chemical treatment can be removed easily. The SEM-EDS material analyses were carried out before and after treatment of some samples. Some samples were analysed by XRD analysis. EDS analysis showed that amount of oxygen and chloride was decreased, mainly at 400 W pulse mode.
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Godula, Martin. "Redukce strategických her na jejich Best-Response ekvivalenty." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2011. http://www.nusl.cz/ntk/nusl-237085.
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The main goal of this masther thesis is design and implementation of library for reduction of strategy profiles of strategy games in normal form. Logics of library functionality will be based on suitable heuristics founded on methods of iterative elimination of dominated strategies and FDDS. Functionality of resultant library will be demonstrated on convenient problems.
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Křížová, Radka. "Ukázkové faktory redukce diabetes mellitus v závislosti na výživě." Master's thesis, Česká zemědělská univerzita v Praze, 2016. http://www.nusl.cz/ntk/nusl-257815.
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This thesis mainly deals with the description and interpretation of individual sections of diabetic diet. There are listed consequences when patient don´t care his disease. The thesis contains theory about the diabetic diet and practical analyzing the importance of adhering to proper diet by diabetic patients.
Initially the thesis focuses on the general classification of the disease, which is mainly the distinction between diabetes first and second type following are described in other types of diseases such as so-called secondary diabetes and gestational diabetes mellitus.
The following chapter is concerned with the correct nutrition for diabetes and describes the basic components of the diet and their appropriate inclusion in the diet of the patient. Diploma thesis build on the bachelor thesis about the same topic, so there are not various basic components of a diabetic diet completely described in detail. More emphasis was put on a more detailed description of the functions of individual vitamins in connection with diabetes mellitus. Furthermore, the work was focused on dietary supplements that could affect the course of disease.
The next chapter deals with obesity and metabolic syndrome. It is generally known that overweight with diabetes mellitus are closely associated. There are basic risks of the disease and limit values for its emergence.
The practical part is focused on adherence to diabetic diet connection with the reduction, a steady state of diabetes. The diploma thesis was focused on healthy lifestyle of patients who want to keep their disease under control. Results of 50 patients came from a specific diabetes clinic in Kralupy n./Vlt.. It was a roughly six-month interval measurement. The result are the values at the beginning and the end of the measurement. It was evaluated glycated hemoglobin, which saw improvement 14,1 % for men and 12,1 % for women. Furthermore, it was evaluated by weight loss. On average, the weight decreased by 2.56 kg for the entire measured sample. The last measured factor was blood pressure in which can not be significant progress because of such a small number of patients. Specifically, it was measured, systolic blood pressure decreased slightly for women and men. Diastolic pressure drops only to women, men, on the contrary increased.
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Maňák, David. "Redukce PAPR v OFDM a její simulace ve Scilabu." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-217816.
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Main goal of this dissertation is read over principal and properties of the OFDM modulation. Onward we become acquainted with basic methods for PAPR dynamics reduction in OFDM such as Clipping or Interleaving. Simulation of reduction methods will be realized in Scilab environment, in which are made basic functions for OFDM modulator and demodulator. Furthermore there are created functions for PAPR reduction methods. All established functions are implemented in the GUI.
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Harák, Petr. "Redukce neshodných dílů metodikou Six sigma ve firmě CCI." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2012. http://www.nusl.cz/ntk/nusl-230060.
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The dissertation deals point at issue of nonconforming components in CCI CR, Ltd., Special focus is on errors in machine cutting and in marking components, which lead to discrepancy of components with manufacturing documentation. The goal of dissertation is star-up a remedial process, which will reduce defective components. The result will be tested by the Six Sigma methodology.
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Urban, Josef. "REDUKCE DYNAMIKY SIGNÁLU V SYSTÉMECH S ORTOGONÁLNÍM FREKVENČNÍM MULTIPLEXEM." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2010. http://www.nusl.cz/ntk/nusl-233516.
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This doctoral thesis is focused into the area of multicarrier radio communications systems. These systems are perspective for current and incoming mobile communications and wireless networks. Advantages of multicarrier systems like better multipath propagation resistivity are redeemed by some disadvantages. The high peak to average power ratio of transmitted signal belongs to these disadvantages, for its inconvenience for high efficient power amplification. The thesis concerns with peak to average power ratio reduction methods for OFDM systems, that belongs to the most used multicarrier systems. One of the main objectives is the modification of the existing methods with the intention of complexity reduction. Following subject of interest is the analysis of suitable methods combinations possibilities for more significant peak to average power ratio reduction. One part of this thesis is research of influence of these methods on the OFDM signals with different parameters.
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Hromková, Ivana. "Příspěvek k problematice redukce průběžných dob ve výrobních systémech." Doctoral thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-239860.
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Presented PhD thesis aims at development of new methodologies and approaches to reduce lead times in production systems. Therefore the thesis examines in detail the design of new, more comprehensive approaches to shortening lead times. The dissertation describes the methodology of using these approaches in production systems, it is suggested their inclusion in the control structure of production and adequate managerial support for the successful application of these new approaches in the industry is developed. The first part summarizes current knowledge in the field of reducing lead times. The various methods that can be used for reducing lead times are defined and described, from which is selected discrete simulation of manufacturing systems as a suitable method for the purposes of issue development. The next part of this work is therefore devoted to simulation approach to reducing lead times and the factors that affect them, such as processing time, size of the batch, queue lengths, etc. In this part is also discussed the use of information technologies (programming languages, libraries, and software tools) that enable efficient creation of simulation models. The second part is focused on industrial applications implemented to reduce production lead times. Specific simulation analysis deal with, for example, reduction of the lead time for manufacture of surgical instruments, screws, slats, but also transport systems, optimization of production orders input to the production system, the issue of supply, etc. The second part also describes a practical approach to data transfer to / from the simulation model, simulation software connection to the ERP database of enterprise and energy intensity of production. The conclusion summarizes the findings that were detected on the issue of reducing lead times, and within the chosen methodology, simulation of manufacturing processes indicates possible further progress in the research and practical applications.
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Víteček, Jiří. "Redukce kovových artefaktů v CT datech se submikronovým rozlišením." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2019. http://www.nusl.cz/ntk/nusl-400977.
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This diploma thesis deals with reduction of metal artifacts in CT data with submicron resolution. The first part of this thesis briefly describes x-ray computed tomography followed by the description of artifacts of tomographic images and existing approaches of the reduction of metal artifacts. In the second part proposed methods of reduction of metal artifacts and their implementation in Matlab programming environment are described. Finally functionality of algorithms is tested on a newly created database and the results are compared, evaluated and discussed.
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Sázavská, Věra. "Příprava modelových korozních vrstev na železe a jejich plazmochemická redukce." Doctoral thesis, Vysoké učení technické v Brně. Fakulta chemická, 2013. http://www.nusl.cz/ntk/nusl-233369.
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The plasmachemical removal process of corrosion layers is based on a reduction effect of RF hydrogen low-pressure plasma, and it is used for archaeological objects. Incrustation layers on artifact surface become brittle and porous due to plasma processing. The structure and composition of corrosion layers is changed. Therefore, it is much easier to recover the original surface of the plasma treated artifacts in contrary to those treated by conventional ways. Moreover, we can save time on invasive and thus dangerous mechanical removal of corrosion layers as for example sanding is. After plasma treatment, we can observe fine details of the original surface and memory of tools used during its manufacturing. These details are important information on the origin and manufacturing methods of the artifacts. The plasma reduction process leads to the removal of impurities from cavities as well, and a function of mechanical components of archaeological object can be restored. Moreover, chlorides can be easily removed from the corrosion layers and thus any significant post-corrosion is protected. Each archaeological object is original and it has its own “corrosion history”. First, the object had been exposed to the atmosphere for a long time. Then, it had been often placed in a tomb or grave or it otherwise got into the soil or sea. Thus, each archaeological object was exposed to different corrosion stress (humidity, composition of corrosive environment, etc.). Due to these facts, any universal way of a corroded object treatment is very difficult or even impossible to propose. In this work, the problem was solved using model samples of common metals which were treated at various plasma treatment conditions. Archaeological objects made of iron are the most common artifacts, and the typical corrosion products on iron are akaganeite, rokuhnite, and szomolnokite. These three corrosion products were created on the model samples in laboratory and then, the plasmachemical reduction was applied for their removal. The experiment was done in a Quartz cylindrical reactor with capacitive coupled RF plasma created using outer electrodes. We used discharge power from 100 W to 400 W in a continuous or pulsed regime (duty cycle of 75 %, 50 % and 25 %). Flowing plasma was created in pure hydrogen at pressure of 150200 Pa. Sample temperature was monitored by a thermocouple, and it did not exceed 200C during all these experiments. This temperature is regarded as a limit temperature for metallographic changes of archaeological iron. Higher temperature can cause destruction of archaeological iron objects. The optical emission spectroscopy of OH radical was used for the process monitoring. We focused on the monitoring of OH-radicals generated in the plasma, which are characteristic species formed by this process. Each corrosion product has a different time evaluation of generated OH-radicals, which is closely related to the degradation of a given corrosion product. Corrosion layers were analyzed before and after the plasmachemical reduction by SEM-EDX. We have found that the plasmachemical reduction is not very suitable for the szomolnokite corrosion product, which is degraded with difficulty and at high applied powers, only. However, very good removal efficiency was obtained for the rokuhnite and akaganeite corrosion.
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Pařízek, Tomáš. "Redukce emisí škodlivých látek u jednotek pro termické zpracování odpadů." Doctoral thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2009. http://www.nusl.cz/ntk/nusl-233877.
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Havlena, Vojtěch. "Porovnávání jazyků a redukce automatů používaných při filtraci síťového provozu." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2017. http://www.nusl.cz/ntk/nusl-363849.
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The focus of this thesis is the comparison of languages and the reduction of automata used in network traffic monitoring. In this work, several approaches for approximate (language non-preserving) reduction of automata and comparison of their languages are proposed. The reductions are based on either under-approximating the languages of automata by pruning their states, or over-approximating the language by introducing new self-loops (and pruning redundant states later). The proposed approximate reduction methods and the proposed probabilistic distance utilize information from a network traffic. Formal guarantees with respect to a model of network traffic, represented using a probabilistic automaton are provided. The methods were implemented and evaluated on automata used in network traffic filtering.
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Červenková, Edita Bc. "Způsoby redukce relativní váhy veřejného dluhu ve vybraných evropských zemích." Master's thesis, Vysoká škola ekonomická v Praze, 2007. http://www.nusl.cz/ntk/nusl-1220.
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Diplomová práce se nejprve zabývá definováním základních pojmů z oblasti fiskální problematiky ? státní rozpočet, rozpočtový deficit a veřejný dluh. K provedení praktické části byly vybrány Irsko a Belgie, protože právě těmto státům se podařilo nejrazantněji snížit výši relativní váhy svého veřejného zadlužení v rámci zemí Evropské unie. Práce tak obsahuje popis vývoje hospodářství a nerovnováhy veřejných financí těchto států. K závěrečné analýze klíčových faktorů byly přibrány ještě Dánsko, jako třetí nejúspěšnější země, a Česká republika, která naopak představuje zástupce států s rostoucím poměrem veřejného zadlužení k HDP.
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Pikna, Ondřej. "Studium možností redukce objemových změn a vývoje hydratačních teplot v betonech." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-392333.
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Volume changes are one of the priority characteristics of concrete that plays an important role place mainly in the durability of structures as such. These low volume changes are required especially for structures as: industrial concrete floors, massive structures and waterproof structures. One of the possibilities in reducing these changes is the use of mineral admixtures with suitable grain curve of aggregate. Another possibility is the use of shrinkage reducing admixtures. There can occur problem with efficiency (long term age) with other components of the mixture. Therefore, the effort of this work is to use the avaible processes for maximum reduction of shrinkage and hydration temperatures.
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Kubák, Ivo Kristián. "Česká divadelní postmoderna a tvorba Jiř ího Havelky fenomenologická redukce fenoménu Havelka." Master's thesis, Akademie múzických umění v Praze.Divadelní fakulta. Knihovna, 2012. http://www.nusl.cz/ntk/nusl-155974.
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The thesis is in its first part focused to describe the current generation of directors, who started official creative careers after 1989. It locates three basic lines of staging procedures and in the second part aims on five directors of this generation, which currently teaches in the Department of Alternative and Puppet Theatre of The Theatre Faculty of the Academy of Performing Arts in Prague: Petra Tejnorová, Jiří Adámek, Martin Kukučka, Lukáš Trpišovský a Jiří Havelka. The latter is devoted to detail in the third part, which is based on available ctitic reflections of Havelka's work and tries to figure out how is this work received by critics and the public. Attachment contains complete list of Havelka scenical works.
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Štěpán, Petr. "Pokročilé metody ditheringu barevných obrazů, redukce barevného prostoru na n-prvkovou paletu." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2011. http://www.nusl.cz/ntk/nusl-237079.
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This thesis describes summarizing and comparsion of advanced dithering techniques used to reduce the image color space on n-dimensional palette. The goal is to create a set of basic methods including theirs enhancements and modifications focusing on the output image quality and maximum visual fidelity to the original image. Another part of this thesis is to analyze this methods using own comparsing method and design new dithering algorithm combining their advantages.
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Šnejdar, Martin. "Optimalizace technologického procesu na obráběcím centru." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2016. http://www.nusl.cz/ntk/nusl-256554.
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Objective of this work is optimization of a technological process at the machining center. The process of optimization concerns cost reduction and fabrication time reduction with automatization of fabrication by reducing the number of machine stoppings. It is achieved by introduction of an automatic measuring system of dimensional characteristics with system RENISHAW integrated at the machine. The objective is to achieve most elevated level of machine autonomy also by reducing the costs and fabrication time.
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Nárovec, Jiří. "Moderní metody denitrifikace uhelných kotlů." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-231795.
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V současnosti musí velké energetické podniky k dodržení emisních předpisů, zejména pak vyžadovaných limitů NOx, uplatňovat denitrifikační metody. Tématem předkládané diplomové práce jsou moderních denitrifikační metody a jejich praktické uplatnění v lokálních poměrech uhelného kotle s parním výkonem 640 t.h-1 v elektrárně Počerady. Práce obsahuje rešerši moderních denitrifikačních metod používaných velkými uhelnými kotli se zaměřením zejména na sekundární denitrifikační metody. Jsou uvažovány dvě možné varianty denitrifikace – varianta 1 využívá selektivní katalytickou redukci (SCR) a varianta 2 selektivní nekatalytickou redukci (SNCR) společně s nízkoemisními hořáky a stupňovaným přívodem spalovacího vzduchu. Pro výběr vhodné denitrifikační metody jsou studovány investiční náklady jednotlivých variant – nižší investiční náklady (o 19.4%) slibuje varianta 2. Při srovnávání SCR se SNCR vyšlo najevo, že investiční náklady metody SNCR jsou 5krát nižší než metody SCR. V souladu s investičními náklady, s dispozicí kotle a se složitostí jeho instalace je pro navazující studium problematiky využita varianta 2. Stěžejní část práce se zabývá stanovením optimálního tzv. teplotního okna pro konkrétní metodu SNCR. Těžištěm práce je tepelný výpočet ohniště a části deskového přehříváku pro stanovený rozsah paliv a výkon kotle v rozmezí 60-100%. S uvažováním výsledků z výpočtu jsou navrženy dvě vstřikovací roviny, které mají zaručit vysokou efektivitu denitrifikačního procesu při uvažovaných provozních podmínkách kotle. Diplomová práce rovněž diskutuje obecnou vhodnost instalace SNCR a SCR ve stávajících uhelných kotlích.
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Charvát, Lucie. "Deep Pushdown Automata and Their Restricted Versions." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2017. http://www.nusl.cz/ntk/nusl-363840.
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Pro přirozené číslo n, n-expandovatelné hluboké zasobníkové automaty vždy obsahují maximálně n výskytů nevstupních symbolů v jejich zásobníku v průběhu jakékoli kompilace. Jako hlavní výsledek, tato práce demonstruje, že tyto automaty mají stejnou vyjadřovací sílu jako automaty s #, nacházející pouze na dně zásobníku, a jediným dalším nevstupním symbolem. Z tohoto závěru vyplývá nekonečná hierarchie jazyků přijímaných těmito automaty.
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Šulc, Ondřej. "E-learning." Master's thesis, Vysoká škola ekonomická v Praze, 2008. http://www.nusl.cz/ntk/nusl-4985.
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The theoretical part of the thesis contains information about education in general, futhermore it describes general information on e-learning. In the end of this part there are described different ways how to implement e-learning in a company. Practical part concerns information about a company - PRAKAB PRAZSKA KABELOVNA, a.s., possible ways of aplication education. In the final part of the thesis a solution is recommended and compared with an opinion of the personal manager of this company.
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Alexová, Veronika. "Marketingový průzkum kupního chování v oblasti přípravků na redukci hmotnosti." Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2014. http://www.nusl.cz/ntk/nusl-224312.
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The subject of the thesis is design a marketing survey of purchasing behavior in weight-loss products and mapping of customer awareness of product line of XL-S Medical. This survey is based on a single personal interviews, from which the results are analyzed. Based on these results, the suggested measures that will lead to an increase of merchantability XL-S Medical.
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Písařovic, Antonín. "Implementace točivých redukcí v teplárenské praxi." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-219403.
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The thesis is devoted to the utilisation of expansion turbines in the thermal power stations and in the industry companies using gas pressure reduction for technology purposes. The theoretic part of this thesis deals with the technology equipment such as steam and gas turbines, generators and reduction stations. The special attention is given to the expansion turbines with regard to its dividing in two groups: for steam reduction and for gas reduction. The parctical part includes the preliminary and detailed calculation of the expansion turbin for parameters of reduction line for combustion turbines, the generator proposal and the possibility of power extraction. The economic part completes the thesis with the economic evaluation of investment efficiency.
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Cúth, Marek. "Separabilní redukce ve funkcionální analýze." Master's thesis, 2010. http://www.nusl.cz/ntk/nusl-282038.
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In the presented work we are studying, whether some properties of sets (functions) can be separably reduced. It means, whether it is true, that a set (function) has given property if and only if it has this property in a special separable subspace, dependent only on the given set (function). We are interested in properties of sets "be dense, nowhere dense, meager, residual and porous" and in properties of functions "be continuous, semicontinuous and Fréchet di erentiable". Out method of creating separable subspaces enables us to combine our results, and so we easily get separable reductions of function properties such as "be continuous on a dense subset", "be Fréchet di erentiable on a residual subset", etc. Finally, we show some applications of presented separable reduction theorems, which enable us to show, that some propositions proven by Zajíček, Lindenstrauss and Preiss hold under other assumptions as well.
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Musilová, Andrea. "Redukce hmotnosti u dospělých osob." Master's thesis, 2017. http://www.nusl.cz/ntk/nusl-344319.
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Title: Reduction of body weight of adults. Objectives: Aim of this thesis is to find out how many people have resorted to reduce their weight, for what reason and whether their attempts were successful. Methods: In my thesis I questioned 246 randomly selected respondents. Questioning was done by the form of inquiry. Respondents were people who live around me and my family. The condition for completing the questionnaire was age of 18 years or older, and access to an internet connection. Survey form was distributed electronically. Results: I found out that 38% of respondents aren't satisfied with their weight and therefore they usually decide to follow various forms of reducing modes. 82% of them follows different kinds of diets (reducing modes) multiple times. The reason for that is going back to regular diet habits and lack of exercise out of diet mode. 73% of respondents confirmed high activity during reducing modes, I consider that successfull. Keywords: Dietotherapy, active regiment, drinks regiment, the basic components of diet
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Neumannová, Jana. "Stacionární kola a redukce nadváhy." Master's thesis, 2007. http://www.nusl.cz/ntk/nusl-288477.
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Název diplomové práce Stacionární kola a redukce nadváhy Cíle práce Cílem bylo shrnout informace o obezitě a nadváze, vytvořit, podrobně popsat a následně vyhodnotit redukční program, který byl na základě dotazníkového průzkumu z roku 2005 (viz. má bakalářská práce) sestaven ze tří částí tj. Spinning Programu, pohybové aktivitě ve fitness a úpravě stravovacích zvyklostí klienta. , Soubor a metody Do studie informativního charakteru bylo zařazeno náhodným výběrem 41 žen, průměrný věk byl 36 let. Metodou řízeného rozhovoru byla odebrána osobní, pracovní, farmakologická a gynekologická anamnéza. Před začátkem redukčního programu a po osmi týdnech programu byla stanovena hmotnost (v kg), výška (v cm), obvody prsa - pas - boky (v cm), tloušťka podkožních řas podle Pařízkové a určeno celkové procento podkožního tuku. Z odebraných hodnot byl určen BM! a vypočítány hodnoty MSF, 65% SF max., 75% SF max., 85% SF max. Následně bylo provedeno vyšetření vybraných (ovlivněno odběrem anamnézy) zkrácených a oslabených svalů podle J andy. Metodou regresní analýzy na základě nashromážděných dat byla hodnocena závislost mezi naměřenými hodnotami a porovnány změny naměřených hodnot po ukončení redukčního programu. Výsledky Programu se zúčastnily ženy se sedavým zaměstnáním, a ženy na nebo po mateřské dovolené. S tím...
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Chvostek, Lukáš. "Redukce hmotnosti u plně zaměstnaných osob." Master's thesis, 2020. http://www.nusl.cz/ntk/nusl-434477.
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Title: Weight reduction in full-time employees Objectives: The aim of the work is to find out, by means of a search of domestic, foreign literature and scientific works, and the subsequent elaboration of a survey sheet. Interventions leading to weight reduction in adults fully working overweight or obese, and subsequent individualization of the intervention lasting 4 weeks, leading to weight reduction. Methods: The theoretical part will be a search of Internet resources, which will be obtained from the server PubMed and Google Scholar, and combined with available literary resources. In the practical part of the diploma thesis, data collection will be carried out using a survey. The survey will be created specifically for this research based on information from the theoretical part. The aim of the survey will be to record the weekly program of full-time employees with a focus on the composition and timing of meals and physical activity. The obtained data are processed using the spreadsheet program Microsoft office Excel 2013. The record of weekly intake and distribution of food will be evaluated using the Internet portal Caloric Table, where the intake in kJ was mapped for each proband. From the survey sheet, the meal record will be transferred to the calorie tables, where the equivalent of kJ and...
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Broža, Daniel. "Udržování a redukce váhy v boxu." Master's thesis, 2018. http://www.nusl.cz/ntk/nusl-387050.
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Title: Keeping and reducing weight in the boxing Aims: The aim of the diploma thesis is to find out which methods are used for sustain or reduction of boxers' weight in various weight classes. If this process affects their power, and which intervals they begin the reduction before the fight in. Methods: The observation as the quantitative method was used on the basis of public inquiry. Results: It follows that boxers use shorter and more intensive methods for their weight reduction rather than slow and careful methods for their organisms. Moreover, two thirds of respondents experience some changes in consequence of sustaining and reducing the weight. The majority of respondents mentioned they get the information how to sustain and reduce the weight in accordance with their own consideration. Keywords: Boxing, weight reduction, weight categories, dehydratation
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Šedivý, Ondřej. "Náhodné kótované množiny a redukce dimenze." Doctoral thesis, 2014. http://www.nusl.cz/ntk/nusl-338057.
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Random closed sets and random marked closed sets present an important general concept for the description of random objects appearing in a topological space, particularly in the Euclidean space. This thesis deals with two major tasks. At first, it is the dimension reduction problem where dependence of a random closed set on underlying spatial variables is studied. Solving this problem allows to find the most significant regressors or, possibly, to identify the redundant ones. This work achieves both theoretical results, based on extending the inverse regression techniques from classical to spatial statistics, and numerical justification of the methods via simulation studies. The second topic is estimation of characteristics of random marked closed sets which is primarily motivated by an application in the microstructural research. Random marked closed sets present a mathematical model for the description of ultrafine-grained microstructures of metals. Methods for statistical estimation of their selected characteristics are developed in the thesis. Correct quantitative characterization of microstructure of metals allows to better understand their macroscopic properties.
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Cúth, Marek. "Separabilní redukce, systémy projekcí a retrakcí." Doctoral thesis, 2014. http://www.nusl.cz/ntk/nusl-338473.
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This thesis consists of four research papers. In the first paper we study whether certain properties of sets (functions) are separably determined. In our results we use the "method of elementary submodels". In the second paper we generalize some results concerning Valdivia compacta (equivalently spaces with a commutative retractional skeleton) to the context of spaces with a retractional skeleton (not necessarily commutative). The third paper further studies the structure of spaces with a projectional (resp. retractional) skeleton. Under certain conditions we prove the existence of a "simultaneous projectional skeleton" and we use this result to prove other statements concerning the structure of spaces with a projectional (resp. retractional) skeleton. In the last paper we study the method of elementary submodels in a greater detail and we compare it with the "method of rich families". 1
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Jankových, Miroslav. "Elektrochemická redukce nitroskupiny v průtokovém reaktoru." Master's thesis, 2020. http://www.nusl.cz/ntk/nusl-434990.
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Charles University Faculty of Pharmacy in Hradec Králové Department of Pharmaceutical chemistry and Pharmaceutical analysis Student: Miroslav Jankových Supervisor: doc. PharmDr. Radim Kučera, PhD. Consultant: PharmDr. Tomáš Holas, PhD. Title of diploma thesis: The electrochemical reduction of the nitro group in a flow reactor The aim of this diploma thesis is to study the electrochemical reduction within the flow reactor. The combination of these two methods provides enviromentaly-friendly and interesting method for the manufacturing of active pharmaceutical ingredients. Our object was to find out if the reaction really goes on. After that our goals were to optimize the reaction parameters. We executed some of the experiments to understand the parameters such as: flow rate, voltage, electric current, electrolyte. These parameters we combined to see their effect on the reaction results. The outcome of the thesis is mainly basic information about impact of parameters mentioned above. From the series of experiments the best parameters are flow rate 0,1 ml.min- 1 , voltage 0,8 - 2,0 V, electric current 100 - 150 mA, electrolyte NH4Cl, reaching conversion up to 96%.
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Mazur, Dominik. "Generalizace vodních toků metodou částečné prostorové redukce." Master's thesis, 2020. http://www.nusl.cz/ntk/nusl-435878.
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This master thesis is focused on cartography generalization of a rivers using collapse and partial collapse method with the usage of straight skeleton data structure. The proposed method was designed for large scale maps in geographical view and for medium scale maps in cartographic view (till 1 : 100 000). The thesis is focusing on width of a river as stand alone criteria for generalization decision. The presented solution represents set of a criteria which decides on generalization of a river. The presented thesis also solves problematic situations that exist on a river such as islands, junctions, shoulders or bifurcation. The thesis also includes proposed generalization algorithm which is using straight skeleton data structure. The algorithm is implemented in C++ programming language in Microsoft Visual Studio IDE. The algorithm uses external libraries Qt and CGAL (Computational Geometry Algorithms Library) for functioning. Algorithm results are saved in ESRI geodatabase with the usage of Python 2.7 programming language and external library ArcPy. Water areas from ZABAGED were chosen as appropriate data for testing. Achieved results of generalization are presented on test data for various scales and they are compared with base maps of Czech Republic. Keywords: digital cartography, cartography...
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Hübsch, Ondřej. "Redukce počtu parametrů v konvolučních neuronových sítích." Master's thesis, 2021. http://www.nusl.cz/ntk/nusl-447970.
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In the current deep learning era, convolutional neural networks are commonly used as a backbone of systems that process images or videos. A lot of existing neural network architectures are however needlessly overparameterized and their performance can be closely matched by an alternative that uses much smaller amount of parameters. Our aim is to design a method that is able to find such alternative(s) for a given convolutional architecture. We propose a general scheme for architecture reduction and evaluate three algorithms that search for the op- timal smaller architecture. We do multiple experiments with ResNet and Wide ResNet architectures as the base using CIFAR-10 dataset. The best method is able to reduce the number of parameters by 75-85% without any loss in accuracy even in these already quite efficient architectures. 1
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Ševčíková, Renáta. "NP vyhledávací problémy a redukce mezi nimi." Master's thesis, 2012. http://www.nusl.cz/ntk/nusl-305877.
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NP search problems and reductions among them Renáta Ševčíková In the thesis we study the class of Total NP search problems. More attention is devoted to study the subclasses of Total NP search problems and reductions among them. We combine some known methods: the search trees and their relation to re- ductions, the Nullstellensatz refutation and the degree lower bound based on design to show that two classes of relativized NP search problems based on Mod-p counting principle and Mod-q counting principle, where p and q are different primes, are not reducible to each other. This thesis is finished by a new separation result for p = 2 and q = 3.
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Lišková, Jana. "Analytická studie redukce rhenistanu amonného vybranými redukčními činidly." Master's thesis, 2018. http://www.nusl.cz/ntk/nusl-387953.
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This thesis is focused on analysis of reduction of ammonium perrhenate using less frequent reducing agents. Ascorbic acid and acetylhydrazine were chosen as less common reducing agents. Reductions were observed leveraging capillary zone electrophoresis and UV/Vis spectroscopy. Measurements were carried out both in acidic and in basic environments. Reduction of peak area of ammonium perrhenate was observed using capillary zone electrophoresis after addition of reducing agent. Rate of absorption of ammonium perrhenate was monitored with UV/Vis spectroscopy. Furthermore, the possibility of shifting the equilibrium of the reaction to the benefit of the reduction products was monitored by the addition of the complexing agent. Py- rogallol (benzene-1,2,3-triol) was used as the ligand and acetylhydrazine was selected as the reducing agent. The reduction was monitored by capillary zone electrophoresis. The identity of the resulting complex was confirmed with ESI/MS. Keywords rhenium, rhenium complexes, ascorbic acid, acetylhydrazine, capillary zone electrophore- sis, UV/Vis spectroscopy, mass spectrometry
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Majtnerová, Lucie. "Vliv redukce srážek na dostupnost dusíku pro rostliny." Master's thesis, 2008. http://www.nusl.cz/ntk/nusl-95209.
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