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Směřuje Slovenská Republika k vytvoření optimální měnové oblasti s eurozónou?
Špániková, Eva ; Klosová, Anna (advisor) ; Gullová, Soňa (referee)
The goal of this diploma thesis is to assess the suitability and readiness of the Slovak Republic to adopt a single European currency. In analyzing the costs and benefits relating to Slovakia?s accession to the EMU, this thesis is guided by the theory of the OCA. The thesis provides a survey of the OCA theory, attempts to measure some of the OCA indicators and calculate OCA index for Slovakia. The results suggest that Slovakia fulfils the necessary condition for joining the monetary union, i.e. it is relatively well aligned with the euro area. The diploma thesis concludes that Slovakia is relatively suitable and well-prepared to join the euro area in 2009.
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Analýza zásob a možnosti optimalizace zásob ve společnosti TE Connectivity
Kocourková, Blanka ; Pánková, Ludmila (advisor)
Ve své práci se chci zabývat možnostmi optimalizace zásob ve společnosti TE Connectivity.
Nadnárodní společnost TE Connectivity se zabývá jednoduše řečeno "propojováním" ve dvaceti různých odvětvích (aerospace, automotive, industrial, healthcare, medical, military, sensor solutions, rail atd.).
Mým cílem je zaměřit se na odvětví Appliances, které je součástí výrobního závodu působícího v Trutnově. TE Connectivity se zde zabývá výrobou teplem smršťovacích hadiček, identifikačních štítků a speciálních konektorů.
V první části práce se snažím: popsat činnosti společnosti, její globální cíle a analyzovat stávající systém zásobování výroby. Druhá část práce je zaměřena na možnosti optimalizace zásob.
Cílem této práce je najít optimální způsob zásobování a skladování s ohledem na globálně stanovené cíle společnosti, který vede ke snížení hodnoty zásob, zvýšení obrátkovosti zásob a snížení nákladů na skladování.
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Application of queuing theory model
Krausová, Lenka ; Kvasnička, Roman (advisor) ; Dömeová, Ludmila (referee)
The goal of this bachelor thesis is detailed description of queuing theory. The goal is to analyse queuing system in company ČEZ and to suggest practical steps for the system improvement.
Thesis is divided into two major parts. Theoretical part describes queue theory in detail, its models and characteristics and serves as baseline for practical part.
In the practical part of thesis, real-life queuing system of company ČEZ will be analyzed. System will be described by chosen model and additional characteristics will be calculated. Based on several projections, most cost-effective variant will be chosen. In the conclusion part, practical steps will be presented in order to minimalize costs.
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Analysis of selected indicators of marketing on social networks
Pejcha, Martin ; Prášilová, Marie (advisor) ; Pilař, Ladislav (referee)
Thesis deals with the development of investment in marketing on social networks in selected companies and also the perception of advertising from the perspective of network users. It analyzes the development investment through time series. Data for the analysis were provided by companies, which are the Commercial Bank, Inc., Prague Chocolate, Ltd. and Stunnview, Ltd. To assess the impact of advertising on users of social networks was used own survey, which was conducted from November 25, 2016, to 31 January 2017. By using the questionnaire was possible to examine to what extent the users of social networks are influenced by advertising when deciding to purchase products, if users follows the discussion and evaluation of products, or to what extent of the evaluation they actively involved. The results were compared with the investigation carried out by the Czech Statistical Office in 2016. The data are compiled using statistical methods.
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Brass Corrosion Layers Reduction by Low-Pressure Low-Temperature Plasma
Řádková, Lucie ; Slavíček,, Pavel (referee) ; Zahoran,, Miroslav (referee) ; Krčma, František (advisor)
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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Wavelength Standard for Optical Communication in C Band
Růžička, Bohdan ; Wilfert, Otakar (advisor)
The thesis presents design, development and realization of laser system with stabilized optical frequency which could become the basis of an etalon of wavelength for the telecommunication band of the near-infrared spectral region. Semiconductor DFB laser diode is used as a tunable source of radiation with narrow linewidth. Its optimum operation is ensured by especially designed current and temperature controller. The laser is prestabilized using FM spectroscopy technique to the passive Fabry-Perot cavity. This fast feed-back loop is able to improve spectral characteristics of the laser. The center frequency of the F.-P. cavity - the laser optical frequency is locked by a slow second feed-back loop to the absorption spectral line of acetylene 13C2H2 gas. The slow control loop is based on the third derivative spectroscopy technique. Relative stability at the level of 10E-12 was achieved.
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Design and management of WDM systems for optical networks
Červenka, Vladimír ; Šporik, Jan (referee) ; Tejkal, Vladimír (advisor)
This thesis describes single types of wavelength-division multiplex (WDM) according to the International Telecommunication Union (ITU-T). This work offers an overview of components and evaluation of critical parts of network design utilizing WDM technology. There are depicted typical properties, suitable components and channel spacing for each category. Suitable optic fibers according to ITU-T and characteristics of negative effects can be found in the work as well. Furthermore, there are presented most important optic sources, optic amplifiers, optic detectors with filters their requirements and application. They are especially important for achieving operation of WDM system. The fifth chapter considers impact of negative effects in fiber optics and their influence on the system. Then, a WDM system is designed along with management and monitoring the physical layer. The work also presents 1,33 Tbit/s (32 × 42,7 Gbit/s) WDM transmission over 300 km (with three 100 km spans) of post-compensated non-zero dispersion-shifted fiber (NZDSF) LEAF. The capacity of 400 Tbit/s×km is achieved in a single 25,6 nm C band using non-return-to-zero differential phase-shift-keyed modulation (NRZ-DQPSK), balanced detection and erbium-doped fiber amplification. Together with design of transmission system a several simulative analysis has been carried out in order to find the optimum configuration (such as number and distances between amplifiers, length of spans or the way of dispersion compensation) for a high bit rate optical transmission system. It was used a program OptiSystem 8.0.
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Following of cooper complexation with humic acids by fluorescence method
Hladík, Tomáš ; Pospíšilová, Ľubica (referee) ; Fasurová, Naděžda (advisor)
Humic acids have high ability to form stable complexes with copper ions, which influences their toxicity in environment. Fluorescent properties of sodium salt of humic acid, humate, isolated from South Moravian lignite, and its complexation behaviour with copper ions were investigated using emission, excitation and synchronous fluorescence spectroscopy. Both fluorescence emission and synchronous fluorescence spectra showed that humate form complex with copper since fluorescence intensity was quenched upon addition of copper ions to the humate samples. The aim of the diploma thesis was to found applicable ion concentration to observation fluorescence quenching and to determine the main fluorophore, which is affected by complexation through the use of synchronous fluorescence spectroscopy.
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