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Use of online marketing
LEFAN, Radek
The aim of this thesis is to evaluate the current utilization of online marketing in a selected subject and to develop specific recommendations for innovation. The collaborating entity for this research is LH PARKHOTEL****Hluboká nad Vltavou. The first part of the thesis consists of a literature review, providing fundamental concepts for the addressed issue. The second part outlines the methods employed to obtain necessary data, including content analysis, questionnaire survey, and individual interview with the company manager. Content analysis was conducted based on publicly available information and provided internal information. A total of 106 respondents participated in the questionnaire survey, aimed at gaining insight into respondents' attitudes and opinions on various marketing tools in the context of accommodation selection. Subsequently, individual interview was conducted to gather insights from the company manager regarding online marketing and its management within the selected subject. Analysis of the obtained data revealed that the most effective online marketing tools for the selected subject are websites and the portal Booking.com. These results were corroborated by both the company manager and the questionnaire survey results, where respondents selected websites as the most used source of information and Booking.com as the most used platform for accommodation selection. Additionally, suboptimal management and the overall state of social media were identified, which play a significant role in today's context, as confirmed by respondents in the questionnaire survey. Hence, the selected subject does not fully exploit the potential offered by social media. Therefore, steps have been proposed to enhance social media management to reach a wider customer base.
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Mathematics textbooks for secondary schools from the point of view of beginning teachers.
KOSOVÁ, Kateřina
This master thesis deals with mathematics textbooks designed for the lower-secondary school. The aim of the work was to find out which mathematics textbooks are the mostly used by teachers in elementary schools in České Budějovice, how and to what extent teachers use textbooks and how do they evaluate them. The thesis is divided into two parts - theoretical and practical. The theoretical part defines the concept of a textbook, its function, structure, the issue of selection of a textbook and the results of research related to how teachers use textbooks. The practical part is based on a questionnaire survey carried out between teachers of mathematics at the lower-secondary school in Ceske Budejovice. At first, work procedure and the research method are described and then the results of the research are provided. Based on research, the most used textbooks for the sixth grade of elementary school are compared between themselves from the perspective of a novice teacher. The conclusion of the practical part of my diploma project is devoted to comparing the topic of axial symmetry in the selected textbooks that were chosen by the teachers in the questionnaire included in this thesis.
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Development of graphomotor skills in preschool children through musical activities
ŽOFKOVÁ, Lucie
This bachelor thesis deals with the development of graphomotor skills from simpler to more complex graphomotor elements. The aim of my bachelor thesis is to create a program for preschool children supporting the development of graphomotor skills through musical activities. The thesis comprises both theoretical and practical parts. The theoretical section focuses on clarifying key concepts related to preschool education. It mentions psychomotor development, which discusses the abilities and skills of children in the preschool period. Another chapter addresses graphomotor development, describing individual graphomotor elements. Further chapters are devoted to musical activities and their classification, the development of children's drawing, and the role of play and fairy tales in the preschool period. In the practical part, the created program will be tested. Units of the program, motivated by specific graphomotor elements, will be described here, and their functionality will then be verified in two age-differentiated classes. The units will subsequently be evaluated using observation and interview methods. In the conclusion of the thesis, the idea of whether movement combined with music has a positive impact on the development of a child's graphomotor skills is reflected upon.
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Study of Nanocomposites for Electrical Insulation
Klampár, Marián ; Mentlík, Václav (referee) ; Váry,, Michal (referee) ; Liedermann, Karel (advisor)
The dissertation thesis submitted deals with the study of dielectric properties of epoxy nanocomposites containing nanoparticles of inorganic oxides. These nanocomposites may have a promising technologic application for electric insulations in view of their higher resistance against partial discharges; yet information about their behavior in the course of ageing is not available. If at least a partial mass replacement of the currently used epoxy insulation with nanocomposite-based insulations is due to occur, the knowledge of the changes of their dielectric properties in the course of their operation will become indispensable. Within the framework of this dissertation, ensembles of samples of epoxy resins without fillers and with Al2O3, WO3, TiO2 and SiO2 fillers in the form of nanopowders, in concentrations up to 12 wt %, have been prepared. These ensembles have been measured prior to ageing and exposed to long-time (up to 5000 hours) ageing at increased temperatures 200, 250 and 300 °C and in a few cases also at 330 and 360 °C. Samples were measured in the course of ageing roughly in a logarithmic time series after 1, 2, 5, 10, 20, 50, 100, 200, 500, 1000, 2000 and 5000 hours. The measured quantities included complex permittivity , internal resistivity i and loss factor tan at temperatures ranging from -153 °C to +167 °C and in the frequency range 10-2 – 106 Hz. Changes in nanocomposites have been investigated using not just dielectric spectroscopy measurements, but other methods, too, namely Fourier-transformed infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and scanning electron microscopy (SEM). The experiments have proved that materials with different fillers respond to the same concentrations of various fillers in different ways. The addition of nanoparticles, without the addition of microparticles, at a relatively low concentration (max 12 wt %), was not sufficient for reaching fundamental changes in dielectric spectrum; only smaller changes of dielectric strength and shifts of relaxations and in relaxation maps have occurred. Out of more pronounced changes, increase of concentration of the SiO2 filler in the epoxy matrix brings about a decrease of electrical conductivity in the resulting nanocomposite. The TiO2 filler had a different impact. Different TiO2 concentrations make their marked appearance in the region between the relaxation and relaxation. The TiO2-filled nanocomposites do not exhibit the unambiguous dependence of electrical conductivity on nanofiller concentration. It can be concluded that the mere addition of nanoparticles, without the addition of established microparticles, does not change the dielectric spectrum substantially. Generally, a serious problem was the production of the nanocomposite with a uniform distribution of nanoparticles. The preparation of such a nanocomposite was not trivial and, in industrial applications, this issue will require a specific focus, so as to avoid the formation of undesirable aggregates. Within the framework of this research, a methodology for the production of an epoxy nanocomposite has been developed with as high as possible uniformity of nanoparticle distribution.
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Storage hall
Ščudla, Pavel ; Kalánek, Jiří (referee) ; Ostrý, Milan (advisor)
The master´s thesis on the topic Storage hall is processed in the form of project documentation for the realization of the new building. This building is projected on a plot 2828/108, 2828/106, 2828/105, 2828/104, 2828/222 and 2828/107 in the cadastral area Brno – Cernovice. This building is adjoined to the existing production hall and is divided into two parts. This parts are storage and administration. The administrative part has two floors and includes office space and hygienic facilities for own employees. The storage part is determined for storing of plastic products.
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Tools for the Punching Process
Jelínek, Daniel ; Šrajer, Jan (referee) ; Peterková, Eva (advisor)
Elaborated project is focused on the study of die cutting/punching technology and its aim is research and comparison of machines and principles used, given to the processed material. Within the project, differences between two types of tools used are compared, namely for die cutting of cardboard sheets and punching of metal sheets. The project also includes a design of die cutting tool for pharmaceutical folding boxes with complete stripping tool and counter plate on automated die cutting press Bobst SPanthera 106 LE.
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Study of the Ta2O5 insulating layer degradation
Velísek, Martin ; Majzner, Jiří (referee) ; Sedláková, Vlasta (advisor)
The aim of the thesis is to examine the dielectric function Ta2O5 insulating layers in tantalum capacitors. The capacitor plugged in the regular mode represents a MIS structure of reverse direction. Three different factors can be determined for the residual current of the component according to its charge transmission mode: the ohmic, Pool–Frenkel, tunnel and Schottky. An apparatus was constructed by the author of the thesis to measure the temporary connection between residual current and rise of temperature of the tantalum capacitors. Annealing of three different sets of tantalum capacitors made by different producers was performed at the temperature of 400 K and nominal voltage of 35 V during the period of 20 days.The experiment has proved the residual current in the electric field changes with rising temperature in time as a result of the ion movement. The singular factors of the residual current are influenced during the process. By the “ion movement” is meant the ion drift influenced by the attached electric field and diffusion caused by the concentration gradient. First, the samples were being annealed for c. 2 x 106 s, and then the residual current was being regenerated under the voltage of 5 V for 106 s. The residual current values increased considerably after annealing, and decreased again to more or less the original level after the regeneration, some of the samples reaching even values bellow the original level. The VA characteristics of the samples measured before and after the process of controlled obsolescence, and after the regeneration prove not only a change in parameters of the different current factors, but also a change of the current transmission mechanism employed in the process.
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Diaphragm discharge in organic dye solutions
Pajurková, Jana ; Možíšková, Petra (referee) ; Kozáková, Zdenka (advisor)
This Diploma thesis was focused on the degradation of dyes Saturn Red L4B (Direct Red 79) and Saturn Blue LB (Direct Blue 106) by DC diaphragm discharge (DC-DD). Supplied power was between 160 and 180 W. Conductivity and pH were changing at each electrode area during the DC diaphragm discharge, therefore the effect of pH and conductivity changes on the dye solution itself were examined. All samples were measured by UV-VIS spectrometer in the wavelength range of 300–800 nm. No significant dependence of dye absorption spectra on conductivity was observed, while pH significantly affected the absorption curves of dyes. Ageing of dye spectra showed significant changes of Saturn Red L4B. Next task was the comparison of dyes destruction efficiency by DC-DD, audiofrequency diaphragm discharge (AF-DD) and electrolysis. Dye decomposition by AF-DD was not observed at set conditions (voltage of 80–120 V, current of 2.2 A and frequency of 2 kHz). In the case of DC diaphragm discharge the electrolysis played an important role. Decomposition efficiency of the dyes by electrolysis was up to 15 %. The pumping effect in the DC diaphragm discharge was also investigated. Although the individual electrode areas were linked only by a small pinhole in a nonconductive barrier (the pinhole diameter of 0.3 mm), solutions of the anode and cathode compartment interacted with each other up to 10 %. Finally, the degradation products of Saturn Red L4B treated by DC-DD in two electrodes parts are also described. Decomposition products were determined by high performance liquid chromatography (HPLC) combined with the mass spectrometer.
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Study of Plasma - Liquid Interactions
Němcová, Lucie ; Brablec, Antonín (referee) ; Obradovic, Bratislav (referee) ; Krčma, František (advisor)
Disertační práce se zabývá detailním studiem vlastností různých elektrických výbojů generovaných ve vodných roztocích. Tyto výboje se staly v posledním desetiletí velmi populárním tématem, a to zejména díky mnoha praktickým využitím jako například v biomedicíně, čištění odpadních vod, ekologii nebo nanoinženýrství. Studium je zaměřeno na generaci peroxidu vodíku, jakožto jednu z nejvýznamnějších částic generovaných právě elektrickými výboji v kapalinách. Pro první část této práce byla využita speciální výbojová komora zkonstruovaná na Fakultě chemické Vysokého Učení Technického v Brně. Komora byla rozdělena tenkou diafragmovou přepážkou na dvě poloviny, přičemž uvnitř přepážky se nacházela malá dírka. V každé části komory se nacházela jedna elektroda, a obě dvě části komory byly vyplněny kapalinou. Ze zdroje bylo do kapaliny aplikováno vysokofrekvenční napětí (1 a 2 kHz), které tak vlastně upravovalo roztok chloridu sodného (1.5 l). Bylo zjištěno, že tento druh napětí, v porovnání s DC, nezpůsobuje nežádoucí přehřívání roztoku (počáteční vodivost 100 - 800 S/cm) během jeho úpravy při zachování účinnosti produkce peroxidu. Experimentální aparatura pro druhou část práce byla sestavena na Gentské Univerzitě v Belgii. Stejnosměrný výboj byl generován v bublinách plynů (He, Ar, N2, vzduch) v prostředí vodných roztoků. Byla studována generace peroxidu vodíku a odbourávání organických barviv přítomných ve zkoumaném roztoku. Ke generaci peroxidu vodíku byl použit roztok NaH2PO4 . 2H2O (5 microS/cm, V= 750 ml), ke zkoumání rozkladu barviv byly použity roztoky organických barviv Direct Red 79 (20 mg/l) a Direct Blue 106 (20 mg/l, V= 750 ml). Minimální koncentrace peroxidu vodíku byla naměřena při aplikaci proudu 10 mA, zatímco maximální koncentrace peroxidu vodíku byla zaznamenána při použití proudu 30 mA. Rozklad organických barviv vykazoval stejné vlastnosti. Čím vyšší byla dodávaná energie, tím více barviva se odbouralo. Třetí část práce probíhala ve spolupráci s Queen's University of Belfast, Centrum for Plasma Physics, UK. K realizaci experimentů bylo využito vysokofrekvenčního plazmového skalpelu (Arthrocar). Bylo zjištěno, že hodnota koncentrace peroxidu vodíku dosahovala maxima v roztocích s nepatrným přídavkem alkoholu (0.25 %). Celkem byly studovány čtyři 0.15 M roztoky BaCl2, Na2CO3, KCl a NaCl (V= 20 ml), jejichž počáteční vodivost se pohybovala kolem 13 mS/cm. Z výsledků bylo patrné, že největší rozdíl hodnot pH byl zaznamenán u roztoků s přídavkem ethanolu. V optických emisních spektrech byly identifikovány především radikály OH, které jsou prekurzory peroxidu vodíku. Výsledky ukázaly, že plazma v takovémto roztoku je stále tvořeno, což může být považováno za první krok generace plazmatu v organických sloučeninách. Poslední část práce byla zaměřena na tzv. mikroplazmatický jet v přímém kontaktu s kapalnou fází. Tato experimentální práce byla realizována na pracovišti Nanotechnology & Integrated Bio-Engineering Centre (NIBEC), University of Ulster, UK během studijní stáže. Jako vodivé médium byl použit roztok trihydrátu kyseliny chlorozlatité s různou počáteční vodivostí. Zajímavým zjištěním je fakt, že při tomto druhu měření bylo generováno stabilní plazma i při velmi malém výbojovém proudu (0.05 a 0.2 mA), a tedy i peroxid vodíku vznikal při velmi malé vstupní energii, což může být považováno za velmi dobrý výsledek.
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Elektromagnetic field mapping in tissue
Port, Martin ; Čížek, Martin (referee) ; Rozman, Jiří (advisor)
This thesis is an introduction to the modeling of electromagnetic fields in the tissue and is focused on the knowledge of electromagnetic field theory. Maxwell's equations and their solutions are described the spread of plane waves in the environment. It also discusses the exposure limit values of specific absorbed power and hygienic limits based on the standards in force in the Czech Republic on health protection against nonionizing radiation in accordance with Government Regulation No. 106/2010 Coll. It also deals with the software interface in COMSOL Multiphysics 4.2 for solving physical modeling and simulation. There is mention of the RF module, which is used for modeling. Work mentions in detail about the menu of the program and the most important part - the Model Builder.
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