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Electrospinning and characterization of fibrous structure for piezoapplications
Svobodová, Anežka ; Kaštyl, Jaroslav (referee) ; Částková, Klára (advisor)
The master’s thesis deals with the preparation and characterization of PVDF-based composite fibrous layers prepared by electrospinning. Ceramic particles TiO2, BaTiO3 and BCZT were used as fillers. The fibers were prepared containing 10, 20, 30, 40 and 50% of these particles and then their morphology, piezoactive phase representation and dielectric characterization were characterized. The effect of the presence of particles on the fiber diameter and on the crystallinity fraction of the polymer was shown. Particle size significantly influenced their distribution in the fibers. Piezoelectric particles further influenced the content of electroactive phases beta and gamma. The highest proportion of electroactive phases was determined in BaTiO3 filled fibers, which reached up to 98%. For the BaTiO3 filled fibers, the dielectric constant values were also measured, which reached lower values than expected due to the high porosity of the prepared fibers The as-prepared fibers can be considered promising not only for piezoapplications, therefore, optimization of their preparation and measurement of electrical characteristics will be further studied.
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Rail materials and profiles in rail transportation
Svobodová, Anežka ; Kvarda, Daniel (referee) ; Galas, Radovan (advisor)
This bachelor’s thesis is focused on the issue of the choice of rail materials and profiles. The aim is to give a comprehensive overview of the current situation in Czech Republic and some other foreign countries. The first part is dedicated to rail steels with description of structure, current usage and indication of the scopes of consecutive development. In the second part, there are described the most frequent profiles, their history and the current state. This thesis includes also discussion part which compares current problems and requirements that can be significant to some possible research.
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Sales Promotion and Advertising of Company
Svobodová, Anežka ; Havíř, David (referee) ; Mráček, Pavel (advisor)
The bachelor’s thesis focuses on the subject of online marketing communication of the company Sýry & Vína Večerka. It aims particularly at sales promotion and advertising. The thesis is based on the information described in the first, theoretical part of the thesis. The practical part examines and evaluates the current state of company, competing companies and at the end is supplemented by marekting research. Based on the obtained results from analyses, changes are suggested to adjust the online communication mix.
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Sales Promotion and Advertising of Company
Svobodová, Anežka ; Havíř, David (referee) ; Mráček, Pavel (advisor)
The bachelor’s thesis focuses on the subject of online marketing communication of the company Sýry & Vína Večerka. It aims particularly at sales promotion and advertising. The thesis is based on the information described in the first, theoretical part of the thesis. The practical part examines and evaluates the current state of company, competing companies and at the end is supplemented by marekting research. Based on the obtained results from analyses, changes are suggested to adjust the online communication mix.
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Electrospinning and characterization of fibrous structure for piezoapplications
Svobodová, Anežka ; Kaštyl, Jaroslav (referee) ; Částková, Klára (advisor)
The master’s thesis deals with the preparation and characterization of PVDF-based composite fibrous layers prepared by electrospinning. Ceramic particles TiO2, BaTiO3 and BCZT were used as fillers. The fibers were prepared containing 10, 20, 30, 40 and 50% of these particles and then their morphology, piezoactive phase representation and dielectric characterization were characterized. The effect of the presence of particles on the fiber diameter and on the crystallinity fraction of the polymer was shown. Particle size significantly influenced their distribution in the fibers. Piezoelectric particles further influenced the content of electroactive phases beta and gamma. The highest proportion of electroactive phases was determined in BaTiO3 filled fibers, which reached up to 98%. For the BaTiO3 filled fibers, the dielectric constant values were also measured, which reached lower values than expected due to the high porosity of the prepared fibers The as-prepared fibers can be considered promising not only for piezoapplications, therefore, optimization of their preparation and measurement of electrical characteristics will be further studied.
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Rail materials and profiles in rail transportation
Svobodová, Anežka ; Kvarda, Daniel (referee) ; Galas, Radovan (advisor)
This bachelor’s thesis is focused on the issue of the choice of rail materials and profiles. The aim is to give a comprehensive overview of the current situation in Czech Republic and some other foreign countries. The first part is dedicated to rail steels with description of structure, current usage and indication of the scopes of consecutive development. In the second part, there are described the most frequent profiles, their history and the current state. This thesis includes also discussion part which compares current problems and requirements that can be significant to some possible research.
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Increasing age of primigravidae in the Czech Republic
Svobodová, Anežka ; Kulhavá, Miluše (advisor) ; Lukášová Jeřábková, Lenka (referee)
Increasing age of primigravidae is discussed topic nowdays. It's a trend that also affects the Czech Republic - The Czech Statistical Office shows that the process of increasing age of primigravidae progresses since 1990 till now and that is why I consider it important to talk about this issue. The main objective of this work is to determine the causes of the increasing age of primigravidae in the Czech Republic. Sub-objectives are: to determine if socioeconomic factors are reasons for delaying childbirth, to determine whether delaying childbirth is the cause of the emancipation of women and whether the decision of delaying childbirth is affected by low knowledge of risks associated with late childbirths (for both mother and child). The work consists of two parts - theoretical and practical. The theoretical part consists of three parts and each of them is related to one objective. The first part is dedicated to changes during pregnancy and pregnancy of old primigravidae. The second part analyses family policy in the Czech Republic and the third part describes status of women in the Czech Republic. The research part is implemented in the Highlands region and in Prague, these two parts has been compared. As a research method I have chosen quantitative method of anonymous questionnaire. The...
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Communication activities of the film festival Febiofest in 2012-2013
Svobodová, Anežka ; Halada, Jan (advisor) ; Orban, Karol (referee)
The aim of this thesis is description and evaluation of communication activities of film festival Febiofest in years 2012-2013. This thesis includes information on the background of the whole festival, the Febio company and its director, Fero Fenič. Theoretical part focuses on the term marketing communication and marketing mix 4P. This is followed by definition of marketing communication in culture field and especially in the connection with film festival. Next part is focused on introduction of festivals communication activities and its market position. This part also includes view of the brand and its perception. There are also identified main competitors of this festival. The practical part is completed with evaluation of communication activities in years 2012 and 2013, focusing on trailers and posters. Thesis is finished with a few recommendations for festival communication. The ideas are based on detected information and could lead to increase of attendance and awarness of festival.
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Reportér - new magazine in the era of media convergence
Svobodová, Anežka ; Jirků, Jan (advisor) ; Osvaldová, Barbora (referee)
The era of media convergence brings new challenges for traditional media. Print magazines don't want to lose their readers, who are moving towards on-line media. The readership of print media is decreasing. Through internet, people gained access to information and therefore they push media to publish news as soon as possible. The emphasis on speed and effectivity is in conflict with presenting only information that have been doublechecked. This thesis is focused on analysing new Czech magazine Reportér, that was launched in year 2014. The magazine presents slow-journalism trend and offers timeless reading. It's the first magazine with this concept on Czech market. Every month it brings readers reportages from business, culture or society. Reportér magazine has also an on-line version. It includes all issues of the magazine that have ever been published, as well, as special stories that are only on-line. For this thesis, a research have been provided. Its goal was to find out whether are people interested in subscribing for digital archive of some print media and what is their attitude towards new media. The research have shown that people mostly use on-line news websites as sources. They are not interested in purchasing digital form of print media.
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