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On the analysis of thin-wall parts sawing
Spáčil, Radek ; Dvořáková, Jana (referee) ; Píška, Miroslav (advisor)
Master‘s thesis deals with sawing of the thin-walled parts with high speed steel slitting saw. At first the most used conventional and unconventional possibilities of materiál cutting are described by a form of search. The next chapter describes forces arising from splitting saw machining, including their dependence on a specific cutting force, a chip cross section and a engagement angle. The second part of the thesis deals with the technological improvement of the cutting process, where three possible solutions are considered – geometry of the cutting tool, PVD coating deposition of the cutting tool and process fluid change. In the experimental part non coated slitting saw with burrs, non coated deburred slitting saw and coated slitting saws are compared. Used coatings were Ti(C,N), Cr-Al-Si-N, Al-Cr-B-N, and TripleCoating Cr, which is consisting of three layers TiN + (Al,Ti)N + Cr-Al-Si-N. The experiment has shown that the cutting forces inceases as the edge radius and wear level of the cutting tool increases. Coated cuttung tools has shown lower differences between the first and the last cut. Slitting saws have been also used in real cutting process to verify experimental results.
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A technological preparation of the wiping plate production
Balhar, David ; Dvořáková, Jana (referee) ; Píška, Miroslav (advisor)
The main aim of this master's thesis is to propose a technological preparation of the wiping plate production. Elaboration is divided into four chapters. The first chapter describes forming tool (function and construction). In the second chapter is technologies overview, which are used for the wiping plate production. The most important is the third chapter, because it deals with the main output, and the actual proposal of technological preparation of the production. In the fourth chapter, production is reviewed economically.
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The de minimis regime and financing of Czech theatres
Jonášová, Helena ; DVOŘÁKOVÁ, Jana (advisor) ; SOUČKOVÁ, Jaroslava (referee)
This diploma master thesis focuses on the de minimis regime and its application within financing of theatres in the Czech Republic. The de minimis regime is one of the instruments of finance regulations of finance from public budgets, in relations to enterprises in the Czech Republic. As it is an instrument of so-called state aid with considerable selective features, is it a subject of thorough regulations by the European Union. These regulations thus directly affect legal systems of member countries of the EU.
The aim of the master thesis is to describe how the de minimis regime affects the opportunities of Czech theatres to receive financial support from public budgets and to find out how the legal acts of the European Union affect the financial situation of these theatres. The thesis also deals with the problem as seen from the point of view of providers of these financial supports so that it could be possible to reflect the issue as a whole.
The theoretical background of the thesis is formed by the relevant legal acts, issued by the European Commission and by the commentaries made about them. An inseparable part of this work is also grant calls of individual grant providers in the Czech Republic. The practical part of the master thesis is then based on thorough research of all Czech theatres with regards to their relations to de minimis issues. The master thesis also works with data provided by the Czech Register of the de minimis regime.
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Defence mechanisms of phytoplankton exposed to UV radiation
Dvořáková, Jana ; Němcová, Yvonne (advisor) ; Pichrtová, Martina (referee)
Phytoplankton builds an important part of energy flow in the Earth's ecosystem. It forms the basis of the food chain and represents main primary producers. The question arises, due to the continuing ozone depletion, what impact may cause the increasing intensity of UV radiation on aquatic ecosystems. Especially UV-B radiation is capable of penetrating depp into the water column and affects the key physiological processes (e.g. growth, reproduction) and causes acute physiological stress to aquatic organisms including phytoplankton. The gole of my thesis is to summarize the studies focused on the impact of UV radiation on planktonic algae and the defense mechanisms that reduce the negative effects of UV radiation. These mechanisms may be devided into three groups: active avoidance, production of UV-absorbing substances and repairs of damage induced by UV radiation. Powered by TCPDF (www.tcpdf.org)
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Czech Jewish Community at the beginning of the 21st century
Dvořáková, Jana ; Hošek, Pavel (advisor) ; Weiniger, Ruth Jochanan (referee)
The dissertation, entitled Czech Jewish Community at the Beginning of the 21st Century, captures the religious, cultural and social life of the Czech Jewish community from the year 1989 to the present day. It discusses the renewal of religious activity in individual communities following the collapse of the totalitarian regime as well as the most important institutions, societies and activities which emerged in the Czech Republic after the so called Velvet Revolution, which play a major role in the preservation of Jewish historic monuments and cultural heritage, keep the majority society informed, and have an impact on its social and cultural life. The work further looks at important attributes of Judaism as they manifest themselves in the Czech Republic nowadays, among them provision of social care to the members of the Jewish community, maintained Jewish customs and traditions, ritual bath - mikveh - and kosher dining. In addition, this part includes information on the Jewish education system and education possibilities available in the field of Judaism. A separate chapter deals with Jewish rituals that accompany members of the community on their life journey from birth to death in the Czech environment of the present day, thus completing the picture of the Bohemian and Moravian Jewish community...
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Justinian the Great and Art of His Age
Dvořáková, Jana ; Veverková, Kamila (advisor) ; Lášek, Jan Blahoslav (referee)
The work deals with the life, reign of Emperor Justinian I. He also changes that during his government has made this emperor. It mentions Justin's and Justinian's journey for a new job in the city of Constantinopole and where Justin managed to become from an uneducated military commander to an emperor. Justinian's path to power and achievement of a good education in contrast was simpler. Slowly, Justinian's personal and imperial life will be discussed as well as his extensive activities in the field of law and certainly it cannot be unmentioned his extensive building activity. It refers to natural disasters and other complications that affected Constantinople during the Emperor's government. Justitian is known for extensive bulding activity on which can be seen the evolution of Byzantine art. Whether it is a mosaic, specific type of architecture or iconic art. Therefore, furthermore work devoted to Byzantine Art that just for that era achieves its heyday. The aim is to familiarize the reader with the life and work of the Emperor Justinian I, as well as art that in Justinian's era reached its golden age. As the evidence one cannot omit not to mention the famous Hagia Sophia of Constantinople. Powered by TCPDF (www.tcpdf.org)
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Newborn screening and further care of a child with hearing disability and its family - description of current situation in the Czech Republic
Dvořáková, Jana ; Hudáková, Andrea (advisor) ; Okrouhlíková, Lenka (referee)
The aim of this thesis is to describe the institutional mechanism by which parents whose children were by neonatal screening suspected as a hearing impaired are currently experiencing. The theoretical part focuses on neonatal hearing screening, its appearance in the Czech Republic and abroad, its history, legislative etc. There are also described possible ways of follow-up care for a child with hearing impairment in the Czech Republic. The practical part is based on interviews with medical staff who performs neonatal hearing screening and mothers of hearing impaired children. The aim was to see how, in practice, works neonatal hearing screening, and also the experiences of parents of hearing impaired children with screening and the care for their child that came after. Key words neonatal hearing screening, child with hearing impairment, audiometry, otoacoustic emissions, early care, family
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