|
|
A comment on the flat plate leading edge shape on laminar-turbulent transition
Antoš, Pavel ; Jonáš, Pavel ; Procházka, Pavel P.
Laminar-turbulent transition region is investigated in zero pressure gradient boundary layers developing on flat plates with different shapes of leading edges namely with the elliptical profile; the superelliptical one and with the thin circle profile. The mean flow field characteristics are presented and discussed. Near downstream from the leading edge are mean velocity profiles very similar to the Blasius solution in all compared configurations. The dramatic effect of the leading edge is ascertained in the beginning of the skin friction coefficient deflection from the course after Blasius solution. The start of deflection is moving downstream in sequence: elliptic – super-elliptic – circle shape. The length of the transitional region shortens in the opposed sequence.
|
|
|
Stereoscopic PIV measurement of boundary layer affected by DBD actuator
Procházka, Pavel P. ; Uruba, Václav
The effect of ionic wind generated by plasma actuator on developed boundary layer inside a narrow channel was investigated recently. Since the main investigated plane was parallel to the channel axis, the description of flow field was not evaluated credibly. This paper is dealing with cross-section planes downstream the actuator measured via 3D time-resolved PIV. The actuator position is in spanwise or in streamwise orientation so that ionic wind is blown in the same direction as the main flow or in opposite direction or perpendicularly. The interaction between boundary layer and ionic wind is evaluated for three different velocities of main flow and several parameters of plasma actuation (steady and unsteady regime, frequency etc.). Statistical properties of the flow are shown as well as dynamical behaviour of arising longitudinal vortices are discussed via phase-locked measurement and decomposition method.
|
|
|
Analysis of the Mobile Market in the Czech Republic since 1989
Valta, Michal ; Štípek, Vladimír (advisor) ; Procházka, Pavel (referee)
The theme of bachelor thesis is an analysis of the mobile market in the Czech Republic since 1989, focusing on the current market structure and problems of transition operators on a new type of data transmission in the LTE (Long Term Evolution) network. The theoretical part focuses on the creation, development and regulation of the market. There were used applications of known economic theories of oligopoly, competition, and also regulation or liberalization, which deal with the topic. There will also be explained and characterized the basic concepts and legislative changes pertaining to the field of telecommunications, including the functions and powers of the Czech Telecommunication Office. The practical part is based on international studies and experience with similar frequency spectrum auctions in the countries of Western Europe, which are then applied to tender in the Czech mobile marketplace. In the final passage presents several different theories of possible future developments in this market, with regard to the outcome of the auction and forthcoming legislative changes.
|
|
|
Political business cycle in the USA, Germany and the UK
Štěpanovský, Martin ; Ševčíková, Michaela (advisor) ; Procházka, Pavel (referee)
This thesis analyses the influence of political decision-making and electoral cycles on three selected national economies -- the UK, the USA and Germany between 2003 and 2013. GDP growth rate, unemployment, inflation, compound tax quota, deficits, average and minimal wages and main bourse indexes are used in this work to find out if politicians are manipulating with economy to be reelected. Proof of the existence of the political business cycle in developed democratic countries is more then unclear.
|
|
|
Poverty and Economic Development of African Countries
Pichrt, Lukáš ; Kotýnková, Magdalena (advisor) ; Procházka, Pavel (referee)
The aim of this thesis is to analyze the economic development of selected African economies, analyze the sources of their economic growth, identify the factors which may limit their economic development and assess the evolution of poverty and human development in these countries. Theoretical part focuses on the definition of the phenomenon of economic development, selected theories and finally defines the factors affecting the economic development of the country. The practical part analyzes the economic development of the African continent as a whole, and then analyzes the economic development of selected countries: Rwanda, Ghana and Tanzania. The key factors of the economic development of these countries can be considered: fundamental institutional reforms and political and macroeconomic stability. On the other hand, limiting factors can be considered underdeveloped infrastructure, bureaucracy or persistent low productivity in agriculture and industry. The analysis also shows that economic development in selected countries is connected to the improvement of indicators of human development and reduction of poverty of population in these countries.
|
|
|
Does development aid harm?
Hanáková, Eva ; Vostrovská, Zdenka (advisor) ; Procházka, Pavel (referee)
A model of development aid, which has been known for more than 50 years is clearly ineffective in Sub-Saharan Africa. This is because such assistance demonstrably negatively affects local governments and strongly contributes to the proliferation of corruption and deterioration of the elements od democracy. The theory of the vicious circle of poverty as one of the main arguments of the proponents of this aid is refuted in the thesis and replaced by the theory of the vicious circle of political instability, which is associated with that governments and their policies. It is necessary tu support a citizens' initiative, which will seek the establishment of democratic institutions, not governments, which are responsible for poverty of their country. Development aid is not the only thing that harms poor countries. Less visible, but with a strong negative effect there are protectionist measures in the form of non-tariff barriers, the Common Agricultural Policy of the EU and its export subsidies, or debt relief of bad governemtns. The failure of these policies are so fundamental that the best advice would probably be to end the government subsidies for poor countries and a focus on small development projects helping specific people, instead of grand plans and aid volumes sounding into space.
|
|
|
Job satifaction of primary school teachers
Žežulka, Jiří ; Procházka, Pavel (advisor) ; Vašenda, Jan (referee)
This bachelor thesis explore the job satisfaction of elemetary schools teachers. The theoretical part is a summary of information about motivation, job satisfaction and the factors that determine these areas. The practical part deals with the satisfaction of teachers in the working environment, working with children and parents, relationships with colleagues and school management, salaries, benefits and overall satisfaction of teachers. Satisfaction of teachers is investigated by questionnaire survey. At the end of this work are presented proposals that could improve problem areas in education.
|
|
|
The analysis of integration of foreigners in the Czech Republic
Knížová, Pavla ; Vostrovská, Zdenka (advisor) ; Procházka, Pavel (referee)
This thesis describes the integration policy of the Czech Republic. The aim is to analyze the integration policy of the Czech Republic targeting on specific integration programs. After the basic theoretical background of migration, integration and integration policies work has been dealing with a specific integration policy of the Czech Republic. Follow the analysis of the selected integration programs, which take place in the capital city of Prague and Středočeský region. Based on the findings of work validates the hypothesis that the integration policy of the Czech Republic in need of radical change. To this end the work used statistical methods, method comparison, and especially SWOT analysis.
|
|
|
Fate of privatized enterprises in the 1. wave of voucher privatization
Hlaváček, Jiří ; Ježek, Tomáš (advisor) ; Procházka, Pavel (referee)
This diploma thesis is aimed to map the development of the companies that have passed the first wave of voucher privatization from 1991 until 2013. Development of 988 companies has not been yet comprehensively examined. The aim is to determine the ownership structure, including the ability to find majority shareholders. The second part is focused on how many companies has been closed over the past twenty years and method of liquidation. Another finding is that two-fifths of companies have changed the form of shares to the documentary. Finally, the research focuses on delisting of shares from czech capital market. The last part is based on comparison of results of the two waves of voucher privatization and the main findings are very similar.
|
|
|
The comparsion of the bariers to entry of the Czech Republic and the United States
Fialová, Tereza ; Vostrovská, Zdenka (advisor) ; Procházka, Pavel (referee)
The goal of the bachelor thesis is the comparison of the main barriers to entry and the overall complexity of setting up a business in the Czech Republic and the United States of America. In the first part there are introduced the various types of business entity with their advantages and disadvantages. Next section presents the necessary administrative procedures and costs of starting a business. It is followed by a comparison of income taxation of natural person and legal entity, labor cost and supporting programs for entrepreneurs accessing to the market. Based on unfavourable findings of the current situation in the Czech Republic, recommendations are enclosed to assimilate the Czech Republic to the United States of America.
|
guest ::
RSS feed.