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Intake vortex modeling
Galuška, Jiří ; Kozák, Jiří (referee) ; Rudolf, Pavel (advisor)
This paper covers information research of basic design rules of industrial wet sumps. It describes mathematical models of vortices and method for their identification and visualization. Then the author focuses on CFD modeling of surface vortices with single phase and multiphase approach with Volume of Fluid method. Basic principles of multiphase CFD modelling in OpenFOAM and ANSYS Fluent are given. Description and benchmarking of suitable turbulence models is also present. The single phase and multiphase approach were successfully validated for a simple test case of bathtub surface vortex. Satisfactory agreement with experimental data was achieved. The accuracy and behavior of both solvers were compared between each other. This gives us useful tool for evaluation of inflow condition and danger of surface vortex occurrence in wet sumps. The acquired knowledges were used to design an experimental test case with geometry similar to industrial wet sump. A map of surface vortex occurrence has been created for different operating points. One of the operating point has been used for numerical simulation (both single phase and multiphase). Partial agreement with experimental observation has been achieved.
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Maximum attainable efficiencies of one-stage volute pumps
Galuška, Jiří ; Fic, Miloslav (referee) ; Rudolf, Pavel (advisor)
The bachelor’s thesis deals with European Commission Regulation EUROPUMP for minimun allowable efficiency of the one stage volute pumps. Thesis deals with definition, time table and criteria for measurement these pumps. Further thesis deals with total efficiency of the pipe system in relation to pump efficiency. Follow example of a calculation of the one stage volute pump.
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Insurance fraud
Nguyenová, Nhan ; Galuška, Jiří (advisor) ; Daňhel, Jaroslav (referee)
The bachelor thesis focuses on the issue of insurance fraud whose number has recently increased. Insurance frauds mainly appear in non-life insurance. The thesis describes the elements of insurance frauds and mentions them in various insurance areas in the 3 most important companies in the Czech Republic. The work contains a detailed analysis of these insurance companies and areas where insurance frauds cause the greatest damage. I also proposed preventive measures and provide a comparison of the current situation of the insurance companies with last year. The aim of my work is to define insurance frauds as a problem weighing our company at present to analyze in detail the problems of insurance companies and to analyze the area of the most frequent occurrences of fraud and to mention preventive measures.
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Analysis of management of the insurance company UNIQA a. s.
Skuratova, Yulia ; Galuška, Jiří (advisor) ; Daňhel, Jaroslav (referee)
This bachelor thesis deals with the financial analysis of the insurance company UNIQA a. s. during the period 2008-2015. The first and the second part of the thesis deal with the theoretical basis for financial analysis of business entities and mention the specifics of the management of commercial insurance companies. The third part characterizes the chosen insurance company and the financial analysis on the basis of common ratios and indicators specially adapted for financial analysis of insurance companies is included in the part. The last part of the thesis is focused on the comparison of the development of individual financial indicators to another equally large insurance company and to the whole insurance market.
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Financing of small and medium-sized enterprises
Zhuravleva, Iana ; Rajl, Jiří (advisor) ; Galuška, Jiří (referee)
The subject of this bachelor thesis is the financing of small and medium-sized enterprises focusing on issues of financial management of entrepreneurial subjects and identification of business risks related to financial management. The work contains theoretical and practical parts. The theoretical part is comprised of three chapters and is aimed at deepening the theme of small and medium-sized enterprises financing and linking the topic with the concept of risk. The practical part deals with the analysis of business risks of a selected company and the design of recommendations for its reduction.
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Price comparison websites in insurance
Šľachtová, Petra ; Ducháčková, Eva (advisor) ; Galuška, Jiří (referee)
The aim of my Bachalor thesis is to analyze and assess the role of online comparison websites in the field of insurance on Czech and Slovak market. In the first chapter I focus on distribution of insurace products and I describe direct and indirect distribution channels. In the second chapter I characterize online comparison websites and their advantages and disadvantages. I examine the offer of chosen websites functioning on Czech and Slovak insurance market. By using my own questionare I study how often and why people use online comparison websites. In the last chapter I look at the possible impact of comparison websites on the insurance market. I base this mostly on experiences from the Great Britan where online comparison websites have been big player for a while. In the end of my thesis I explore how comparison websites might envolve in the future and how they can with other technological start-ups influence distribution of insurance products.
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Vývoj cen nemovitostí v Londýně
Svoboda, David ; Cibulka, Jakub (advisor) ; Galuška, Jiří (referee)
The subject of this bachelor thesis is to analyze London residential housing market in the period of time from 1995 to 2016. In the first part of the thesis the emphasis is put on the definition of theories related to the topic. It includes the reasons why house prices are worth measuring. Another point of the theory are the economic fundaments which influence the house prices. The main topic and result of this bachelor thesis is a deep analysis of the development of house prices in London. Based on the analysis, in the conclusion, it is enabled to evaluate the stability of the market. It is particularly the problematics of high house prices and affordabulity, which is solved in this document. These topics have become increasingly popular in London, recently. The work concentrates data from many fields, which affect developments housing markets, in one document. Thanks to it, the work provides comprehensibly processed data from statistical authorities such as HM Land Registry or Office for National Statistics including useful comparisons of important fundamentals.
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Analysis and Influences of Fundamental news on Gold Prices
Kubaštová, Magdaléna ; Fičura, Milan (advisor) ; Galuška, Jiří (referee)
This master thesis, Analysis and Influences of Fundamental news on Gold Prices deals with macroeconomic variables that drive the price of gold. This paper is divided into three chapters: Possible investment forms in gold, Fundamental analysis of commodities, and lastly Analysis of impact of strong economies and their influence on gold prices. In the first chapter, emphasis is put on the Efficient Market Theory that plays an important role in success or failure of investment strategies such as technical and fundamental analysis. The second chapter illustrates the Commitment of Traders (COT) report and how it is used as a tool to predict the movement of gold prices. This chapter also discusses other large drivers effecting gold prices such as financial and geopolitical stability, inflation, interest rates, Central Banking operations, the value of the US dollar, and other influences. The final chapter analyzes the impact of announced fundamental news in the United States, China, and Europe on the price of gold. The empirical part of this paper analysis the impact of announced fundamental news in United States, China and Europe on gold prices. With the use of the linear regression method, we can test whether the macroeconomic variables significantly influence the return on gold investments immediately after their announcement, or over long periods of time. If this new public data was calculated into gold prices directly, investors would not be able to achieve additional returns by using fundamental analysis. The major findings are summed up at the end of the last chapter.
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Intake vortex modeling
Galuška, Jiří ; Kozák, Jiří (referee) ; Rudolf, Pavel (advisor)
This paper covers information research of basic design rules of industrial wet sumps. It describes mathematical models of vortices and method for their identification and visualization. Then the author focuses on CFD modeling of surface vortices with single phase and multiphase approach with Volume of Fluid method. Basic principles of multiphase CFD modelling in OpenFOAM and ANSYS Fluent are given. Description and benchmarking of suitable turbulence models is also present. The single phase and multiphase approach were successfully validated for a simple test case of bathtub surface vortex. Satisfactory agreement with experimental data was achieved. The accuracy and behavior of both solvers were compared between each other. This gives us useful tool for evaluation of inflow condition and danger of surface vortex occurrence in wet sumps. The acquired knowledges were used to design an experimental test case with geometry similar to industrial wet sump. A map of surface vortex occurrence has been created for different operating points. One of the operating point has been used for numerical simulation (both single phase and multiphase). Partial agreement with experimental observation has been achieved.
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Regulation of Derivatives Contracts
Růžek, Lukáš ; Husták, Zdeněk (advisor) ; Galuška, Jiří (referee)
This diploma thesis deals with the legal regulation of derivatives contracts with respect to their economic nature. It provides a detailed view on the legislation regulating derivatives contracts in the legal order of the Czech Republic. Considering the interconnection of local derivatives markets, this diploma thesis pays attention to the legal regulation and standardization of derivatives contracts in foreign countries and at the international level. The first part of this thesis describes basic features of derivatives and proposes their typology. The aim of the following part is to evaluate the contemporary legal regulation of derivatives contracts in the Czech Republic. The rest of this thesis elaborates on foreign and international legal regulation of derivatives contracts. The main goal of this diploma thesis is to evaluate present the state of the regulation of derivatives contracts in the Czech Republic, asses to what degree it reflects their economic nature, and eventually, propose legal changes.
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