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Program pro výpočet provozních parametrů velkých transformátorů
Karban, P. ; Doležel, Ivo
About fifteen years ago Prof. Doležel started developing a relatively large program package for solution of a wide spectrum of tasks associated with operation of large power transformers. The program ordered by one of the principal Czech manufacturers - ŠKODA Plzeň - was written in FORTRAN 77 for environment MS-DOS supplemented with memory extender DBOS and contained the following modules: Solution of 2D magnetic field distribution in the window. It could be calculated either analytically (provided that the window contains no ferromagnetic subdomains such as shunts) or numerically, using the finite element method.
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Reasoning for decisions on mobile application testing
Balák, Martin ; Gála, Libor (advisor) ; Beránek, Marek (referee)
Thesis analyses the problematics of determining both qualitative and quantitative parameters for testing on projects involving development of mobile applications. First, content and scope of testing is fixed, followed by the specification of influence model. Methodology is proposed to ascertain the financial and temporal extent of the testing based on obtained influence model.
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Clustering and regression analysis of micro panel data
Sobíšek, Lukáš ; Pecáková, Iva (advisor) ; Komárek, Arnošt (referee) ; Brabec, Marek (referee)
The main purpose of panel studies is to analyze changes in values of studied variables over time. In micro panel research, a large number of elements are periodically observed within the relatively short time period of just a few years. Moreover, the number of repeated measurements is small. This dissertation deals with contemporary approaches to the regression and the clustering analysis of micro panel data. One of the approaches to the micro panel analysis is to use multivariate statistical models originally designed for crosssectional data and modify them in order to take into account the within-subject correlation. The thesis summarizes available tools for the regression analysis of micro panel data. The known and currently used linear mixed effects models for a normally distributed dependent variable are recapitulated. Besides that, new approaches for analysis of a response variable with other than normal distribution are presented. These approaches include the generalized marginal linear model, the generalized linear mixed effects model and the Bayesian modelling approach. In addition to describing the aforementioned models, the paper also includes a brief overview of their implementation in the R software. The difficulty with the regression models adjusted for micro panel data is the ambiguity of their parameters estimation. This thesis proposes a way to improve the estimations through the cluster analysis. For this reason, the thesis also contains a description of methods of the cluster analysis of micro panel data. Because supply of the methods is limited, the main goal of this paper is to devise its own two-step approach for clustering micro panel data. In the first step, the panel data are transformed into a static form using a set of proposed characteristics of dynamics. These characteristics represent different features of time course of the observed variables. In the second step, the elements are clustered by conventional spatial clustering techniques (agglomerative clustering and the C-means partitioning). The clustering is based on a dissimilarity matrix of the values of clustering variables calculated in the first step. Another goal of this paper is to find out whether the suggested procedure leads to an improvement in quality of the regression models for this type of data. By means of a simulation study, the procedure drafted herein is compared to the procedure applied in the kml package of the R software, as well as to the clustering characteristics proposed by Urso (2004). The simulation study demonstrated better results of the proposed combination of clustering variables as compared to the other combinations currently used. A corresponding script written in the R-language represents another benefit of this paper. It is available on the attached CD and it can be used for analyses of readers own micro panel data.
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Use of Interest Rate Models for Interest Rate Risk Management in the Czech Financial Market Environment
Cíchová Králová, Dana ; Arlt, Josef (advisor) ; Cipra, Tomáš (referee) ; Witzany, Jiří (referee)
The main goal of this thesis is to suggest an appropriate approach to interest rate risk modeling in the Czech financial market environment in various situations. Three distinct periods are analyzed. These periods, which are the period before the global financial crisis, period during the financial crisis and in the aftermath of the global financial crisis and calming subsequent debt crisis in the eurozone, are characterized by different evaluation of liquidity and credit risk, different relationship between financial variables and market participants and different degree of market regulations. Within this goal, an application of the BGM model in the Czech financial market environment is crucial. Use of the BGM model for the purpose of predicting a dynamics of a yield curve is not very common. This is firstly due to the fact that primary use of this model is a valuation of interest rate derivatives while ensuring the absence of arbitrage and secondly its application is relatively difficult. Nevertheless, I apply the BGM model to obtain predictions of the probability distributions of interest rates in the Czech and eurozone market environment, because its complexity, direct modeling of a yield curve based on market rates and especially a possibility of parameter estimation based on current swaptions volatilities quotations may lead to a significant improvement of predictions. This improvement was also confirmed in this thesis. Use of swaptions volatilities market quotations is especially useful in the period of unprecedented mone- tary easing and increased number of central banks and other regulators interventions into financial markets that occur after the financial crisis, because it reflects current market expectations which also include future interventions. As a consequence of underdevelopment of the Czech financial market there are no market quotations of Czech koruna denominated swaptions volatilities. I suggest their approximations based on quotations of euro denominated swaptions volatilities and also using volatilities of koruna and euro forward rates. Use of this approach ensures that predictions of the Czech yield curve dynamics contain current market expectations. To my knowledge, any other author has not presented similar application of the BGM model in the Czech financial market environment. In this thesis I further predict a Czech and Euro area money market yield curve dynamics using the CIR and the GP models as representatives of various types of interest rates models to compare these predictions with BGM predictions. I suggest a comprehensive system of three criteria, based on comparison of predicti- ons with reality, to describe a predictive power of selected models and an appropria- teness of their use in the Czech market environment during different situations in the market. This analysis shows that predictions of the Czech money market yield curve dynamics based on the BGM model demonstrate high predictive power and the best 8 quality in comparison with other models. GP model also produces relatively good qua- lity predictions. Conversely, predictions based on the CIR model as a representative of short rate model family completely failed when describing reality. In a situation when the economy allows negative rates and there is simultaneously a significant likelihood of their implementation, I recommend to obtain predictions of Czech money market yield curve dynamics using GP model which allows existence of negative interest rates. This analysis also contains a statistical test for validating the predictive power of each model and information on other tests. Berkowitz test rejects a hypothesis of accurate predictions for each model. However, this fact is common in real data testing even when using relatively good model. This fact is especially caused by difficult fulfilment of test conditions in real world. To my knowledge, such an analysis of the predictive power of selected interest rate models moreover in the Czech financial market environment has not been published yet. The last goal of this thesis is to suggest an appropriate approach to obtaining pre- dictions of Czech government bonds risk premium dynamics. I define this risk premium as a difference between government bond yields and fixed rate of CZK IRS with the same length. I apply the GP model to describe the dynamics of this indicator of the Czech Republic credit risk. In order to obtain a time series of the risk premium which are necessary for estimation of GP model parameters I firstly estimate yield curves of Czech government bonds using Svensson model for each trading day since 2005. Resulting si- mulations of risk premium show that the GP model predicts the real development of risk premiums of all maturities relatively well. Hence, the proposed approach is suitable for modeling of Czech Republic credit risk based on the use of information extracted from financial markets. I have not registered proposed approach to risk premium modeling moreover in the Czech financial market environment in other publications.
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Building and using small computer networks
Borecký, Jiří ; Pinkas, Otakar (advisor) ; Šmejkal, Ivo (referee)
This thesis deals with the construction and use of smaller computer networks. To build a better and more efficient computer network was used corporate network of parents, which is mainly used for the operation of accounting. The input information was used for generating analysis of the current state of the computer network. Additionally makes a proposal, which leads to improvement of the computer network and then testing whether the proposal was successful.
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The analysis of an impact of realised projects of the OP Prague - the competitiveness of program period 2007-2013
Kellnerová, Markéta ; Wokoun, René (advisor) ; Krejčová, Nikola (referee)
The purpose of this dissertation is to evaluate an impact of realized projects of Prague operating program The competitiveness on a development of the Prague region. Theoretical part is dedicated to formation and development of regional politics, consequent establishment of the EU and its dividing into the program periods including given aims. Subsequently, the dissertation examines the possibilities of using the funds of the EU, after, these possibilities are discussed, specifically for the CZ. Due to the fact, that it is the OP which is referred only to the capital city Prague, one chapter is given to this issue. The last section of the theoretical part is an implementation of the OP. The practical part is concerned about quantitative and financial analysis of the OP, which is divided into the program years. In the end of the practical part, an effect of the OP is totally evaluated, mainly its impact on the development of Prague through horizontal subjects and achieving of set indicators. Finally, the effect on the region of Prague is evaluated, in terms of applicants for funds.
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Analysis of drawing contributions from the Regional Operational Programme in the Košice Region 2007 - 2013
Hupka, Peter ; Kalábová, Markéta (advisor) ; Abrhám, Josef (referee)
Regional policy is becoming one of the strategic priorities of the European Union after its extension. The main tools of the policy are subsidies for less advanced regions in EU. This work aims to evaluate the Regional operational programme in the Košice region during the programming period 2007 to 2013. In the theoretical part author describes the process of forming the European Union, the overall characteristics specified by EU funds and gives basic information on Slovak Republic and Košice Region. The analytical section is dedicated to the characteristics of the Regional operational program. This work compares the individual priority axes of the operational program and the successful utilization of the allocation. For an objective assessment Košice region is compared with other regions of the Slovak Republic at the level of priority axis. Based on the analysis the author reviewed the regional operational programme in the Košice region as successful with space for improvement in the fulfilment of allocations
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Improving logistics operations in the warehouse of Stroj Servis Plus
Feklistov, Maxim ; Vinš, Marek (advisor) ; Mervart, Michal (referee)
This bachelor thesis is focusing on the logistic operations in the warehouse of a particular organization. The objective of the thesis is to analyze logistics operations in the warehouse of Stroj Servis Plus and propose certain measures, based on selected methods, which might lead to improvement in the efficiency of the current logistics operations. This bachelor thesis is divided into two parts. In first part, theoretical part, is describing the basic theoretical concepts and principles, connected with the main field of the interest. The second part, practical part, begins with the introduction of the company Stroj Servis Plus and analyzing of the logistics operations in the warehouse. Based on the facts, discovered in the intercompany documents, own practice in the firm and theoretical knowledge propose solutions that would eliminate any disadvantages and improve logistics operations in warehouse of the selected company.
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Analysis of drawing EU Structural funds in the Czech Republic with a detailed focus on OP PIK
Procházka, David ; Svobodová, Ivana (advisor) ; Schön, Kateřina (referee)
Since the third and possibly the last grant period for the Czech Republic in the framework of drawing the European Funds is underway, it is assumed that businesses successfully and efficiently draw funds with allocated resources for the Czech Republic. Agencies should also help to the effective implementation, however, their activities do not reflect the market and clients requirements properly. To confirm that, the Czech Republic was in previous years, one of the worst states in terms of efficiency of drawing on funds of the EU structural funds, which was caused by an improperly formed grant system by management authorities, as well as misconduct on the part of applicants and potential beneficiaries and agencies with their erroneous philosophies. Author task was to analyse the causes of drawing funds inefficiency with a detailed focus on Operational Programme Enterprise and Innovation and Entreprise and Innovation for Competitiveness used mainly for businesses. Diploma thesis not only analyses the current grant situation in which entrepreneurs can submit their project applications but also proposes possible solutions how to help entrepreneurs in drawing on funds.
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INFLUENCE OF LASER CUTTING AND PUNCHING ON MAGNETIC PROPERTIES\nOF ELECTRICAL STEEL M470-50A
Bulín, Tomáš ; Švábenská, Eva ; Hapla, Miroslav ; Ondrůšek, Č. ; Schneeweiss, Oldřich
Electrical steel M470-50A belongs to the most often used materials in electrical machines. Due to this fact, it is desirable to know the magnetic parameters after processing raw sheets into the required shape. Basic parameters of mechanical, electrical, and magnetic properties of the sheets are usually obtained from the producer but the magnetic properties are changing in dependence on additional machining processes. The aim of this study is to describe changes in parameters of magnetic behavior after punching, laser and spark cutting of the original sheets. The basic information of structure was obtained by optical and scanning electron microscopy. The magnetic parameters were acquired from the measuring of magnetic hysteresis loops in dependence on saturation fields and frequencies. The results are discussed from the point of view of applied\ncutting technology with the aim to obtain the best magnetic parameters and consequently a higher efficiency of the final product. Results can be used as input parameters in simulation of the electrical machine.
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