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Implementation of wavelet transform in C++
Valouch, Lukáš ; Hasmanda, Martin (referee) ; Beneš, Radek (advisor)
The aim of this thesis is implementation of wavelet transform algorithm for noise reduction. The noise reduction itself is focused on improving informative capabilities of sonographic (ultrasound) images in medicine. For this purpose, thresholding of detailed coefficients on individual levels of multiresolution analysis was used. Common procedures were not used for searching for the most suitable thresholds of those levels. The alternative concept's design is based on fundamental empirical approach, where the individual thresholds are optimised by evolution algorithms. However, with this algorithmic procedure, more problems manifest regarding the objective evaluation of the success of noise reduction. Because of this, the program uses commonly used parameters such as mean square error of the whole image, linear slope edge approximation, relative contrast of two differently bright and distinct points and the standard deviation of compact surface. Described theoretical knowledge is used in developed application DTWT. It executes multilevel decomposition and reversed reconstruction by discrete time wavelet transform, thresholding of detailed coefficients and final evaluation of performed noise reduction. The developed tool can be used separately to reduce noise. For our purposes, it has been modified in way, that it executed through the component for evolutionary optimization of parameters (Optimize Parameters) in created scenario in RapidMiner program. In the optimization process, this component used evaluation received from DTWT program as fitness function. Optimal thresholds were sought separately for three wavelet families - Daubeschies, Symmlets and Coiflets. The evolution algorithm chose soft threshold for all three wavelet families. In comparison to hard threshold, it is more suitable for noise reduction, but it has tendencies to blur the edges more. The devised method had in most cases greater evaluated success of noise reduction with wavelet transform with threshold search done by evolution algorithms, than commonly used filters. In visual comparison however the wavelet transform introduced some minor depreciating artefacts into the image. It is always about compromise between noise reduction and maximal preservation of image information. Objectively evaluating this dilemma is not easy and is always dependant on subjective viewpoint which in case of sonographic images is that of the attending physician.
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The credit risk management in the Czech banks
Čedíková, Gabriela ; Půlpánová, Stanislava (advisor) ; Zetek, Pavel (referee)
Subject of my thesis is a credit risk in the czech banking environment. It consists of five chapters. First one contains description of basic risks banks are exposed to. The next one addresses the credit risk itself and its management, including determination of credit policy and the process of credit granting. Related to this topic is hedging, in broader sense also including provisioning and reserves creation. Third chapter is about credit derivatives, via which the credit risk can be reduced. Closely related to this topic is a securitisation process and it's products. Fourth chapter deals with regulation, which is an essential part of the banking sector nowadays. I focus primarily on Basel II and its credit risk part. In the final chapter I describe credit risk management of one of the biggest czech banks, Ceska sporitelna, which granted most credits in 2010.
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Application of excise tax on beer Staropramen Brewery, Inc.
Hejduková, Jitka ; Svátková, Slavomíra (advisor) ; Klazar, Stanislav (referee)
EMCS is an electronic systém which was introduced in the European Union to prevent tax evasion in the transportation of selected products under a conditional exemption. This new system is fully established as yet in practice in the transportation of selected products, and all taxpayers are obliged to deal with this. The work is in its first part focuses on the description of the system and the basic phenomena of transport related products selected. The second part examines the implementation of EMCS in practice and the various functions of the EMCS. The aim is to find out what advantages and disadvantages brought a new electronic system for monitoring and control of shipments of such products for a specific company that operates the transport of selected products.
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CONTEMPORARY PRACTICE IN DISPOSE OF BIODEGRADABLE WASTE
Šmejkalová, Zuzana ; Geuss, Erik (advisor) ; Havránková, Věra (referee)
This diploma paper deals with contemporary practice in dispose of biodegradable waste, especially biodegradable communal waste (biowaste) in the Czech Republic. It explains fundamental terms, points out relevant legal rules and describes methods of biowaste handling. It evaluates collection and utilization systems in two cities in the way of comparison method. It compares them from cost and benefits (economic, environmental) points of view. The main purpose of the diploma paper is general introduction into the issue, pointing out negative effect of biowaste landfilling and presentation of actual systems of utilization. Also the work points out contemporary trend consisting in raising separation and reducing biodegradable communal waste landfilling.
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The way to maintain the leading position of company RWE on the market of natural gas in the Czech Republic
Kvapil, Jaroslav ; Vávra, Oldřich (advisor) ; Vokřál, Pavel (referee)
The thesis deals with the position of company RWE on the market of natural gas as a method used for heating in the Czech Republic and the marketing tools which will help to maintain this position. For this purpose the analysis of natural gas market in the Czech Republic is made as a part of the marketing plan followed by suggested steps that should prevent the household customers from leaving. Alternative ways of heating are also covered briefly, and some of them are advised to be focused on by RWE in future. The goal of the thesis is to propose a solution which would inspire the marketing team of RWE in their own marketing planning.
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Quantitative easing of Federal Reserve System and its effect on US economy
Táborský, František ; Mandel, Martin (advisor) ; Dvořák, Pavel (referee)
Presented thesis describes unconventional instrument of monetary policy quantitative easing of liquidity by increasing reserves of commercial banks held at the central bank accounts. This instrument was implemented during the greatest economic crisis since the 1930s by all the major monetary authorities to reduce real interest rate at the time of depleted standard monetary policy tools. Thesis deals with the transmission channels, historical and present experience and process of quantitative easing in the US. The potential threats associated with the massive release of liquidity to the market at a time of economic and financial crisis, the right strategy and the timing of exit and subsequent normalization of monetary policy are also discussed. Using correlation analysis relationships between the total volume of reserves and other financial indicators are identified. Most of the anticipated relationships has been confirmed, only their strength may not correspond with notion of central bankers when this instrument are implemented.
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Legal regulation of the renewable energy resources
Krupičková, Andrea ; Žákovská, Karolina (advisor) ; Damohorský, Milan (referee)
With the adoption of the Act on Promotion of Use of Renewable Energy Resources in 2005, the Czech Republic took a significant step forward to examine the economic field of energy in general in light of environmental and climate protection. With this act, the Czech Republic followed the example of other European Union member states in asserting the goal of reducing greenhouse gas emissions and seeking alternative energy resources in the spirit of the Kyoto Protocol obligations. The goal of this Master's thesis is to present and logically analyze the relevant legal legislation concerning renewable resources passed in the Czech law. The emphasis of this analysis of the Act No. 180/2005 Sb. on the Promotion of the Use of Renewable Energy Resources in the context of energy law, whereby the attention is placed on promotion of energy production, those in the Czech Republic represent two alternative schemes: "feed-in tariff" and "green bonus certificates." With the broad definition of renewable energy resources in the introduction, this thesis comprises a basic overview of this comprehensive legal problem. This thesis consists of five separate chapters, which are closely related.
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Transmission and detection of the crayfish plague pathogen under experimental conditions
Svoboda, Jiří ; Petrusek, Adam (advisor) ; Fiala, Ivan (referee)
The crayfish plague pathogen, Aphanomyces astaci, is one of the most serious threats to European indigenous crayfish species, e.g., the noble crayfish (Astacus astacus). The only way to protect susceptible crayfish species from the disease is to prevent the dispersion of the pathogen to their populations. One of the most important sources of the crayfish plague pathogen in Central Europe is the spiny-cheek crayfish (Orconectes limosus), a species of North American origin, which can carry the parasite in its cuticle for years. Some literature sources claimed that the pathogen dispersion from the American vectors is restricted to periods of moulting or to the time before and after the crayfish death. However, experimental evidence for such hypotheses was lacking. The main aim of my thesis was to test these predictions, and the alternative scenario that the crayfish plague pathogen can be transmitted from the infected spiny-cheek crayfish also in other periods. For this purpose, experiments were set up to investigate A. astaci transmission from infected spiny-cheek crayfish to non-infected spiny-cheek or noble crayfish. As expected, the pathogen was transmitted to noble crayfish much more easily than to the uninfected American host. Nevertheless, we succeeded in the pathogen transmission also among spiny-cheek...
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Facebook
Jůnová, Jana ; Švelch, Jaroslav (advisor) ; Vochocová, Lenka (referee)
The theme of this thesis is to assess the behavior while using the public communication network Facebook. The number of users of social networks increases, as well as number of photographs, videos and other input that is stored on the Internet. Particularly, young people try to maintain or further develop their contacts by this way. Perhaps it is a new type of social convergence, which is more or less based on voyeurism, or just an expression of self- realization. In any case this behavior impacts shaping the social relationships of networking users and their free time in a real life. Through a research of Facebook users, this work is looking for uncovering the thinking process of people when publishing private matters via the Internet. Its main goal is to explore the usage of Facebook, depending on the knowledge of its surround. First of all, it is interested in users' network settings experience. Because the adjustment of Privacy Policy may prevent risk of misuse of the social networking, which may lead to disruption of the privacy of all users involved. The main question of the thesis is to what extent the users are aware of the interaction of the environment that is "watching" them. Basicly, when talking about this topic, the most important question is notifying the process of blurring the...
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Experience of the Czech Republic population with sexually aggresive behaviour
Krulová, Tatiana ; Weiss, Petr (advisor) ; Čírtková, Ludmila (referee) ; Zvěřina, Jaroslav (referee)
Presented paper deals with the topic of victimologic aspects of sexual aggression. Description in details is the precondition for effective prevention and healing of victims suffered with outcomes of such offence. Objective of the research: The research was aimed into detection of prevalence of sexual victimization of men and women in general population, prevalence of negative consquences of sexual victimization on psyche of victims, description of differences between respondents having experienced sexual aggression and those who did not declare such experience, and also keeping in touch in the field of victimology in the Czech Republic in the course of the last 15 years. Method of the research: From the point of the nature of the research, it was a quantitative research project. This research was a part of longitudinal research of sexual behaviour and attitudes of the czech inhabitants in 1993, 1998, 2003 and 2008. The theme of sexual victimisation is one of the domains studied in this research. Our findings were obtained in the course of October, November and December 2008. Respondents answered anonymous questionaire targeted at their sexual behaviour. Statistical analysis used the program SPSS (Statistical package of social science). The difference between the two followed samples were submitted...
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