The goal of my thesis is to verify the weak form of the efficiency of the exchange market. The paper results from the presumptions for efficient price movements on the financial markets. They are applied to the time series of exchange rates of five currency pairs. After definitions of testing methodology, the given exchange rates series are analysed with the help of correlation and autocorrelation test, runs test and a test based on technical analysis. The conclusion of the thesis anwers the question if the exchange rates movements are suitable with the efficient market hypothesis.

The paper deals with the current perspective of computer aided assessment of students, particularly with computer adaptive testing based on Item Response Theory. Although this testing method has become a world standard, in the Czech Republic it is still, unfortunately, rarely used. The aim of this paper is to describe the current state of the testing techniques used and to create a functional dll library, which will provide basic functionality needed for successful launching of a Web interface for computer adaptive testing of students. In addition, the library should serve as a support to authors in developing tests based on Item Response Theory. The first part provides a basic description of educational assessment methods currently used, and gives an insight into the matters of creating professional testing tools. Other chapters depict the operation of Classical Test Theory, which is now used as a cornerstone of the test development, and further it presents Item Response Theory, as a possible successor to the Classical theory. Both theories described are compared at the end. The second part of the paper is then divided into a theoretical part, which describes the possibility of computer adaptive testing, gives and overview of its origins and development, presents essential forms, and highlights the advantages and disadvantages of this testing method. The practical part contains illustrative examples and descriptions of the methods enabled by the presented dll library.

The objective of the thesis is to characterize the importance of information and consequently also of knowledge as the bases for active dealing in the stock market. The fundamental terms of information credibility, disinformation and information asymmetry, which have a cardinal effect on behaviour of particular participants of the market, are mentioned in the thesis. The theory of effective markets and the factors due to which it is not able to explain the development and the real state of the contemporary stock markets, are analysed in more detail in the thesis. A considerable part of the thesis is devoted to the analysis and the definition of information need as a basic requirement for making successful investment decisions of an individual, whereas ways to its fulfilment are implied -- including a description and a division of available information sources. The description and the analysis of several dealing strategies which are directly based on usage of various kinds of information are not missing in the thesis. A part of the work is a presentation and an analysis of the results of a research made among real investors.

The theory of redistribution systems is a practical extension of a game theory, which deals with a redistribution within a social system of more than two players with di?erent performances and ability to create coalitions. This thesis is divided into three chapters. The ?rst chapter describes the known knowledge of a game theory. The second chapter deals with the theory of redistribution systems. Using an elementary redistribution system and its generalization group behaviour when dividing a payment, achieved by a collective performance, is described. This part introduces the extension of the redistribution system to a compound redistribution system with a fractal structure. Furthermore the theory of discriminatory equilibrium and the theory of commonly acceptable equilibrium are veri?ed using the elementary redistribution system and utility theory. The third chapter deals with an application to the allocation of funds among faculty departments. A game theory approach was used to reduce the game to a non-cooperative game of two players by using the forming of coalitions. Also the theory of redistribution systems was applied when a reduction was used to create a non-cooperative two-player game. This reduced non-cooperative game between two players was converted to a cooperative play of more than two players by changing the rules of the game and allowing a formation of coalitions. In the practical part both of these approaches are compared with real data and a current state.

The aim of this thesis is to perform an analysis of capital structure of joint stock companies based in the Czech Republic. The first part of the thesis introduces modern theories and main determinants of capital structure. Further it stakes out basic models used for testing the validity of mentioned theories and the methodology used. The second part of the thesis focuses on practical results of the analysis. The first chapter summarises descriptive analysis of the passive structure, the level of leverage, the composition of equity and liabilities of the joint stock companies. These ratios are judged mainly according to industry classification and the type of ownership. In the next step, the relationship between leverage and profitability is closely explored since it is thought to be one of the main determinants. In the last chapter, the models are applied to the sample of Czech companies with the effort to judge the validity of capital structure theories and to evaluate the effect of determinants on capital structure.

The dissertation called Economic and Psychological Aspects of a Consumer's Behaviour and Decision-Making is dedicated to a consumer's behaviour and decision-making in economic and financial issues from the perspective of classic economy, psychology and behavioural economy. The theoretical part describes the expected utility theory and psychological findings on one hand, and presents the so called Prospect Theory and systematic biases on the other hand. The practical part comprises a research. Mission of the questionnaire survey is to find out whether behaviour and decision-making are rational and correspond with the classic economy theory or whether consumers behave irrationally and verify presumptions of behavioural economy.

The thesis provides a comparison of different portfolio models and tests their performance on the financial markets. Our analysis particularly focuses on comparison of the classical Markowitz modern portfolio theory and the downside risk models of the post-modern portfolio theory. In addition, we consider some alternative portfolio models ending with total eleven models that we test. If the performance of different portfolio models should be evaluated and compared correctly, we must use a measure that is unbiased to any portfolio theory. We suggest solving this issue via a new approach based on the utility theory and utility functions. We introduce the unbiased method for evaluation of the portfolio model performance using the expected utility efficient frontier. We use the asymmetric behavioural utility function to capture the behaviour of the real market investors. The Markowitz model is the leading market practice. We investigate whether there are any circumstances in which some other models might provide better performance than the Markowitz model. Our research is for three reasons unique. First, it provides a comprehensive comparison of broad classes of different portfolio models. Second, we focus on the developed markets in United States and Germany but also on the local emerging markets in Czech Republic and Poland. These local markets have never been tested in such extent before. Third, the empirical testing is based on the broad data set from 2003 to 2012 which enable us to test how different portfolio model perform in different macroeconomic conditions.

Problematika výběru kapitálové struktury byla a stále je často diskutována akademickou obcí již přes půl století a stále ještě nebylo dosaženo jednoznačného souladu, která teorie kapitálu a jaké determinanty ovlivňují kapitálovou strukturu. Modligliani a Miller (1958) zformulovali moderní teorii kapitálové struktury. Tvrdí, že pokud jsou splněny přísné podmínky, kapitálová struktura je irelevantní pro hodnotu společnosti. Avšak pokud nějaké předpoklady nejsou naplněny, kapitálová struktura se stává významná. Nyní, dvě hlavní teorie kapitálové struktury převládají – teorie hierarchického pořádku a trade-off teorie. Teorie hierarchického pořádku je vysvětlena informační asymetrií mezi manažery a ostatními lidmi. Toto způsobuje rozdílné ocenění vydaných cenných papírů danými skupinami lidí. Proto společnosti preferují vydat cenné papíry nejméně citlivé na dostupné informace. Pokud potřebují volné finance, nejdříve použijí vnitřní zdroje, následně dluh a jako poslední možností je vydání nového vlastního kapitálu. Trade-off teorie řeší rovnováhu mezi daňovým štítem dluhu a náklady finanční tísně. Důsledkem tohoto substitučního vztahu je optimální kapitálová struktura, kterou by se společnosti měly snažit získat a dále udržet. Mnoho výzkumu týkající se výběru kapitálové struktury již bylo provedeno a jeho výsledky jsou stále neurčité. Protože mnoho článků stále nabízí bezvýsledné závěry a jejich výsledky se liší v rámci zemí a skrz časové období, cílem mé práce je prozkoumat kapitálovou strukturu a determinanty kapitálové struktury v rámci Višegrádských zemí v období od 2002 do 2007. Hlavním přínosem této práce je prozkoumat data, která ještě nebyla před tím prozkoumána. Důvod, proč tomu tak je, může být obtížnost v získávání a zpracování dat. Již mnoho článků bylo napsáno o kapitálové struktuře, ale mnohé měly nedostatky. První výhodou mé práce je, že zkontroluji veškeré předpoklady mé analýzy. Znázorňuji, že heteroskedasticita a autokorelace jsou občas přítomny a snažím se je odstranit. Tímto se vyhnu zkresleným výsledkům. Další výhodou mého výzkumu je, že používám relativně velké množství vysvětlujících proměnných. Mnozí autoři záměrně vynechávají proměnné jako likvidita, růstové příležitosti nebo volatilitu tržeb (obchodní risk). Navíc používám tři druhy dluhů jako vysvětlované proměnné – celkový, dlouhodobý a krátkodobý, které nejsou také běžně používané. Dále používám dynamický vztah v zadluženosti, jelikož současná zadluženost může záviset na minulosti z důvodu setrvání nebo pouze částečnému přizpůsobení. Schopnost tohoto docílit je unikátní pro panelová data, která používám v této práci. Výsledkem je, že zadluženost má paměť a závisí na zadluženosti z minulých let. Hlavní závěry mohou být rozděleny do dvou skupin. Do první skupiny patří výsledky regrese z České republiky a Polska a druhé z Maďarska a Slovenska. Výsledky z první skupiny ukazují pozitivní vztah mezi zadlužeností českých a maďarských společností a tempem růstu společností a nedaňovým štítem, který je použit jako náhrada za daňový štít. Zatímco ziskovost, likvidita, struktura aktiv, obchodní riziko a velikost firmy je negativně korelována s dluhem. Tyto závěry podporují teorii hierarchického pořádku. Na druhou stranu, výsledky z Maďarska a Slovenska podporují trade-off teorii. V této druhé skupině struktura aktiv, ziskovost, velikost firmy je kladně korelována se zadlužeností, zatímco zbylé proměnné ukazují zápornou korelaci.

This thesis explores the issue of noise in the simultaneous interpreting process, using the concept of noise as defined in information theory and the model of communication developed by Claude Shannon. The theoretical section of this thesis first offers a brief explanation of the basic concepts involved in information theory, followed by a description of Shannon's model. Selected models of interpreting are then introduced based on this model of communication. A list of potential types of noise is then presented based on the literature examined that may have an impact on the interpreter during simultaneous interpreting. The empirical section of this thesis consists of a questionnaire and an experiment. The questionnaire determines to what extent interpreters find the potential types of noise from the list created in the theoretical section disruptive in their work. The list of types of noise is also expanded based on respondents' answers. The questionnaire also determines what strategies respondents employ to overcome adverse factors. The new types of noise and strategies employed are described in this thesis using open-ended answers from the respondents. The experiment tests the impact of a burst-noise channel on simultaneous interpreting. A total of 13 respondents took part in the experiment,...

The F and G formfactors of Kl4 decays are calculated to O(p4 ) in isospin limit in Resummed Chiral Perturbation Theory. Formulae for reparametrization of low-energy constants L1 - L3 in terms of physical observables are derived. They are used to obtain values of these low-energy constants from recent experimental data, theoretical error of the result is estimated and dependence on parameters X, Z of spontaneous symmetry breaking of SU(3) × SU(3) chiral symmetry and quark mass ratio r is investigated. Convergence of the formfactors in Resummed Chiral Perturbation Theory is discussed and it is suggested that inclusion of σ as an explicit degree of freedom into Chiral Perturbation Theory could significantly improve overall covergence of chiral series. 1