The aim of this diploma thesis is to evaluate what influence has the ECB decision-making on the Eurozone economy and above all to consider the ECB's involvement in solving of the recent financial and persisting European debt crisis. First two chapters represent rather a theoretical part of the thesis, in which the author is dealing generally with the importance and the role of the ECB in the course of the European integration, including its origin, its management structure and internal decision-making process. The second chapter focuses in detail on the ECB's tasks and competencies with emphasise mainly on the monetary policy and on the clarification how a so called transmission mechanism enables the measures adopted within the monetary policy to transform into the real economy. There is also more elaborated the primary task of ECB which is to maintain the price stability. The second part of this thesis is more analytical and reflects current trends and development in the EU banking sector with an accent on the ECB's attitudes. The recent financial crisis is discussed in the third chapter together with the new regulatory rules. Financial crisis tend to have some joint characteristics like e.g. the source of their origin that often lies in an excessive and rapid loan expansion, in leverage increase,...

L’Europe a subi la crise la plus sévère de sa récente histoire à la suite de la crise financière globale de 2008. C’est pourquoi cette thèse a l’objectif d’identifier de façon empirique les déterminants de cette crise dans le cadre de 15 principaux membres de l’UE. Dans ce sens, nous développons d’abord un index de pression fiscale continu, contrairement aux travaux empiriques précédents, afin d’identifier des périodes de crise dans les pays UE-15 de 2003 à 2015. Ensuite, nous utilisons trois différentes techniques d’estimation, à savoir Cartes auto-organisatrices, Logit et Markov. Nos résultats d’estimation démontrent que notre indicateur de crise identifie le timing et la durée de la crise de dette dans chacun des pays de UE-15. Résultats empiriques indiquent également que l’occurrence de la crise de dette dans l’UE-15 est la conséquence de la détérioration de balances macroéconomiques et financières sachant que les variables comme le ratio des prêts non-performants sur les crédits totaux du secteur bancaire, la croissance du PIB, chômage, balance primaire / PIB, le solde ajusté du cycle PIB. De plus, variables démontrant la qualité de gouvernance tel que participation et responsabilisation, qualité de la réglementation, et de l'efficacité gouvernementale, jouent également un rôle important dans l’occurrence et sur la durée de la crise de dette dans le cadre de l’UE-15. Étant donne que les résultats économétriques indiquent l’importance de la détérioration fiscale dans l’occurrence de la crise de dette européenne, nous testons la convergence fiscale des pays membre de l’UE. Les résultats montrent que Portugal, Irlande, Italie, Grèce et Espagne diverge des autres pays de l’UE-15 en termes de dette publique / PIB alors qu’ils convergent, à part la Grèce, avec les autres pays membres de l’UE-15 en termes de déficit budgétaires / PIB. / Europe went through the most severe economic crisis of its recent history following the global financial crisis of 2008. Hence, this thesis aims to empirically identify the determinants of this crisis within the framework of 15 core EU member countries (EU-15). To do so, the study develops a continuous fiscal stress index, contrary to previous empirical studies that tend to use event-based crisis indicators, which identifies the debt crises in the EU-15 and the study employs three different estimation techniques, namely Self-Organizing Map, Multivariate Logit and Panel Markov Regime Switching models. Our estimation results show first that the study identifies correctly the time and the length of the debt crisis in each EU-15-member country by developing a fiscal stress index. Empirical results also indicate, via three different models, that the debt crisis in the EU-15 is the consequence of deterioration of both financial and macroeconomic variables such as nonperforming loans over total loans, GDP growth, unemployment rates, primary balance over GDP, and cyclically adjusted balance over GDP. Besides, variables measuring governance quality, such as voice and accountability, regulatory quality, and government effectiveness, also play a significant role in the emergence and the duration of the debt crisis in the EU-15. As the econometric results clearly indicate the importance of fiscal deterioration on the occurrence of the European debt crisis, this study also aims to test the fiscal convergence among the EU member countries. The results indicate that Portugal, Ireland, Italy, Greece, and Spain diverge from other EU-15 countries in terms of public debt-to-GDP ratio. In addition, results also show that all PIIGS countries except for Greece converge to EU-10 in terms of budget deficit-to-GDP ratio.

La banque centrale européenne (bce) n'est pas une institution au sens des traités communautaires. pourtant elle dispose, à l'image des institutions, de pouvoirs législatifs et exécutifs. au sens du droit communautaire, la bce est un <<organe>>, elle jouit donc de la personnalité juridique. dans le paysage institutionnel de l'union, la bce est la seule à disposer à la fois de pouvoirs législatifs et exécutifs et de la personnalité morale. il convient de ce fait de se poser la question de la place de la bce dans ce paysage institutionnel. de plus, les pouvoirs de la bce et leur exercice sont extrêmement flous. tout d'abord, la bce partage certains pouvoirs avec le conseil ecofin, qui lui mêne en partage avec l'eurogroupe. ensuite, les pouvoirs de la bce sont exercés soit par le conseil des gouverneurs, soit par le directoire. les décisions prises par ces organes, sont ensuite mises en oeuvre par la bce elle même ou par les banques centrales nationales. il se pose donc la question des réels pouvoirs de la bce, du fait de son intégration au sein du système européen de banques centrales. beaucoup d'auteurs ont apporté des réponses à ces questions, la bce : banque centrale de la communauté, la bce autorité administrative indépedante, le bce communauté internationale à part. malgré, l'intérêt de ces travaux aucun n'a pris en compte la bce dans sa globalité et dans sa complexité. notre travail de tèse se propose de reprendre l'ensemble des questions relatives à la place de la bce dans les institutions et organes de l'union, afin de mieux définir et comprendre cet organe à part. / The Eurosystem is a unique structure of European Union law which includes the central banks of States that have adopted the euro and the European Central Bank. A theoretical study of the evolution of the exercise of power within the Union demonstrates the emergence of a new methode of integration called "vertical integration." In a dialectical process between theory and reality of the Eurosystem, the main features of the the vertical integration method can be tested and its main qualities and defects disclosed.The method of vertical integration led to the construction of sub-systems composed of national bodies and body of the Union. The method operates in four directions. The sub- system thereby producted relates formally and functionally to the EU and operates in a specific sector which imposes the specificities of its action. It can be said "organized" (its components are interconnected by complex interrelationships guaranteeing the unity and effectiveness of the system). It is independent from the states as it is from the political institutions of the Union.The study of the Eurosystem through this perspective allows to elucidate the nature of this unusual construction whose action in crises - the financial crisis and the sovereign debt crisis - was crucial. Such research can also highlight, under a new perspective, the recent developments in the institutional system of the EU as a whole.

The dissertation is composed of three empirical research papers analyzing the development on credit derivatives markets in recent years characterized by the global financial crisis in 2007- 2009 and subsequent European sovereign debt crisis. The basic motivation of the thesis is to contribute to the clarification of the turbulent development on credit derivatives markets. The first paper addresses main flaws of a collateralized debt obligation (CDO) market during the global financial crisis. The second paper examines the impact of the Greek debt crisis on sovereign credit default swap (CDS) reliability. The third paper analyzes whether a resulting change in CDS terms restored confidence in CDS contracts. An introductory chapter presents a common framework for the three papers. In the first paper, we examine valuation of a Collateralized Debt Obligation (CDO) in 2007- 2009. One Factor Gaussian Copula Model is presented and five hypotheses regarding CDO sensitivity to entry parameters are analyzed. Four main deficiencies of the CDO market are then articulated: i) an insufficient analysis of underlying assets by both investors and rating agencies; ii) investment decisions arising from the valuation model based on expected cash-flows and neglecting other factors such as mark-to-market losses; iii)...