O objetivo desse trabalho é, a partir de um modelo estrutural de economia aberta novokeynesiano, determinar se as flutuações econômicas no Brasil são resultados de algumas poucas fontes principais de choques ou de muitas fontes diferentes de choques bem como as respostas dinâmicas que estes geram nas flutuações econômicas, utilizando-se da análise de decomposição de erros de Cholesky. Para isso, a analise feita nesse trabalho inicia-se com a abordagem teórica do regime de metas de inflação, situando o regime dentro do novo consenso macroeconômico. Então, a abordagem empírica para o caso brasileiro é realizada estimando-se um modelo de vetores autorregressivos (VAR) contemplando proxies que melhor representam as principais variáveis macroeconômicas brasileiras, sendo essas escolhidas a partir do estudo dos trabalhos empíricos que trataram da política monetária no Brasil em período recente. A análise dos efeitos dos choques é realizada por meio das funções de resposta ao impulso e da decomposição do erro de previsão. Os principais resultados empíricos obtidos por esse trabalho sugerem que: i) a taxa de juros se mostra como um importante instrumento para a política monetária, sendo utilizada pelo Banco Central para conter pressões sobre o hiato do produto e da inflação; ii) surpresas inflacionárias não trazem ganhos temporários em termos de um produto maior do que o nível natural; iii) a taxa de inflação mostra uma razoável persistência; iv) a taxa de inflação mostrou-se sensível a variações no câmbio. / The mean goal of this dissertation is to determine if the Brazilian output fluctuation is due to few mean sources of shocks or to several sources of shocks, using Cholesky error decomposition analysis. In order to do it, the analysis starts with a theoric approach for the inflation targeting regime, placing it into the new macroeconomic consensus. After that, the empirical approach for the Brazilian case is done by estimating an autoregressive model using proxies that best represent the mean Brazilian macroeconomic variables. These variables were chosen after a careful study of the empirical Brazilian monetary policy working papers done recently. The analysis of the shocks effects is done through both impulse-response functions and error forecast decomposition. The mean results suggest that: i) the interest rate is an important monetary policy tool and its being used by the Brazilian Central Bank in order to avoid pressures on both inflation and output gap; ii) inflation shocks does not bring gains in terms of higher product in the sort run; iii) the inflation rate has a reasonable degree of persistence; iv) the inflation rate is sensitive to exchange rate changes.

Since the 1970s, the international economic system has become prone to the volatility and undue effects associated with booms and busts. This forty year period spanning the present has exhibited restrained growth and repressive economic development. Critical changes to the system are presented by the transition from "Fordism" to the post 1970s neoliberal regime and the globalization of world markets. Underpinning this transformation is an ideological shift towards free market capitalism and the adoption of "reduced form" market models. These "reduced form" models appear to hinder economic sustainability as their grounding in economics fails to account for real economic activity. This thesis aims to provide a more holistic perception of sustainability, one that provides a sound basis on which to develop sustainable economic policy. The Regulationist Approach presents the requisite understanding of economic sustainability required within this research. The inclusion of economic, historical and socio-political fields of research proposes a wider understanding of the political economy and sustainability. The application of the Regulation Approach to the South African economy illustrates many problem areas that require attention. The examination found that firstly, aggregate demand in the South African economy was unsustainable due to the debt driven nature of demand under the asset price bubble of the mid to late 2000s. Secondly, aggregate supply also proved unsustainable as government is failing to provide any substantive growth within important sectors of the economy such as education and the provision of general services. Furthermore, the adoption of inflation targeting in South Africa poses a barrier to sustained economic growth as it focuses singularly on price inflation. The "reduced form" model of inflation targeting fails to account for market failures and a number of vital indicators of sustainability most notably, debt levels and asset prices. The inclusion of these indicators, and financial stability more generally, are found to provide a more holistic and sustainable approach to macroeconomic policymaking.

This thesis estimates the treatment effect of inflation targeting adoption on inflation, inflation variability, output, and output variability for 25 explicit inflation targeting countries. I implement the propensity score matching methodology that takes into account the problems of non-experimental nature, such as selection bias or selection on observable, and allows me to effectively mimic properties of randomized experiment and compute unbiased treatment effect estimates. I introduce a variety of propensity score matching methods that were recently developed in the treatment effect literature, including Nearest Neighbor, Radius matching, Kernel matching, and Inverse Probability Weighting. The results indicate that both industrial and developing inflation targeting countries exhibit lower inflation levels and at the same time higher output growth than non-targeting countries. The estimates are however in most cases statistically insignificant. Moreover, it appears that both industrial and developing countries achieve combination of lower inflation variability and output variability compared to non-targeting countries. Nonetheless, majority of the estimates are again statistically insignificant. The results are to a small extent sensitive to the choice of propensity score matching method. Radius matching with tight calipers (r=0.005, r=0.001) tends to provide the most reliable estimates. Balancing properties of the models are reasonable and compared to the previous research the standardised biases are quantitatively better.

This thesis deals with the use of foreign-exchange interventions as an unconventional tool of monetary policy in inflation targeting regime. It is primary focused on monetary policy of the Czech National Bank and foreign-exchange interventions that have been executed since November 2013. Further, it is devoted to interventions executed by the Swiss National Bank and the Bank of Israel. The main aim is to analyse the experience of previously mentioned central banks with foreign-exchange interventions, to describe main reasons and goals, and especially impacts of interventions on economies of related countries while focusing on inflation, GDP and unemployment. The last part provides the evaluation of referred intervention regimes and their comparison.

The thesis discusses some issues on the topic of money velocity. Its goal is to summarise theroretical contributions in this area, which are followed by a practical application through the monetary analysis of the Slovak Republic from 1993 to 2000. The theoretical part involves the first approaches to money velocity, explanation of the quantity theory of money and monetarism and their critique. It also describes the monerary transmission mechanism. The practical application part evaluates the impact of the stability of money velocity on the decision of the National Bank of Slovakia to abandon monetary targeting. It also focuses on the other variables that influenced monetary policy execution. The last chapter is devoted to the importance of money velocity if the central bank uses inflation targeting as its policy.

The diploma thesis focuses on inflation targeting in central Europe. It describes experience of three central European countries (Czech republic, Poland, Hungary) with inflation targeting. First part of thesis deals with theoretical aspects of inflation targeting. Next part brings closer look at application of inflation targeting in above - mentioned countries. Last part of thesis analyzes efficiency of inflation targeting.

In the third millennium CNB took over a Policy of Inflation Targeting. Czech Republic was one of the first countries which adopted that policy. This diploma is connected with bachelor thesis, entitled "Instruments of Monetary Policy in Czech Republic since 2000" written in 2009 and deals with explanations of tools and principles of monetary policy in terms of the political course of inflation targeting.

This thesis aims at currency interventions executed by Czech and Suisse central bank and their following comparison. Currency interventions became lately monetary instrument that both central banks adopted. Effect of intervention on real economic situation in both countries will be content of this thesis. Because of the scale off the interventions, this issue is still current and it is still publicly debated. First part of this thesis introduces systems of exchange rate arrangements and describes the role of central bank. Second part of this thesis deals with currency interventions in Czech Republic and focuses on intervention impacts on real economics. Third part is devoted to Suisse currency intervention.

The current monetary policy has been a widely discussed topic. The main focus has been given to the inflation targeting and whether it is suitable in situations with low inflation and low interests rates. The present study is addressing the monetary policy regimes and evolution of targeting aggregates under inflation targeting. The goal of my thesis is to verify whether the interests rates close to technical zero don t cause systematically larger deviations of forecasts of inflation from reality. Having compared most monetary regimes, their advantages and disadvantages in the current situation, I have come to the conclusion that although inflation targeting is not absolutely perfect, the shortcomings and the pitfalls of other regimes are considerably less favourable. Although the inflation deviation is increasing, this is most likely attributable to the error of model and the overtly optimistic forecast of the Czech National Bank than to the possibility that the errors directly relate to the level of interests rates.

Price Level Targeting with Imperfect Rationality: A Heuristic Approach Vojtěch Molnár Abstract The thesis compares price level targeting and inflation targeting regimes in a New Keynesian model without rational expectations hypothesis. Economic agents instead form their expectations using heuristics-they choose between a few simple rules based on their past forecasting performance. Two main specifications of the price level targeting model are examined-the agents form expectations either about price level or about inflation, which is ex ante not equivalent because of sequential nature of the model. In addition, several formulations of the forecasting rules are considered. According to the results, price level targeting is preferred in the case with expectations created about price level under the baseline calibration; but it is sensitive to some model parameters. Furthermore, when expectations are created about inflation, price level targeting over time loses credibility and leads to divergence of the economy. On the other hand, inflation targeting model functions stably. Therefore, while potential benefits of price level targeting have been confirmed under certain assumptions, the results suggest that inflation targeting constitutes significantly more robust choice for monetary policy.