Made available in DSpace on 2014-12-17T14:34:46Z (GMT). No. of bitstreams: 1 DeboraCM_DISSERT.pdf: 1883306 bytes, checksum: 557a232f7eeb177982ac5561dc639193 (MD5) Previous issue date: 2014-02-19 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / This study aims to analyze the income differentials by gender in Brazil, in the years 1976, 1987, 1996 and 2009. Specifically, there are two objectives. First, attempt to analyze the importance of the effects of composition and wage structure in the job market. In the second, to verify which socioeconomic variables explain the effects of composition and wage structure in the job market. The information in this study was obtained from the microdata of Pesquisa Nacional por Amostra de Domic?lios (PNAD) regarding the respective years. In the first stage of the methodology we used: the index of income distribution Theil-T; the income gap decompositions proposed by Oaxaca (1973) and Blinder (1973); and Firpo et al. (2007). In the second stage we applied the RIF regression method (Recentered Influence Function) of Firpo et al. (2007). The results show that income inequality is higher among men than among women in the country. It was observed that the component of inequality between people of the same gender represented the largest share in the decomposition of income inequality between genders. It was found, in the decomposition of the average income, a downward trend of income gap, but the differential remains favorable to the men. We noticed that the impact of the composition effect in reducing the gap was offset by the positive effect of wage structure. Regarding the distribution quantis, income differential between genres appeared greater at the bottom, in the years 1976, 1987 and 2009; and at the top of the distribution, in 1996 featuring, respectively, the sticky floor and glass ceiling effects in Brazil. As for the decomposition of the RIF, it turns out that the composition effect assisted in the downfall of the income gap between 1976 and 2009, but was offset by the positive effect of the wage structure in quantis 10th, 50th, and 90th. The main socioeconomic variables influenced the drop in income gap were: the composition effect, the manual labor occupations, service sector and low-grade and high school, and the wage structure effect, schooling low and high experience professional and technical occupations and urban centers / Este estudo tem como objetivo analisar os diferenciais de rendimentos por g?nero no Brasil, no per?odo de 1976, 1987, 1996 e 2009. Especificamente, h? dois objetivos. No primeiro, procura-se analisar a import?ncia dos efeitos da composi??o e da estrutura salarial no mercado de trabalho. No segundo, procura-se verificar que vari?veis socioecon?micas explicam os efeitos da composi??o e da estrutura salarial no mercado de trabalho. As informa??es deste estudo foram obtidas nos microdados da Pesquisa Nacional por Amostra de Domic?lios (PNAD), dos respectivos anos. Na primeira etapa da metodologia foram utilizados: o ?ndice de distribui??o de renda Theil-T; as decomposi??es do hiato de renda propostos por Oaxaca (1973) e Blinder (1973); e por Firpo et al. (2007). Na segunda etapa aplicou-seo m?todo de regress?o RIF (Recentered Influence Function) de Firpo et al. (2007). Os resultados mostram que a desigualdade renda ? mais elevada entre os homens do que entre as mulheres no Pa?s. Constatou-se, que o componente de desigualdade intrag?nero representou a maior parcela na decomposi??o da desigualdade de renda entre g?neros. Observou-se, na decomposi??o dos rendimentos pela m?dia, uma tend?ncia declinante do hiato de renda, mas o diferencial se mant?m favor?vel aos homens. Indicando que o impacto do efeito composi??o na redu??o do hiato foi compensado pelo efeito positivo da estrutura salarial. Em rela??o aos quantis da distribui??o o diferencial de renda entre g?nero apresentou-se maior na parte inferior, nos anos de 1976, 1987 e 2009; e na parte superior da distribui??o, em 1996 caracterizando, respectivamente, os efeitos sticky floor e glass ceiling no Brasil. Quanto ? decomposi??o do RIF, verifica-se que o efeito composi??o auxiliou na queda do hiato de renda entre 1976 a 2009, mas, foi compensado pelo efeito positivo da estrutura salarial nos quantis 10th, 50th e 90th. Al?m disso, as principais vari?veis socioecon?micas que influenciaram na redu??o do hiato de renda foram: no efeito composi??o, as ocupa??es de trabalho manual, setor de servi?os e grau de escolaridade baixa e alta; e no efeito estrutura salarial, o grau de escolaridade baixa e alta, experi?ncia, ocupa??es profissionais e t?cnica e ?rea urbana

Made available in DSpace on 2014-07-29T14:49:10Z (GMT). No. of bitstreams: 1 Heloisio_Caetano.pdf: 4628443 bytes, checksum: b488772923cf9872b1b42391f8d89610 (MD5) Previous issue date: 2011-08-08 / The analyses of the dynamics of the crops composition in the State of Goiás was first started by Yokoyama (1988). Here, is made a continuity of this work and methodology enlargement elements like maps and graphics to better scrutinize the phenomenon throw the use of shift-share rates. Further socio economic inferences are based in agricultural frontier´s theory. The mathematical methods and uses, of the shift-share rates, are discussed. Using this model, the area effects are decomposed into scale and substitution effects, and it shows the geographic location effects for the selected microrregiões, and for this also the production effects. The agricultural frontier model is presented in basics ideas. The indices are presented for individual and the set of crops in the microrregiões and so are fluctuation of production of the set and location of crops in the State of Goiás. The results point changes in the crops composition in the State of Goiás. Staple food production in the new context, despite changes of territory of crops, it maintains important role in National context. It presents results about the important discussion that involves sugar-cane expansion, relations to soy-beans and cattle and conclusions about crop relations to ´cerrados´ area. The crop period goes is from 1990 to 2009. / A análise da composição das culturas no Estado de Goiás foi um trabalho iniciado por Yokoyama (1988). Neste realiza-se uma continuação aliada a uma atualização metodológica ao utilizar elementos como mapas e gráficos que permitiram uma visão mais ampla dos fenômenos evidenciados pelos índices Shift-Share. Neste trabalho também ocorre uma renovação da análise, onde o conceito de fronteiras agrícolas fundamenta o estudo da ação dos sujeitos. Pelo modelo decompõe-se o efeito área em efeito escala e substituição, e apresenta também o efeito localização geográfica, apresentando estes índices também em porcentagem, para as culturas selecionadas. Os efeitos são apresentados também para as microrregiões selecionadas, sendo que para estas foi possível discutir o efeito composição do produto. O modelo de fronteiras agrícolas é apresentado em suas idéias fundamentais. São apresentadas as análises a partir do cálculo dos índices, para as culturas e conjunto de lavouras, e a localização das culturas no Estado. Os resultados apontam para ocorrências na produção de alimentos frente a este novo panorama, onde apesar de o Estado sofrer consideráveis alterações na área plantada destas culturas a sua importância mantém-se no contexto nacional. Apresenta dados e resultados sobre a discussão que envolve expansão da cana-de-açúcar, relações com a soja e o gado e conclusão sobre as relação entre as culturas e as áreas de cerrado. O período analisado foi 1990 a 2009.

This dissertation is a collection of essays on challenges in international trade and international finance, which apply econometric methods to diverse data sets and relate them to economic policy questions. In times of crises, the question, whether individual countries have the ability to pursue idiosyncratic monetary policy, is important. The degree of integration and comovement between financial markets, for instance, is critical to better assess the real threat facing a country in a crisis. Also, from a macroeconomic modeling perspective, there has recently been a renewed interest in the cyclical and long-run comovement of interest rates. Hence, in a first essay, we reinvestigate the long- and short-run comovements in the G7-countries by conducting tests for cointegration, common serial correlation and codependence with nominal and real interest rates. Overall, we only find little evidence of comovements: common trends are occasionally observed, but the majority of interest rates are not cointegrated. Although some evidence for codependence of higher order can be found in the pre-Euro area sample, common cycles appear to exist only in rare cases. We argue that some earlier, more positive findings in the literature are difficult to reconcile due to differing assumptions about the underlying stochastic properties of interest rates. Hence, we conclude that they cannot be generalized for all interest rates, time periods, and reasonable alternative estimation procedures. This finding indicates that scope for individual countries to pursue stabilization policy does still exist in a globalized world. Emerging economies, in general, are much more exposed and vulnerable to crises than industrialized countries. Accordingly, stabilization policy is especially important in these countries and the selection of the best monetary regime is essential. This is why, in a second essay, we contrast two different views in the debate on official dollarization: the Mundell (1961) framework of optimum currency areas and a model on boom-bust cycles by Schneider and Tornell (2004), who take account of credit market imperfections prevalent in middle income countries. We highlight the strikingly different role of the exchange rate in the two models. While in the Mundell framework the exchange rate is expected to smooth the business cycle, the second model predicts the exchange rate to play an amplifying role. We empirically evaluate both models for eight highly dollarized Central American economies. We document the existence of credit market imperfections and find that shocks from the exchange rate indeed amplify business cycles in these countries. Using a new method proposed by Cubadda (1999 and 2007), we furthermore test for cyclical comovement and reject the hypothesis that the selected countries form an optimum currency area with the United States according to the Mundell definition. In the context of the recent global crisis, globalization and vertical integration in particular were often blamed for being the cause for the severe trade crisis. For that reason, in the essay that contributes to the trade literature, we analyze the role of international supply chains in explaining the long-run trade elasticity and its short-term volatility in the context of the recent trade collapse. We adopt an empirical strategy based on two steps: first, stylized facts on long- and short-term trade elasticity are derived from exploratory analysis and formal modeling on a large and diversified sample of countries. Then, we derive observations of interrelated input-output matrices for a demonstrative sub-set of countries. We find evidence for two supply chain related factors to explain the overshooting of trade elasticity during the 2008-2009 trade collapse: the composition and the bullwhip effect. However, evidence for a magnification effect could not be found. Overall, we do not accept the hypothesis that international supply chains explain all by themselves the changes in trade-income elasticity.