Determinantes de intervenção do Banco Central do Brasil no mercado de câmbio: uma abordagem empírica por regressão logística e redes neurais

Em economias com regimes de metas de inflação é comum que Bancos Centrais intervenham para reduzir os níveis de volatilidade do dólar, sendo estas intervenções mais comuns em países não desenvolvidos. No caso do Brasil, estas intervenções acontecem diretamente no mercado à vista, via mercado de derivativos (através de swaps cambiais) ou ainda com operações a termo, linhas de liquidez e via empréstimos. Neste trabalho mantemos o foco nas intervenções no mercado à vista e de derivativos pois estas representam o maior volume financeiro relacionado à este tipo de atuação oficial. Existem diversos trabalhos que avaliam o impacto das intervenções e seus graus de sucesso ou fracasso mas relativamente poucos que abordam o que levaria o Banco Central do Brasil (BCB) a intervir no mercado. Tentamos preencher esta lacuna avaliando as variáveis que podem se relacionar às intervenções do BCB no mercado de câmbio e adicionalmente verificando se essas variáveis se relacionam diferentemente com as intervenções de venda e compra de dólares. Para tal, além de utilizarmos regressões logísticas, como na maioria dos trabalhos sobre o tema, empregamos também a técnica de redes neurais, até onde sabemos inédita para o assunto. O período de estudo vai de 2005 a 2012, onde o BCB interveio no mercado de câmbio sob demanda e não de forma continuada por longos períodos de tempo, como nos anos mais recentes. Os resultados indicam que algumas variáveis são mais relevantes para o processo de intervenção vendendo ou comprando dólares, com destaque para a volatilidade implícita do câmbio nas intervenções que envolvem venda de dólares, resultado este alinhado com outros trabalhos sobre o tema.

Biografia de um livro raro: manuscrito jesuítico na Biblioteca de Oswaldo Cruz

O objeto desta pesquisa é um livro raro e especial, integrante da Biblioteca de Obras Raras da Fundação Oswaldo Cruz (Fiocruz). Trata-se do Formulário Médico, escrito em 1703 por jesuítas. Esse livro é um manuscrito, composto por 225 páginas, nas quais estão descritas receitas médicas para a cura de diversas doenças, através da utilização da fauna e da flora dos locais onde as missões jesuíticas se instalaram. Além de traçar uma biografia dessa obra, investigando sua trajetória no acervo da Fiocruz, a pesquisa também analisou a forma como o Formulário Médico foi tratado no acervo ao longo de décadas. Ao abordar também esse aspecto, esperamos contribuir significativamente para as reflexões sobre a responsabilidade das instituições de guarda, em geral, no que diz respeito à forma e à preservação de tais obras para o futuro.

António Nobre e o simbolismo em Portugal

Nesta dissertação são analisados alguns poemas de Só com o intuito de tentar compreender e verificar eventuais contributos de António Nobre para o Simbolismo em Portugal. Ao longo da nossa investigação, daremos uma particular atenção a alguns dos temas mais recorrentes na obra de António Nobre: a Solidão, a Angústia e a Morte. Sabemos que existem outras temáticas sobre as quais faremos uma breve referência; contudo, por se tratar de um vasto campo de possibilidades, limitámos o número de temas a desenvolver no presente trabalho. Veremos de que modo a última década do século XIX foi marcada, no continente Europeu, por um movimento de reação ao cientismo e ao naturalismo, bem como ao ambiente espiritual surgido em Portugal pelas mãos dos «Vencidos da Vida», cujo especial relevo terá sido atribuído a António Nobre. Verificaremos de que modo Só poderá emergir como uma obra de cariz confessional tendo tido na época o objetivo de abalar os cânones tradicionais em vigor. Só apresenta-se, entre outras possibilidades, como a expressão da história de fracassos e de fadigas do povo lusitano que cultiva o sentimento amargo da saudade, uma obra que dá a ver o retrato de Portugal do século XIX e, assim, a identidade do povo que vê Portugal decair.

Formulação de bloco intertravado cerâmico com adição de resíduos urbanos e industriais

The production of waste from urban and industrial activities is one of the factors of environmental contamination and has aroused attention of the scientific community, in the sense of its reuse. On the other hand, the city of Salvador/Ba, with approximately 262 channels, responsible for storm water runoff, produces every year, by the intervention of cleaning and clearing channels, a significant volume of sediments (dredged mud), and thus an appropriate methodology for their final destination. This study aims to assess the influence of incorporation of these tailings in arrays of clay for production of interlocked block ceramic, also known as ceramic paver. All the raw materials from the metropolitan region of Salvador (RMS) were characterized by x-ray fluorescence, x-ray diffraction, thermal analysis (TG and TDA), particle size analysis and dilatometry. With the use of statistical experimental planning technique, ternary diagram was defined in the study region and the analyzed formulations. The specimens were prepared with dimensions of 60x20x5mm³, by uniaxial pressing of 30 MPa and after sintering at temperatures of 900°, 1000º and 1100ºC the technological properties were evaluated: linear shrinkage, water absorption, apparent porosity, apparent specifies mass, flexural rupture and module. For the uniaxial compression strength used cylindrical probe body with Ø 50 mm. The standard mass (MP) was prepared with 90% by weight of clay and 10% by weight of Channel sediment (SCP), not being verified significant variations in the properties of the final product. With the incorporation of 10% by weight of manganese residue (PFM) and 10% by weight of the Ceramic waste (RCB) in the mass default, in addition to adjusting the plasticity due to less waste clay content, provided increased linear firing shrinkage, due the significant concentration of K2O, forming liquid phase at low temperature, contributing to decreased porosity and mechanical resistance, being 92,5 MPa maximum compressive strength verified. After extract test leachate and soluble, the piece containing 10% of the PFM, was classified as non-hazardous and inert material according to NBR10004/04 ABNT. The results showed the feasibility on using waste, SCP, RCB and PFM clay mass, at temperatures above 900ºC, paver ceramic production, according to the specifications of the technical standards, so that to exceed the 10% of the PFM, it becomes imperative to conduct studies of environmental impacts

"Eis que a semente caiu em boa terra": a avenida Cruz Cabugá no Recife-PE como campo religioso local

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior

Aprendendo a pertencer: uma leitura da trezena de Santo Antônio em Pradoso enquanto territorialidade humana

The Novena of St. Anthony in Pradoso, is an annual celebration that takes place between June 1 and June 13. Since its preparation to the conclusion of the celebration are employed traditional knowledges and techniques, which are shared by the community. Such knowledges, built over generations, associated with popular religion, form it into the educational processes that build, through orality, practices and experiences of everyday life, the sense of belonging. An analysis of scenes, knowledges and subjects involved in the celebration, shows the form and content of practices capable of building symbolic territories of belonging. Thus, the Novena of St. Anthony in Pradoso, while an human territoriality, is designed as a locus of learning of belonging, reaffirming community values such as solidarity, service, brotherhood, integration, among others. While empirical reference for an analysis of the importance of belonging, the Novena of St. Anthony in Pradoso, offers subsidies for the production of knowledge, focused on understanding the need for a reconnection of technical and humanistic knowledges

O currículo e as práticas pedagógicas na EJA: concepções e crenças dos professores da escola municipal Francisca Leonísia Cruz

The present investigation deals with the Curriculum and Pedagogical Practices of Young and Adults, EJA, and articulates with the conceptions and beliefs of teachers sitting. The empirical scope of this investigation consisted in the Municipal School Francisca Leonísia, located in the Agrarian Reform Settlement Serra Nova, city of Florânia/RN. Seeks to analyze the relationship between the Curriculum and Educational Practices of Young and Adult EJA - conceptions beliefs of these teachers. This work is based on qualitative research, interpretative character reflective and makes use of documentary analysis, structured interviews and reflective sessions as methodological procedures which ensure the achievement of our goals in research. These procedures allowed us to enter the practice setting and curriculum for teachers to understand how they think, prepare and practice of adult education in school curriculum research field. The documentary analysis provided the rethinking of the curriculum selected references, Political Pedagogical Project and Proposed Course of EJA, from a critical reading of concepts and conceptions given in these references, with a view to construction and reconstruction of concepts that reclaim the identity of young people and adult field, inserted in the Rural Workers Movement landless/MST. As reflective sessions were constituted in spaces of collective training and allowed the group to selfreflection e collective reflection about the ideas and beliefs that permeate the curriculum and guide their practices education in adult education. In these areas of training are also discussed current problems of adult education, the construction of an educational project of the adult education field to, warranties of learning and cultural identity of the adult education field and placed in the context of the MST. Under this view, it is concluded that the conceptions and beliefs of teachers seated directly relate to the curriculum designed, developed and practiced in adult education, as well as the educational practices that permeate the curriculum. This relation is in the midst of adversities of Rural Education, inserted in the Movement of Landless Rural Workers-MST, and requires the commitment of teachers to the necessary changes to an education are critical and emancipatory

Luiz Antônio dos Santos Lima e o seu legado educacional (Natal/RN, 1910-1961)

This research aims to analyze the intellectual practice of Luiz Antônio Ferreira Souto dos Santos Lima. This is done considering the author´s legacy related to the History of Education in Rio Grande do Norte/Brazil in the time span of 1910 to 1961. Thus, the research is grounded on assumptions that rely on the Cultural History field. The research also dealt with dialogues between the author and Chartier (1990), Elias (1994), Morais (2003; 2006), as well as Gondra (2003). For the bibliographical research the work dealt with a vast array of documents such as newspapers called A República and Diário do Natal, Pedagogium, Revista do ensino, as well as state laws and decrees These documents were obtained at the Historical and Geographical Institute in Rio Grande do Norte. The research also dealt with School Bylaws and a medical doctoral thesis called Mental Hygiene and Education that was written by Luiz Antônio dos Santos Lima. Other documents were obtained at the State´s Public Archive, such as the Book of Honor, Work Records, Reports and Minutes of the General Directorate of Public Instruction Meetings. It was possible to infer that professor Luiz Antônio dos Santos Lima was teacher at Grupo Escolar Augusto Severo, the Atheneu as well as some local grade schools. The professor had a broad role in society, in administrative positions such as the Presidency of the Association of Teachers of Rio Grande do Norte, as Grade School Director in the School of Pharmacy and the State Education Department. He was also a member of the Academy of Arts and a partner at Historical and Geographical Institute in Rio Grande do Norte. The professor has also concerned with issues related to teaching good habits such as feeding, grooming, discipline, game morals, temperance, smoking, sex education; all of which necessary for the formation of healthy children. He was an enthusiast of an intuitive method and teaching lessons through practice, that he considered key elements in education. It is seen that professor Luiz Antônio dos Santos Lima had presence in the State´s health education and that his ideals were line with the ideal of modernity of the early twentieth century

A concepção de ensino sob medida na obra hygiene mental e educação (1927), de Luiz Antônio dos Santos Lima

This dissertation examines the concept of the personalized teaching proposed by the physician and educator from Rio Grande do Norte Luiz Antonio dos Santos Lima, in his doctoral thesis "Mental Hygiene and Education," published in 1927. To do so, we start from the assumption that this thinker appropriated part of the educational theory formulated by Èdouard Claparède - specifically, in the case of the teaching concepts of the personalized teaching and comprehensive education designed by the Swiss intellectual - and, considering the Brazilian social reality of early twentieth century, reframed these concepts, adapting them to the country context. To implement the proposed idea, the bibliographical study was the option chosen, and so was done through a theoretical research which had as a reference authors whose studies referred to the Brazilian historical moment in the late nineteenth and early twentieth century, our examined time frame. As for the understanding and the methodological analysis of discourse, seen as socially constructed, the Foucault postulations were studied under an analytical approach, in which the disciplinary society is analyzed from the relations of power and knowledge that exist in it. The main source of this research was the work of "Mental Hygiene and Education," published as a requirement to the obtainment of Luiz Antonio s medical degree by the Rio de Janeiro Medicine School. Thus, it was found that the conception of personalized learning to the comprehensive education of students, as proposed in the doctoral thesis of Luiz Antonio dos Santos Lima, was related to abnormalities of mental character that children could present. School education was thought in a way by the potiguar thinker that it could be applied as deep as the moral, intellectual and behavioral deviations of the individual were, making use of hygiene practices of the minds through a normalizing process towards a civilized and developed future of the Brazilian nation which would manage, watch and fix the thoughts of the school students

Estudo do acoplamento entre superfícies seletivas de frequência assimétricas em estruturas de multicamadas

This work presents the development of new microwaves structures, filters and high gain antenna, through the cascading of frequency selective surfaces, which uses fractals Dürer and Minkowski patches as elements, addition of an element obtained from the combination of the other two simple the cross dipole and the square spiral. Frequency selective surfaces (FSS) includes a large area of Telecommunications and have been widely used due to its low cost, low weight and ability to integrate with others microwaves circuits. They re especially important in several applications, such as airplane, antennas systems, radomes, rockets, missiles, etc. FSS applications in high frequency ranges have been investigated, as well as applications of cascading structures or multi-layer, and active FSS. In this work, we present results for simulated and measured transmission characteristics of cascaded structures (multilayer), aiming to investigate the behavior of the operation in terms of bandwidth, one of the major problems presented by frequency selective surfaces. Comparisons are made with simulated results, obtained using commercial software such as Ansoft DesignerTM v3 and measured results in the laboratory. Finally, some suggestions are presented for future works on this subject

Otimização do Uso das Águas da Barragem Santa Cruz-RN

The semiarid potiguar presents a quite discrepant. It is a region with one of the highest rates of artificial lake the world, but the policy of building dams to mitigate the problem of water scarcity does not solve, given that they have not demonstrated the ability to ensure supply human priority during periods of great drought and fail to solve the widespread demand existent in the semiarid. This work aims to present the optimal allocation of water, according to multiple uses and limited availability of water resources in the reservoir, from the simulation of the operation of the same, with the application of techniques to support decision making and performance evaluation alternatives for water use. The reservoir of Santa Cruz, the second largest reservoir of RN with storage capacity of approximately 600 million cubic meters, located about 20 km from the town of Apodi in RN, was conceived as a way to promote economic development in the region as well as the water supply of nearby towns. The techniques used are the simulation model of network flow ACQUANET and also the set of performance indicators. The results showed that the container has the capacity to serve up to 3,83m3/s flow required by existing uses, without any compromising the same. However, it was also observed that all anticipated future demands are implemented it will generate failures in meeting some uses

O riso irônico na obra poética de Cruz e Sousa

This work brings up a review on the poetic works of Cruz e Sousa, a nineteenth-century Brazilian poet. Laughter has been chosen as an analytical category, because it is a pertinent theme which makes possible a more accurate comprehension of the lyric content of Cruz e Sousa s poetic works. The laughter manifested in his verses is seen as a mechanism which compensates both normativeness and seriousness, as well as turns inside out whatever society establishes as being natural or an absolute truth. Amongst his poems, we will focus on the ones which express their lyric nature both through laughter and irony, since these elements serve as a means to criticize the Brazilian society in the late nineteenth-century and early twentieth-century. This study is guided by theories of laughter proposed by Minois (2003), Bakhtin (1993), Bergson (2007), as well as Adorno s (2003) and Antonio Candido s (2010) theoretical assumptions concerning lyric poetry and society

Bairro Planalto, Natal-RN: agentes, usos e conflitos

This research has the goal to analyze the urban setting of the Planalto neighborhood, in Natal /RN, seeking to unravel the processes, agents and contradictions associated with the production of the space. The choice of neighborhood is justified by the observation that changes in its urban setting have been growing in speedy way. We highlight the performance of the housing market, in partnership with the state, and the construction of condominiums and buildings closed by the housing program Minha Casa, Minha Vida. This has favored the reproduction of a new " urban reality in the neighborhood, setting an urban standard that differs from the original morphology, seen as peripheral within the urban dynamics of the city. The research is a qualitative study, through documents, interviews with stakeholders, and photographic documentation. In this perspective , we seek to understand the current phase (2000s) the production of space in the neighborhood process through the development of the housing market , as an extension of the urban development in central zone of Natal/RN, analyzing the performance of agents and their producers the "new " uses redefining the "old ". Thus, it can be seen that there is in the neighborhood, urban reality in a pluralistic constitution, from the existence of different social classes inhabiting the same space. On this way, the city is produced from the appropriation of space by different social classes, although due to the economic condition of each of them

Fatores capazes de influenciar o apoio dos residentes ao desenvolvimento do turismo religioso em Santa Cruz - RN

This study is about the primary stakeholder management - the resident community, given its participation and support for the development of tourism in touristic destinations. It has as a general aim to analyze the factors that are capable to influence the residents‟ support to the development of religious tourism in Santa Cruz, RN, and the existing interrelationships between factors. In order to achieve this objective, it was necessary to use exploratory and descriptive research, followed by a quantitative approach through questionnaires with 422 residents of Santa Cruz -RN. The study was based on the variables relationship model proposed by Nunkoo and Ramkissoon (2012), it was also used the technique of Structural Equation Modeling - SEM, aiming to explain the relationships between the constructs studied. The results found on the survey suggest that the more residents realize the benefits generated by tourism, as well as trust in government actors in charge of tourism development, the more there will be a propensity to support the development of religious tourism. This result is similar to the one found in the study of Nunkoo and Ramkissoon (2012). We conclude that the structural model that best represents the reality of Santa Cruz -RN is composed of the factors: benefits, costs, and confidence in governmental actors, which are able to influence the support of Santa Cruz‟s residents for the development of religious tourism. It is also noteworthy that it was found a highly significant connection between the factors benefits perceived from tourism and confidence in governmental actors and between both of them, the political support for tourism