Conflicting structural and geochronological data from the Ibituruna quartz-syenite (SE Brazil): Effect of protracted ""hot"" orogeny and slow cooling rate?

The Ibituruna quartz-syenite was emplaced as a sill in the Ribeira-Aracuai Neoproterozoic belt (Southeastern Brazil) during the last stages of the Gondwana supercontinent amalgamation. We have measured the Anisotropy of Magnetic Susceptibility (AMS) in samples from the Ibituruna sill to unravel its magnetic fabric that is regarded as a proxy for its magmatic fabric. A large magnetic anisotropy, dominantly due to magnetite, and a consistent magnetic fabric have been determined over the entire Ibituruna massif. The magmatic foliation and lineation are strikingly parallel to the solid-state mylonitic foliation and lineation measured in the country-rock. Altogether, these observations suggest that the Ibituruna sill was emplaced during the high temperature (similar to 750 degrees C) regional deformation and was deformed before full solidification coherently with its country-rock. Unexpectedly, geochronological data suggest a rather different conclusion. LA-ICP-MS and SHRIMP ages of zircons from the Ibituruna quartz-syenite are in the range 530-535 Ma and LA-ICP-MS ages of zircons and monazites from synkinematic leucocratic veins in the country-rocks suggest a crystallization at similar to 570-580 Ma, i.e., an HT deformation >35My older than the emplacement of the Ibituruna quartz-syenite. Conclusions from the structural and the geochronological studies are therefore conflicting. A possible explanation arises from (40)Ar-(39)Ar thermochronology. We have dated amphiboles from the quartz-syenite, and amphiboles and biotites from the country-rock. Together with the ages of monazites and zircons in the country-rock, (40)Ar-(39)Ar mineral ages suggest a very low cooling rate: <3 degrees C/My between 570 and similar to 500 Ma and similar to 5 degrees C/My between 500 and 460 Ma. Assuming a protracted regional deformation consistent over tens of My, under such stable thermal conditions the fabric and microstructure of deformed rocks may remain almost unchanged even if they underwent and recorded strain pulses separated by long periods of time. This may be a characteristic of slow cooling ""hot orogens"" that rocks deformed at significantly different periods during the orogeny, but under roughly unchanged temperature conditions, may display almost indiscernible microstructure and fabric. (C) 2009 Elsevier B.V. All rights reserved.

Homogenization of Precipitation Hardening Nickel Based Superalloys

Allvac 718 Plus and Haynes 282 are relatively new precipitation hardening nickel based superalloys with good high temperature mechanical properties. In addition, the weldability of these superalloys enhances easy fabrication. The combination of high temperature capabilities and superior weldability is unmatched by other precipitation hardening superalloys and linked to the amount of the γ’ hardening precipitates in the materials. Hence, it is these properties that make Allvac 718 Plus and Haynes 282 desirable in the manufacture of hot sections of aero engine components. Studies show that cast products are less weldable than wrought products. Segregation of elements in the cast results in inhomogeneous composition which consequently diminishes weldability. Segregation during solidification of the cast products results in dendritic microstructure with the segregating elements occupying interdendritic regions. These segregating elements are trapped in secondary phases present alongside γ matrix. Studies show that in Allvac 718Plus, the segregating phase is Laves while in Haynes 282 the segregating phase is not yet fully determined. Thus, the present study investigated the effects of homogenization heat treatments in eliminating segregation in cast Allvac 718 Plus and Haynes 282. Paramount to the study was the effect of different homogenization temperatures and dwell time in the removal of the segregating phases. Experimental methods used to both qualify and quantify the segregating phases included SEM, EDX analysis, manual point count and macro Vickers hardness tests. Main results show that there is a reduction in the segregating phases in both materials as homogenization proceeds hence a disappearance of the dendritic structure. In Allvac 718 Plus, plate like structures is observed to be closely associated with the Laves phase at low temperatures and dwell times. In addition, Nb is found to be segregating in the interdendritic areas. The expected trend of increase in Laves as a result of the dissolution of the plate like structures at the initial stage of homogenization is only detectable for few cases. In Haynes 282, white and grey phases are clearly distinguished and Mo is observed to be segregating in interdendritic areas.

CO2 Emissions, GDP and trade : a panel cointegration approach

This paper examines the relationships among per capita CO2 emissions, per capita GDP and international trade based on panel data sets spanning the period 1960-2008: one for 150 countries and the others for sub-samples comprising OECD and Non-OECD economies. We apply panel unit root and cointegration tests, and estimate a panel error correction model. The results from the error correction model suggest that there are long-term relationships between the variables for the whole sample and for Non-OECD countries. Finally, Granger causality tests show that there is bi-directional short-term causality between per capita GDP and international trade for the whole sample and between per capita GDP and CO2 emissions for OECD countries

Essays on growth and environment

This thesis consists of a summary and four self-contained papers. Paper [I] Following the 1987 report by The World Commission on Environment and Development, the genuine saving has come to play a key role in the context of sustainable development, and the World Bank regularly publishes numbers for genuine saving on a national basis. However, these numbers are typically calculated as if the tax system is non-distortionary. This paper presents an analogue to genuine saving in a second best economy, where the government raises revenue by means of distortionary taxation. We show how the social cost of public debt, which depends on the marginal excess burden, ought to be reflected in the genuine saving. We also illustrate by presenting calculations for Greece, Japan, Portugal, U.K., U.S. and OECD average, showing that the numbers published by the World Bank are likely to be biased and may even give incorrect information as to whether the economy is locally sustainable. Paper [II] This paper examines the relationships among per capita CO2 emissions, per capita GDP and international trade based on panel data spanning the period 1960-2008 for 150 countries. A distinction is also made between OECD and Non-OECD countries to capture the differences of this relationship between developed and developing economies. We apply panel unit root and cointegration tests, and estimate a panel error correction model. The results from the error correction model suggest that there are long-term relationships between the variables for the whole sample and for Non-OECD countries. Finally, Granger causality tests show that there is bi-directional short-term causality between per capita GDP and international trade for the whole sample and between per capita GDP and CO2 emissions for OECD countries. Paper [III] Fundamental questions in economics are why some regions are richer than others, why their growth rates differ, whether their growth rates tend to converge, and what key factors contribute to explain economic growth. This paper deals with the average income growth, net migration, and changes in unemployment rates at the municipal level in Sweden. The aim is to explore in depth the effects of possible underlying determinants with a particular focus on local policy variables. The analysis is based on a three-equation model. Our results show, among other things, that increases in the local public expenditure and income taxe rate have negative effects on subsequent income income growth. In addition, the results show conditional convergence, i.e. that the average income among the municipal residents tends to grow more rapidly in relatively poor local jurisdictions than in initially “richer” jurisdictions, conditional on the other explanatory variables. Paper [IV] This paper explores the relationship between income growth and income inequality using data at the municipal level in Sweden for the period 1992-2007. We estimate a fixed effects panel data growth model, where the within-municipality income inequality is one of the explanatory variables. Different inequality measures (Gini coefficient, top income shares, and measures of inequality in the lower and upper part of the income distribution) are examined. We find a positive and significant relationship between income growth and income inequality measured as the Gini coefficient and top income shares, respectively. In addition, while inequality in the upper part of the income distribution is positively associated with the income growth rate, inequality in the lower part of the income distribution seems to be negatively related to the income growth. Our findings also suggest that increased income inequality enhances growth more in municipalities with a high level of average income than in municipalities with a low level of average income.

Implementação de CRM para viabilização de marketing de relacionamento: um estudo de caso

Foco em estratégias empresariais para a longevidade da relação com clientes, comunicação personalizada bidirecional, múltiplos pontos de contato, novas formas de segmentação de mercado, estrutura organizacional descentralizada e mensuração em tempo real da satisfação dos clientes, são exemplos que indicam a existência de uma forma de marketing diferenciada, denominada de marketing de relacionamento. Motivada pela crescente demanda empresarial por tecnologias mercadológicas, a indústria de softwares criou, em meados dos anos 90, um sistema denominado de Customer Relationship Management (CRM) com a promessa de gerenciar, de forma integrada, todos os relacionamentos com os clientes. Gradativamente, novas funcionalidades foram incorporadas ao sistema que alcançou ampla difusão no meio empresarial, responsável por investimentos na ordem de bilhões de dólares ao ano. Enquanto os fabricantes de CRM anunciam crescimentos significativos de vendas, o mercado vem apresentando sinais de insatisfação. Há dúvidas se a implementação do sistema seria suficiente para viabilizar o marketing de relacionamento e quais são seriam suas potencialidades. Pesquisar a teoria do marketing de relacionamento, levantar qUaiS são os seus elementos determinantes e investigar as possibilidades do CRM poderá contribuir para proporclOnar beneficios mútuos para as quatro partes envolvidas no relacionamento: os clientes, as empresas que comercializam produtos e serviços, fabricantes e implementadores de CRM.

Política judiciária nacional: resolução n. 125/2012 do CNJ e a sua efetividade como política pública para redução da judicialização dos conflitos

Por mais que a informatização esteja avançada (interligação por meio da rede internet de computadores entre os órgãos e entidades públicas pelo Estado), máquina alguma substituirá os dramas do homem contemporâneo, principalmente aqueles que sempre estiveram alijados da cidadania. O presente estudo traz à baila as reflexões e discussões acadêmicas desenvolvidas ao longo das mais de 700 horas/aulas do curso de mestrado em Poder Judiciário, turma 2010. Longe de ser uma unanimidade o Poder Judiciário é um poder do Estado que representa antes de tudo a capacidade e a prerrogativa de julgar, de acordo com as regras constitucionais e das leis criadas pelo Poder Legislativo em determinado país. É um dos mais sólidos pilares nas democracias e um perigoso algoz nos regimes absolutos. Apesar desta importância e de no Brasil ser um poder sólido que já demonstrou sua importância para a garantia da solidificação da democracia, são poucos os estudos sobre o Judiciário, poucos e iniciais são as pesquisas sérias sobre este poder de suma importância para a sociedade, para economia e para as instituições. Como, também, não é espanto quando vemos que fato repetitivo que a maior insatisfação ou reclamação da sociedade reside na morosidade das soluções judiciais traduzida pela alta taxa de litigiosidade da justiça brasileira. O Poder Judiciário é objeto de estudos sistemáticos, contínuos e avançados em diversos países que já demonstraram a importância de se conhecer bem as suas propostas, os resultados das suas atividades, funções e os seus gastos, pois, o seu “negócio”é a resolução dos conflitos da sociedade de forma a contribuir com a pacificação da mesma através de uma ordem jurídica justa. Os estudos realizados nos Estados Unidos, Alemanha e Espanha, como exemplo, demonstram que conhecer bem o judiciário é o primeiro passo para melhor gerenciá-lo. Assim, deve-se menção e reconhecimento no investimento realizado pela Fundação Getúlio Vargas em promover com destaque o presente Mestrado em Poder Judiciário. A FGV é uma das poucas instituições privadas que tem como um dos seus objetivos o preparo pessoal, extrapolando as fronteiras do ensino com avanços significativos nas áreas da pesquisa e da informação. No mesmo caminho da qualificação profissional de seus magistrados e servidores e na vanguarda da gestão judiciária, o Tribunal de Justiça do Distrito Federal e dos Territórios, investiu e acreditou na proposta de estudos e pesquisas do presente mestrado, merecendo, significativamente, os elogios e agradecimentos pela visão de futuro e investimento realizado no conhecimento que é sempre importante e necessário. A dissertação em comento representa primeiramente uma visão contraposta ao modelo de política pública encampada pelo Conselho Nacional de Justiça, através da Resolução 125 de 29 de novembro de 2010, cujo objeto é o tratamento adequado dos conflitos de interesse no âmbito do Poder Judiciário, representando, assim, interesse especial de pesquisa científica por se tratar de uma política nacional judiciária a ser adotada, obrigatoriamente, por todos os Tribunais de Justiça do país. Além deste aspecto supra referido, reside, também, o fato do ineditismo deste estudo e pesquisa, especificamente, porque essa política pública judiciária aborda aspectos e variáveis novas no tratamento das atividades e das funções próprias do Poder Judiciário quando propõem, como exemplo, o tratamento dos conflitos considerados pré processuais. Outro aspecto importante merecedor de atenção no estudo reflete-se na discussão do modelo de política pública que, em premissa vênia, deveria ser tratado em caráter geral republicando do Estado e não particularizado em um dos seus entes, mesmo que pareça ser, constitucionalmente, pressuposto da alçada do Poder Judiciário tratar exclusivamente do problema da altíssima litigiosidade e do baixo resultado de resposta à demanda posta para seu controle. Este estudo, tem como objetivo demonstrar que a resolução 125/2010 do CNJ é insuficiente para resolver os problemas de congestionamento e morosidade da Justiça brasileira, como preconizada, isso porque, o modelo que se propõe para combater o problema da morosidade é restrito e está “contaminado” pela idéia do monopólio da jurisdição ou por uma espécie similar que traz para o âmbito do judiciário uma nova atividade de trabalho, a qual é relacionada com a solução do conflito pré-processual a qual deveria fazer parte de uma política pública geral não restrita a um poder republicano. A correspondência dos argumentos com a materialização utilizada para o problema será comprovada nas linhas que se seguem, pois, assuntos com grande abrangência como as soluções judiciais devem, preferencialmente, adotar mecanismos públicos de caráter geral para uma boa solução. Nesse sentido, o trabalho demonstrará que as tentativas recorrentes em superar o problema da alta demanda judicial está restrita a modelos insuficientes abrangidos por um monopólio que não deveria ser aplicado para solucionar problemas pré processuais no âmbito do Poder Judiciário. Constitui, pois, um contraponto à idéia de efetividade na redução da demanda judicial tradicional 1 como prevista pela política pública judiciária frente ao monopólio da jurisdição, ou seja, frente à reserva que detém o Judiciário na promoção e gestão de uma nova atividade – o tratamento dos conflitos de interesse pré-processual por meio dos instrumentos de autocomposição, notadamente as conciliações e mediações. Apresentam-se, igualmente, neste trabalho proposições legislativas que dão o suporte material às idéias apresentadas, caracterizando a comprovação de viabilidade entre a apresentação do problema científico, as justificativas para o enfrentamento do problema e uma solução para o mesmo, como vista a modernizar uma política pública. Importante reafirmar que o escopo do presente trabalho não reside na observação própria dos modelos e técnicas de resolução de conflitos, notadamente as conciliações e mediações, incentivadas pelo CNJ, ou nos modelos arbitragem. Ao contrário, espera-se que todas as tentativas que possam melhorar e modernizar os atuais serviços judiciais no Brasil sejam válidas, eficazes e são muito bem vindas, pois, é uma tentativa positiva para melhorar o atual cenário em que se encontra o Poder Judiciário quando é confrontado em seu acesso à justiça, rapidez, confiabilidade e segurança nos seus julgamentos.

Simulador de escoamento multifásico em poços de petróleo (SEMPP)

The multiphase flow occurrence in the oil and gas industry is common throughout fluid path, production, transportation and refining. The multiphase flow is defined as flow simultaneously composed of two or more phases with different properties and immiscible. An important computational tool for the design, planning and optimization production systems is multiphase flow simulation in pipelines and porous media, usually made by multiphase flow commercial simulators. The main purpose of the multiphase flow simulators is predicting pressure and temperature at any point at the production system. This work proposes the development of a multiphase flow simulator able to predict the dynamic pressure and temperature gradient in vertical, directional and horizontal wells. The prediction of pressure and temperature profiles was made by numerical integration using marching algorithm with empirical correlations and mechanistic model to predict pressure gradient. The development of this tool involved set of routines implemented through software programming Embarcadero C++ Builder® 2010 version, which allowed the creation of executable file compatible with Microsoft Windows® operating systems. The simulator validation was conduct by computational experiments and comparison the results with the PIPESIM®. In general, the developed simulator achieved excellent results compared with those obtained by PIPESIM and can be used as a tool to assist production systems development

O corredor cultural: espaço de materialização da exclusão social em Mossoró-RN

In contemporary society, social exclusion is an actual and pertinent theme, because it presents itself as a challenge to management and planning of the public policies. In this perspective, the thesis entitled "The Cultural Corridor: space materialization of social exclusion in Mossoró-RN" is a moment of apprehension and analysis of the local reality from the urban policy implementation that emphasized an enterprising model, which has, as the concrete space to urban renovation manifestation, the cultural complex called cultural corridor. Because of the investigation and the directional hypothesis, it is possible to say that the urban development policy implemented in Mossoró, starting from the 1990 decade, based in the model of modernizing/enterprising management, has been causing an intensification of a society parcel exclusion from the city public space, since this public policy didn't prioritized job market increasing, as well as population incomes improving, poverty and social inequality reduction, at the same proportions it promoted geographic space reorganization with directional actions to build the "spectacle city"

Desenvolvimento de equipamento motorizado para aplicação líquida de produtos fitossanitários na cultura do café

O trabalho teve como objetivo desenvolver um protótipo aplicador de líquidos na superfície do solo para cafezais localizados em regiões de topografia acidentada ou cultivados em sistema de plantio adensado. O protótipo do aplicador construído é um trator de rabiças acionado por um motor de dois tempos a gasolina, de 2,61 kW (3,5 cv), com duas rodas motrizes com bitola de 0,60 m e uma terceira roda direcional, equipado com sistema de pulverização dotado de depósito de 40 L, bomba centrífuga, filtros de linha, regulador de pressão, manômetro, mangueiras, válvulas e suporte de bicos. Para avaliar a eficiência do protótipo, foram instalados dois experimentos de campo em São Sebastião do Paraíso - MG (2003 e 2004), onde foram aplicados inseticidas sistêmicos para o controle da cigarra. Os métodos de aplicação avaliados foram: aplicação em faixa, filete, drench contínuo e drench intermitente. O protótipo aplicador de líquidos à superfície do solo atendeu aos objetivos propostos, visto que conseguiu realizar o controle químico de cigarras com destaque para a aplicação em drench contínuo. O protótipo, se equipado para aplicar simultaneamente nos dois lados da planta, apresentará capacidade de campo operacional semelhante à do equipamento tratorizado.

Fatores de sucesso no desenvolvimento de novos produtos em pequenas empresas: um estudo de caso em um fabricante de equipamentos para gás natural veicular

This study presents itself as a contribution to the solidification of the Natural Gas industry, within the scope of the development of new products. The goal of this paper is to analyze the factors that lead to the success of new products through the evaluation of the activities done during the process of development of these products in the Natural Gas sector. To achieve this goal a case study was done in a small company of this segment. At first, as a basis for the study, a bibliographical research was done with books, theses, dissertations, monographies, publications in national and international periodicals, congress annals and publications in the internet related to the subject. Afterwards, a case study was done, aiming at the acquisition of further knowledge about the real process of development of products in a small company of the Natural Gas sector, allowing for the performance of the evaluation. The case study was done at Gas Project and Systems do Brasil, a company that works with the development of electronic equipment to the conversion of car engines to natural gas, through direct observations and interviews with the person responsible for the development and management of products. Through the evaluation of the process it was observed that the activities related to it are done in an informal way and some activities are considered unnecessary for their success. The results also suggest an emphasis in the technological activities, something that was not observed in the activities related to the market. The instruments used in this evaluation prove to be efficient to evaluate the process of development of new products in other companies, including those of different areas. Taking into account the relevance of the studied theme to the strengthening of the Natural Gas industry, it is necessary to do further complementary studies

Um protocolo de comunicação multicast na camada de aplicação com Consciência de Localização

Internet applications such as media streaming, collaborative computing and massive multiplayer are on the rise,. This leads to the need for multicast communication, but unfortunately group communications support based on IP multicast has not been widely adopted due to a combination of technical and non-technical problems. Therefore, a number of different application-layer multicast schemes have been proposed in recent literature to overcome the drawbacks. In addition, these applications often behave as both providers and clients of services, being called peer-topeer applications, and where participants come and go very dynamically. Thus, servercentric architectures for membership management have well-known problems related to scalability and fault-tolerance, and even peer-to-peer traditional solutions need to have some mechanism that takes into account member's volatility. The idea of location awareness distributes the participants in the overlay network according to their proximity in the underlying network allowing a better performance. Given this context, this thesis proposes an application layer multicast protocol, called LAALM, which takes into account the actual network topology in the assembly process of the overlay network. The membership algorithm uses a new metric, IPXY, to provide location awareness through the processing of local information, and it was implemented using a distributed shared and bi-directional tree. The algorithm also has a sub-optimal heuristic to minimize the cost of membership process. The protocol has been evaluated in two ways. First, through an own simulator developed in this work, where we evaluated the quality of distribution tree by metrics such as outdegree and path length. Second, reallife scenarios were built in the ns-3 network simulator where we evaluated the network protocol performance by metrics such as stress, stretch, time to first packet and reconfiguration group time

Otimizações da transmissão de imagens em redes de sensores visuais sem fio explorando a relevância de monitoramento dos nós fontes e codificação DWT

The development of wireless sensor networks for control and monitoring functions has created a vibrant investigation scenario, covering since communication aspects to issues related with energy efficiency. When source sensors are endowed with cameras for visual monitoring, a new scope of challenges is raised, as transmission and monitoring requirements are considerably changed. Particularly, visual sensors collect data following a directional sensing model, altering the meaning of concepts as vicinity and redundancy but allowing the differentiation of source nodes by their sensing relevancies for the application. In such context, we propose the combined use of two differentiation strategies as a novel QoS parameter, exploring the sensing relevancies of source nodes and DWT image coding. This innovative approach supports a new scope of optimizations to improve the performance of visual sensor networks at the cost of a small reduction on the overall monitoring quality of the application. Besides definition of a new concept of relevance and the proposition of mechanisms to support its practical exploitation, we propose five different optimizations in the way images are transmitted in wireless visual sensor networks, aiming at energy saving, transmission with low delay and error recovery. Putting all these together, the proposed innovative differentiation strategies and the related optimizations open a relevant research trend, where the application monitoring requirements are used to guide a more efficient operation of sensor networks