Comparison Between Dcrit Considering the Abrupt Variation and Inflexion in the Concrete Mercury Intrusion Porosimetry Curve

Mercury intrusion porosimetry (MIP) has been widely used to evaluate the quality of concrete through the pore size distribution parameters. Two of these parameters are the critical pore diameter (Dcrit) and the percentage of the most interconnected net of pores compared to the total volume of pores. Some researchers consider Dcrit as the diameter obtained from the inflexion point of the cumulative mercury intrusion curve while others consider Dcrit as the diameter obtained from the point of abrupt variation in the same curve. This study aims to analyze two groups of concretes of varying w/c ratios, one cast with pozzolanic cement and another with high initial strength cement, in order to determine which of these diameters feature a better correlation with the quality parameters of the concretes. The concrete quality parameters used for the evaluations were (1) the w/c ratios and (2) chloride diffusion coefficients measured at approximately 90 days. MIP cumulative distributions of the same concretes were also measured at about 90 days, and Dcrit values were determined (1) from the point of abrupt variation and alternatively, (2) from the inflexion point of each of these plots. It was found that Dcrit values measured from the point of abrupt variation were useful indicators of the quality of the concrete, but the Dcrit values based on the inflexion points were not. Hence, it is recommended that Dcrit and the percentage of the most interconnected volume of pores should be obtained considering the point of abrupt variation of the cumulative curve of pore size distribution.

An approximate Hahn–Banach theorem for positively homogeneous functions

This note provides an approximate version of the Hahn–Banach theorem for non-necessarily convex extended-real valued positively homogeneous functions of degree one. Given p : X → R∪{+∞} such a function defined on the real vector space X, and a linear function defined on a subspace V of X and dominated by p (i.e. (x) ≤ p(x) for all x ∈ V), we say that can approximately be p-extended to X, if is the pointwise limit of a net of linear functions on V, every one of which can be extended to a linear function defined on X and dominated by p. The main result of this note proves that can approximately be p-extended to X if and only if is dominated by p∗∗, the pointwise supremum over the family of all the linear functions on X which are dominated by p.

Formação de professores : tecnologia educacional para o aluno deficiente visual

Dissertação de mestrado, Educação (Área de especialidade em Educação e Tecnologias Digitais), Universidade de Lisboa, Instituto de Educação, 2015

Was the ECB’s Comprehensive Assessment up to standard? CEPS Policy Brief No. 325, 10 November 2014

The Comprehensive Assessment conducted by the European Central Bank (ECB) represents a considerable step forward in enhancing transparency in euro-area banks’ balance sheets. The most notable progress since the previous European stress test has been the harmonisation of the definition of non-performing loans and other concepts as well as uncovering hidden losses, which resulted in a €34 billion aggregate capital-charge net of taxes. Despite this tightening, most banks were able to meet the 5.5% common equity tier 1 (CET1) threshold applied in the test, which suggests that the large majority of the euro-area banks have improved their financial position sufficiently that they should no longer be constrained in financing the economy. As shown in this CEPS Policy Brief by Willem Pieter de Groen, however, the detailed results provide a more nuanced picture: there remain a large number of the banks in the euro area that are still highly leveraged and in many cases unable to meet the regulatory capital requirements that will be introduced in the coming years under the adverse stress test scenario.

Russia in Crisis: Year One. OSW Report, January 2010

Economic conditions which had favoured Russia’s development suddenly changed in mid-2008. The Russian economy was hit, on the one hand, by a drastic slump in oil prices (which fell from nearly US$150 to US$50 between July 2008 and January 2009), and on the other by the outflow of investors (a net of US$130 billion of capital left Russia in the fourth quarter of 2008). Within several months, the financial crisis became an economic crisis affecting the entire economy. The financial reserves accumulated in times of prosperity (more than US$162 billion in the stabilisation funds and nearly US$598 billion in the currency and gold reserve) alleviated the negative impact of the crisis, although this failed to prevent the deep declines in macroeconomic indicators. Russia is one of the states most severely affected by the crisis. In the first half of 2009, its GDP fell by 10.4% compared to the same period in the previous year, while industrial production dropped by nearly 15%, and a decrease in investments of over 18% was reported. The poor economic performance has strongly affected the Russian budget, which reported a deficit for the first time in ten years in 2009. During the first year of the crisis (August 2008 – September 2009), Russia’s financial reserves were seriously reduced as a result of the government’s anti-crisis policy and interventions from the central bank: the reserve fund decreased by nearly 45% to US$76 billion, and the central bank’s reserves shrunk by nearly US$200 billion to US$409 billion. Meanwhile, however, the money in the National Welfare Fund, which had been intended almost entirely to subsidise the Pensions Fund between 2010 and 2015, rose almost three-fold (to US$90 billion). According to government forecasts, the money from the reserve fund is also supposed to be spent fully in 2010. The financial crisis has triggered a dynamic outflow of capital from the Russian market. So-called speculative capital was the first to demonstrate the lack of confidence in the Russian market. In the first half of 2009, the growth rate of long-term investments also decreased noticeably, although no spectacular withdrawal of direct investments from Russia has been observed. The economic crisis has also halted the foreign expansion of Russian private capital, while state-owned capital strengthened its position as an investor. Russia’s raw materials companies continue to be the main category of foreign investors; however, new technologies are gaining prominence as the second main direction of Russian investments.

The NASCAR phenomenon: Auto racing sponsorships and shareholder wealth

This study presents the first analysis of the impact of NASCAR sponsorship announcements on the stock prices of sponsoring firms. The primary finding of the study-that NASCAR sponsorship announcements were accompanied by the largest increases in shareholder wealth ever recorded in the marketing literature in response to a voluntary marketing program-represents a striking and unambiguous stock market endorsement of the sponsorships. Indeed, the 24 sponsors analyzed in this study experienced mean increases in shareholder wealth of over $300 million dollars, net of all of the costs associated with the sponsorships. A multiple regression analysis of firm-specific stock price changes and select corporate and sponsorship attributes indicates that NASCAR sponsorships with more successful racing teams, corporate (as opposed to product or divisional) sponsorships, and sponsorships with direct ties to the consumer automotive industry are all positively correlated with perceived sponsorship success, while corporate cash flow per share (a well-known proxy for agency conflicts within the firm) is negatively related with shareholder approval.

A COMUNICAÇÃO PARA A SAÚDE NA RESSOCIALIZAÇÃO E AUTONOMIA DO CIDADÃO IDOSO

O presente trabalho trata da importância da intersecção entre a comunicação para a saúde e a atividade física como fatores de ressocialização, de melhoria da qualidade de vida e da autonomia do segmento carente da terceira idade. Objetivo é verificar se a realização de atividades físicas em grupo, se a comunicação interpessoal advindas destas atividades e as trocas de informação sobre qualidade de vida, doença e saúde podem ser consideradas como fatores relevantes para a sociabilidade e a melhoria da saúde dos idosos carentes que participam dessas oportunidades de interação. Trata-se de uma pesquisa exploratória realizada por meio de aplicação de questionário, cujas entrevistas, foram realizadas pessoalmente, além de pesquisa bibliográfica. A principal conclusão é que embora idosos mereçam ter acesso a uma rede de apoio em saúde interdisciplinar, é necessária ainda, ressaltar a urgência em organização de serviços de atendimento a essa população e uma maior ênfase na comunicação voltada para os idosos.(AU)

DIRETOR DE ESCOLA: GERENTE OU EDUCADOR? POSSIBILIDADES E LIMITAÇÕES DO DESENVOLVIMENTO DA FUNÇÃO PEDAGÓGICA EM UMA ESCOLA PÚBLICA ESTADUAL PAULISTA

Há tempo, as dificuldades enfrentadas pelos diretores de escola da rede pública estadual de São Paulo constituem motivo de inquietação e impotência, pois estes têm seu trabalho engessado pela rotina burocrático-administrativa, a qual dificulta o desempenho das atividades pedagógicas. Este trabalho centra-se no estudo das possibilidades e limites no desenvolvimento da função pedagógica do Diretor de Escola, aliás, Gerente ou Educador? Nesta pesquisa utiliza-se dos documentos da Unidade Escolar, desde sua fundação em 1985 até 2007, para se entender o desenvolvimento da função de diretor de escola, neste duplo aspecto burocráticoadministrativo e pedagógico. Desta forma, foram abordadas as seguintes questões: quais são as solicitações e exigências da Secretaria de Estado da Educação de São Paulo (SEE-SP) e dos órgãos a ela subordinados em relação às atividades desenvolvidas cotidianamente pelo diretor de escola? Quais as incumbências objetivas que o diretor de escola tem que responder para a SEE-SP? A partir disso, quais são as possibilidades e os limites do diretor para desenvolver a função pedagógica no ambiente escolar? A hipótese aventada é que, o diretor de escola não consegue centrar-se no desenvolvimento das atividades pedagógicas em face do atendimento às exigências burocrático-administrativas da SEE-SP e dos órgãos a ela subordinados, os quais condicionam sua atividade profissional. Pretende-se com este estudo contribuir para o debate acerca da prática da gestão escolar e da reflexão da função e do papel do diretor de escola no processo de transformação econômico-político-social. A apresentação desta pesquisa está estruturada em três capítulos. As considerações finais apontam que o diretor de escola, devido ao grande número de solicitações e exigências de tarefas burocrático-administrativas, emanadas do poder central e de seus órgãos subordinados, vê comprometido o desempenho das funções pedagógicas.(AU)

EDUCAÇÃO E DITADURA MILITAR: RELATOS DA HISTÓRIA OFICIAL E A MEMÓRIA DE PROFESSORES (1964-1985)

A presente pesquisa propõe analisar o contexto educacional ocorrido no período da ditadura militar, buscando extrair aspectos históricos e educacionais referentes ao período (1964- 1985). Trata-se de uma pesquisa realizada com professores do antigo segundo grau da rede pública de ensino do Município de Santo André (S.P). Optou-se por entrevistar seis professores que atuaram durante esse contexto histórico. Para investigar, foi utilizada a abordagem histórica-metodológica de cunho qualitativo, elegendo a memória como fonte principal de estudo. Para tanto, recorreu-se às contribuições de Bosi (Memória e sociedade: lembranças de velhos, 1984), Thompson (A voz do Passado, 1992), Romanelli (História da Educação no Brasil, 1978), Freitag (Escola Estado e Sociedade, 1980), Góes (O golpe na Educação, 1996), Cunha (Educação e Desenvolvimento Social no Brasil, 1977), Cardoso (Para uma crítica do presente, 2001), Vieira (Estado e miséria social no Brasil, 1995), Minguili (Direção de Escola de 2º grau no Estado de São Paulo, 1984), Arelaro (A extensão do ensino básico no Brasil, 1988), Teixeira (Política e administração de pessoal docente, 1988), Hilsdorf (História da educação brasileira, 2005), Gadotti (Educação e poder, 2001), Germano (Estado militar e educação no Brasil, 1990), Saviani (Escola e democracia, 1986), Santos (Professoras em tempos de mudanças, 2003). A hipótese trabalhada centra-se em interpretar a postura dos professores que atuaram no período em questão, relativa ao regime político que se instalou no País durante esta época, e de que forma isso repercutiu no seu trabalho docente. Na análise do contexto político/social e educacional, recorreu-se à revisão que forneceram subsídios para compreender e explicitar a voz do professor.

CENTROS EDUCACIONAIS UNIFICADOS DE SÃO PAULO: IMPLEMENTAÇÃO E CONTINUIDADE NUMA NOVA GESTÃO POLÍTICA

Este estudo tem como objetivo verificar se a política educacional do CEU: Centro Educacional Unificado criado e implementado no governo Municipal de Marta Suplicy também apresentado como uma proposta contra-hegemônica de escola inclusiva e cidadã, ainda existe nesta atual administração. Apresenta e identifica os princípios do projeto CEU, bem como suas principais diferenças dentro de duas perspectivas políticas: uma progressista e outra mais conservadora. Com a transição da administração publica através da posse do prefeito eleito José Serra e continuada com o exercício do vice-prefeito Gilberto Kassab, os CEUs ficam sujeitos às mudanças técnico- administrativas e políticas, tornando necessária a análise da continuidade e da auto sustentabilidade destes complexos educacionais face ao alto investimento dos recursos públicos demandados em sua implementação. Apresenta-se um estudo bibliográfico sobre a política neoliberal em educação e também aos documentos oficiais da Rede Municipal de São Paulo. Por meio da pesquisa empírica com protagonista do projeto foram observadas as principais diferenças objetivando a análise do processo instituinte.

Genetic algorithms and investment strategies: A global perspective

The profitability of momentum portfolios in the equity markets is derived from the continuation of stock returns over medium time horizons. The empirical evidence of momentum, however, is significantly different across markets around the world. The purpose of this dissertation is to: (1) help global investors determine the optimal selection and holding periods for momentum portfolios, (2) evaluate the profitability of the optimized momentum portfolios in different time periods and market states, (3) assess the investment strategy profits after considering transaction costs, and (4) interpret momentum returns within the framework of prior studies on investors’ behavior. Improving on the traditional practice of selecting arbitrary selection and holding periods, a genetic algorithm (GA) is employed. The GA performs a thorough and structured search to capture the return continuations and reversals patterns of momentum portfolios. Three portfolio formation methods are used: price momentum, earnings momentum, and earnings and price momentum and a non-linear optimization procedure (GA). The focus is on common equity of the U.S. and a select number of countries, including Australia, France, Germany, Japan, the Netherlands, Sweden, Switzerland and the United Kingdom. The findings suggest that the evolutionary algorithm increases the annualized profits of the U.S. momentum portfolios. However, the difference in mean returns is statistically significant only in certain cases. In addition, after considering transaction costs, both price and earnings and price momentum portfolios do not appear to generate abnormal returns. Positive risk-adjusted returns net of trading costs are documented solely during “up” markets for a portfolio long in prior winners only. The results on the international momentum effects indicate that the GA improves the momentum returns by 2 to 5% on an annual basis. In addition, the relation between momentum returns and exchange rate appreciation/depreciation is examined. The currency appreciation does not appear to influence significantly momentum profits. Further, the influence of the market state on momentum returns is not uniform across the countries considered. The implications of the above findings are discussed with a focus on the practical aspects of momentum investing, both in the U.S. and globally.

Genetic Algorithms and Investment Strategies: A Global Perspective

The profitability of momentum portfolios in the equity markets is derived from the continuation of stock returns over medium time horizons. The empirical evidence of momentum, however, is significantly different across markets around the world. The purpose of this dissertation is to: 1) help global investors determine the optimal selection and holding periods for momentum portfolios, 2) evaluate the profitability of the optimized momentum portfolios in different time periods and market states, 3) assess the investment strategy profits after considering transaction costs, and 4) interpret momentum returns within the framework of prior studies on investors’ behavior. Improving on the traditional practice of selecting arbitrary selection and holding periods, a genetic algorithm (GA) is employed. The GA performs a thorough and structured search to capture the return continuations and reversals patterns of momentum portfolios. Three portfolio formation methods are used: price momentum, earnings momentum, and earnings and price momentum and a non-linear optimization procedure (GA). The focus is on common equity of the U.S. and a select number of countries, including Australia, France, Germany, Japan, the Netherlands, Sweden, Switzerland and the United Kingdom. The findings suggest that the evolutionary algorithm increases the annualized profits of the U.S. momentum portfolios. However, the difference in mean returns is statistically significant only in certain cases. In addition, after considering transaction costs, both price and earnings and price momentum portfolios do not appear to generate abnormal returns. Positive risk-adjusted returns net of trading costs are documented solely during “up” markets for a portfolio long in prior winners only. The results on the international momentum effects indicate that the GA improves the momentum returns by 2 to 5% on an annual basis. In addition, the relation between momentum returns and exchange rate appreciation/depreciation is examined. The currency appreciation does not appear to influence significantly momentum profits. Further, the influence of the market state on momentum returns is not uniform across the countries considered. The implications of the above findings are discussed with a focus on the practical aspects of momentum investing, both in the U.S. and globally.

Implementação da infra-estrutura e protocolo de comunicação para tratamento e disponibilização de dados do projeto ePoste

The study consists in the structure elaboration and the ePoste project communicationprotocol, which is a system of monitoring by wireless communication with the aim tosensor and act with one or many public lighting points, and also the treatment of data todetect the activity in the sensors located on the posts. Previously the communication withsensors were made in locus and when data collect was necessary or the performance inthe devices, the operator had to move until the net place. Accordingly, the purpose has theconcern to increase the system dynamic, achieving the possible integrations with the systemsalready available to the lighting management. The same technology of communicationbetween the sensors are considerate, using the ZigBee protocol running on the meshnet, the communication with this net is made be internet through a gateway by GPRS,device with two basics functionalities, which bypass for data and the firmware update inthe sensor. This functionality test of data management is being tested; integrate way withlocal net of sensors and the internet data server operates. The protocol developed, besidesincorporating the ZigBee, that it is formation of framework in lower level, where definesbeginning, size and errors check, as well as the communication of sensor with the concentrator,which it is encapsulated in ZigBee; also the protocol of upper level, where thatit is the names, it was developed a platform of service to meet GET and POST requestsbeneath HTTP protocol, this service is implemented in the data server, which availablethe communication with the clients systems, in case, lighting management systems.

Los políticos del progreso. Científicos en el gobierno y en el Partido Progresista (1833-1868)

La organización del Partido Progresista tiene una configuración abierta, que ensaya fórmulas de elecciones primarias y que con contará con dos núcleos: La minoría parlamentaria y una organización que será permanente desde 1846, en la que se distingue la Junta Central y la Comisión Directiva. Entre los políticos de la generación del progreso Francisco de Luxán será el primero de una nómina muy reducida de ministros con formación científico-técnica, y entre los dirigentes del Partido Progresista y de la Unión Liberal será también el único con formación científico-técnica.

La Comunità ebraica di Shanghai

The Jewish community in Shanghai was among the first to settle in the Treaty Ports which were opened after the Opium war. Jewish population grew until the rendition of the foreign settlements to the Chinese authorities, and its history broadly consists of three periods.The first Jews came to Shanghai in the XIX century were sephardits from Iraq and India. Among those emigrated to Shanghai following the expansion of the British commerce in China were such famous families as Sassoons, Hardoons and Kadoories.The second wave arrived with the White Russians exodus after the October Revolution; they were askanzits Jews who fled from pogroms and the Russian civil war. The third wave were Jews fleeing from central Europe in the 1930s. This group was the largest of the three.The first settlers saw Shanghai as a port of opportunities, while the others came there seeking refuge.The interwar Shanghai could offer protection and a temporary place of residence for Jewish people. In the 1920s and 1930s Jews coming to Shanghai were helped by local Jewish associations, which supported them in the search for accommodations and jobs. This net of associations was effective until WWII. The war, however, made them face increasing number of contraints. In this constrained situation we should remember that the Japanese authorities, occupying the International Settlement, imposed a ban for new Jewish arrivals to settle in the Hongkou district; while the French authorities under the Vichy government imposed a complete ban on Jewish residents in their concession. Finally, the Jewish immigration to Shanghai had stopped completely in 1942, because there were no more ways to get there.Japanese authorities, however, were not interested in applying the racial laws as their priority lay in the conquest of China. And although the Jews were in an enemy's territory, they were not persecuted. In fact, when the war was over they left Shanghai directly to the United States and Israel.