985 resultados para DECIMAL NUMERATION


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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Pós-graduação em Ciência da Informação - FFC

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Although the economies of Latin America and the Caribbean grew more slowly in 2011 than in 2010, there were some improvements on the employment front. Workers benefited from the region’s satisfactory economic performance in an increasingly complex international setting. The unemployment rate fell from 7.3% in 2010 to 6.7% in 2011 thanks to a halfpercentage- point gain in the urban employment rate. Both rates are at levels that have not been seen for a long time. The proportion of formal jobs with social benefits rose as well, and underemployment declined. The average wage and the minimum wage both increased in real terms, albeit only moderately. Economic performance and the employment situation varied widely among the subregions. The unemployment rate dropped by 0.6 percentage points in South America but 0.4 percentage points in the countries of the northern part of Latin America. In the countries of the Caribbean, the employment rate was up by 0.2 percentage points. The data show that substantial labour market gaps and serious labour-market insertion issues remain. This is especially the case for women and young people, for whom unemployment rates and other labour indicators are still unfavourable. The second part of this report looks at whether the fruits of economic growth and rising productivity have been distributed equitably between workers and companies. Between 2002 and 2008 (the most recent expansionary economic cycle), wages as a percentage of GDP fell in 13 of the 21 countries of the region for which data are available and rose in just 8. This points to redistribution that is unfavourable to workers, which is worrying in a region which already has the most unequal distribution of income in the world. Underlying this trend is the fact that, worldwide, wages have grown less than productivity. Beyond the ethical dimension of this issue, it jeopardizes the social and economic sustainability of growth. For example, one of the root causes of the recent financial crisis was that households in the United States responded to declining wage income by borrowing more to pay for consumption and housing. This turned out to be unsustainable in the long run. Over time, it undermines the labour market’s contribution to the efficient allocation of resources and its distributive function, too, with negative consequences for democratic governance. Among the triggers of this distributive worsening most often cited in the global debate are market deregulation and its impact on financial globalization, technological change that favours capital over labour, and the weakening of labour institutions. What is needed here is a public policy effort to help keep wage increases from lagging behind increases in productivity. Some countries of the region, especially in South America, saw promising developments during the second half of the 2000s in the form of a positive trend reversal in wages as a percentage of GDP. One example is Brazil, where a minimum wage policy tailored to the dynamics of the domestic market is considered to be one of the factors behind an upturn in the wage share of GDP. The region needs to grow more and better. Productivity must grow at a steady pace, to serve as the basis for sustained improvements in the well-being of the populace and to narrow the gap between the economies of Latin America and the Caribbean and the more advanced economies. And inequality must be decreased; this could be achieved by closing the productivity gap between upgraded companies and the many firms whose productivity is low. As set out in this report, the region made some progress between 2002 and 2010, with labour productivity rising at the rate of 1.5% a year. But this progress falls short of that seen in other regions such as Sub-Saharan Africa (2.1%) and, above all, East Asia (8.3%, not counting Japan and the Republic of Korea). Moreover, in many of the countries of the region these gains have not been distributed equitably. Therein lies a dual challenge that must be addressed: continue to increase productivity while enhancing the mechanisms for distributing gains in a way that will encourage investment and boost worker and household income. The Economic Commission for Latin America and the Caribbean (ECLAC) and the International Labour Organization (ILO) estimate that the pace of economic growth in the region will be slightly slower in 2012 than in 2011, in a global economic scenario marked by the cooling of several of the main economic engines and a high degree of uncertainty concerning, above all, prospects for the euro zone. The region is expected to continue to hold up well to this worsening scenario, thanks to policies that leveraged more favourable conditions in the past. This will be felt in the labour markets, as well, so expectations are that unemployment will edge down by as much as two tenths of a decimal point.

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Pós-graduação em Engenharia e Ciência de Alimentos - IBILCE

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Esta pesquisa intitulada Educação Matemática, Cultura Amazônica e Prática Pedagógica; à Margem de um Rio, tem como objetivo analisar a prática pedagógica de uma professora que aborda diversos conteúdos matemáticos, a partir da Cultura Amazônica em uma escola pertencente a uma das ilhas de Belém do Pará. A parte empírica deste trabalho aconteceu no período de 6 meses na Escola do Combu, localizada na Ilha do Combu-PA durante o acompanhamento das turmas de Educação Infantil e do Ciclo Básico. Esta pesquisa justifica-se pela busca da compreensão da necessidade de aproximação entre as operações matemáticas e o cotidiano imaginário dos alunos ribeirinhos, a partir da construção de suas casas, cascos (embarcação feita artesanalmente em troco de árvore), canoas, matapis (armadilhas para pegar camarão, feita com fibra da mata), tupés (tapetes para secagem do cacau feito de fibra da mata), redes, brinquedos, cestos. As concepções metodológicas estão pautadas nos princípios da pesquisa qualitativa, baseada na abordagem etnográfica, a fim de sistematizar conhecimentos sobre necessidades e dificuldades da interação entre a Matemática escolar e a cultura local. A prática pedagógica da professora em questão demonstra preocupações em aproximar o ensino de Matemática à diversidade cultural, peculiar ao local, a partir de aulas construídas na parceria dos saberes tradicionais como a tessitura de tupés, para exploração de elementos geométricos, uso de matapis como material didático para a construção de sistema métrico decimal entre outros. É possível indicar que as vivências utilizadas e resignificadas, através de registros e análises sob o olhar da Educação Matemática contribuem para o reconhecimento da influência da Cultura Amazônica, no processo ensino-aprendizagem da Matemática escolar.

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No ensino de habilidades monetárias os procedimentos de escolha com o modelo (MTS) e de escolha com o modelo com resposta construída (CRMTS) têm se mostrado efetivos. Entretanto, há uma controvérsia sobre a importância dos pré-requisitos. O experimento 1 teve por objetivo verificar o efeito de um ensino de MTS e CRMTS sobre a equivalência monetária em crianças surdas com diferentes repertórios matemáticos. Participaram 10 crianças matriculadas em uma Unidade de Ensino Especializada distribuídas em dois grupos experimentais: Crianças com maior repertório matemático (Grupo I) e crianças com menor repertório matemático (Grupo II). As sessões foram realizadas na referida instituição. Um microcomputador foi usado com um software (REL 5.3.3 for Windows). Inicialmente, os participantes foram submetidos a pré-testes e a um pré-treino de identidade. Em seguida, ao ensino de relações condicionais via MTS entre valores monetários em LIBRAS e numerais decimais (AB), valor monetário em LIBRAS e figuras de moedas (AC) e a valor monetário em LIBRAS e figuras de notas (AD), seguidos dos testes de simetria e transitividade. Nos dois grupos, houve emergência de relações para a maioria dos participantes. Posteriormente, houve ensino via CRMTS de figuras de notas e numerais decimais (DB‟), seguido de testes de simetria e transitividade. Nos testes houve variabilidade no responder em ambos os grupos. Pós-testes e testes de manutenção mostraram desempenho consistente com o treino. O experimento 2 teve por objetivo replicar os resultados do experimento 1 verificando se modificações no ensino produziria equivalência monetária. Participaram 3 crianças surdas. O ambiente experimental, materiais e equipamentos foram os mesmos. O procedimento foi similar ao procedimento utilizado no experimento 1, mas com a introdução de algumas fases experimentais: 1) tentativas randomizadas de ensino, ensino de componentes numéricos e pré-treino de CRMTS. Os resultados indicam emergência de relações para os três participantes em MTS e emergência de poucas relações em CRMTS. Em ambos os experimentos a complexidade da tarefa foi uma das possíveis explicações do desempenho e os pré-requisitos não interferiram na a aprendizagem deste tipo de tarefa.

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Pós-graduação em Odontologia - FOAR

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This article analyzes the specific features and processes of indexing and classification performed in school libraries to process and retrieve information from their collections. Subject languages used in Spanish, Portuguese and Brazilian Portuguese school libraries are also analyzed. To achieve this goal, the concept of school library was analyzed, its function was studied and the techniques and tools that allow the information organization were examined. Among the tools, we studied the Subject Headings Lists for children and juveniles’ books and the Subject Headings List for public libraries, the Universal Decimal Classification System (paperback edition) or the classification by fields of interest and specialized thesauri like the Tesauro de la Educación UNESCO-OIE and the TesauroEuropeo de la Educación.

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This study explores, in 3 steps, how the 3 main library classification systems, the Library of Congress Classification, the Dewey Decimal Classification, and the Universal Decimal Classification, cover human knowledge. First, we mapped the knowledge covered by the 3 systems. We used the “10 Pillars of Knowledge: Map of Human Knowledge”, which comprises 10 pillars, as an evaluative model. We mapped all the subject-based classes and subclasses that are part of the first 2 levels of the 3 hierarchical structures. Then, we zoomed into each of the 10 pillars and analyzed how the three systems cover the 10 knowledge domains. Finally, we focused on the 3 library systems. Based on the way each one of them covers the 10 knowledge domains, it is evident that they failed to adequately and systematically present contemporary human knowledge. They are unsystematic and biased, and, at the top 2 levels of the hierarchical structures, they are incomplete.

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We analysed the written statements of libraries that have adopted the bookstore model for coherence or lack of coherence with common public library guidelines. We used a text-based Foucauldian genealogical discourse analysis to investigate the written statements used by libraries that have adopted BISAC and other aspects of the bookstore model. Libraries adopting bookstore models such as BISAC should consider the potential consequences of adopting a commercial model for a public entity. This paper has practical implications for libraries considering adopting any aspect of the bookstore model, but especially the BISAC system, as it examines the potential benefits and drawbacks of the bookstore model popular in some libraries with respect to the purposes and goals of public libraries. BISAC application in libraries seems to be part of a trend of applying commercial practices, values and terminology in libraries, perhaps not with the purpose of replacing libraries with bookstores, but with the aim for both systems to converge into a new kind of commercial entity and context. The influence of one kind of system over the other does not seem to be totally reciprocal, since the application of library practices, values and standards in bookstores has not had the same effects and resonance as has occurred in the opposite direction.

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This research aims at examining the relationship between the performance of elementary school students Cycle I in problem solving and attitudes toward mathematics. For this, a research was conducted at a state school in the city of Bauru which was selected for convenience. Participants were randomly selected consisting of 75 students, of whom 21 were third years and 57 were of three classes of fifth year. The instruments used for data collection were: a informative questionnaire to characterize the students in age, grade, favorite subjects and the least liked, among others, an attitude scale, Likert type, to examine the attitudes toward mathematics; a interviews with 11 selected students according to scores on the attitudes and mathematical problems to be solved through the method of thinking aloud. The results showed that the major difficulties encountered by students in solving problems were: to understand the problems, formalizing the reasoning, recognize in the problem the algorithms needed for its resolution, make calculations with decimal numbers, do combinatorics, using the sum of equal portions instead of multiplying, self-confidence and autonomy in what he was doing, and others; participants with positive attitudes towards mathematics showed greater confidence to solve problems as well as a greater understanding on what was required by them, but were not detected significant relation between the attitudes and performance, since it was unfavorable

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Pós-graduação em Matemática em Rede Nacional - IBILCE

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Pós-graduação em Matemática em Rede Nacional - IBILCE