86 resultados para Séries aritméticas
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Pós-graduação em Psicologia do Desenvolvimento e Aprendizagem - FC
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Pós-graduação em Ciências Cartográficas - FCT
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Data from reference stations are widely used in GNSS (Global Navigation Satellite System) positioning, and can be used in relative positioning or network-based positioning concept. Positioning accuracy will be directly influenced by errors in signals collected in these stations. In this paper, it is aimed at evaluating these data quality using temporal series of multipath index MP1 and MP2. A statistical study of temporal series with 7 years of daily observations related to 7 stations from RBMC (Rede Brasileira de Monitoramento Contínuo) was accomplished. In order to investigate trends and seasonality a linear regression model, correlograms, and Fourier periodograms were used. We also used a harmonic adjust to identify peaks on temporal series. At last, the possible causes of seasonality found in some stations were discussed. It was also possible to identify peaks in MP values of March and October months (mainly in stations located near geomagnetic equator).
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Pós-graduação em Ciências Cartográficas - FCT
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This study aims to characterize and to compare the students writing difficulties from 1st to 4th grades of public education. The study included 80 students divided into GI (20 students from 1st grade), GII (20 students from 2nd grade), GIII (20 students from 3rd grade) and GIV (20 students from 4th grade). The procedure applied was the Assessment of Learning Difficulties in Writing. The results revealed a median learning difficulty in students of GI (greater average of errors in writing). The increasing of schooling determine a decrease of the average of these errors from GI to GIV. The study revealed that the students are still in a process of construction and appropriate of the writing system, since the average of writing errors decreased as the school level increased.
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Working with adult students who attend literacy rooms has been set a challenge for educators, especially with regard to issues of learning mathematics. This work of course completion intention was to investigate the process of construction of arithmetic operations in mathematics from the perspective of the students themselves. Thus specific objectives were to investigate how these students face simple operations that can do this automatically on a daily basis, but not always systematized in the classroom; how these students think and communicate their ideas to the mental operation of the paper record. To this end we chose a qualitative research approach with characteristics of case study, conducted in a room of Youth and Adult participants with three ladies. The data collection occurred through the application of a semi-structured, audio recorded and later transcribed, which issues the verbalization sought and a description of how to give students the learning process of some mathematical content. The results showed that students bring with them skills, cultures and values to the classroom and that these are the basis for understanding the content. The teacher of adult education must take into consideration everything that the student brings to the classroom, their experiences, their history and culture, thus questioning the real world, so they can understand math in a way closer to their daily lives
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Este trabalho visa explorar o ensino da matemática por meio da análise de livros didáticos do aluno e do professor entre as décadas de 1960 e 1980, focando o 1º ano do ensino primário, atual fundamental I. Iniciamos por uma revisão bibliográfica sobre o contexto histórico, desde a introdução do livro na sociedade até a utilização do mesmo para o ensino na área da matemática. A pesquisa tentará retratar brevemente, a história da educação e da educação matemática no Brasil, as diferentes concepções de ensino da época em questão, ou seja, entre as décadas de 1960 e 1980, onde houve o ápice e o declínio do Movimento da Matemática Moderna. Por fim, este trabalho buscará explorar de maneira panorâmica, se ocorreram mudanças nos conteúdos no ensino da matemática por meio da análise de livros didáticos do aluno e do professor no 1º ano das séries iniciais e relatar quais foram essas mudanças. Utilizar-se-á como metodologia a análise de livros didáticos como um objeto pertencente à história cultural, com um enfoque na análise sócio-histórica, na análise formal ou discursiva e, finalmente, interpretação/ reinterpretação.
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This study aimed to review the publications in the area of Education Physics that has contributed to Scientific Literacy and STS - Science , Technology and Society , with students of elementary school in Basic Education , looking for understand the importance of an education that aims the formation of critical citizens, in opposition to passive recipients of technological influences of a modern society , but which are able to understand and reflect the importance and influence of science and technology in political, social and environmental to society . In this context , the Physics, is one of the areas of natural sciences with direct implications in daily life , we believe in the importance of introducing physical concepts in science education since the early years of basic education , either as a approach playful , experiment, study of books , magazines , papers , etc. . , so that the knowledge about physics can be built through experience and the analysis of daily phenomena, instead of only being addressed in the last three years of teaching average basic education
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With the increase of stakeholders and consequently increase of amount of nancial transaction the study of news investment strategies in the stock market with data mining techniques has been the target of important researches. It allows that great historical data base to be processed and analysed looking for pattern that can be used to take a decision in investments. With the idea of getting pro t more than the real indexs' gain, we propose a strategy method of transactions using rules built by algorithm classi cation. For that, diary historical data of Ibovespa index and Petrobras stocks are organized and processed to nding the most important attribute that act decisively when taking a investment decision.To test the accuracy of proposed rules, a non real portfolio management is created, showing the decisions' performance over the real index and stocks' performance. Following the proposed rules, the results show that the strategy of investment give me back a high return that Stock market's return. The exclusive characteristics of algorithms maximize the gain inside the analysed time allowing to determine the techniques' return and the number of the days necessary to double the initial investment. The best classi er applied on the time series and its use on the propose investments strategy will demand 104 days to double the initial capital