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Artigo de eventoA different statistical approach aiming at EEG parameter investigation for brain machine interface use(2014-03-06) DE CASTRO, M. C. F.; Fábio GerabA lot of effort has been made to investigate EEG features that could better represent signal characteristics. The results are usually based on the best mean recognition rates and statistical analysis is done only when different methods are compared. In this work, we propose a new approach that applies multiple rate intercomparisons based on large samples aiming at detecting differences among treatments in order to recognize their importance for the classification rates. Ten frequency band compositions expressed by power spectral density averages were extracted from 8 EEG channels during 4 motor imageries, and spatial feature selections were also considered during the recognition process. Classification rate in large samples can be represented by a normal distribution and, for multiple rate inter-comparisons, the level of significance was corrected based on the Bonferroni Method. The variables were considered to be independents and the test was performed as non paired samples in a very conservative approach. The results showed that there are significant differences among cases of spatial feature selection and thus the considered electrodes are important parameters. On the other hand, considering or not the Delta and Theta bands along with different arrangements for Gamma band resulted in no significant difference. Copyright © 2014 SCITEPRESS - Science and Technology Publications. All rights reserved. ArtigoAnálise das interações curriculares em um curso de ciência da computação: buscando subsídios para aprimoramento curricular(2014) GERAB, Fábio; BUENO, I. A. M.; GERAB, I. F. da S.O processo de mudança curricular deve estar alicerçado em evidências institucionais de mudanças. Neste sentido, o presente trabalho objetiva caracterizar e discutir as interações curriculares em um curso de Ciência da Computação a partir do desempenho dos alunos egressos. Os dados de desempenho foram submetidos à Análise de Componentes Principais e à Análise por Agrupamento Hierárquico para identificar eventuais correlações entre: o rendimento nas distintas disciplinas, a influência da classificação no exame de ingresso e o tempo necessário para a conclusão do curso. Observou-se a associação de disciplinas em nove grupos, com destaque para o agrupamento rotulado de “Básicas”, que interfere na duração do curso. Notou-se que o desempenho no vestibular perde sua importância no decorrer do curso. Compreender estas relações pode contribuir para a melhoria do curso de Ciência da Computação e favorecer o bom aproveitamento do aluno. ArtigoUma análise das normatizações nacionais do século 20 para os cursos de formação inicial de professores de matemática da educação básica(2016) PEREIRA, Marcelo Dias; PIETROPAOLO, R. C.O artigo tem comoobjetivo apresentar uma análise das resoluções e pareceres que normatizaram os cursos de formação de professores para a Educação Básica, do século 20, especialmente os documentos relacionados aos cursos de formação inicial para lecionar Matemática nos anos finais do Ensino Fundamental e no Ensino Médio.Trata-se, portanto, de uma análise documental, de cunho qualitativo, na qual se pôde ter uma compreensão da trajetória da formação de professores no referido período, com vistas a analisar essa formação nos dias atuais. ArtigoAnalysis of sustainability reports and quality of information disclosed of top brazilian companies(2013) CHING, Hong; GERAB, Fábio; TOSTE, Thiago HenriqueThe objective of this research is to examine the quality of information disclosed from a sample of Brazilian listed companies, using a multidimensional construct based on economic, environmental and social dimensions of sustainability. The research design combines both quantitative and qualitative methods. The qualitative approach is used in the content analysis procedure and the quantitative is employed for statistical analysis. The target population consists of top 36 sustainable companies (ISE) and 24 with corporate governance practices (NM) in 2011. We find that 37% of the companies achieved score above 0.5; 30% between 0.26 and 0.5 and 33% scored below 0.25, being score zero the worst and one the best score. The best company scored 0.896 and the worst of the 60 companies scored 0.0167. Overall our statistical results confirm that ISE companies tend to disclose more information and in a more adequate way than NM, and in general, the companies are reporting the content in all the three dimensions with same quality level. Furthermore, companies from Infrastructure sector present better quality content reported when compared to Service companies. We conclude that a good sustainability report is directly related to the good content in all the tree dimensions, regardless the economic sector and these reports still have a big room for improvement, which echoes within the literature analyzed. Companies need to disclose their information in a more integrated way, addressing sustainability issues under the scope of business strategy. ArtigoAs Atitudes em Relação à Matemática e O Desempenho em Cálcluo Diferencial e Integral de Alunos de Engenharia(2012) JESUS, M. A. S.;JESUS, MARCOS ANTONIO SANTOS; TACACIMA, J. ArtigoAvaliação da Disciplina de Formação Didático Pedagógica em Saúde: a óptica do pós-graduando(2014) GERAB, I. F. S.; BATISTA, S. H. S. S.; SONZOGNO, M. C.; YAMASHIRO, C. G.; GERAB, F.;GERAB, FÁBIO; RUIZ-MORENO, L. ArtigoCharacterization of heterogeneities in grain size by network analysis(2017-05-01) DUTRA, J. C.; DE OLIVEIRA, T. E.© 2017 Elsevier Inc.Heterogeneities in grain size are very common, mainly when phenomena such as abnormal grain growth is taking place. A new method to measure them is put forward. It is based on network analysis in which an adjacent matrix is built from a microstructure consisting of single-phase grains. In this approach, grains are nodes whereas their boundaries are ties. Both the degree centrality of nodes and the degree centrality of group of grains were calculated as well as their significance and deviations. Results have shown that the present method is capable to show significant differences in these properties, one order of magnitude, even if the microstructures are slightly heterogeneous. Methods involving statistical and non-linear regression analysis are also presented and compared with the new one and it is shown that these methods have more arbitrariness than the new one. ArtigoA divulgação de Conhecimento Científico no final do século XVIII e início século XIX: Análise, Apontamentos, Reflexões(2018) TRENTIN, PAULO HENRIQUE ArtigoA divulgação de conhecimentos científicos no Brasil entre os séculos XVIII e XIX : comentários e reflexões(2019-07-07) TRENTIN, Paulo HenriqueEste texto comenta e apresenta reflexões em relação aos argumentos apresentados por autores, tradutores e outros responsáveis pela divulgação dos conhecimentos científicos no Brasil, do final do século XVIII ao início do século XIX. Selecionamos para a análise as seguintes obras: Elementos de Astronomia, 1813, Tratado Elementar de Mechanica, 1812, Tratado de Optica, 1813, Tratado Elementar de Physica tomo II, 181 e o Jornal O Patriota, 1813-1814. A análise identifica algumas expectativas manifestadas pelos autores, tradutores e editores dos textos selecionados, como motivações sociais, políticas ou econômicas. Especificamente, destaca-se a relevância de anseios, desejos e expectativas manifestações dos autores dos textos para além da influência do ambiente social, político e econômico ao qual pertenciam. O estudo nos permitiu considerar que não há resposta definitiva acerca das ambições ou expectativas motivaram a divulgar conhecimentos científicos. Porém, no que se refere à “utilidade” que atribuíam ao conhecimento divulgado, foi possível tecer algumas considerações que deverão contribuir para a historiografia acerca do tema. ArtigoEducation, school and school mathematics: meanings of the basic education mathematics teachers*(2021-01-05) GODOY, E. V.; Fábio Gerab; SANTOS, V. D. M.© 2021. All Rights Reserved.The mathematics teacher initial training has been the subject of discussion in the governmental spheres and in the Brazilian Societies of Mathematical Education and of Mathematics. As a consequence of this, we notice advances in some critical points, among which stands out - the excess of academic mathematics disarticulated from the school mathematics; and - the approximation of the mathematics education theoretical-methodological trends with the mathematics undergraduate courses curricular organization. However, there are still absent the conversations involving the different and varied dimensions that interfere in the teaching and learning process of school mathematics; and the different curriculum theories. As a result, the neutrality of mathematical knowledge and the excessive concern with the normative dimension of the curriculum continue being protagonists in the mathematics teacher initial training. In this sense, this article aimed to investigate aspects related to the perception and understanding of basic education mathematics teachers about the school subjects, the school, the school education and about being a math teacher. Methodologically, it is included in a quali-quantitative research approach, in which, in order to achieve the project's objectives, a field research, through a questionnaire available in the “Google docs”, was carried out with the public network mathematics teachers from Sao Paulo state. Theoretically, it was based on studies about curriculum theories. It was tangible that the collaborating teachers are still very attached to the normative dimension of the curriculum, always prioritizing what to teach, how to teach and how to evaluate, without worrying about other dimensions (cultural, social, political) that interfere in the curriculum organization.of the school mathematics. ArtigoFine Mode Aerosol Composition in Three Long Term Atmospheric Monitoring Sampling Stations in the Amazon Basin(1994) GERAB, F.;GERAB, FÁBIO; ARTAXO, P; YAMASOE, M A; MARTINS, J V Artigo de eventoGood codes from metacyclic groups(2019) Samir Assuena; MILIES, C. P.© 2019 American Mathematical Society.In this paper, we consider semisimple group algebras Fq G of split metacyclic groups over finite fields. We construct left codes in Fq G in the case when the order G is pm ℓn, where p and ℓ are different primes such that gcd(q, p, ℓ) = 1. ArtigoGood codes from metacyclic groups II(2022-02-01) Samir Assuena© 2022 World Scientific Publishing Company.In this paper, we consider semisimple group algebras qG of split metacyclic groups over finite fields. We construct left codes in qG in the case when the order G is pmâ.,"n, where p and â.,"are different primes such that gcd(q,p,â.,") = 1 extend the construction described in a previous paper, determine their dual codes and find some good codes. ArtigoGroup algebras of metacyclic groups over finite fields(2017) Assuena S.; Milies C.P.© 2016, Instituto de Matemática e Estatística da Universidade de São Paulo.In this paper, we consider semisimple group algebras FqG of non abelian split metacyclic groups over a finite field. We give conditions for them to have a minimal number of simple components and find the primitive central idempotents of FqG in the case when the order G is equals pmℓn, where p and ℓ are different prime numbers. Artigo de eventoMethods and concepts for elaborating a decision aided tool for optimizing healthcare medicines dispatching flows(2019-06-24) PINHEIRO, J. C.; DOSSOU, P.-E.; João Chang Junior© 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)Globalization and new technologies are causes of the development of industry 4.0 concepts. Nowadays, Industry is becoming increasingly technological, machines are reaching spaces previously destined in factories to humans. Indeed, industry 4.0 concepts based on scientific, technological, and organizational concepts & tools (Internet of thing, RFID, Cobots, decision aided tools) and including sustainability could be used in different activity sectors. Healthcare sector is being transformed by new technologies and complex problems of this sector are solved by insisting on new technological parameters. FEI and Icam engineering schools are collaborating on healthcare logistics & transport area. The idea is to use the previous approach being elaborated for industrial companies to improve healthcare logistics and transport domain (Healthcare logistics 4.0). This paper presents concepts and tools (healthcare logistics 4.0) for solving real healthcare logistics problems. The approach elaborated is hybrid (combination of experimentation for acquiring real data and design for elaborating concepts and methods required for developing an adapted problem-solving tool). The decision aided tool is elaborated by using formalisms of artificial intelligence (such as expert systems, machine learning, multi-agent systems) in order to optimize medicine dispatching flows in a hospital. After describing healthcare logistics dispatching problems, a literature review will be presented for choosing concepts and formalisms that could be for developing the new decisional tool. Then, an example will be given for illustrating concepts elaborated. ArtigoNúcleo, Imagem e Composição de Transformações Lineares: uma abordagem gráfica desenvolvida em ambiente computacional(2018) KARRER, M.; SANTOS, R. C. M.