89 research outputs found

    AS DIFICULDADES NO ENTENDIMENTO PEDAGOGICO RELACIONADO À TRANSIÇÃO DOS CONCEITOS ARITMÉTICOS PARA OS ALGEBRICOS

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    Este trabalho apresenta um estudo relativo às dificuldades encontradas na passagem da matemática aritmética para a algébrica ao nível de ensino fundamental, em uma escola particular situada na cidade de Lages (SC). Esta pesquisa foi desenvolvida com um grupo de alunos, de diferentes turmas, analisando-se as dificuldades encontradas com professores titulares distintos da instituição de ensino. Este trabalho teve como foco refletir sobre como a álgebra está sendo encarada pelos estudantes e com o auxílio de atividades lúdicas realizadas, fazer com que o educando compreenda o significado da simbologia usada como ferramenta auxiliar em cálculos matemáticos mais sofisticados, assim minimizando as reações negativas de uma matemática algébrica mecanicista sem significância no seu processo. Com a aplicação desta pesquisa foi possível mostrar aos alunos a importância de se comunicar matematicamente com o auxílio da álgebra com seus respectivos símbolos tornando-a prazerosa e significativa

    A utilização de Resolução de Problemas como estratégia pedagógica no ensino da Matemática no Ensino Básico

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    Problemas matemáticos estão inseridos no cotidiano de todos nós. Eles apresentam grande importância por contribuir na formação da autonomia dos alunos, na construção do raciocínio e interpretação. Na escola, a resolução dos problemas matemáticos têm, além de outras funções, a de despertar a curiosidade dos alunos. Os momentos destinados à resolução deles exigem reflexão, planejamento e definição dos objetivos. Acontece que, muitas vezes, o que os professores tratam como problema, na verdade, é apenas um exercício. A presente pesquisa teve como objetivo investigar a capacidade do aluno na utilização da Resolução de Problemas como proposta didática ou metodológica no Ensino Básico, na medida em que pode trazer melhorias no rendimento escolar, assim como na concepção dos professores em relação a este método. Por meio de atividades de resolução de problemas, foi possível constatar que após intervenção, os alunos desenvolveram maior afeição por este tipo de atividade, o que resultou em um aumento no empenho para encontrar as soluções das situações propostas. Constatou-se que o método da resolução de problemas como proposta didática, quando realizado de maneira correta, promove notável compreensão por parte dos alunos, o que influencia no seu melhor rendimento escolar

    Analysy of the financial statements: a performance valuation of the brazilian companies by the private equity based on the information disclosured

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    Private equity analyze the financial statements in an objective and practical way, focusing on the quantitative information and, frequently, are surprised by non-recorded situations, but only disclosed ones that affect the profitability of its investments. Therefore, the objective of this study was to develop a performance analysis structure of the Brazilian companies, based on the literature, corroborated by the information disclosed in their financial statements in order to supporting the private equity investors to estimate the value of an entity. It was made a bibliographic research, aiming to identify the relevant elements to valuate a company, what resulted in the developed referred structure. It was performed a cross check between the terms presented in the performance analysis structure and the content presented in the financial statement of the four companies registered in the Bovespa Mais, part of the Clean Energy and Information Technology segments. Observed a high level index of presence of the items part of the developed structure in the financial statements of the analyzed companies, which corroborate the possibility of using such structure in the process of estimating the value of a company

    Mortality and pulmonary complications in patients undergoing surgery with perioperative SARS-CoV-2 infection: an international cohort study

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    Background: The impact of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) on postoperative recovery needs to be understood to inform clinical decision making during and after the COVID-19 pandemic. This study reports 30-day mortality and pulmonary complication rates in patients with perioperative SARS-CoV-2 infection. Methods: This international, multicentre, cohort study at 235 hospitals in 24 countries included all patients undergoing surgery who had SARS-CoV-2 infection confirmed within 7 days before or 30 days after surgery. The primary outcome measure was 30-day postoperative mortality and was assessed in all enrolled patients. The main secondary outcome measure was pulmonary complications, defined as pneumonia, acute respiratory distress syndrome, or unexpected postoperative ventilation. Findings: This analysis includes 1128 patients who had surgery between Jan 1 and March 31, 2020, of whom 835 (74·0%) had emergency surgery and 280 (24·8%) had elective surgery. SARS-CoV-2 infection was confirmed preoperatively in 294 (26·1%) patients. 30-day mortality was 23·8% (268 of 1128). Pulmonary complications occurred in 577 (51·2%) of 1128 patients; 30-day mortality in these patients was 38·0% (219 of 577), accounting for 81·7% (219 of 268) of all deaths. In adjusted analyses, 30-day mortality was associated with male sex (odds ratio 1·75 [95% CI 1·28–2·40], p\textless0·0001), age 70 years or older versus younger than 70 years (2·30 [1·65–3·22], p\textless0·0001), American Society of Anesthesiologists grades 3–5 versus grades 1–2 (2·35 [1·57–3·53], p\textless0·0001), malignant versus benign or obstetric diagnosis (1·55 [1·01–2·39], p=0·046), emergency versus elective surgery (1·67 [1·06–2·63], p=0·026), and major versus minor surgery (1·52 [1·01–2·31], p=0·047). Interpretation: Postoperative pulmonary complications occur in half of patients with perioperative SARS-CoV-2 infection and are associated with high mortality. Thresholds for surgery during the COVID-19 pandemic should be higher than during normal practice, particularly in men aged 70 years and older. Consideration should be given for postponing non-urgent procedures and promoting non-operative treatment to delay or avoid the need for surgery. Funding: National Institute for Health Research (NIHR), Association of Coloproctology of Great Britain and Ireland, Bowel and Cancer Research, Bowel Disease Research Foundation, Association of Upper Gastrointestinal Surgeons, British Association of Surgical Oncology, British Gynaecological Cancer Society, European Society of Coloproctology, NIHR Academy, Sarcoma UK, Vascular Society for Great Britain and Ireland, and Yorkshire Cancer Research
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