Classical Systems
Mostrando 1-12 de 356 artigos, teses e dissertações.
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1. ON A NEW APPROACH TO PEIRCE’S THREE-VALUE PROPOSITIONAL LOGIC
Abstract In 1909, Peirce recorded in a few pages of his logic notebook some experiments with matrices for three-valued propositional logic. These notes are today recognized as one of the first attempts to create non-classical formal systems. However, besides the articles published by Turquette in the 1970s and 1980s, very little progress has been made toward
Manuscrito. Publicado em: 2022
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2. Evaluation of sediment contamination by urban sewage in a stretch of Capibaribe River, Pernambuco, Brazil
Anthropic activities are responsible for the increase in environmental contamination, especially in aquatic systems, demanding studies to assess and monitor contamination levels in different water bodies. We have done a chemical characterization of eleven sediments in order to evaluate the level of contamination by domestic sewage from the Capibaribe River,
Química Nova. Publicado em: 2022
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3. Are hemoglobin-derived peptides involved in the neuropsychiatric symptoms caused by SARS-CoV-2 infection?
Follow-up of patients affected by COVID-19 has unveiled remarkable findings. Among the several sequelae caused by SARS-CoV-2 viral infection, it is particularly noteworthy that patients are prone to developing depression, anxiety, cognitive disorders, and dementia as part of the post-COVID-19 syndrome. The multisystem aspects of this disease suggest that mul
Brazilian Journal of Psychiatry. Publicado em: 2022
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4. Development of a recovery-room discharge checklist (SAMPE checklist) for safe handover and its comparison with Aldrete and White scoring systems
Abstract Background: The postoperative care transition from the postanesthetic recovery room (PACU) to the common ward or even home discharge represents a critical step of the surgical patients’ handover. Although some systems have been proposed to measure the ability to discharge after an anesthetic-surgical procedure effectively, there is no consensus d
Brazilian Journal of Anesthesiology. Publicado em: 2022
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5. Multi-Step-Ahead Spectrum Prediction for Cognitive Radio in Fading Scenarios
Abstract This paper analyzes multi-step-ahead spectrum prediction for Cognitive Radio (CR) systems using several future states. A slot-based scenario is used, and prediction is based on the Support Vector Machine (SVM) algorithm. The aim is to determine whether multi-step-ahead spectrum prediction has gains in terms of reduced channel-switching and increased
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2020-12
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6. Characterization of Sobradinho landslide in fluvial valley using MASW and ERT methods
Abstract Landslides can substantially impact the fluvial systems, which is why the continuous mapping of their extent, evolution and stability assessment is crucial. However, in such environments, material identification (e.g. colluvium) and subsurface characterization by the methods used for geologic mapping and geotechnical investigation is often a challen
REM, Int. Eng. J.. Publicado em: 2020-12
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7. Multifractal analysis of soil fauna diversity indexes
ABSTRACT The objective of this study was to determine the multifractality of diversity indexes of edaphic fauna in areas with natural vegetation and in agricultural systems. Biological sampling was carried out in seven treatments (millet, maize, soybean, eucalyptus, preserved cerrado, disturbed cerrado and pasture), containing 130 pitfall traps, distributed
Bragantia. Publicado em: 2020-03
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8. Resenha do Livro: Pensamento Sistêmico: o Novo Paradigma da Ciência
RESUMO O livro Pensamento sistêmico: o novo paradigma da ciência exercerá profundas implicações sobre aqueles que desejam compreender as políticas públicas brasileiras para a educação médica, pois tal paradigma estende seus tentáculos para quase todas as áreas do cotidiano, influenciando nossos modos de ser e estar no mundo. Os dois capítulos da
Rev. bras. educ. med.. Publicado em: 13/01/2020
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9. El enfoque de sistemas migratorios revisitado. Una propuesta teórica para el estudio del sistema migratorio de América Latina y el Caribe
Abstract The aim of this article is to revisit the origins, development, limits and potentialities of the migration systems approach. We will formulate a theoretical proposal that, when analyzing the conformation, feedback and reconfiguration of migratory systems, considers the role of the structure, of the meso factors (such as institutions or groups) and o
REMHU, Rev. Interdiscip. Mobil. Hum.. Publicado em: 02/12/2019
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10. Oscilador Harmônico Duplo difuso
Resumo A descrição do comportamento de um sistema difuso, linear e não-linear, pode ser tratada através da equação de Fokker-Planck. Esta equação tem despertado grande interesse de pesquisadores por sua boa adaptação a diferentes sistemas, tanto clássicos como quânticos. Neste trabalho, utilizamos a equação de Fokker-Planck para encontrar as pr
Rev. Bras. Ensino Fís.. Publicado em: 25/11/2019
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11. NUMERICAL AND COMPUTATIONAL ASPECTS OF COSMO-BASED ACTIVITY COEFFICIENT MODELS
ABSTRACT In the present work, some numerical and computational aspects of COSMO-based activity coefficient models were explored. The residual contribution in such models rely on the so called self-consistency equation. This equation does not have a closed-form solution and is usually solved by the successive substitution method. The performance of a classica
Braz. J. Chem. Eng.. Publicado em: 15/07/2019
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12. Plumas em escoamento uniforme com estratificação de duas camadas
RESUMO Plumas ocorrem quando um fluido é descarregado em outro fluido com densidade diferente, como poluentes na atmosfera. Neste trabalho, desenvolveu-se um estudo experimental em um tanque de água e modelagem matemática usando a abordagem integral com o intuito de investigar o escoamento gerado por plumas salinas em escoamento uniforme e com estratifica
Eng. Sanit. Ambient.. Publicado em: 08/04/2019