Calculus
Mostrando 1-12 de 355 artigos, teses e dissertações.
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1. Dynamic Systems with Fractional Derivatives Applied to Interagent Populations Problems
ABSTRACT The present work has as main objective to investigate the use of fractional calculus in the modeling of epidemic outbreaks of interacting populations. In particular, we propose a generalization of the SIR model with fractional derivatives to describe the dynamics of the COVID-19 epidemic outbreak in two cities with interacting populations. In specia
Trends in Computational and Applied Mathematics. Publicado em: 2022
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2. De Leibniz às máquinas sociais: uma visão histórica do surgimento dos agentes inteligentes de informação sob a ótica da ciência da informação
RESUMO Tem como objetivo investigar o contexto histórico do desenvolvimento das ideias que culminaram com o surgimento dos agentes de mineração. Pressupõe, hoje, que cerca de metade da informação processada na Internet é feita por agentes o que estimula uma discussão sobre o papel dos bots na contemporaneidade, bem como da relação destes com pessoa
Perspect. ciênc. inf.. Publicado em: 2021-03
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3. Differences in Periodontal Severity Between Perimenopausal and Postmenopausal Women with Chronic Periodontitis
Abstract Objective: To analyze the differences in periodontal severity between perimenopausal and postmenopausal women with chronic periodontitis. Material and Methods: A cross-sectional study with 63 subjects, comprising 27 perimenopausal and 36 postmenopausal women, aged 45–59 years, was conducted in East Jakarta. The women were interviewed regarding t
Pesqui. Bras. Odontopediatria Clín. Integr.. Publicado em: 13/01/2020
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4. Occurrence of Gingivitis and Oral Hygiene in Individuals with Down Syndrome
Abstract Objective: To determine the frequency distribution of gingivitis and oral hygiene in individuals with Down syndrome. Material and Methods: This study used a cross-sectional descriptive method and the subjects were 174 individuals with Down syndrome aged ≥14 years attending type C (intellectual disability) special needs schools in Jakarta. Gingiv
Pesqui. Bras. Odontopediatria Clín. Integr.. Publicado em: 13/01/2020
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5. Positive Correlation Between the Level of Interferon-Gamma and the Severity of Periodontitis
Abstract Objective: To examine the IFN-γ levels in patients with periodontitis and determine the difference in the levels of IFN-γ with the severity of the disease. Material and Methods: The study design was cross-sectional, and the sample consisted of 31 patients, aged between 18 and 64 years. Plaque index (PlI), calculus index (CI), and papillary bleed
Pesqui. Bras. Odontopediatria Clín. Integr.. Publicado em: 13/01/2020
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6. Exact and inexact differentials in the early development of mechanics and thermodynamics
Abstract We give an account and a critical analysis of the use of exact and inexact differentials in the early development of mechanics and thermodynamics, and the emergence of differential calculus and how it was applied to solve some mechanical problems, such as those related to the cycloidal pendulum. The Lagrange equations of motions are presented in the
Rev. Bras. Ensino Fís.. Publicado em: 02/12/2019
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7. Contribuições de Merkl à Teoria Pura do Direito
Resumo O artigo apresenta as principais contribuições de Merkl para a teoria pura do direito de Kelsen. O método empregado consiste na pesquisa bibliográfica dos escritos de Merkl e Kelsen, assim como da literatura relevante às matérias tratadas. Destaca-se a abrangência da influência de Merkl através da análise e comparação dos seus escritos com
Rev. Direito Práx.. Publicado em: 25/11/2019
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8. Condições de saúde bucal da população indígena guarani moradora no Sul do Brasil
Resumo Introdução A saúde bucal das populações indígenas brasileiras foi historicamente negligenciada. Recentemente tem sido dada atenção especial por meio da Política Nacional de Saúde Bucal Indígena. No entanto, muito pouco ainda se sabe a respeito da realidade epidemiológica bucal dessas populações, em especial no Sul do Brasil. Objetivo I
Cad. saúde colet.. Publicado em: 25/11/2019
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9. Free Vibration of flexible soft-core sandwiches according to layerwise theories differently accounting for the transverse normal deformability
Abstract This study aims to generalize a previously developed accurate and inexpensive 3-D zig-zag theory up to an arbitrary representation form and to determine which simplifications are yet accurate in determining transverse shear and normal stress/deformation effects on vibrations of soft-core sandwiches with not moving middle/neutral plane (pumping). Nat
Lat. Am. j. solids struct.. Publicado em: 28/10/2019
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10. Impact of smoking on gingival inflammation in representative samples of three South American cities
Abstract The aim of this study was to investigate the impact of smoking on gingival inflammation in a representative sample of 1,650 adults from Santiago (Chile), Porto Alegre (Brazil), and Tucumán (Argentina). A questionnaire was administered to participants to gather demographic and behavioral characteristics, including smoking habits. The participants we
Braz. oral res.. Publicado em: 16/09/2019
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11. Integral Representations of Mittag-Leffler Function on the Positive Real Axis
RESUMO Através do método para encontrar a transformada de Laplace inversa sem o uso de um contorno de integração no plano complexo, mostramos que a função de Mittag-Leffler de três parêmetros, que aparece em muitos problemas associados com cálculo fracionário, possui representações integrais similares no semieixo real positivo. Algumas delas são
TEMA (São Carlos). Publicado em: 16/09/2019
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12. Translation, Transcultural Adaptation and Validation of the Halitosis Associated Life-Quality Test for Use in Brazilian Adolescents
Abstract Objective: To perform the transcultural adaptation to Brazil and validation of the Halitosis Associated Life-quality Test (HALT) for use in adolescents. Material and Methods: Students aged 12 to 15 years, of both sexes, with healthy permanent dentition, attending public schools in Piracicaba, Brazil, were selected for this study. The HALT was tran
Pesqui. Bras. Odontopediatria Clín. Integr.. Publicado em: 02/09/2019