1,831 results on '"Nepomuceno P"'
Search Results
152. MicroRNAs expression profiles in early responses to different levels of water deficit in Setaria viridis
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Duarte, Karoline Estefani, Basso, Marcos Fernando, de Oliveira, Nelson Geraldo, da Silva, José Cleydson Ferreira, de Oliveira Garcia, Bruno, Cunha, Bárbara Andrade Dias Brito, Cardoso, Thiago Bergamo, Nepomuceno, Alexandre Lima, Kobayashi, Adilson Kenji, Santiago, Thaís Ribeiro, de Souza, Wagner Rodrigo, and Molinari, Hugo Bruno Correa
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- 2022
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153. Assessment of small in-frame indels and C-terminal nonsense variants of BRCA1 using a validated functional assay
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Thales C. Nepomuceno, Ana P. P. dos Santos, Vanessa C. Fernandes, Anna B. R. Elias, Thiago T. Gomes, Guilherme Suarez-Kurtz, Edwin S. Iversen, Fergus J. Couch, Alvaro N. A. Monteiro, and Marcelo A. Carvalho
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Medicine ,Science - Abstract
Abstract BRCA1 (Breast Cancer 1, early onset) is linked to breast and ovarian cancer predisposition. Still, the risks conferred by a significant portion of BRCA1 variants identified in the population remains unknown. Most of these variants of uncertain significance are missense alterations. However, the functional implications of small in-frame deletions and/or insertions (indels) are also difficult to predict. Our group has previously evaluated the functional impact of 347 missense variants using an extensively validated transcriptional activity assay. Here we show a systematic assessment of 30 naturally occurring in-frame indels located at the C-terminal region of BRCA1. We identified positions sensitive and tolerant to alterations, expanding the knowledge of structural determinants of BRCA1 function. We further designed and assessed the impact of four single codon deletions in the tBRCT linker region and six nonsense variants at the C-terminus end of BRCA1. Amino acid substitutions, deletions or insertions in the disordered region do not significantly impact activity and are not likely to constitute pathogenic alleles. On the other hand, a sizeable fraction of in-frame indels at the BRCT domain significantly impact function. We then use a Bayesian integrative statistical model to derive the probability of pathogenicity for each variant. Our data highlights the importance of assessing the impact of small in-frame indels in BRCA1 to improve risk assessment and clinical decisions for carriers.
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- 2022
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154. Molecular Epidemiology of Sporadic and Outbreak-Related Salmonella Typhi Isolates in the Brazilian North Region: A Retrospective Analysis from 1995 to 2013
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Ana Judith Pires Garcia Quaresma, Yan Corrêa Rodrigues, Joseline Barbosa Aboim, Mayza Miranda Bezerra, Maria Isabel Montoril Gouveia, Ana Roberta Fusco Da Costa, Cintya de Oliveira Souza, Flávia Corrêa Bastos, Luana Nepomuceno Gondim Costa Lima, Francisco Lúzio de Paula Ramos, and Karla Valéria Batista Lima
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Salmonella Typhi ,laboratory surveillance ,genotyping ,Other systems of medicine ,RZ201-999 - Abstract
Typhoidal salmonellosis is a global public health problem occurring in developing endemic regions. In Brazil, cases are mostly registered in the North and Northeast regions. Molecular characterization of the strains is important to understand the epidemiology of disease infections and to design control strategies. The present study retrospectively evaluates the genotyping features of sporadic and outbreak-related Salmonella Typhi isolates from the Brazilian North region. Bacterial isolates were recovered from blood and a rectal swab of patients in the states of Acre and Pará, Brazilian North region, in the period of 1995 to 2013, and were submitted to genotyping by applying Multilocus sequence typing (MLST) and Pulsed Field Gel Electrophoresis (PFGE) reference methods. MLST genotyping revealed the presence of epidemic clones ST1 and ST2, and 20 pulsotypes were identified by PFGE, including four distinct clusters (A–D), and six subclusters (A1–D1) with indistinguishable strains in different periods and locations. To conclude, the obtained data demonstrates the temporal stability, adaptation, and transmission of outbreak-related and sporadic S. Typhi strains over time, contributing to the transmission chain in the region.
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- 2022
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155. Quantifying Webpage Performance: A Comparative Analysis of TCP/IP and QUIC Communication Protocols for Improved Efficiency
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Thyago Celso Cavalcante Nepomuceno, Késsia Thais Cavalcanti Nepomuceno, Fabiano Carlos da Silva, and Silas Garrido Teixeira de Carvalho Santos
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data envelopment analysis ,internet ,communication protocols ,efficiency analysis ,websites ,TCP/IP ,Bibliography. Library science. Information resources - Abstract
Browsing is a prevalent activity on the World Wide Web, and users usually demonstrate significant expectations for expeditious information retrieval and seamless transactions. This article presents a comprehensive performance evaluation of the most frequently accessed webpages in recent years using Data Envelopment Analysis (DEA) adapted to the context (inverse DEA), comparing their performance under two distinct communication protocols: TCP/IP and QUIC. To assess performance disparities, parametric and non-parametric hypothesis tests are employed to investigate the appropriateness of each website’s communication protocols. We provide data on the inputs, outputs, and efficiency scores for 82 out of the world’s top 100 most-accessed websites, describing how experiments and analyses were conducted. The evaluation yields quantitative metrics pertaining to the technical efficiency of the websites and efficient benchmarks for best practices. Nine websites are considered efficient from the point of view of at least one of the communication protocols. Considering TCP/IP, about 80.5% of all units (66 webpages) need to reduce more than 50% of their page load time to be competitive, while this number is 28.05% (23 webpages), considering QUIC communication protocol. In addition, results suggest that TCP/IP protocol has an unfavorable effect on the overall distribution of inefficiencies.
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- 2023
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156. PERFIL DOS ERROS DE MEDICAMENTOS POR SONDA ENTERAL EM TERAPIA INTENSIVA
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Caroline de Deus Lisboa, Karla Biancha Silva de Andrade, Flávia Giron Camerini, Danielle de Mendonça Henrique, Cintia Silva Fassarella, Raquel de Mendonça Nepomuceno, Luana Ferreira de Almeida, and Vanessa Galdino de Paula
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Segurança do Paciente ,Unidade de Terapia Intensiva ,Erros de medicação ,Nutrição enteral ,Nursing ,RT1-120 - Abstract
Objetivo: analisar os erros que ocorrem no preparo de medicamentos por sondas enterais em terapia intensiva. Método: estudo observacional, com desenho transversal, norteado pelas recomendações do Strengthening the Reporting of Observational Studies in Epidemiology (STROBE), realizado em quatro unidades de terapia intensiva de um hospital privado da cidade do Rio de Janeiro. Para avaliar o preparo de medicamentos na forma farmacêutica sólida as variáveis foram: trituração e diluição. Para os medicamentos líquidos somente a variável diluição. A unidade de medida utilizada para o cálculo amostral foi a dose preparada do medicamento, sendo analisadas 720 doses de medicamentos prescritos por sondas. Foram observados 80 técnicos de enfermagem no momento de preparo dos medicamentos garantindo-se que o profissional fosse observado no manejo de no mínimo nove doses de medicamentos. Resultados: Foi identificado erro no preparo de 480 doses (66,66%). Os comprimidos revestidos e cápsulas de gelatina dura foram triturados indevidamente em 100% das doses analisadas e 54% dos comprimidos simples tiveram tritura insuficiente. A diluição insuficiente ocorreu em 100% das doses de xaropes. A tritura insuficiente para comprimidos simples ocorreu em 310 doses (54%). A diluição insuficiente ocorreu em 100% das doses de xaropes. O erro prevalente foi o de tritura para os medicamentos sólidos. Conclusões: o preparo de medicamentos apresentou uma frequência alta de erros, o que pode levar a perdas na biodisponibilidade do fármaco e comprometer as boas práticas da terapia medicamentosa por sonda enteral.
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- 2023
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157. Representações multimodais em peças publicitárias da Pantene
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Zaira Bonfante dos Santos, Arlete Ribeiro Nepomuceno, Vera Lúcia Viana de Paes, and Karla Mariana Souza e Santos
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multimodality ,advertisement ,semiotics. ,Language and Literature ,Philology. Linguistics ,P1-1091 - Abstract
Este artigo objetiva verificar como produtos capilares da marca Pantene são representados no discurso midiático da publicidade, visando a impulsionar a marca e o consumo. Numa abordagem de cunho qualitativo-interpretativo, analisam-se duas peças publicitárias da Pantene, extraídas do ambiente on-line. A análise ancora-se nas categorias analíticas propostas pelas Gramática Sistêmico-Funcional (GSF), fundamentada em Halliday e Matthiessen (2014), e pela Gramática do Design Visual (GDV), proposta por Kress e van Leeuwen (2021). Conclui-se que a produção de sentidos emerge da interação de vários modos semióticos, dos quais, cada um é responsável por uma tarefa comunicativa, mas são interdependentes entre si. Os resultados apontam para construções multissignificativas, marcadas por processos materiais, mentais e relacionais e pela escolha das funções discursivas de declaração, pergunta e comando, associados às semioses visuais, construindo representações de status, glamour, patriotismo, sedução, maciez, brilho e beleza.
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- 2023
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158. Escala ABCD-10 como predictor de mortalidad en niños con farmacodermias graves. Reporte de caso
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Britza Barrios Díaz, Ana Paola Macías Robles, Héctor Hugo Campos Téllez, Rosa María Cortés Grimaldo, Hilda Lilian Carvajal Alonso, Kareli Guadalupe Coronado Hernández, Carlos David Estrada García, Adriana Ramírez Nepomuceno, Marlen Barreto Alcalá, and David Esparza Amaya
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Stevens-Johnson syndrome ,dialysis ,mortality ,ABCD-10 ,children ,Immunologic diseases. Allergy ,RC581-607 - Abstract
Antecedentes: Las farmacodermias graves se asocian con alta morbilidad y mortalidad. La insuficiencia renal crónica relacionada con diálisis es uno de los principales factores asociados con mortalidad. Reporte de caso: Paciente pediátrico masculino de 2 años, con antecedente de insuficiencia renal crónica (en tratamiento con diálisis peritoneal) y síndrome de Lennox-Gastaut, que ingresó al hospital por peritonitis aguda y evolucion a síndrome de Stevens-Johnson-necrólisis epidérmica tóxica, debido a la administración de fenitoína. Recibió tratamiento con inmunoglobulina y corticosteroide sistémico sin mejoría; se agregó choque séptico y posteriormente falleció. Conclusiones: La escala ABCD-10 versus SCORTEN es más efectiva para predecir la mortalidad por antecedente de diálisis. En niños con farmacodermias graves no existen escalas predictoras de mortalidad validadas. Las futuras iniciativas deben buscar factores de riesgo de mortalidad en niños con farmacodermias graves para la creación de una escala predictora de mortalidad. Palabras clave: Síndrome Stevens-Johnson; necrólisis epidérmica tóxica; diálisis; mortalidad; escala ABCD-10; niños.
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- 2023
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159. CRISPR-transient expression in soybean for simplified gRNA screening in planta
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Alessandra Koltun, Nathalia Volpi e Silva, Jéssika Angelotti-Mendonça, Silvana Regina Rockenbach Marin, Leandro Simões Azeredo Gonçalves, Alexandre Lima Nepomuceno, and Liliane Marcia Mertz-Henning
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Glycine max ,CRISPR vector construction ,gRNA validation ,mutation detection ,Agriculture (General) ,S1-972 - Abstract
Abstract The objective of this work was to develop a method to create and validate CRISPR-Cas systems and different gRNAs in soybean (Glycine max) embryos. Two model genes were used for simple mutation with one gRNA or partial gene deletion with two guides. The gRNAs were inserted into the CRISPR transformation vectors by a type IIS restriction enzyme or by subcloning and inserting the promoter + gRNA2 in the final transformation vector using the classic restriction enzyme cloning method. The vectors were successfully constructed for one and two gRNAs. Agrobacterium-mediated transient transformation in soybean was carried out to test the quality of gRNAs and of the system itself (expression cassette). Simple mutation and gene deletion were detected in the embryos transformed after DNA enrichment by enzyme digestion followed by polymerase chain reaction and sequencing, which indicates that the CRISPR-Cas system and guides were working. This protocol can be used to accelerate CRISPR-based genome editing strategies for genetic transformation in soybean.
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- 2023
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160. Manter-se desperto na cidade-dormitório: São Gonçalo-RJ e a cristalização de representações
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Marco Lourenço Nepomuceno
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cidade-dormitório ,representação ,produção do espaço urbano ,São Gonçalo/RJ ,Geography. Anthropology. Recreation ,Geography (General) ,G1-922 - Abstract
Entende-se que o conceito de cidade-dormitório, há muito presente nas discussões sobre São Gonçalo-RJ, provoca uma ausência: as várias possibilidades de ver e representar a cidade se ofuscam sob a onipresença desse conceito. Procuramos tratar das implicações da cristalização de certas representações que se conformam em torno dele. Entende-se que, quando deixa de ser mediação entre o vivido e o concebido, o conceito pode se cristalizar e bloquear o entendimento. Neste artigo, recuperamos alguns usos do conceito cidade-dormitório na Região Metropolitana do Rio de Janeiro confrontando-os com dados da realidade atual do município. Também discutimos implicações simbólicas e materiais devidas à cristalização dessas representações, acompanhadas de seu papel na produção do espaço da cidade. Como resultado de pesquisa, concluímos que é preciso fazer emergir um entendimento que ultrapasse a primazia do centro metropolitano; há que compreender as representações para deslindar seus nós, observá-las para ver além delas.
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- 2023
161. Desafios para o exercício da advocacia em saúde à criança hospitalizada durante a pandemia COVID-19
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Ana Carla Petersen de Oliveira Santos, Mara Ambrosina de Oliveira Vargas, Climene Laura de Camargo, Elaine Cristina Novatzki Forte, Cíntia Michelle Alexandria Nepomuceno, and Carla Aparecida Arena Ventura
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Advocacia em saúde ,Direitos da criança ,Criança hospitalizada ,COVID-19 ,Infecções por coronavírus ,Pandemias ,Nursing ,RT1-120 - Abstract
Resumo Objetivo Analisar os desafios para o exercício da advocacia em saúde à criança hospitalizada durante a pandemia COVID-19. Métodos Estudo qualitativo descritivo-exploratório on-line. Participaram 28 profissionais de enfermagem matriculados na disciplina Enfermagem na Atenção à Saúde da Criança e do Adolescente em um Programa de pós-graduação de uma universidade federal do nordeste brasileiro. A coleta de dados ocorreu em junho de 2021 através de roda de conversa e entrevista coletiva. Como instrumentos utilizou-se: o formulário do google forms e roteiro semiestruturado. O estudo foi aprovado pelo Comitê de Ética em Pesquisa. Como método de análise, foi empregada a Análise Textual Discursiva (ATD). Para a organização dos dados, utilizou-se o software Atlas.ti 8.4.15 (Qualitative Research and Solutions). Resultados Emergiram duas categorias: 1) Impactos da pandemia para assistência e advocacia pediátrica, constatou-se o isolamento infantil e um cenário de atenção à saúde onde a criança foi colocada em segundo plano. 2) Barreiras existentes que se agravaram com a crise sanitária, identificou-se: sobrecarga de trabalho, precarização da estrutura e dificuldade nas condições de trabalho, que gerou violações nos direitos infantis e agravou o panorama de dificuldades na oferta de serviços pediátricos. Conclusão Os desafios para o exercício da advocacia em saúde à criança hospitalizada durante a pandemia, evidenciados pelos impactos e barreiras para a assistência, ampliaram o trabalho das equipes de saúde tornando o exercício da advocacia no cuidado pediátrico ainda mais dificultoso. Cabe repensar e ajustar políticas de acesso e atendimento após a pandemia para assegurar que o cuidado infantil não seja restringido.
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- 2023
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162. Parental supervision and sexual behavior among Brazilian adolescents
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Gleice Barbosa Reis, Marco Aurélio de Sousa, Gisele Nepomuceno de Andrade, Deborah Carvalho Malta, Ísis Eloah Machado, and Mariana Santos Felisbino-Mendes
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Unsafe sex ,Family development planning ,Adolescent ,Parent-child relations ,Sexual and reproductive health ,Gender inequality ,Public aspects of medicine ,RA1-1270 - Abstract
ABSTRACT Objective: to evaluate the association between parental supervision and sexual behaviors among Brazilian adolescents. Methods: Cross-sectional study with data from 102,072 adolescents who responded to the National Adolescent School-based Health Survey. We estimated the prevalence of sexual behaviors (initiation, use of condoms, contraception, and number of partners). Parental supervision was evaluated using a score considering five indicators. We calculated prevalence ratios (PR) adjusted by age and sex in order to estimate the association between parental supervision score and sexual behaviors of adolescents. Results: Prevalence of risky sexual behavior for adolescents with minimum and maximum parental supervision were: sexual initiation (min.: 58.0%; max.: 20.1%), condom use in the last sexual intercourse (min.: 50.9%; max.: 80.2%), use of contraceptives (min.: 40.8; max.: 49.1%), and mean number of partners (min.: 3.25; max.: 2.88). Parental supervision was greater among girls. Those with higher supervision scores had higher prevalence of condom use in the first and last sexual intercourse and of contraceptive methods, and a smaller mean number of partners, even after adjustments for sex and age. Conclusion: The greater the parental supervision, the better the sexual behavior for both sexes, although supervision seems to occur differently between girls and boys. These findings point to the role of the family in providing adolescents with monitoring, along with dialogue and affection, conditions that encourage healthy and risk-free sexual behavior.
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- 2023
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163. Violence Against LGB+ people in Brazil: analysis of the 2019 National Survey of Health
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Nádia Machado de Vasconcelos, Francielle Thalita Almeida Alves, Gisele Nepomuceno de Andrade, Isabella Vitral Pinto, Adauto Martins Soares Filho, Cimar Azeredo Pereira, and Deborah Carvalho Malta
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Sexual and gender minorities ,Sexism ,Gender-based violence ,Health surveys ,Public aspects of medicine ,RA1-1270 - Abstract
ABSTRACT Objective: To analyze the association between self-reported sexual orientation and violence in the Brazilian population. Methods: This cross-sectional epidemiological study used the 2019 National Survey of Health database. Total violence and its subtypes (psychological, physical, and sexual) were analyzed in the previous 12 months. Prevalence and odds ratio adjusted for age group were estimated, with their respective 95% confidence intervals, according to the self-reported sexual orientation of the Brazilian population aged 18 years and older. Statistical significance was set at 5%. Results: Most of the Brazilian population self-identified as heterosexual (94.75%) and 1.89% as LGB+. This percentage was lower than that of respondents who refused to answer the question (2.28%). The prevalence of violence in the general population of Brazil was 18.27%, and the most common subtype was psychological violence (17.36%). The LGB+ population was more than twice as likely to experience any type of violence. LGB+ women had the highest prevalence in all violence subtypes, and heterosexual men had the lowest. LGB+ women were over three times more likely to experience physical violence compared to heterosexual ones. Meanwhile, the probability of LGB+ men experiencing sexual violence was almost eight times higher than in heterosexual men. Conclusion: The prevalence of violence against the LGB+ population was high in the country. Public policies aimed at this population are necessary to fight discrimination against sexual diversity and ensure the rights of non-heterosexual people.
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- 2023
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164. Síndrome de hiper-IgM con afectación hepática temprana
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Kareli Guadalupe Coronado Hernández, Héctor Hugo Campos Téllez, Ana Paola Macías Robles, Rosa María Cortés Grimaldo, Carlos David Estrada García, Britza Barrios Díaz, Adriana Ramírez Nepomuceno, Marlén Barreto Alcalá, David Esparza Amaya, Hilda Lilian Carvajal Alonso, and Laura Berrón Ruiz
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Síndrome de Hiper IgM ,daño hepático ,error innato de la inmunidad ,deficiencia de CD40L ,Immunologic diseases. Allergy ,RC581-607 - Abstract
Introducción: El síndrome de hiper-IgM es un error innato de la inmunidad, caracterizado por un defecto en el cambio de isotipo de inmunoglobulina, con valores disminuidos de IgG, IgA e IgE, y concentraciones normales o elevadas de IgM. Predispone a procesos infecciosos en el sistema respiratorio y aparato gastrointestinal, además de enfermedades autoinmunes y neoplasias. Reporte de caso: Paciente pediátrico de género masculino, de 5 años y 7 meses de edad, con antecedente de dos cuadros de neumonía (uno de estos grave) y diarrea crónica desde los 2 años. Neutropenia moderada persistente, disminución de la concentración de IgG y elevación de IgM. La citometría de flujo confirmó la ausencia de CD40L. Durante la evolución clínica tuvo afectación hepática temprana. Conclusión: El síndrome de hiper-IgM predispone a daño hepático, por lo que se requiere la evaluación completa y el diagnóstico oportuno. El tratamiento antiinfeccioso activo y el control de la respuesta inflamatoria son factores decisivos para establecer el tratamiento del daño hepático.
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- 2023
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165. Assessment of risk scores to predict mortality of COVID-19 patients admitted to the intensive care unit
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Matheus Carvalho Alves Nogueira, Vandack Nobre, Magda Carvalho Pires, Lucas Emanuel Ferreira Ramos, Yara Cristina Neves Marques Barbosa Ribeiro, Rubia Laura Oliveira Aguiar, Flavia Maria Borges Vigil, Virginia Mara Reis Gomes, Camila de Oliveira Santos, Davi Mesquita Miranda, Pamela Andrea Alves Durães, Josiane Moreira da Costa, Alexandre Vargas Schwarzbold, Angélica Gomides dos Reis Gomes, Bruno Porto Pessoa, Carolina Cunha Matos, Christiane Corrêa Rodrigues Cimini, Cíntia Alcântara de Carvalho, Daniela Ponce, Euler Roberto Fernandes Manenti, Evelin Paola de Almeida Cenci, Fernando Anschau, Flávia Carvalho Cardoso Costa, Francine Janaina Magalhães Nascimento, Frederico Bartolazzi, Genna Maira Santos Grizende, Heloisa Reniers Vianna, Jomar Cristeli Nepomuceno, Karen Brasil Ruschel, Liege Barella Zandoná, Luís César de Castro, Maíra Dias Souza, Marcelo Carneiro, Maria Aparecida Camargos Bicalho, Mariana do Nascimento Vilaça, Naiara Patrícia Fagundes Bonardi, Neimy Ramos de Oliveira, Raquel Lutkmeier, Saionara Cristina Francisco, Silvia Ferreira Araújo, Polianna Delfino-Pereira, and Milena Soriano Marcolino
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SARS-CoV-2 ,COVID-19 ,intensive care unit ,prognosis ,mortality ,risk scores ,Medicine (General) ,R5-920 - Abstract
ObjectivesTo assess the ABC2-SPH score in predicting COVID-19 in-hospital mortality, during intensive care unit (ICU) admission, and to compare its performance with other scores (SOFA, SAPS-3, NEWS2, 4C Mortality Score, SOARS, CURB-65, modified CHA2DS2-VASc, and a novel severity score).Materials and methodsConsecutive patients (≥ 18 years) with laboratory-confirmed COVID-19 admitted to ICUs of 25 hospitals, located in 17 Brazilian cities, from October 2020 to March 2022, were included. Overall performance of the scores was evaluated using the Brier score. ABC2-SPH was used as the reference score, and comparisons between ABC2-SPH and the other scores were performed by using the Bonferroni method of correction. The primary outcome was in-hospital mortality.ResultsABC2-SPH had an area under the curve of 0.716 (95% CI 0.693–0.738), significantly higher than CURB-65, SOFA, NEWS2, SOARS, and modified CHA2DS2-VASc scores. There was no statistically significant difference between ABC2-SPH and SAPS-3, 4C Mortality Score, and the novel severity score.ConclusionABC2-SPH was superior to other risk scores, but it still did not demonstrate an excellent predictive ability for mortality in critically ill COVID-19 patients. Our results indicate the need to develop a new score, for this subset of patients.
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- 2023
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166. A REFORMA DO ENSINO MÉDIO NO BRASIL: UMA CONTRARREFORMA TRABALHISTA PARA O TRABALHO DOCENTE
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Vera Nepomuceno
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Special aspects of education ,LC8-6691 ,Labor market. Labor supply. Labor demand ,HD5701-6000.9 ,Labor policy. Labor and the state ,HD7795-8027 - Abstract
A presente tese tem como tema central o processo de modificações do trabalho docente nas escolas públicas estaduais, a partir da implementação da reforma do ensino médio (REM) em curso no Brasil. Em face disso, procuramos compreender as relações entre um conjunto de documentos, que, alinhados e complementares à Lei nº. 13.415/2017, repercutiram nas condições de realização desse trabalho, instituindo novas formas de expropriação de direitos dos (as) professores (as) das escolas públicas estaduais. As mudanças vinculadas a esse processo se relacionam e vêm se desenvolvendo, intensificando e se revelando como parte de uma tendência que parece se constituir a partir de uma multiplicidade de causas, processos e aspectos vinculados a modificações no mundo do trabalho no século XXI (ANTUNES, 2018).
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- 2023
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167. Epidemiological and clinical characteristics of mpox cases: reply
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Ana Roberta Pascom, Isabella Nepomuceno de Souza, Amanda Krummenauer, Magda Machado Saraiva Duarte, Janaina Sallas, Daniela Buosi Rohlfs, Gerson Mendes Pereira, Arnaldo Correia de Medeiros, and Angelica Espinosa Miranda
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Medicine ,Public aspects of medicine ,RA1-1270 - Published
- 2023
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168. Structure and floristics of the plant community in Lagoa do São Bento, Maricá, Rio de Janeiro state, Brazil
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Carolina Penna e Silva, Daniel Luiz da Silva Dutra Jr., Davi Nepomuceno da Silva Machado, Ana Angélica Monteiro de Barros, and Jorge Antônio Lourenço Pontes
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conservation ,phytosociology ,regeneration ,restinga ,wetlands ,Biology (General) ,QH301-705.5 ,Botany ,QK1-989 - Abstract
Abstract Lagoa do São Bento is a coastal restinga wetland, remnant of a paleolake, located in Maricá, RJ. The study aimed to inventory native aquatic plants, make a floristic comparison with other coastal lagoons and analyze the regeneration of this community after anthropic impacts. In the floristic analysis of aquatic plants, 45 species were listed, 39 of which are Angiosperms and six are Ferns. Aeschynomene paniculata, Hymenachne amplexicaulis, Montrichardia linifera and Torenia thouarsii are new records for the municipality and Tabebuia cassinoides is threatened. Emerging plants (21 spp.) stand out, followed by amphibians (16 spp.), free floating (4 spp.), fixed floating (3 spp.) and tolerant (1 sp.). The comparison showed greater similarity with the Jacarepiá lagoon, in Saquarema, sharing 21 species. The phytosociological inventory listed 87 species, 83 of which were Angiosperms and four Ferns. The species with the highest IVI were: Fuirena umbellata, Pleroma gaudichaudianum, Xyris jupicai, Typha domingensis, Salvinia aff. auriculata, Eleocharis interstincta, Rhynchospora gigantea, Nymphoides humboldtiana, Nymphaea caerulea and Clitoria laurifolia. Shannon, Simpson and equity indexes were 3.83, 0.03 and 0.85, respectively. Native aquatic species represent the majority of the total inventoried (54%), with a considerable supply of exotic and ruderal, whose colonization reflects the anthropic interventions.
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- 2023
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169. Information Security Applications in Smart Cities: A Bibliometric Analysis of Emerging Research
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Thiago Poleto, Thyago Celso Cavalcante Nepomuceno, Victor Diogho Heuer de Carvalho, Ligiane Cristina Braga de Oliveira Friaes, Rodrigo Cleiton Paiva de Oliveira, and Ciro José Jardim Figueiredo
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information security ,smart city ,technical collaborations networks ,applications ,bibliometric analysis ,Information technology ,T58.5-58.64 - Abstract
This paper aims to analyze the intellectual structure and research fronts in application information security in smart cities to identify research boundaries, trends, and new opportunities in the area. It applies bibliometric analyses to identify the main authors and their influences on information security and the smart city area. Moreover, this analysis focuses on journals indexed in Scopus databases. The results indicate that there is an opportunity for further advances in the adoption of information security policies in government institutions. Moreover, the production indicators presented herein are useful for the planning and implementation of information security policies and the knowledge of the scientific community about smart cities. The bibliometric analysis provides support for the visualization of the leading research technical collaboration networks among authors, co-authors, countries, and research areas. The methodology offers a broader view of the application information security in smart city areas and makes it possible to assist new research that may contribute to further advances. The smart cities topic has been receiving much attention in recent years, but to the best of our knowledge, there is no research on reporting new possibilities for advances. Therefore, this article may contribute to an emerging body of literature that explores the nature of application information security and smart cities research productivity to assist researchers in better understanding the current emerging of the area.
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- 2023
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170. Foodborne Diseases: A Study before and during the COVID-19 Pandemic in Brazil
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Fernanda Vinhal Nepomuceno, Rita de Cassia Coelho de Almeida Akutsu, Cainara Lins Draeger, and Izabel Cristina Rodrigues da Silva
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national survey ,foodborne disease ,public health ,health survey ,Nutrition. Foods and food supply ,TX341-641 - Abstract
Foodborne Diseases (FBDs) are a worldwide problem and occur after contaminated food has been ingested, signaling a lack of food quality. Even though the SARS-CoV-2 virus is not transmitted through food, the COVID-19 pandemic has caused several challenges worldwide that have had direct implications on food production and handling, stimulating and reinforcing the adoption of good manufacturing and food handling practices. The aim of this study was to analyze data on notifications of FBD in Brazil in the years before (2018 and 2019) and during (2020 and 2021) the COVID-19 pandemic. Secondary data from the National System of Notifiable Diseases was analyzed, evaluating: overall incidence rate, lethality and mortality, contamination sites, and criteria for confirming the etiological agent. There were 2206 records of FBDs, and the mortality rate was 0.5% in both periods. The incidence rate before the pandemic was 6.48 and during the pandemic was 3.92, while the mortality coefficient was 0.033 before and 0.019 during the pandemic, both per 100,000 inhabitants. There was no significant difference in the number of FBD notifications in the evaluated periods. There was a migration of the location of FBD, with a significant increase in FBD notifications in hospitals and health units and a reduction in notifications from social events. There was a significant increase in the type of criteria used to confirm outbreaks, with an increase in clinical laboratory tests and clinical reports for bromatology. The increase in notifications in hospitals and health units demonstrates the necessity of improving food safety knowledge and the attitudes and practices of food handlers and healthcare professionals.
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- 2023
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171. Investigating the Architecture and Characteristics of Asian Hornet Nests: A Biomimetics Examination of Structure and Materials
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Naim Sedira, Jorge Pinto, Mário Ginja, Ana P. Gomes, Miguel C. S. Nepomuceno, and Sandra Pereira
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biomimetics ,construction ,architecture ,vespa velutina nigrithorax ,eco-material ,CT scan ,Technology ,Electrical engineering. Electronics. Nuclear engineering ,TK1-9971 ,Engineering (General). Civil engineering (General) ,TA1-2040 ,Microscopy ,QH201-278.5 ,Descriptive and experimental mechanics ,QC120-168.85 - Abstract
This study investigates the internal architecture of Asian hornet nests (AHNs) using advanced imaging techniques, such as CT scanning and X-ray radiography, to understand their construction and function. The primary objective and significance of this study centre on drawing inspiration from the creative way Asian hornets construct their nests, with a particular focus on the architecture, design, functionality, and building materials of these nests. The architectural principles governing the construction of these nests, such as the arrangement of hexagonal cells, pedicels for load bearing, and adhesive materials, serve as a source of inspiration for innovative and sustainable design practices. The pedicels in Asian hornet nests play a crucial role in transferring load and ensuring stability. Additionally, AHNs’ adhesion to tree branches is essential for preventing collapse, and the pedicels provide necessary structural support. The knowledge gained from studying AHNs’ internal architecture could be applied directly to the architecture and civil engineering fields to improve structure stability and durability. The microstructure analysis of the paper-like material that hornets produce to build their nests indicates a complex and heterogeneous structure, composed of various plant fragments and fibres. This unique composition creates intricate grooves and pores, which are essential for regulating temperature and humidity levels within the outer envelope of the nest. The study of Asian hornet nests’ internal structure demonstrated that nature’s engineering principles inspire the design of durable and resilient structures in the construction industry. Civil engineers can incorporate similar principles into their designs to enhance the structural integrity and performance of buildings, bridges, and other infrastructure.
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- 2023
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172. Modified Genetic Algorithm for the Profit-Based Unit Commitment Problem in Competitive Electricity Market
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Lucas Santiago Nepomuceno, Layon Mescolin de Oliveira, Ivo Chaves da Silva Junior, Edimar José de Oliveira, and Arthur Neves de Paula
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profit-based unit commitment ,compressed air energy storage ,day-ahead energy market ,hybrid optimization ,genetic algorithm ,Technology - Abstract
This article proposes a solution to the Profit-Based Unit Commitment (PBUC) problem to maximize the profit of a power generation company that owns thermal units and compressed air energy storage (CAES) systems, considering the Day-Ahead market. The proposed methodology is more realistic as it considers a mixed-integer nonlinear formulation of the PBUC. The problem is solved through two stages, with Stage 1 dedicated to obtaining the operational state of the generating units (On or Off) and the operation mode of the storage system (energy exchange: charging, discharging, idle). Stage 2 determines the dispatch of power from the thermoelectric units and the energy exchange in the storage system. The analysis of the system consisting of 20 thermoelectric units and three storage systems shows the efficiency of the proposed method in making decisions for the power generation company and is therefore promising for real-world applications.
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- 2023
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173. Shear Testing of Topologically Optimised Web Cover Plates in Splice Connections—Experiment Design and Results
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Tiago Ribeiro, Luís Bernardo, Miguel C. S. Nepomuceno, Natale Antonio Maugeri, Paolo Longo, and Dario De Domenico
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topology optimisation ,splice connection ,shear ,ultimate capacity ,buckling ,experimental results ,Technology ,Electrical engineering. Electronics. Nuclear engineering ,TK1-9971 ,Engineering (General). Civil engineering (General) ,TA1-2040 ,Microscopy ,QH201-278.5 ,Descriptive and experimental mechanics ,QC120-168.85 - Abstract
Testing shear-resisting plates in steel connections is one of the most challenging laboratory undertakings in steel construction, as the most common experimental layout design includes simulating the connection with its adjoining members. This significant hindrance gained particular magnitude as the need to test prototypes of topologically optimised shear cover plates became more pressing. Indeed, new code-compliant topology optimisation approaches for steel construction have recently been offered, and physically non-linear analyses have been demonstrated to be vital for assessing these elements. Hence, a rapid and reliable experimental process has become a fundamental necessity. To answer this need, a novel layout is herein proposed, in which topologically optimised and previously numerically examined bolted shear plates of a well-known steel joint were tested. The results allowed for the definition of the material trilinear model for use in subsequent numerical analysis, as well as the validation of the numerical simulation results. The discrepancy between the previously mathematically anticipated and empirically determined ultimate resistance did not exceed 1.7%.
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- 2023
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174. Optimizing Police Locations around Football Stadiums Based on a Multicriteria Unsupervised Clustering Analysis
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Antonio Marcos de Lima, Thyago C. C. Nepomuceno, Isaac Pergher, Victor D. H. de Carvalho, and Thiago Poleto
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unsupervised clustering analysis ,multicriteria decision aid (MCDA) ,K-means ,PROMETHEE ,violence ,football ,Engineering machinery, tools, and implements ,TA213-215 - Abstract
This work proposes a methodology based on multicriteria decision aid (MCDA) and a cluster analysis to identify ideal locations for the installation of police facilities or vehicle parking and policing around stadiums in Recife, Brazil, during potential violent sports events (criminal occurrences from football supporters or fanbases). A K-means unsupervised clustering algorithm is used to group criminal data into homogeneous clusters based on their characteristics. Each type of criminal occurrence is linked to a single cluster. The optimal location is addressed based on the PROMETHEE method (Preference Ranking Organization Method for Enrichment Evaluation), allowing clusters to be organized into a hierarchy based on the number of facilities (N), the average distance (D) from the criminal occurrence to the associated cluster, and the coverage level (C), which is the proportion of crime occurring in a location less than 500 m from the associated cluster. Through a data analysis of crimes and violence in the region, this study seeks to identify patterns of criminal behaviour and high-risk areas to determine the most strategic locations for police units and enhance the public security decision-making process. The choice for the k parameters ranged from 1 to 30, incorporating all regions of the analysis, with a computational cost of 43 min of running time using an Intel Core i3-3217U (1800 GHz and 10 GB of RAM). This approach and methodology can be useful for supporting public security policies in the region and can contribute to reducing violence around stadiums. The empirical application can help guide public managers’ decisions regarding resource allocation and the implementation of more effective security policies, with the aim of ensuring a safer environment for fans and residents in the areas near stadiums.
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- 2023
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175. Optimizing Instrument Transformer Performance through Adaptive Blind Equalization and Genetic Algorithms
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Denise Fonseca Resende, Leandro Rodrigues Manso Silva, Erivelton Geraldo Nepomuceno, and Carlos Augusto Duque
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adaptive channel equalization ,blind equalization ,genetic algorithm ,instrument transformers ,power quality ,Technology - Abstract
In real-world scenarios, deviations in the frequency response of instrumentation transformers can lead to distorted harmonic measurements, highlighting the critical role harmonic measurement plays in assessing power quality. The blind channel equalization technique offers a potential solution to improve the frequency response of a large number of instrumentation transformers already installed in substations. These transformers were designed to accurately measure only the fundamental phasor component. Therefore, in order to use them for harmonic phasor measurement, methodologies for reducing frequency distortion must be applied. In this work, we propose a novel approach to improve the frequency response of the instrument transformer using adaptive blind equalization. The blind technique can compensate for distortions caused by voltage and current transducers without requiring prior knowledge of input signals or circuit characteristics. The proposed methodology uses a Linear Prediction Filter to convert the colored noise present at the channel output into white noise. Furthermore, a genetic algorithm is used to find a pole to cancel possible zeroes present in the frequency response of some transducers. The main advantage of blind equalization with the genetic algorithm is its independence, operating without clear information about the channel or the input signal. Through extensive experimentation, we demonstrate the effectiveness of the proposed methodology in significantly reducing the absolute error in ratio and phase caused by current and voltage transformers. Simulated and laboratory experiments are presented in this paper.
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- 2023
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176. Habits and Persistent Food Restriction in Patients with Anorexia Nervosa: A Scoping Review
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Ismara Santos Rocha Conceição, David Garcia-Burgos, Patrícia Fortes Cavalcanti de Macêdo, Carina Marcia Magalhães Nepomuceno, Emile Miranda Pereira, Carla de Magalhães Cunha, Camila Duarte Ferreira Ribeiro, and Mônica Leila Portela de Santana
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eating disorders ,cognitive neuroscience ,habit ,anorexia nervosa ,food restriction ,scoping review ,Psychology ,BF1-990 - Abstract
The aetiology of anorexia nervosa (AN) presents a puzzle for researchers. Recent research has sought to understand the behavioural and neural mechanisms of these patients’ persistent choice of calorie restriction. This scoping review aims to map the literature on the contribution of habit-based learning to food restriction in AN. PRISMA-ScR guidelines were adopted. The search strategy was applied to seven databases and to grey literature. A total of 35 studies were included in this review. The results indicate that the habit-based learning model has gained substantial attention in current research, employing neuroimaging methods, scales, and behavioural techniques. Food choices were strongly associated with dorsal striatum activity, and habitual food restriction based on the self-report restriction index was associated with clinical impairment in people chronically ill with restricting AN. High-frequency repetitive transcranial magnetic stimulation (HF-rTMS) and Regulating Emotions and Changing Habits (REaCH) have emerged as potential treatments. Future research should employ longitudinal studies to investigate the time required for habit-based learning and analyse how developmental status, such as adolescence, influences the role of habits in the progression and severity of diet-related illnesses. Ultimately, seeking effective strategies to modify persistent dietary restrictions controlled by habits remains essential.
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- 2023
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177. Analysis of Epidemiological Factors and SNP rs3804100 of TLR2 for COVID-19 in a Cohort of Professionals Who Worked in the First Pandemic Wave in Belém-PA, Brazil
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Marcos Jessé Abrahão Silva, Caroliny Soares Silva, Rebecca Lobato Marinho, Jeanne Gonçalves Cabral, Ellen Polyana da Costa Gurrão, Pabllo Antonny Silva dos Santos, Samir Mansour Moraes Casseb, Karla Valéria Batista Lima, and Luana Nepomuceno Gondim Costa Lima
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TLR2 ,single nucleotide polymorphism ,COVID-19 ,epidemiology ,Genetics ,QH426-470 - Abstract
COVID-19 is an infectious disease caused by coronavirus 2 of the severe acute syndrome (SARS-CoV-2). Single nucleotide polymorphisms (SNPs) in genes, such as TLR2, responsible for an effective human immune response, can change the course of infection. The objective of this article was to verify associations between epidemiological factors and TLR2 SNP rs3804100 (Thymine [T] > Cytosine [C]) in professionals from Health Institutions (HI) who worked during the first pandemic wave and COVID-19. A case-control study was conducted with Belém-PA HI workers (Northern Brazil), divided into symptomatology groups (Asymptomatic-AS; n = 91; and Symptomatic-SI; n = 123); and severity groups classified by Chest Computerized Tomography data (symptomatic with pulmonary involvement—SCP; n = 35; symptomatic without pulmonary involvement—SSP; n = 8). Genotyping was performed by Sanger sequencing, and Statistical Analysis was conducted through the SPSS program. Bioinformatics servers predicted the biological functions of the TLR2 SNP. There were associations between the presence of comorbidities and poor prognosis of COVID-19 (especially between symptomatology and severity of COVID-19 and overweight and obesity) and between the sickness in family members and kinship (related to blood relatives). The homozygous recessive (C/C) genotype was not found, and the frequency of the mutant allele (C) was less than 10% in the cohort. No significant associations were found for this SNP in this cohort. The presence of SNP was indicated to be benign and causes a decrease in the stability of the TLR2 protein. These data can help the scientific community and medicine find new forms of COVID-19 containment.
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- 2023
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178. Strategies for monitoring within-field soybean yield using Sentinel-2 Vis-NIR-SWIR spectral bands and machine learning regression methods
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Crusiol, L. G.T., Sun, Liang, Sibaldelli, R. N.R., Junior, V. Felipe, Furlaneti, W. X., Chen, R., Sun, Z., Wuyun, D., Chen, Z., Nanni, M. R., Furlanetto, R. H., Cezar, E., Nepomuceno, A. L., and Farias, J. R.B.
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- 2022
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179. Reinforcement learning for the traveling salesman problem with refueling
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Ottoni, André L. C., Nepomuceno, Erivelton G., Oliveira, Marcos S. de, and Oliveira, Daniela C. R. de
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- 2022
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180. Two distinct mechanisms underlie estrogen-receptor-negative breast cancer susceptibility at the 2p23.2 locus
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Mendoza-Fandiño, Gustavo, Lyra, Jr, Paulo Cilas M., Nepomuceno, Thales C., Harro, Carly M., Woods, Nicholas T., Li, Xueli, Rangel, Leticia B., Carvalho, Marcelo A., Couch, Fergus J., and Monteiro, Alvaro N. A.
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- 2022
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181. Savannas of the Brazilian semiarid region: what do we learn from floristics?
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Izaíra Vasconcelos Nepomuceno, Elnatan Bezerra de Souza, Daniela Cristina Zappi, Marcela Cruz Moreira, Francisco Álvaro Almeida Nepomuceno, and Marcelo Freire Moro
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Brazil ,Cerrado ,floristics ,savanna ,semiarid ,therophytes ,vegetation comparisons ,Botany ,QK1-989 - Abstract
ABSTRACT The Cerrado represents the largest extension of savanna in South America. It occupies large stretches of central Brazil, being fragmented towards the Northeast, Southeast, and South regions of the country. Examples of disjunct patches of vegetation with savanna physiognomy within the Caatinga can be found in the Chapada Diamantina, the Chapada do Araripe, in small areas of southern Ceará State, and also in the coastal plains. This study recorded the floristic composition of four savannas within the Caatinga in northern Ceará State and evaluated the floristic relationships between these and other savannas, Cerrado and Caatinga sites. Periodic floristic collections recorded 247 species distributed among 162 genera and 55 families. Fifty-seven percent of the recorded species were of herbaceous or sub-shrubby habit, while the majority of the flora was of the therophytic life-form. Biogeographic analyses revealed that the study sites differ from typical Cerrado in flora and life-form spectra and have closer floristic relationships with Caatinga vegetation. The presence of floristic elements from the Cerrado, together with species from the Caatinga, in the study sites allows us to conclude that these savanna enclaves in the Caatinga are composed of a mixed flora with typical elements of these two Brazilian biomes.
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- 2021
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182. Decimation analysis in the signal processing of current to detect broken bars in induction machine
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Moreira, J. S., Filho, P. C. M. Lamim, Baccarini, L. M. R., Nepomuceno, E. G., and Guedes, P. F. S.
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Electrical Engineering and Systems Science - Signal Processing - Abstract
This paper presents a study on the reduction of the sampling frequency of the current signals of an induction motor, the reductions are performed by means time-decimation technique for digital signal processing. We have used the Fast Fourier Transform to obtain the fault signal spectrum of broken bars. The results have shown how the decimation technique significantly reduces the number of operations and the time required to calculate the Fast Fourier Transform without loss of information. This approach provides a better performance of embedded systems for fault diagnosis based on characteristic of amplitude signal modulation., Comment: in Portuguese
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- 2018
183. Interval Simulation of Narmax Models Based on Computer Arithmetic
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Guedes, P. F. S., Peixoto, M. L. C., Freitas, O. A. R. O., Barbosa, A. M., Martins, S. A. M., and Nepomuceno, E. G.
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Electrical Engineering and Systems Science - Signal Processing - Abstract
System identification is an important area of science, which aims to describe the characteristics of the system, representing them by mathematical models. Since many of these models can be seen as recursive functions, it is extremely important to control the errors in these functions, because small errors introduced in each computational step can grow exponentially due to the sensitivity to initial conditions present in this type of functions. One of the ways to control rounding and truncation errors is through interval arithmetic, since it is not possible to represent all numbers in the computer because of the finite representation in them. Thus, in arithmetic interval a number is represented by an interval in which the true number is within that interval. In this manuscript we developed an algorithm that performs the operations of interval arithmetic using basic functions. We have compared compared our results with the Matlab-toolbox Intlab. Numerical experiments have shown that our method is superior producing narrower intervals., Comment: CBA 2018 - XXII Congresso Brasileiro de Automatica, Joao Pessoa, p. 1-6
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- 2018
184. Possible GeV counterpart at the ground level associated with Fermi LAT gamma-ray bursts
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Augusto, C. R. A., Navia, C. E., de Oliveira, M. N., Nepomuceno, A., Kopenkin, V., and Sinzi, T.
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Astrophysics - High Energy Astrophysical Phenomena - Abstract
From June 2014 to February 2017, the Fermi LAT detected 46 gamma-ray bursts (GRBs) with photon energies above 20 MeV, and the trigger coordinates of seven of them were within the FoV of New-Tupi detector located in the central region of the South Atlantic Anomaly (SAA). We show in this paper that two of these seven GRBs have a probable GeV counterpart observed at ground level by New-Tupi detector. The first is GRB 160609A, a short duration GRB with a bright emission of photons over a broad energy range extending up to GeV energies. The second is GRB 160625B, a very long duration GRB, for which the Fermi LAT detected more than 300 photons with energies above 100 MeV in the $\sim$ 1 ks interval after the GBM trigger. In the first case, the signal at New-Tupi has a nominal significance of $3.5\sigma$ in the counting rate time profiles, within the T90($=5.6$ s) duration on Fermi GBM. However, the effective significance is only $3.0\sigma$. In the second case, New-Tupi detector registered at least two excess (peaks) with a nominal statistical significance of $4.8\sigma$ and $5.0\sigma$ at 438 s and 558 s after the trigger. The first is within the $T90(=460$ s) on Fermi GBM. Even so, the effective significance is only $\sim 2.0\sigma$. In addition, from a Monte Carlo analysis, we show that the expected signal-to-noise ratio is compatible with the observation of GRB 160709A, only if the differential index of the GRB energy spectrum be equal or higher than -2.2 (a non-steep spectrum)., Comment: 25 pages, 14 figures. Accepted in J. Phys. Commun
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- 2018
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185. When Penalty Fails: Modeling Contractual Misincentives With Evidence From Portugal ITO Agreements
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Thyago Celso Cavalcante Nepomuceno, Késsia Thais Cavalcanti Nepomuceno, Thiago Poleto, Victor Diogho Heuer de Carvalho, and Ana Paula Cabral Seixas Costa
- Subjects
History of scholarship and learning. The humanities ,AZ20-999 ,Social Sciences - Abstract
A misincentive is characterized as an incentive producing the opposite effect of motivating or preventing some specific action. In some circumstances, contract penalties such as sanctions and fines on late delivery or low-quality software encourage the irregularities instead of preventing them from occurring. The present study models misincentive behaviors in Information Technology Outsourcing (ITO) transactions as a Principal-Agent problem. Considering the non-linear relationship in software vendors’ cost structure and the client’s sensitivity to the product/service quality and delivery time, we offer theoretical modeling elucidating the best responses on agreements under incomplete and asymmetric information. Some empirical evidence of contractual misincentives is reported in outsourcing arrangements between private institutions and public administrations in Portugal. The contracts were divided into three categories: pure contracts with no incentive clauses, contracts with no explicit monetary penalties, and contracts under explicit sanctions. The results suggest that the knowledge of the penalty reduces the Agent’s uncertainty about the Principal’s cost structure and might lead them to intentionally delay the delivery of the technology.
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- 2022
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186. The 2015 Summer Solstice Storm: one of the major geomagnetic storms of solar cycle 24 observed at ground level
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Augusto, C. R. A., Navia, C. E., de Oliveira, M. N., Nepomuceno, A. A., Raulin, J. P., Tueros, E., de Mendonça, R. R., Fauth, A. C., de Souza, H. Vieira, Kopenkin, V., and Sinzi, T.
- Subjects
Astrophysics - Solar and Stellar Astrophysics - Abstract
We report on the 22-23 June 2015 geomagnetic storm. There has been a shortage of intense geomagnetic storms during the current solar cycle 24 in relation to the previous cycle. This situation changed after mid-June 2015 when one of the biggest solar active regions (AR 2371) of current solar cycle 24, close to the central meridian produced several coronal mass ejections (CMEs) associated with M-class flares. The CMEs impact on the Earth's magnetosphere resulted in a moderately-severe G4-class geomagnetic storm on 22-23 June 2015 and a G2 (moderate) geomagnetic storms on 24 June. The G4 solstice storm was the second biggest (so far) geomagnetic storms of cycle 24. We highlight the ground level observations made by New-Tupi, Muonca and the CARPET El Leoncito cosmic ray detectors that are located within the South Atlantic Anomaly (SAA) region. These observations are studied in correlation with data obtained by space-borne detectors and other ground-based experiments. The CME designations are from the Computer Aided CME Tracking (CACTus) automated catalog. As expected, Forbush Decreases (FD) associated with the passing CMEs were recorded by these detectors. We noticed a peculiar feature linked to a severe geomagnetic storm event. The 21 June 2015 CME 0091 was likely associated with the 22 June summer solstice FD event. The angular width of CME 0091 was very narrow and measured 56 degrees seen from Earth. In most cases, only CME halos and partial halos, lead to severe geomagnetic storms. We performed a cross-check analysis of the FD events detected during the rise phase of the current solar cycle 24, the geomagnetic parameters, and the CACTus CME catalog. Our study suggests that narrow angular-width CMEs that erupt in the western region of the ecliptic plane can lead to moderate and severe geomagnetic storms., Comment: 20 pages, 14 figures, accepted in Solar Physics
- Published
- 2018
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187. Relativistic proton levels from region AR 12673 (GLE \#72) and the heliospheric current sheet as a Sun$-$Earth magnetic connection
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Augusto, C. R. A., Navia, C. E., de Oliveira, M. N., Nepomuceno, A. A., Fauth, A. C., Kopenkin, V., and Sinzi, T.
- Subjects
Astrophysics - Solar and Stellar Astrophysics ,Physics - Space Physics - Abstract
On 2017 September 10 Neutron Monitors (NMs) apparatus located at ground level and high latitudes detected an increase in the counting rate associated to solar energetic particles (SEPs) emission from X8.2-class solar flare and its associated CME. This was the second-highest flare of the current solar cycle. The origin was the active region AR 12673 when it was located at the edge of the west solar disk, magnetically poorly connected with Earth. However, there was a peculiar condition: the solar protons accelerated by the CME shocks were injected within a heliospheric current sheet (HCS) region when Earth was crossing this region. We show that often HCS and SEPs propagation are closely related. If the source locations of SEPs are within or close to HCS, the HCS play the role of a Sun$-$Earth magnetic connection. SEPs drift around HCS paths, and SEPs are also drift in a wide range of longitudes by the HCSs. In some cases, and especially when Earth crosses the HCS sector, a fraction of these particles can reach Earth with a harder energetic particle flux, triggering a ground-level enhancement (GLE). The blast on 2017 September 10, which triggered the GLE \#72, was the second in the current solar cycle. We show that the two GLEs, including all sub-GLEs observed in the current solar cycle, comes from solar explosions that happened within an HCS structure; this behavior is also observed in the GLEs of the previous solar cycle. In general, solar explosions from active regions poorly connected with Earth can trigger GLEs, through the mechanism described above. In all cases, the SEPs drift processes by HCS structures provides an efficient particle transport, allowing the observation of these solar transient events., Comment: 14 pages, 13 figures. Published in Publications of the Astronomical Society of the Pacific
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- 2018
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188. Torsion Limits From $t\bar{t}$ Production at the LHC
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Marroquim, Fernando, de Andrade, Fernando, Vale, Maria A. B. do, and Nepomuceno, Andre
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High Energy Physics - Phenomenology - Abstract
Torsion models constitute a well known class of extended quantum gravity models. In this work, one investigates the phenomenological consequences of a torsion field interacting with top quarks at the LHC. A torsion field could appear as a new heavy state characterized by its mass and couplings to fermions. This new state would form a resonance decaying into a top anti-top pair. The latest ATLAS $t\bar t$ production results from LHC 13 TeV data are used to set limits on torsion parameters. The integrated luminosity needed to observe torsion resonance at the next LHC upgrades are also evaluated, considering different values for the torsion mass and its couplings to Standard Model fermions. Finally, prospects for torsion exclusion at the future LHC phases II and III are obtained using fast detector simulations.
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- 2017
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189. Synchronization on the accuracy of chaotic oscillators simulations
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Silva, Gabriel H. A., Silva, Igor C., Junior, Wilson R. L., Martins, Samir A. M., Barroso, Marcio F. S., and Nepomuceno, Erivelton G.
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Electrical Engineering and Systems Science - Signal Processing ,Nonlinear Sciences - Chaotic Dynamics - Abstract
Numerical problems are considered on general synchronization of chaotic oscillators, through the evaluation of the Lower Bound Error index on two case studies: a Lorenz system unidirectionally coupled to a Duffing system and a Duffing system unidirectionally coupled to a Rossler system. It was possible to observe, in each case, that the behavior of the slave's LBE curve tends to follow the behavior of the master's as the value of the coupling constant is increased up to a certain value, and thus, that synchronization can affect numerical calculations., Comment: DINCON 2017 - Conferencia Brasileira de Dinamica, Controle e Aplicacoes - Sao Jose do Rio Preto - Brazil. 8 pages
- Published
- 2017
190. A rigorous evaluation of the intermittence in the logistic map using lower bound error
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Oliveira, Marcella N. R. and Nepomuceno, Erivelton G.
- Subjects
Electrical Engineering and Systems Science - Signal Processing - Abstract
This article investigates the maximum time of simulation in which the phenomenon of the intermittence can be observed with numerical confidence in discrete maps. Interval analysis and the lower error limit were used. As a result, it was observed that the reliability of the intermittency is dependent on the initial condition. Four numerical examples show the efficiency of the proposal., Comment: DINCON 2017 - Conferencia Brasileira de Dinamica, Controle e Aplicacoes - Sao Jose do Rio Preto - Brazil. 7 pages. In Portuguese
- Published
- 2017
191. Note on improvement precision of recursive function simulation in floating point standard
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Silva, Melanie R., Nepomuceno, Erivelton G., and Martins, Samir A. M.
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Electrical Engineering and Systems Science - Signal Processing - Abstract
An improvement on precision of recursive function simulation in IEEE floating point standard is presented. It is shown that the average of rounding towards negative infinite and rounding towards positive infinite yields a better result than the usual standard rounding to the nearest in the simulation of recursive functions. In general, the method improves one digit of precision and it has also been useful to avoid divergence from a correct stationary regime in the logistic map. Numerical studies are presented to illustrate the method., Comment: DINCON 2017 - Conferencia Brasileira de Dinamica, Controle e Aplicacoes - Sao Jose do Rio Preto - Brazil. 8 pages
- Published
- 2017
192. On the Constructing Bifurcation Diagram of the Quadratic Map With Floating-Point Arithmetic
- Author
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Nazare, Thalita E., Nepomuceno, Erivelton G., and Paiva, Bruno P. O.
- Subjects
Electrical Engineering and Systems Science - Signal Processing - Abstract
This paper presents an analysis on the effects of floating-point arithmetic on the constructing bifurcation diagram of the quadratic map. More precisely, we are interested in showing the dependence of initial conditions to obtain some specific features of the diagram. With this study, it was possible to observe that when there is a restriction regarding the initial condition, the results present aspects with significant differences of the ones found in the literature regarding the behaviour of the map, consequently there is a considerable modification in its bifurcation diagram. We show that these difference are related to floating-point arithmetic, Comment: 6th International Conference on Nonlinear Dynamics, Chaos, Control and Applications (ICONNE 2017). Curitiba - Brazil. 6 pages
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- 2017
193. Chaos suppression of Lorenz Systems by means on the average of rounding modes
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Silva, Melanie R., Nepomuceno, Erivelton G., and Martins, Samir A. M.
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Electrical Engineering and Systems Science - Signal Processing - Abstract
This work deals with chaos suppression based on average of the rounded modes to negative and positive infinite. The present procedure acts to reduce the rounding errors. It was observed that when the method proposed in this paper is applied to the chaotic Lorenz's system, it exhibits a periodic behaviour, characterized by a limit cycle and negative largest Lyapunov exponent. We tested our approach using three discretization schemes based on Runge-Kutta method, Comment: DINCON 2017 - Conferencia Brasileira de Dinamica, Controle e Aplicacoes - Sao Jose do Rio Preto - Brazil. 8 pages
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- 2017
194. Incorporating Numerical Uncertainties for Validation of Nonlinear Models
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Silva, Igor C., Silva, Gabriel H. A., Martins, Samir A. M., and Nepomuceno, Erivelton G.
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Electrical Engineering and Systems Science - Signal Processing - Abstract
This paper proposes a model validation method that incorporates error due to numerical procedures. Two identified models for Sine Map and Duffing-Ueda Circuit systems have been investigated. The indexes RMSE and MAPE have been applied. We have shown that after some few iterates, it is possible to notice some significative difference between index provided in the literature. This difference has been computed in around 34%., Comment: DINCON 2017 - Conferencia Brasileira de Dinamica, Controle e Aplicacoes - Sao Jose do Rio Preto - Brazil. 7 pages. In Portuguese
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- 2017
195. The Lower Bound Error for polynomial NARMAX using an Arbitrary Number of Natural Interval Extensions
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Guedes, Priscila F. S., Peixoto, M. L. C., Barbosa, A. M., Martins, S. A. M., and Nepomuceno, E. G.
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Electrical Engineering and Systems Science - Signal Processing - Abstract
The polynomial NARMAX (Nonlinear AutoRegressive Moving Average model with eXogenous input) is a model that represents the dynamics of physical systems. This polynomial contains information from the past of the inputs and outputs of the process, that is, it is a recursive model. In digital computers this generates the propagation of the rounding error. Our procedure is based on the estimation of the maximum value of the lower bound error considering an arbitrary number of pseudo-orbits produced from different natural interval extensions, and a posterior Lyapunov exponent calculation. We applied successfully our technique for two identified models of the systems: sine map and Duffing-Ueda oscillator, Comment: DINCON 2017 - Conferencia Brasileira de Dinamica, Controle e Aplicacoes. Sao Jose do Rio Preto. Brazil. 7 pages
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- 2017
196. Analysis of RLD Circuit by means of Phase Space with a non-ideal diode model
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Peixoto, Marcia L. C., Nepomuceno, Erivelton G., and Martins, Samir A. M.
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Computer Science - Systems and Control - Abstract
In this work the non-linear and chaotic behaviour for the RLD circuit is analysed, which is modelled by state space and numerically simulated considering the diode model an association between nonlinear resistances and capacitances. It has been possible to characterize the dynamics of the circuit through period doubles and chaotic behaviour. The Lyapunov exponent is calculated to show the chaotic behaviour of this circuit. Simulated results are in good agreement with experimental data., Comment: DINCON 2017 - Conferencia Brasileira de Dinamica, Controle e Aplicacoes - Sao Jose do Rio Preto - Brazil. 7 pages. In Portuguese
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- 2017
197. Estimating the Largest Lyapunov Exponent Based on Conditional Number
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Silva, Pedro H. O., Borges, Vinícius da Silva, Guedes, Priscila F. S., Silva, Igor C., and Nepomuceno, Erivelton G.
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Nonlinear Sciences - Chaotic Dynamics - Abstract
The Lyapunov exponent is used to characterize the stability of the dynamic response of the system, and it is often employed to verify if a system is chaotic. Since its discovery in the nineteenth century, various methods have been proposed and developed for its calculation. The present work proposes a method for the calculation of the largest Lyapunov exponent, based on conditional number of the function, which describes the loss of bits in the simulation based on relative rounding error. Four discrete maps are used to show the effectiveness of the proposed method., Comment: DINCON 2017 - Conferencia Brasileira de Dinamica, Controle e Aplicacoes - Sao Jose do Rio Preto - Brazil. 7 pages
- Published
- 2017
198. Psychometric Properties of the Dyadic Coping Inventory: Systematic Review
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Wanderson Ricardo Nepomuceno, Aline da Silva Gonçalves, and José Augusto Evangelho Hernandez
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systematic review ,dyadic coping inventory ,psychometrics ,Psychology ,BF1-990 - Abstract
This systematic review study analyzed the evidence of validity of the Dyadic Coping Inventory’s internal structure. This instrument measures the quality of communication and the strategies of marital coping in face of the stress experienced. Stress can affect the stability and maintenance of marital relationships depending on how it is faced by the couple. The measure is a reduced version of the Dyadic Coping Questionnaire and has been applied to various cultural contexts. This research study was registered at the International Prospective Register of Systematic Reviews database. Searches for publications were made on the Capes' Portal Periódico and Google Scholar, not refining the results. Two independent researchers selected, extracted, and evaluated the data. For the validity analysis of the internal structure, the Standards for Education and psychological Testing were consulted. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses Statement was used to summarize the review. Of the 722 studies found, 15 were selected, from the Scopus, Web of Science, John Wiley & Sons, Directory of Open Access Journals, DergiPark, Pubmed and Taylor & Francis Online databases. All articles included were quantitative, cross-sectional and peer reviewed studies, mostly carried out in Europe and in 14 different languages. Despite variations in the number of factors and items, the instrument has shown to be stable and invariant across genders and cultures. These results suggested a reliable score to measure Dyadic Coping. This review can contribute to clinical practice and research in marital and family relationships.
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- 2022
- Full Text
- View/download PDF
199. Ultrasonographic findings of abdominal thrombosis in dogs
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I.P. Souza, P.C.O. Pinto, N.G.D. Coelho, R.S. Prestes, R.C.S. Torres, and A.C. Nepomuceno
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canine ,diagnostic imaging ,thrombus ,Animal culture ,SF1-1100 - Abstract
ABSTRACT This retrospective case series study describes the clinical and vascular ultrasound findings of 26 dogs diagnosed with abdominal thrombosis. Images were selected based on the detection of intravascular echogenic thrombus or the absence of vascular flow on color Doppler, confirmed by surgery or necropsy. Images were acquired using the Mylab 40 model, with linear and microconvex multifrequency probes. All the reports were evaluated along with the corresponding images by a veterinary diagnostic imaging radiologist. The ultrasonographic aspects evaluated were echogenicity (92.3%), anechogenicity (7.7%), vascularization (11.5%), mineralization (15.4%), and recanalization (7.7%) of the thrombosis. The vascular and hemodynamic findings were dilation of the affected vein (57.7%), total occlusion of blood flow (30.8%), presence of turbulent flow (65.38%), and visualization of smoke signal (blood flow detected as moving echogenic points in dynamic bidimensional mode) (11.5%). Neoplasms (19 cases) and nephropathies (13 cases) were the most common clinical conditions in the affected dogs. Eleven cases of vascular invasion due to adrenal neoplasms were identified. The results indicate that the vascular ultrasound examination is an important method for diagnosis, as 23 of the 26 cases did not show any clinical signs of thrombosis.
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- 2022
- Full Text
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200. The role of resilience in the relationship between stress and job satisfaction
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Karlene Minely Nepomuceno Silva and Marcia Juliana d'Angelo
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resiliência ,estresse laboral ,satisfação no trabalho ,funcionários mais velhos ,Management. Industrial management ,HD28-70 ,Business ,HF5001-6182 - Abstract
This study examines the mediating effect of resilience on the relationship between work stress and job satisfaction. It is quantitative research with a sample of 418 workers from companies that operate in Brazil, analyzed through structural equation modeling and permutation analysis. The results show that resilience contributes to reducing the impacts of job stress on job satisfaction, indicating that the development and improvement of resilience should be encouraged in organizations so that employees can face adversity. Regarding the differences between millennials (up to 29 years old) and post-millennials (over 29 years old), the evidence shows that older employees can be more resilient; they deal better with colleagues and challenging situations and unexpected and accept challenges that contribute to professional growth. This study’s main theoretical contribution is the development of quantitative empirical research that relates labor stress and job satisfaction (consequent) influenced by resilience in a parsimonious model, not yet considered in the literature.
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- 2022
- Full Text
- View/download PDF
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