Produção Nacional
André Luíz Firmino Alves, Cláudio de Souza Baptista, Anderson Almeida Firmino, Maxwell Guimarães de Oliveira, Anselmo Cardoso de Paiva,
The widespread of social communication media in the Web has produced a large volume of opinionated textual data stored in digital format. Social media constitutes a rich source for sentiment analysis and understanding of the opinions spontaneously expressed. Many scientific proposals have arisen in the last years aiming to deal with sentiment analysis issues. However, most of them do not address both spatial and temporal dimensions that enable a more accurate analysis and a better understanding ...
Tópico(s): Complex Network Analysis Techniques
2015 - | Journal of Information and Data Management
Produção Nacional
Revisado por pares
Wellington Emanuel dos Santos, Liedson Tavares Carneiro, Ana Claudia Firmino Alves, Antônio José Creão-Duarte, Celso Feitosa Martins,
The association of stingless bees with pig carcasses exposed in a Brazilian Dry Forest area were examined. Modified Shannon traps were settled together to collect these insects during two seasons (dry and rainy). 564 bees were collected, belonging to three tribes and nine species. The majority of bees (75.5%) was collected during the dry season, and Partamona seridoensis Pedro & Camargo (32.8%) and Trigonisca sp. (20.9%) were the most abundant species. Five decomposition stages were recognized, being ...
Tópico(s): Bee Products Chemical Analysis
2014 - UNIVERSIDADE ESTADUAL DE FEIRA DE SANTANA | Sociobiology
Produção Nacional
Revisado por pares
Paulo S. G. de Mattos Neto, Paulo Renato Alves Firmino, Hugo Valadares Siqueira, Yara de Souza Tadano, Thiago Antonini Alves, João Fausto Lorenzato de Oliveira, Manoel H. N. Marinho, Francisco Madeiro,
The air pollution caused by particulate matter (PM) has become a public health issue due to the risks to human life and the environment. The PM concentration in the air causes haze and affects the lungs and the heart, leading to reduced visibility, allergic reactions, pneumonia, asthma, cardiopulmonary diseases, lung cancer, and even death. In this context, the development of systems for monitoring, forecasting, and controlling emissions plays an important role. The literature about forecasting systems ...
Tópico(s): Energy Load and Power Forecasting
2021 - Institute of Electrical and Electronics Engineers | IEEE Access
Produção Nacional
Wellington Emanuel dos Santos, Ana Claudia Firmino Alves, Rodrigo César Azevedo Pereira Farias, Antônio José Creão-Duarte,
The ecological roles of Coleoptera fauna associated with pig carcasses exposed in a Caatinga area were examined. Tray, pitfall and modified Shannon traps were settled together to collect these insects during two seasons (dry and rainy). 4,851 beetles were collected, belonging to 19 families and 88 species. The most abundant ecological category was predator/parasite (72.7%), followed by omnivorous (15.1%), necrophagous (10.9%) and incidental (1.3%). Future researches on the biology of predator/parasite ...
Tópico(s): Insect and Pesticide Research
2013 - Entomologistas do Brasil | EntomoBrasilis
Produção Nacional
Revisado por pares
M.I. Silva, A. Manuela Gonçalves, Wângeska Alves Vieira Lopes, Mirelle Tainá Vieira Lima, Celme Torres Ferreira da Costa, Marta Paris, Paulo Renato Alves Firmino, Francisco José de Paula Filho,
Globally speaking, groundwater is the predominant source of water for populations living in arid and semiarid regions. The tools used to assess the quality of this resource contribute to the water security of the populations that depend on it. This study evaluated the quality of groundwater sampled from 22 monitored wells in the Araripe Sedimentary Basin (ASB), located in the Brazilian semiarid region. We used probability curves to identify the critical variables and a regional Water Quality Index ( ...
Tópico(s): Groundwater and Isotope Geochemistry
2021 - Elsevier BV | Journal of Hydrology
Produção Nacional
Revisado por pares
Paulo Renato Alves Firmino, Jair Paulino de Sales, Jucier Gonçalves Júnior, Taciana Araújo da Silva,
Government, researchers, and health professionals have been challenged to model, forecast, and evaluate pandemics time series (e.g. new coronavirus SARS-CoV-2, COVID-19). The main difficulty is the level of novelty imposed by these phenomena. Information from previous epidemics is only partially relevant. Further, the spread is local-dependent, reflecting a number of social, political, economic, and environmental dynamic factors. The present paper aims to provide a relatively simple way to model, ...
Tópico(s): Data-Driven Disease Surveillance
2020 - Elsevier BV | Chaos Solitons & Fractals
Produção Nacional
Daniela Vantil Agrizzi, Roberto Avelino Cecílio, Sidney Sára Zanetti, Giovanni de Oliveira Garcia, Atanásio Alves do Amaral, Elziane Favoreto Alves Firmino, Natália Gomes de Souza Mendes,
RESUMO Este estudo teve por objetivo avaliar a influência de diferentes usos do solo no entorno de nascentes sobre alguns parâmetros de qualidade das águas de oito nascentes localizadas no Assentamento Paraíso, Alegre, Espírito Santo. As nascentes avaliadas consistiram em uma em meio à floresta remanescente de Mata Atlântica; seis cercadas e em diferentes estágios de recomposição florestal; e uma sem cerca e com acesso livre dos animais de criação. Três amostras de água foram coletadas em cada nascente ...
Tópico(s): Environmental and biological studies
2018 - Brazilian Association of Sanitary and Environmental Engineering | Engenharia Sanitaria e Ambiental
Produção Nacional
Revisado por pares
Ricardo Tavares Antunes de Oliveira, Thaíze Fernandes O. de Assis, Paulo Renato Alves Firmino, Tiago A. E. Ferreira,
Time series combined forecasters have been superior to the respective single models in statistical terms. In this way, the linear combination functions, e.g. the simple average (SA) and the minimal variance (MV) approaches, have been the main alternatives for aggregation in the literature. In this work, it is presented a copulas-based method for combining biased single models. Copulas are multivariate functions that operate on marginal probability distributions and have the specific advantage of generalizing ...
Tópico(s): Advanced Statistical Methods and Models
2016 - Elsevier BV | Information Sciences
Produção Nacional
Revisado por pares
Márcio das Chagas Moura, Enrique López Droguett, Paulo Renato Alves Firmino, Ricardo José Ferreira,
This article develops a model for dependent and imperfect condition–based preventive and corrective maintenance actions. The approach is based on the combination of the intensity proportional repair alert, a competing risks-based model and the generalized renewal process. Typically, intensity proportional repair alert can identify either how preventive actions may modify the distribution of the time between critical failures or how corrective events may change the frequency of preventive maintenances, ...
Tópico(s): Risk and Safety Analysis
2014 - SAGE Publishing | Proceedings of the Institution of Mechanical Engineers Part O Journal of Risk and Reliability
Produção Nacional
Revisado por pares
Paulo Renato Alves Firmino, Paulo S. G. de Mattos Neto, Tiago A. E. Ferreira,
In time series forecasting exercises it has been usual to suppose that the error series generated by the forecasters have a white noise behavior. However, it is possible that such supposition is violated in practice due to model misspecification or disturbances of the phenomenon not captured by the predictive models. It may lead to statistically biased and/or inefficient predictors. The present paper introduces an approach to correct predetermined forecasters by recursively modeling their remaining ...
Tópico(s): Energy Load and Power Forecasting
2014 - Elsevier BV | Neurocomputing
Produção Nacional
Revisado por pares
Paulo Renato Alves Firmino, Paulo S. G. de Mattos Neto, Tiago A. E. Ferreira,
Combined forecasters have been in the vanguard of stochastic time series modeling. In this way it has been usual to suppose that each single model generates a residual or prediction error like a white noise. However, mostly because of disturbances not captured by each model, it is yet possible that such supposition is violated. The present paper introduces a two-step method for correcting and combining forecasting models. Firstly, the stochastic process underlying the bias of each predictive model ...
Tópico(s): Energy Load and Power Forecasting
2013 - Elsevier BV | Neural Networks
Produção Nacional
Eduardo Calixto, Gílson Brito Alves Lima, Paulo Renato Alves Firmino,
Human factors always affect maintenance performance, and in some cases, it’s critical to systems availability and reliability. Despite such importance, in so many cases, there’s no human reliability method applied to analyze maintenance tasks in order to understand better human factors influence in maintenance performance. There are several human analysis methodologies and regarding human factors, SLIM (Successes Likelihood Methods), SPAR-H (Standardized Plant Analysis Risk-Human Reliability Analysis ...
Tópico(s): Software Reliability and Analysis Research
2013 - Scientific Research Publishing | Open Journal of Safety Science and Technology
Produção Nacional
Revisado por pares
Maria Betânia Lins Dantas Siqueira, Ramon Targino Firmino, Marayza Alves Clementino, Carolina Castro Martins, Ana Flávia Granville‐Garcia, Saul Martins Paiva,
This study aimed to assess the impact of traumatic dental injury (TDI) on the quality of life of preschoolers and their families. A cross-sectional study was carried out, with a sample of 814 children, aged three to five years old, in Campina Grande, Brazil. Parents/caregivers were asked to complete the Brazilian Early Childhood Oral Health Impact Scale and a questionnaire on socio-demographic data. Oral examinations of the children were performed by three previously calibrated dentists. Bivariate ...
Tópico(s): Injury Epidemiology and Prevention
2013 - Multidisciplinary Digital Publishing Institute | International Journal of Environmental Research and Public Health
Produção Nacional
Revisado por pares
Daniella Junko Itinoseki Kaio, Patrícia Helen de Carvalho Rondó, Jos eacute Maria Pacheco SOUZA, Aline Vale FIRMINO, Liânia Alves Luzia, Aluísio Augusto Cotrim Segurado,
Micronutrient deficiency is a common condition in HIV-infected individuals and may occur in all stages of the disease. The objective of this cross-sectional study was to compare the concentrations of vitamin A and beta-carotene, micronutrients related to immunity and oxidative stress, in 182 adults with HIV/AIDS, under different highly active antiretroviral therapy (HAART) regimens. Patients were divided into 3 groups according to their HAART regimen: combination of nucleoside analog reverse transcriptase ...
Tópico(s): Pharmacological Effects and Toxicity Studies
2013 - Center for Academic Publications Japan | Journal of Nutritional Science and Vitaminology
Produção Nacional
Revisado por pares
Paulo S. G. de Mattos Neto, George D. C. Cavalcanti, Paulo Renato Alves Firmino, Eraylson G. Silva, Sérgio R.P. Vila Nova Filho,
Time series have become a valuable source of study in many areas, mainly because it encapsulates some underlying time-index variables. A significant part of these studies is dedicated to fit a single model to the past data to forecast future values of the series. However, single models may not be able to adequately fit local patterns; that is, particular and eventually recurrent variations dynamically incorporated in the series as time evolves. This temporal-window oriented paradigm has been at ...
Tópico(s): Complex Systems and Time Series Analysis
2020 - Elsevier BV | Knowledge-Based Systems
Produção Nacional
Revisado por pares
Ricardo José Ferreira, Paulo Renato Alves Firmino, Cláudio Tadeu Cristino,
Generalized Renewal Processes are useful for approaching the rejuvenation of dynamical systems resulting from planned or unplanned interventions. We present new perspectives for the Generalized Renewal Processes in general and for the Weibull-based Generalized Renewal Processes in particular. Disregarding from literature, we present a mixed Generalized Renewal Processes approach involving Kijima Type I and II models, allowing one to infer the impact of distinct interventions on the performance of ...
Tópico(s): Reliability and Maintenance Optimization
2015 - Public Library of Science | PLoS ONE
Produção Nacional
Revisado por pares
Aline Aguiar, Drausio Honório Morais, LIDIANE A. FIRMINO SILVA, Luciano Alves dos Anjos, OTTILIE CAROLINA FOSTER, Reinaldo José da Silva,
The richness of metazoan endoparasites associated with 25 anuran species from a transitional area between Cerrado and Atlantic Rain Forest from Brazil is here presented. We present and discuss the type-host and localities, the current taxonomic status, remarks on morphological features, biological cycle, and new records of these parasites. Nine hundred and seventy-eight anurans of four families (Bufonidae, Hylidae, Microhylidae, and Leptodactylidae) were collected during four expeditions in a private ...
Tópico(s): Bird parasitology and diseases
2021 - Q15088586 | Zootaxa
Luís Sousa, Cristiana Furtado Firmino, Cristina María Alves Marques-Vieira, Sandy Severino, Helena Pestana,
Introdução: O interesse da Enfermagem pela metodologia de revisões da literatura tem vindo a aumentar, constituindo-se métodos que permitem uma prática baseada na evidência científica. Objetivo: Caracterizar os diferentes tipos de revisões da literatura e descrever etapas principais de uma revisão sistemática da literatura. Material e métodos: Revisão narrativa da literatura. Pesquisa em bases de dados nas seguintes plataformas Google Académico, Scientific Electronic Library Online (SciELO), EBSCO ...
Tópico(s): Healthcare Regulation
2018 - | Revista Portuguesa de Enfermagem de Reabilitação
Produção Nacional
Revisado por pares
Kely Firmino Bruno, Jerferson Alves Ferreira Da Silva, Tarcı́lia Aparecida Silva, Aline Carvalho Batista, Ana Helena Gonçalves de Alencar, Carlos Estrela,
Bruno KF, Silva JA, Silva TA, Batista AC, Alencar AHG, Estrela C. Characterization of inflammatory cell infiltrate in human dental pulpitis. International Endodontic Journal , 43 , 1013–1021, 2010. Abstract Introduction To evaluate the microscopic characteristics and densities (per mm 2 ) of tryptase + mast cells, CD4 + T helper lymphocytes, CD45RO + memory T lymphocytes, foxp3 + T regulatory lymphocytes, CD20 + B lymphocytes, CD68 + macrophages, and CD31 + blood vessels in human dental pulpitis ( n = 38) and healthy pulpal ...
Tópico(s): Immune Response and Inflammation
2010 - Wiley | International Endodontic Journal
Produção Nacional
Revisado por pares
André Luíz Firmino Alves, Cláudio de Souza Baptista, Anderson Almeida Firmino, Maxwell Guimarães de Oliveira, Hugo Feitosa de Figueirêdo,
The widespread of social communication media over the Web has made available a large volume of opinionated textual data. These media constitute a rich source for sentiment analysis and understanding of the opinions spontaneously expressed. The traditional techniques for sentiment analysis are based on POS Tagger and its usage ends up being too costly when considering the Portuguese language, due to the complex grammatical structure of this language. Faced with such problem, this paper presents a ...
Tópico(s): Complex Network Analysis Techniques
2014 - Springer Science+Business Media | Lecture notes in computer science
Produção Nacional
Aillkeen Bezerra de Oliveira, André Luíz Firmino Alves, Cláudio de Souza Baptista,
School dropout is a major challenge that should be mitigated by universities. Early identification of students' dissatisfaction allows detecting problems in institutions, being useful for the decision-making process. In this context, opinion mining algorithms can help in the identification of students' opinions in institutional evaluation surveys. In this paper, we analyzed the answers of questionnaires carried out at a public university from 2012 to 2018 to capture students' opinions automatically ...
Tópico(s): Software Engineering Research
2020 - Springer Nature | Advances in intelligent systems and computing
Produção Nacional
Revisado por pares
Abene Silva Ribeiro, Liana Ribeiro Gouveia, Carlos Jonnatan Pimentel Barros, Paulo Renato Alves Firmino, Ricardo Oliveira Silva,
Gamma irradiation has been paramount for enhancing the quality of grain production, mainly in terms of distribution and storage. Gamma irradiation classification models for soybeans, however, are still in development. In this paper, we present a metabonomic model able to distinguish between gamma-irradiated and non-irradiated soybeans. The metabonomic model works on 1H NMR spectra of chloroform extracts and makes use of PCA and PLS-DA formalisms to classify the samples and to investigate which spectral ...
Tópico(s): Plant Genetic and Mutation Studies
2013 - Elsevier BV | Food Control
Produção Nacional
Revisado por pares
Matilde Vasconcelos Ernesto, Carolina Nunes Liberal, Aila Soares Ferreira, Ana Claudia Firmino Alves, Douglas Zeppelini, Celso Feitosa Martins, Alessandre Pereira-Colavite, Antônio José Creão-Duarte, Alexandre Vasconcellos,
Abstract: In detritus-based trophic systems, springtails, dung beetles, saprophagous calyptrate flies and termites consume and fragment organic matter and control populations of decomposer microorganisms, exerting a strong influence on energy and nutrient fluxes. A faunal inventory of these four groups of hexapods was performed in Serra de Santa Catarina (SSC), an area of arboreal-shrub caatinga located in the state of Paraíba, with the purpose of characterizing the assemblages of these taxa, and ...
Tópico(s): Insect and Pesticide Research
2018 - Fundação de Amparo à Pesquisa do Estado de SP | Biota Neotropica
Produção Nacional
Revisado por pares
Cícero Carlos Felix de Oliveira, Cláudio Tadeu Cristino, Paulo Renato Alves Firmino,
Statistical modelling has been paramount for the quality control and maintenance of repairable production systems. It allows to reduce costs and to prevent the occurrence of undesirable events – e.g. waste, emissions, losses, and accidents. At the same time, it provides support for enhancing production levels and the longevity of equipments and machines. Generalized Renewal Processes – GRP – are a powerful statistical formalism for modelling repairable systems. They enable one to evaluate the quality ...
Tópico(s): Risk and Safety Analysis
2016 - Elsevier BV | Journal of Cleaner Production
Produção Nacional
Revisado por pares
Thaís Ferreira Feitosa, Vinícius Longo Ribeiro Vilela, João Leite de Almeida-Neto, Antonielson dos Santos, Dayana Firmino de Morais, Bruna Farias Alves, Fabiana Nakashima, Solange María Gennari, Ana Célia Rodrigues Athayde, Hilda Fátima Jesus Pena,
The consumption of raw or undercooked pig meat containing Toxoplasma gondii cysts is an important transmission route of this protozoon to animals and humans. This study aimed to serologically diagnose, isolate and genotype T. gondii from pigs slaughtered for human consumption in the state of Paraíba, northeastern Brazil. Blood and tissue samples (heart, tongue and brain) were collected from 120 pigs at slaughterhouses in the state of Paraíba. Serological examinations were performed with an indirect ...
Tópico(s): Parasitic Infections and Diagnostics
2017 - Elsevier BV | Veterinary Parasitology
Produção Nacional
Revisado por pares
Thaís Ferreira Feitosa, Vinícius Longo Ribeiro Vilela, João Leite de Almeida-Neto, Lídio Ricardo Bezerra de Melo, Dayana Firmino de Morais, Bruna Farias Alves, Fabiana Nakashima, Solange María Gennari, Ana Célia Rodrigues Athayde, Hilda Fátima de Jesus Pena,
Tópico(s): Parasitic Infections and Diagnostics
2017 - Springer Science+Business Media | Parasitology Research
Produção Nacional
Revisado por pares
Maria Gláucia Carlos de Oliveira, Stélio Pacca Loureiro Luna, Talyta Lins Nunes, Paulo Ricardo Firmino, Amara Gyane Alves de Lima, Josiel Ferreira, Pedro Henrique Esteves Trindade, Raimundo Alves Barrêto Júnior, Valéria Veras de Paula,
Recognising pain in donkeys is challenging because they are stoic.To identify the responses of donkeys before and after surgical pain.Prospective, short-term longitudinal pre- and post-intervention observations.Forty adult donkeys underwent surgical castration after sedation with intravenous (IV) xylazine, induction with guaiphenesin/thiopental IV and maintenance of anaesthesia with isoflurane and local anaesthetic blockade. Four hours after recovery from anaesthesia, flunixin meglumine 1.1 mg/kg, ...
Tópico(s): Meat and Animal Product Quality
2020 - Wiley | Equine Veterinary Journal
Produção Nacional
Revisado por pares
Marina Moreira, Tatiana Tavares Carrijo, Anderson Alves‐Araújo, Alessandro Rapini, Alexandre Salino, Aline D. Firmino, Aline Pitol Chagas, Ana Flávia Alves Versiane, André M. Amorim, Andrews V S da Silva, Amélia Carlos Tuler, Ariane Luna Peixoto, Bethina S Soares, Braz A P Cosenza, Camila Nardy Delgado, Cláudia Regina Cachulo Lopes, Christian Silva, Daniel Elias Ferreira Barbosa, Daniele Monteiro, Danilo Marques, Dayvid Rodrigues Couto, Diego Rafael Gonzaga, Eduardo Dalcin, Elton John de Lírio, Fabrício Schmitz Meyer, Fátima Regina Gonçalves Salimena, Felipe Alves de Oliveira, Filipe Soares de Souza, Fernando B. Matos, Gabriel Depiantti, Guilherme Medeiros Antar, Gustavo Heiden, Henrique Machado Dias, Hian Carlos Ferreira de Sousa, Isabel T F V Lopes, Isis M Rollim, Jaquelini Luber, Jefferson Prado, Jimi Naoki Nakajima, João Lanna, João Paulo Fernandes Zorzanelli, J. F. Teixeira de Freitas, José Fernando A. Baumgratz, Jovani B. S. Pereira, Juliana R P M Oliveira, Kelly Antunes, Lana da Silva Sylvestre, Leandro Cardoso Pederneiras, Leandro Freitas, Leandro Lacerda Giacomin, Leonardo Dias Meireles, Leonardo N. Silva, Luciana Carvalho Pereira, Luís Alexandre Estevão da Silva, Luiz Menini Neto, Marcelo Monge, Marcelo Trovó, Marcelo Reginato, Marcos Sobral, Mário Rui Gomes, Mário Luís Garbin, Marli Pires Morim, Nayara D Soares, Paulo H. Labiak, Pedro Lage Viana, Pedro Henrique Cardoso, Pedro Luís Rodrigues de Moraes, Pedro B. Schwartsburd, Quélita Moraes, Raquel F. Zorzanelli, Renara Nichio‐Amaral, Renato Goldenberg, Samyra Gomes Furtado, Thamara Arão Feletti, Valquíria Ferreira Dutra, VINÍCIUS R. BUENO, Vinícius A.O. Dittrich, Rafaela Campostrini Forzza,
Brazilian protected areas are essential for plant conservation in the Atlantic Forest domain, one of the 36 global biodiversity hotspots. A major challenge for improving conservation actions is to know the plant richness, protected by these areas. Online databases offer an accessible way to build plant species lists and to provide relevant information about biodiversity. A list of land plants of "Parque Nacional do Caparaó" (PNC) was previously built using online databases and published on the website " ...
Tópico(s): Ecology and Vegetation Dynamics Studies
2020 - Pensoft Publishers | Biodiversity Data Journal
Alane Santana Santos, Ana Maria Souza dos Santos Moreau, Raul Silva Oliveira, Aline Roma Tomaz, Amanda Dias dos Reis,
Tópico(s): Rural Development and Agriculture
2025 - | AGRI-ENVIRONMENTAL SCIENCES
Produção Nacional
Revisado por pares
Emanuelly Vieira Pereira, Jameson Moreira Belém, Maria Juscinaide Henrique Alves, Jaqueline Alves Silva Torquato, Paulo Renato Alves Firmino, Ana Virgínia de Melo Fialho, Glauberto da Silva Quirino,
to identify factors associated with the sexual practices and positions performed by pregnant women.a cross-sectional, quantitative study conducted with 354 pregnant women, in the interior of Ceará, Brazil, in 2016. For data collection, a form and a Pregnancy Sexuality Questionnaire were used.there was a reduction in the sexual initiative of the woman, sexual disposition of the couple, sexual practices and most of the sexual positions, while the maintenance of preliminary sexual activities and initiative ...
Tópico(s): HIV/AIDS Research and Interventions
2021 - Associação Brasileira de Enfermagem | Revista Brasileira de Enfermagem