Produção Nacional
Anderson Paulo de Paiva, Paulo Henrique da Silva Campos, João Roberto Ferreira, Luiz Gustavo Dias Lopes, Emerson José de Paiva, Pedro Paulo Balestrassi,
This paper presents an experimental study of AISI 52100 hardened steel turned with wiper mixed ceramic (Al2O3 + TiC) inserts coated with TiN, using Multivariate Robust Parameter Design (MRPD). The main characteristic of this new optimization approach consists of considering both controllable (xi) and noise (zi) variables of the hard turning process to find out the parameter levels which minimize the distance of each response (yi) from its respective targets (Ti) while keeps each variance caused by the noise ...
Tópico(s): Advanced Machining and Optimization Techniques
2011 - Elsevier BV | International Journal of Refractory Metals and Hard Materials
Produção Nacional
Revisado por pares
Adriana Cortéz, E. Scarcelli, Rodrigo Martins Soares, Marcos Bryan Heinemann, Sidnei Miyoshi Sakamoto, ME GENOVEZ, Fernando Ferreira, LJ RICHTZENHAIN,
... São Paulo, Av. Prof. Dr. Orlando Marques de Paiva, 87, São Paulo, SP 05508-000, BrazilSearch for more papers by ... São Paulo, Av. Prof. Dr. Orlando Marques de Paiva, 87, São Paulo, SP 05508-000, Brazil.Search for more papers ... São Paulo, Av. Prof. Dr. Orlando Marques de Paiva, 87, São Paulo, SP 05508-000, Brazil.Search for more papers ... São Paulo, Av. Prof. Dr. Orlando Marques de Paiva, 87, São Paulo, SP 05508-000, Brazil.Search for more papers ... São Paulo, Av. Prof. Dr. Orlando Marques de Paiva, 87, São Paulo, SP 05508-000, Brazil. Author for correspondence. E- ...
Tópico(s): Escherichia coli research studies
2001 - Wiley | Australian Veterinary Journal
Produção Nacional
Revisado por pares
Lucas Guedes de Oliveira, Anderson Paulo de Paiva, Paulo Henrique da Silva Campos, Emerson José de Paiva, Pedro Paulo Balestrassi,
Response Surface Methodology is an effective framework for performing modelling and optimization of industrial processes. The Central Composite Design is the most popular experimental design for response surface analyses given its good statistical properties, such as decreasing prediction variance in the design center, where it is expected to find the stationary points of the regression models. However, the common practice of reducing center points in response surface studies may damage this property. ...
Tópico(s): Manufacturing Process and Optimization
2019 - Elsevier BV | Precision Engineering
Paulo Gomes, Nuno Seco, Francisco C. Pereira, Paulo Paiva, Paulo Carreiro, José Luís Ferreira, Carlos Bento,
Analogy is an important reasoning process in creative design. It enables the generation of new design artifacts using ideas from semantically distant domains. Candidate selection is a crucial process in the generation of creative analogies. Without a good set of candidate sources, the success of subsequent phases can be compromised. Two main types of selection have been identified: semantics-based retrieval and structure-based retrieval. This paper presents an empirical study on the importance of ...
Tópico(s): Advanced Text Analysis Techniques
2006 - Elsevier BV | Knowledge-Based Systems
Produção Nacional
Revisado por pares
Jacques Miranda Filho, José Maria de Carvalho Filho, Anderson Paulo de Paiva, Paulo Vitor Grillo de Souza, Samuel Tomasin,
Tópico(s): Optimal Power Flow Distribution
2016 - Elsevier BV | Electric Power Systems Research
Produção Nacional
Revisado por pares
Luiz Célio Souza Rocha, Anderson Paulo de Paiva, Paulo Rotella, Pedro Paulo Balestrassi, Paulo Henrique da Silva Campos,
Tópico(s): Optimal Experimental Design Methods
2016 - Springer Science+Business Media | The International Journal of Advanced Manufacturing Technology
Produção Nacional
Revisado por pares
Max Olinto Moreira, Pedro Paulo Balestrassi, Anderson Paulo de Paiva, Paulo F. Ribeiro, Benedito Donizeti Bonatto,
In recent years, renewable and sustainable energy sources have attracted the attention of various investors and stakeholders, such as energy sector agents and even consumers. It is perplexing to observe and anticipate the required levels of photovoltaic generation, which are inherent tasks for such rapid insertion into the electric grid. This distributed/renewable generation must be integrated in a coordinated way such that there is no negative impact on the electric performance of the grid, increasing ...
Tópico(s): Energy Load and Power Forecasting
2020 - Elsevier BV | Renewable and Sustainable Energy Reviews
Produção Nacional
Revisado por pares
Luiz Célio Souza Rocha, Anderson Paulo de Paiva, Paulo Rotella, Pedro Paulo Balestrassi, Paulo Henrique da Silva Campos, J. Paulo Davim,
A mixed ceramic is a type of cutting-tool material widely employed for machining hardened steels. The usage of a mixed ceramic along with a wiper geometry can help double the feed rate, thereby increasing productivity while keeping the surface roughness (Ra) as low as possible. Analyses of manufacturing processes, such as a machining process, show that the various possible controlled parameters can be modeled by multiobjective mathematical models to ensure their optimization. Hence, the aim of this ...
Tópico(s): Manufacturing Process and Optimization
2017 - Elsevier BV | Precision Engineering
Produção Nacional
Revisado por pares
Rafael Coradi Leme, Anderson Paulo de Paiva, Paulo E. Steele Santos, Pedro Paulo Balestrassi, Leandro de Lima Galvão,
Abstract Benchmarking plays a central role in the regulatory scene. Regulators set tariffs according to a performance standard and, if the companies can outperform such a standard, they can retain the gains observed by such outperformance. Efficiency performance is usually assessed by comparison (or a benchmark) against either other companies or the company's own historical performance. This paper discusses the impact of environmental variables on the efficiency performance of electricity distribution ...
Tópico(s): Water resources management and optimization
2014 - Elsevier BV | Energy Economics
Produção Nacional
Elisa Costa-Paiva, Paulo Cesar Paiva,
Morphology has been the subject of several studies in Eunice specially in the context of the taxonomy and evolutionary relationships of taxa within this genus. In this study we opt for a morphometric approach comparing five species of Eunice to assess if it was possible to delimitate them by shape variables. The morphology of E.fucata, E.insularis, E. cf. ornata, E.rubra, and Eunice sp. was compared using traditional morphometric analysis of 16 measured variables. After removing the size-effect, ...
Tópico(s): Invertebrate Taxonomy and Ecology
2007 - Sociedade Brasileira de Zoologia | Revista Brasileira de Zoologia
Produção Nacional
Revisado por pares
Elisa Costa-Paiva, Paulo Cesar Paiva, Michelle Klautau,
One hundred and four specimens of Branchiomma luctuosum (Grube, 1870), a sabellid polychaete, were submitted to different anaesthetization and fixation procedures: a control group with living animals, immediate fixation with formaldehyde 4% (FO), ethanol 100% (AE) or ethanol 70% (ET), and anaesthetization with magnesium chloride (MC), refrigeration (RE), menthol crystals (ME) or freshwater (FW). Twenty-three morphometric variables of the body were measured and analysed with size-free multivariate statistics. ...
Tópico(s): Aquatic Invertebrate Ecology and Behavior
2007 - Cambridge University Press | Journal of the Marine Biological Association of the United Kingdom
Produção Nacional
Revisado por pares
Sylvia Lima de Souza Medeiros, Mizziara Marlen Matias de Paiva, Paulo Henrique Lopes, Wilfredo Blanco, Françoise D. Lima, Jaime Bruno Cirne de Oliveira, Inácio Gomes Medeiros, Eduardo Sequerra, Sandro de Souza, Tatiana Leite, Sidarta Ribeiro,
Previous observations suggest the existence of 'Active sleep' in cephalopods. To investigate in detail the behavioral structure of cephalopod sleep, we video-recorded four adult specimens of Octopus insularis and quantified their distinct states and transitions. Changes in skin color and texture and movements of eyes and mantle were assessed using automated image processing tools, and arousal threshold was measured using sensory stimulation. Two distinct states unresponsive to stimulation occurred ...
Tópico(s): Neural dynamics and brain function
2021 - Cell Press | iScience
Produção Nacional
Revisado por pares
Luna Chagas Clementino, Kethlen Sara Correa de Souza, Millaine Castelo‐Branco, Matheus França Perazzo, Maria Letícia Ramos‐Jorge, Flávio de Freitas Mattos, Saul Martins Paiva, Paulo Antônio Martins‐Júnior,
This study assessed the features of the 100 most-cited papers on oral health-related quality of life (OHRQoL).The 100 most-cited OHRQoL papers were collected from Web of Science, adopting a combined keyword search strategy. Google Scholar and Scopus databases were searched to compare citations. The following data were extracted from papers: title of the paper, number of citations, authorship, country, year of publication, title of the journal, study design, sample size, topic and OHRQoL instruments ...
Tópico(s): Health Education and Validation
2021 - Wiley | Community Dentistry And Oral Epidemiology
Produção Nacional
Revisado por pares
Arun A. Elias, Flávia Donadelli, Ely Laureano Paiva, Paulo Philipe Bacic Araujo,
Purpose The overall objective of this study is to holistically analyse the complexities involved in the adoption of sustainable wood supply chain in the Amazon and to develop strategic interventions to improve the system. Design/methodology/approach This study uses the systems thinking and modelling framework that included problem structuring followed by the development of a systems model. Tumbira and Santa Helena do Inglês, two Amazonian communities, were used as a case. Data were collected by ...
Tópico(s): Environmental Sustainability in Business
2021 - Emerald Publishing Limited | The International Journal of Logistics Management
Produção Nacional
Revisado por pares
Rogério Santana Peruchi, Paulo Rotella, Tarcísio Gonçalves de Brito, Anderson Paulo de Paiva, Pedro Paulo Balestrassi, Lavínia Maria Mendes Araújo,
DMAIC (define, measure, analyze, improve and control) is one of the most utilized methods for guiding practitioners in the decision-making process of quality improvement projects. Industrial processes commonly deal with multiple critical-to-quality (CTQ) characteristics. When these characteristics are correlated, multivariate statistical techniques should be applied. This paper aims to propose a domain-specific Six Sigma method, the MDMAIC (multivariate DMAIC). The new stepwise procedure helps practitioners ...
Tópico(s): Quality and Management Systems
2020 - Institute of Electrical and Electronics Engineers | IEEE Access
Produção Nacional
Revisado por pares
Edielson P. Frigieri, P. H. S. Campos, Anderson Paulo de Paiva, Pedro Paulo Balestrassi, João Roberto Ferreira, Carlos Alberto Ynoguti,
During the last years, notable efforts have been made to develop reliable and industrially applicable machining monitoring systems based on different types of sensors, especially indirect methods that does not required to interrupt the machining process. As the main objective in machining processes is to produce a high-quality surface finish which, however, can be measured only at the end of the machining cycle, a more preferable method would be to monitor the quality during the cycle. Motivated ...
Tópico(s): Advanced Machining and Optimization Techniques
2016 - Elsevier BV | Applied Acoustics
Produção Nacional
Revisado por pares
Francelli Cordeiro Neves, Wanessa T. Clemente, Nilton Lincopán, Isabela Dias Paião, Patrícia Neves, Roberta Maia de Castro Romanelli, Stella S.S. Lima, Luciene F. Paiva, Paulo Henrique Orlandi Mourão, Vandack A. Nobre-Junior,
Carbapenem-resistant Acinetobacter baumannii (CRAb) is an important cause of nosocomial infections especially in intensive care units. This study aimed to assess clinical aspects and the genetic background of CRAb among ICU patients at a Brazilian teaching hospital. 56 critically ill patients colonized or infected by CRAb, during ICU stay, were prospectively assessed. Based on imipenem MIC ≥ 4 μg/mL, 28 CRAB strains were screened for the presence of genes encoding metallo-β-lactamases and OXA-type ...
Tópico(s): Antibiotics Pharmacokinetics and Efficacy
2016 - Elsevier BV | The Brazilian Journal of Infectious Diseases
Rita Pasion, Tiago O. Paiva, Paulo Pedrosa, Hugo Gaspar, Beatriz Vasconcelos, Ana Martins, Maria Helena Amaral, J. M. Nóbrega, Ricardo N.M.J. Páscoa, Carlos Fonseca, Fernando Barbosa,
The EEG technique has decades of valid applications in clinical and experimental neurophysiology. EEG equipment and data analysis methods have been characterized by remarkable developments, but the skin-to-electrode signal transfer remains a challenge for EEG recording.A novel quasi-dry system - the polymer wick-based electrode - was developed to overcome the limitations of conventional dry and wet silver/silver-chloride (Ag/AgCl) electrodes for EEG recording.Nine participants completed an auditory oddball ...
Tópico(s): Neural dynamics and brain function
2016 - Elsevier BV | Journal of Neuroscience Methods
Produção Nacional
Revisado por pares
Luiz Célio Souza Rocha, Anderson Paulo de Paiva, Pedro Paulo Balestrassi, Geremias Severino, Paulo Rotella,
In practical situations, solving a given problem usually calls for the systematic and simultaneous analysis of more than one objective function. Hence, a worthwhile research question may be posed thus: In multiobjective optimization, what can facilitate for the decision maker choosing the best weighting? Thus, this study attempts to propose a method that can identify the optimal weights involved in a multiobjective formulation. The proposed method uses functions of Entropy and Global Percentage ...
Tópico(s): Optimal Experimental Design Methods
2015 - Hindawi Publishing Corporation | Mathematical Problems in Engineering
Produção Nacional
Revisado por pares
Patrícia Corrêa‐Faria, Suzane Paixão‐Gonçalves, Saul Martins Paiva, Paulo Antônio Martins‐Júnior, Raquel Gonçalves Vieira‐Andrade, Leandro Silva Marques, Maria Letícia Ramos‐Jorge,
Oral diseases can negatively influence the quality of life causing harm in the development of routine activities, child development and their well-being.To investigate the impact of dental caries, malocclusion and developmental defects of enamel (DDE) on the oral health-related quality of life of preschool children and their parents.A cross-sectional study was carried out with 646 children aged 2-6 years in Diamantina, Brazil. Calibrated dental examiners performed the oral examinations. Parents answered ...
Tópico(s): Dental Erosion and Treatment
2015 - Wiley | International Journal of Paediatric Dentistry
Produção Nacional
Luiz Célio Souza Rocha, Anderson Paulo de Paiva, Emerson José de Paiva, Pedro Paulo Balestrassi,
Tópico(s): Welding Techniques and Residual Stresses
2015 - Springer Science+Business Media | Journal of the Brazilian Society of Mechanical Sciences and Engineering
Produção Nacional
Revisado por pares
Heloisa Sousa Gomes, Patrícia Corrêa‐Faria, Tarcı́lia Aparecida Silva, Saul Martins Paiva, Paulo Sucasas Costa, Aline Carvalho Batista, Luciane Rezende Costa,
Little is known about whether midazolam sedation can reduce salivary cortisol levels and consequently influence children's behaviour during dental treatment. The aim of this study was to evaluate the effect of midazolam sedation on salivary cortisol and its correlation with children's behaviour during restorative dental treatment. Eighteen healthy children, aged two to five years, were randomly assigned to two dental treatment appointments, both with physical restraint: oral midazolam 1 mg/kg (MS) ...
Tópico(s): Pediatric Pain Management Techniques
2015 - Brazilian Society of Dental Research | Brazilian Oral Research
Produção Nacional
Revisado por pares
Paula Cristina Pelli Paiva, Haroldo Neves de Paiva, Paulo Messias de Oliveira Filho, Maria Ilma de Souza Côrtes,
The scope of this study was to determine the prevalence of trauma in the permanent dentition of 12-year-old schoolchildren and assess associations with demographic factors such as gender and socioeconomic status and overjet and lip coverage clinical factors. A cross-sectional analysis was conducted using a representative sample of 638 students. Data were gathered by means of clinical examinations and self-administered questionnaires. Descriptive analysis was performed, followed by the use of the ...
Tópico(s): Restraint-Related Deaths
2015 - ASSOCIAÇÃO BRASILEIRA DE SAÚDE COLETIVA | Ciência & Saúde Coletiva
Produção Nacional
Augusto Weber, Lineu César Werneck, Eduardo dos Santos Paiva, Paulo Gans,
Fibromyalgia (FM) is a disease that causes widespread pain and increased sensitivity to pain because of a dysfunction in the central nervous system. This study investigated the effect of music combined with vibration on acupuncture points for the treatment of FM.A total of 120 patients with FM were allocated randomly to four groups (30 patients each). One group listened to a sequence of Bach's compositions. The second group was subjected to vibratory stimuli on a combination of acupuncture points ...
Tópico(s): Acupuncture Treatment Research Studies
2015 - Mary Ann Liebert, Inc. | The Journal of Alternative and Complementary Medicine
Produção Nacional
Revisado por pares
Leonardo Valderrama, Vassula Belinato Paiva, Paulo Henrique Março, Patrícia Valderrama,
Principal component analysis (PCA) is a chemometric method that allows for the extraction of chemical information that would otherwise be impossible to determine.Teaching chemometrics to undergraduates can contribute to the overall professional development and training of new teachers, whose profiles have been gaining attention due to the current demand for data interpretation.In this study, a didactic experiment involving PCA is proposed.Spectrophotometry was used in the ultraviolet-visible (UV-Vis) ...
Tópico(s): Advanced Chemical Sensor Technologies
2015 - Brazilian Chemical Society | Química Nova
Produção Nacional
Revisado por pares
Stéphanie Vaz, Stella Manes, Gabriel Khattar, Mariana Mendes, Luiz Felipe Lima da Silveira, Eduardo Teles Barbosa Mendes, Erimágna de Morais Rodrigues, Danielle Gama-Maia, Maria Lúcia Lorini, Margarete V. Macedo, Paulo Cesar Paiva,
Anthropic stressors are among the greatest concerns in nature conservation. Among these, deforestation and urban expansion are major drivers of habitat loss, which is a major threat to biodiversity. Insects, the largest and most abundant group of animals, are declining at alarming rates. However, global estimates of the impact of anthropic stressors on insect abundance, richness, and traits are still lacking. Here, we performed a meta-analysis to estimate the impact of urbanization stressors on ...
Tópico(s): Animal and Plant Science Education
2023 - Elsevier BV | The Science of The Total Environment
Produção Nacional
Revisado por pares
João R. S. Benevides, Marlon A. D. Paiva, Paulo V. G. Simplício, Roberto S. Inoue, Marco H. Terra,
We propose a disturbance observer-based controller to deal with the trajectory tracking problem of a quadrotor subject to parametric uncertainties and wind disturbance. The design is based on the combination of a recursive robust linear-quadratic regulator and a Kalman filter. Robust regulation deals with uncertainties of state and input matrices of the quadrotor in order to minimize, mainly, its trajectory tracking error. Filtering aims to estimate wind disturbance based on an augmented state-space ...
Tópico(s): Stability and Control of Uncertain Systems
2022 - Institute of Electrical and Electronics Engineers | IEEE Access
Produção Nacional
Revisado por pares
Suzana Mallmann, Lia Ferla, Marina Petter Rodrigues, Luciana Laureano Paiva, Paulo Roberto Stefani Sanches, Charles Francisco Ferreira, José Geraldo Lopes Ramos,
Objective To compare the effects of parasacral transcutaneous electrical stimulation with the effects of transcutaneous posterior tibial nerve stimulation in women with overactive bladder syndrome (OAB). Studydesign A randomized clinical trial was performed with 50 women aged 40–76 years with symptoms of OAB, divided into two groups: the parasacral transcutaneous electrical stimulation (PS) group and the transcutaneous posterior tibial nerve stimulation (PTN) group. Both groups underwent the same protocol, ...
Tópico(s): Urinary Tract Infections Management
2020 - Elsevier BV | European Journal of Obstetrics & Gynecology and Reproductive Biology
Produção Nacional
Revisado por pares
Lucas Guedes de Oliveira, Carlos Henrique de Oliveira, Tarcísio Gonçalves de Brito, Emerson José de Paiva, Anderson Paulo de Paiva, João Roberto Ferreira,
Given the complex nature of their phenomena and interactions, industrial processes often have multiple variables of interest, usually grouped into critical-to-quality and critical-to-performance characteristics. These variables often have significant correlations, which make engineering problems multivariate. For this reason, Response Surface Methodology, coupled with multivariate techniques, has been widely used as a logical roadmap for modeling and optimization of the characteristics of interest. ...
Tópico(s): Advanced machining processes and optimization
2020 - Elsevier BV | Precision Engineering
Produção Nacional
Sérgio Thode Filho, Mônica Regina da Costa Marques, Daniel Vidal Pérez, Julieta Laudelina de Paiva, Paulo Sérgio Souza, A. A. Cerqueira,
Quando lançado diretamente no solo, o óleo vegetal residual (OVR) ocupa os espaços que naturalmente seriam ocupados pela água e pelo ar, provocando a sua impermeabilização. Adicionalmente, a fauna e a flora deste local ficam impedidas de absorver os nutrientes, bem como as sementes não conseguem germinar o que torna o solo impróprio para o cultivo. Dependendo das características físico-químicas do solo e outras características como relevo e regime pluviométrico, o OVR pode migrar deste e atingir ...
Tópico(s): Microbial bioremediation and biosurfactants
2020 - | Natural Resources (ISSN 2237-9290)