RSS 1.0Departamento de Matemática
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Impact wave predictions by a Fuzzy ARTMAP neural network
Oliveira, P. B.A.
; Lotufo, A. D.P. ; Lopes, M. L.M. ; Maciel, G. F. (Ocean Engineering, 2020) [Artigo]
Impact waves caused by landslides, rock blocks, and avalanches in lakes and dam reservoirs have provoked several disasters since the dawn of time; further, they have caused considerable number of deaths and property loss. ... -
Chemical and structural composition of black pigmented supragingival biofilm of bovines with periodontitis
Saraiva, Júlia Rebecca; ; Borsanelli, Ana Carolina ; Schweitzer, Christiane M. ; Júnior, Elerson Gaetti-Jardim ; ; Ramos, Thamiris Naiasha M. ; Dutra, Iveraldo S. (Pesquisa Veterinaria Brasileira, 2019) [Artigo]
Bovine periodontitis is a multifactorial disease primarily associated with a potentially pathogenic microbiota housed in the oral biofilm of animals. Biofilms are organized structures, in which the constituents coexist in ... -
On the controllers' design to stabilize ground resonance helicopter
Ignácio da Silva, José A.; Bueno, Douglas D. ; de Abreu, Gustavo L. C. M. (JVC/Journal of Vibration and Control, 2019) [Artigo]
Ground resonance (GR) in helicopters is a potentially catastrophic instability commonly caused by coalescence of the regressive cyclic blade lag mode with the fuselage motion in certain rotor speed ranges. It can limit the ... -
Damage diagnosis in an isotropic structure using an artificial immune system algorithm
Oliveira, Daniela C.; Chavarette, Fábio R. ; Lopes, Mara L. M. (Journal of the Brazilian Society of Mechanical Sciences and Engineering, 2019) [Artigo]
This work proposes a recent methodology for developing structural health monitoring based on intelligent computing techniques, with the purpose of detecting structural damages in aircrafts using artificial immune systems ... -
Subgingival bacterial microbiota associated with ovine periodontitis1
; Borsanelli, Ana Carolina; Gaetti-Jardim, Elerson ; Schweitzer, Christiane Marie ; ; ; Dutra, Iveraldo S. ; (Pesquisa Veterinaria Brasileira, 2019) [Artigo]
Periodontitis is an inflammatory response in a susceptible host caused by complex microbiota, predominantly composed of Gram-negative anaerobic bacteria. Aiming to characterize the subgingival bacterial microbiota associated ... -
Linear Integral Equations with Discontinuous Kernels and the Representation of Operators on Regulated Functions on Time Scales
Barbanti, Luciano; Damasceno, Berenice Camargo ; Silva, Geraldo Nunes ; ; ; ; (Differential And Difference Equations With Applicati Ons, 2013) [Trabalho apresentado em evento]
We present here the linear Cauchy-Stieltjes integral on regulated functions with values in Banach spaces on time scales and represent a linear operator on the space of the regulated functions by means of an appropriate ... -
Modulation in phase and frequency of neural oscillations during epileptiform activity induced by neonatal Zika virus infection in mice
; ; ; Brogin, Joao A. Ferres; Bueno, Douglas D. ; ; ; ; ; et al. (Scientific Reports, 2020) [Artigo]
Modulation of brain activity is one of the main mechanisms capable of demonstrating the synchronization dynamics of neural oscillations. In epilepsy, modulation is a key concept since seizures essentially result from neural ... -
Soil quality in two coffee crop systems in the Amazon biome
; ; Faria, Glaucia A. (Revista Brasileira De Engenharia Agricola E Ambiental, 2020) [Artigo]
The form of occupation of the state of Rondonia, Brazil, favored the extensive agriculture, which resulted in a fast deforestation. The removal of forests and inadequate soil management and use, combined with a hot and wet ... -
Influence of friction and asymmetric freeplay on the limit cycle oscillation in aeroelastic system: An extended Henon's technique to temporal integration
Wayhs-Lopes, Larissa Drews; ; Bueno, Douglas D. (Journal Of Fluids And Structures, 2020) [Artigo]
Nonlinear effects such as friction and freeplay on the control surfaces can affect aeroelastic dynamics during flight. In particular, these nonlinearities can induce limit cycle oscillations (LCO), changing the system ... -
Prognosis and fail detection in a dynamic rotor using artificial immunological system
; Chavarette, Fabio Roberto; ; Goncalves, Aparecido C. ; Roefero, Luiz G. P. ; Moro, Thiago C. (Engineering Computations, 2020) [Artigo]
Purpose In recent years, the mechanical industries began to apply many investments in research and technological development to obtain efficient methods to analyze the integrity of structures and prevent disasters and/or ... -
EXISTENCE RESULTS FOR SOLUTIONS TO DISCONTINUOUS DYNAMIC EQUATIONS ON TIME SCALES
; Domini dos Santos, Iguer Luis (Differential Equations & Applications, 2020) [Artigo]
In this paper, we present three results about the existence of solutions to discontinuous dynamic equations on time scales. The existence of Caratheodory type solution is produced using convergence and Arzela-Ascoli theorem. ... -
Experimental plot size of passion fruit
Faria, Glaucia Amorim; ; ; ; Maltoni, Katia Luciene ; Pigari, Lucas Bernardo (Revista Brasileira De Fruticultura, 2020) [Artigo]
The determination of the plot size is a practical matter pertinent to the experimental planning, and its optimal characterization allows to obtain higher precision and better quality in the results. Therefore, in this ... -
Enhanced use practices in SSVEP-based BCIs using an analytical approach of canonical correlation analysis
Ferres Brogin, Joao Angelo; ; Bueno, Douglas Domingues (Biomedical Signal Processing And Control, 2020) [Artigo]
The search for a better understanding of the brain's anatomy and its functions on human actions has been a harsh yet very useful task, especially for brain-computer interface (BCI) engineering applications and medical ... -
Chaos control via Mathieu-Van der Pol system and Linear Optimal Control design with a non-ideal excitation and parametric uncertainties
Goncalves Vicente, Joselma Pinheiro; Chavarette, Fabio Roberto ; Pereira Roefero, Luiz Gustavo (Revista Internacional De Metodos Numericos Para Calculo Y Diseno En Ingenieria, 2019) [Artigo]
In this work, a non-ideal system based on the Mathieu-Van der Pol System is modeled considering its parameters as uncertain, which makes it closer to reality. Numerical simulations are presented demonstrating that the ... -
Regulated Functions with values in the Banach Algebra of Quaternions
Fernandes, L. A. O.; Arbach, R. ; ; ; ; ; (World Congress On Engineering, Wce 2011, Vol I, 2011) [Trabalho apresentado em evento]
In this paper we deal with the notion of regulated functions with values in a Banach algebra A, we prove some results and present examples using quaternions. The physical meanning of this kind of functions is introduced ... -
A Multiobjective Model for Distribution System Planning based on Tabu Search
Pereira Junior, Benvindo Rodrigues; Sanches Mantovani, Jose Roberto ; Cossi, Antonio Marcos ; ; (2013 Ieee Grenoble Powertech (powertech), 2013) [Trabalho apresentado em evento]
This paper presents a multiobjective model for the multistage planning problem of a distribution system. The problem is formulated as a multiobjective mixed integer nonlinear programming model. The actions deemed in this ... -
Moving frames for Lie symmetries reduction of nonholonomic systems
; ; Righetto, Edison; da Silva, Samuel (Acta Mechanica, 2019) [Artigo]
Given a Lie group of finite-dimensional transformations acting on a manifold, there is always an action known as a long-acting group action. This action describes the fundamental basis of the Lie theory connecting groups ... -
Efficacy of virginiamycin for the control of periodontal disease in calves
Ramos, Thamiris N.M.; Borsanelli, Ana Carolina ; Saraiva, Júlia R. ; Vaccari, Juliana ; Schweitzer, Christiane M. ; Gaetti-Jardim, Elerson ; Dutra, Iveraldo S. (Pesquisa Veterinaria Brasileira, 2019) [Artigo]
Periodontal diseases are multifactorial infectious processes caused by complexes of microorganisms, with damage to health, production, and animal welfare. The aim of the present study was to evaluate the efficacy of ... -
Forecasting the spatiotemporal variability of soil CO2 emissions in sugarcane areas in southeastern Brazil using artificial neural networks
Freitas, Luciana P. S.; Lopes, Mara L. M. ; Carvalho, Leonardo B ; Panosso, Alan R. ; La Scala Júnior, Newton ; ; Minussi, Carlos R. ; Lotufo, Anna D. P. (Environmental Monitoring and Assessment, 2018) [Artigo]
Carbon dioxide (CO2) is considered one of the main greenhouse effect gases and contributes significantly to global climate change. In Brazil, the agricultural areas offer an opportunity to mitigate this effect, especially ... -
Estimation with Mean Square Error for Real-Valued Channel Quantization
; ; Carvalho, Edson D. de; Vieira Filho, Jozue ; (2014 Globecom Workshops (gc Wkshps), 2014) [Trabalho apresentado em evento]
Interference is usually viewed as an obstacle to communication in wireless networks, so we develop a new methodology to quantize real-valued channels in order to realize interference alignment onto a lattice. One key step ...