RSS 1.0Departamento de Matemática
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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 ... -
Using Mininet for Emulation and Prototyping Software-Defined Networks
; Shinoda, Ailton Akira; Schweitzer, Christiane Marie ; ; (2014 Ieee Colombian Conference On Communications And Computing (colcom), 2014) [Trabalho apresentado em evento]
Software-Defined Networks (SDNs) represents an innovative approach in the area of computer networks, since they propose a new model to control forwarding and routing data packets that navigate the World Wide Web. Since ... -
Simulation in an SDN network scenario using the POX Controller
; Schweitzer, Christiane Marie; Shinoda, Ailton Akira ; ; (2014 Ieee Colombian Conference On Communications And Computing (colcom), 2014) [Trabalho apresentado em evento]
Computer networks have evolved due to new trends in the society's needs since their emergence as a way of providing remote access and sharing of computational resources. The architecture inflexibility of the computer ... -
Supragingival and subgingival microbiota from patients with poor oral hygiene submitted to radiotherapy for head and neck cancer treatment
Gaetti-Jardim, Elerson; ; Schweitzer, Christiane Marie ; ; ; ; (Archives of Oral Biology, 2018) [Artigo]
Objective: This case-control study aimed to evaluate the effects of conventional radiotherapy (RT) on the prevalence and populations of oral microorganisms in head and neck cancer patients who did not receive adequate ... -
The use of trend lines channels and remaining useful life prediction
Barbanti, Luciano; Damasceno, Berenice Camargo ; Carlos Gonçalves, Aparecido ; Kuzminskas, Hadamez (Probabilistic Prognostics and Health Management of Energy Systems, 2017) [Capítulo de livro]
One of the most important aspects in a working machine is the remaining useful life (RUL) of its components. Prognostics in this case depends on establishing the cause-effect entries in the process as well as how it behaves ... -
The derivative as a probabilistic synthesis of past and future data and remaining useful life prediction
Damasceno, Berenice Camargo; Barbanti, Luciano ; Kuzminskas, Hadamez ; Bazani, Márcio Antonio (Probabilistic Prognostics and Health Management of Energy Systems, 2017) [Capítulo de livro]
The concept of remaining useful life (RUL) is crucial when dealing with mechanical systems. RUL is taken into account in a system through a series of prognostics and the study of stability in a related data series. This ... -
A review of crack propagation modeling using peridynamics
; Bazani, Márcio Antonio; Paschoalini, Amarildo Tabone ; Barbanti, Luciano (Probabilistic Prognostics and Health Management of Energy Systems, 2017) [Capítulo de livro]
Improvements on prognostics and health management (PHM) techniques are extremely important in order to prevent system failure and reduce costs with maintenance and machine downtime. In the particular case of system components ... -
Comparative study of the dynamics between rolling bearings of a dynamic rotor
Outa, Roberto; Chavarette, Fabio Roberto ; Faria, Glaucia Amorim (International Journal of Pure and Applied Mathematics, 2015) [Artigo]
The purpose of this research is to analyze the phenomena connected to a shaft supported by two roller bearings using the concept and theory of Jeffcott rotors, whose dynamic behavior at a given speed, can represent phenomena ... -
Dynamics and control design via LQR and SDRE methods for a maglev system
Cabral, Thalles Denner Ferreira; Chavarette, Fábio Roberto (International Journal of Pure and Applied Mathematics, 2015) [Artigo]
Several experimental maglev systems all around the world, mainly in Germany and Japan have demonstrated that this mode of transportation can profitably compete with air travel. However, a system such as the German maglev ... -
Control instability applied to a micro electro mechanical actuator system (mems)
De Conde, Kevin Eduardo; Chavarette, Fábio Roberto (Advanced Materials Research, 2014) [Trabalho apresentado em evento]
MicroElectroMechanical Systems (MEMS) are devices what have been considered the technology of the future, being used in too many areas. MEMS are a combination of microstructures, micro sensors and micro actuators. The ... -
Non-linear energy harvesting system efficiency comparison from periodic to non-ideal excitation
Da Costa Ferreira, Douglas; Chavarette, Fábio Roberto ; Peruzzi, Nelson José (International Journal of Pure and Applied Mathematics, 2014) [Artigo]
Dynamics of a non-linear energy harvesting is affected by excitation source and to explore efficiency it is necessary to understand which region offers more energy and the influence of a forced periodic vibration related ... -
Fenichel theory for multiple time scale singular perturbation problems
Cardin, Pedro Toniol; (SIAM Journal on Applied Dynamical Systems, 2017) [Artigo]
This paper is concerned with a geometric study of singularly perturbed systems of ordinary differential equations expressed by (n-1)-parameter families of smooth vector fields on ℝl, where n ≥ 2. The inherent characteristic ... -
Ocorrência de diclofenaco e naproxeno em água superficial no município de Três Lagoas (MS) e a influência da temperatura da água na detecção desses anti-inflamatórios
Américo-Pinheiro, Juliana Heloisa Pinê; Isique, William Deodato ; ; Machado, Angela Aparecida ; De Carvalho, Sérgio Luís ; Valério Filho, Walter Veriano ; (Engenharia Sanitaria e Ambiental, 2017) [Artigo]
The aims of this study were to evaluate the presence and concentration of the anti-inflammatory drugs diclofenac and naproxen in an urban stream located in Três Lagoas, Mato Grosso do Sul, Brazil, that receives effluent ... -
A Dynamic-State Feedback Approach Employing a New State-Space Description for the Fast Wavelet Transform with Multiple Decomposition Levels
Uzinski, J. C.; ; ; Assunção, E. ; ; Villarreal, F. (Journal of Control, Automation and Electrical Systems, 2017) [Artigo]
This research paper proposes a wavelet-based dynamic-state feedback control strategy in the discrete time domain. In this proposal, the state feedback employs a state-space description for the fast wavelet transform, which ... -
An immunological approach based on the negative selection algorithm for real noise classification in speech signals
Abreu, Caio Cesar Enside de; ; Villarreal, Francisco (AEU - International Journal of Electronics and Communications, 2017) [Artigo]
This paper presents a new approach to detect and classify background noise in speech sentences based on the negative selection algorithm and dual-tree complex wavelet transform. The energy of the complex wavelet coefficients ... -
Transcritical and zero-Hopf bifurcations in the Genesio system
Cardin, Pedro Toniol; (Nonlinear Dynamics, 2017) [Artigo]
In this paper we study the existence of transcritical and zero-Hopf bifurcations of the third-order ordinary differential equation x⃛ + ax¨ + bx˙ + cx- x2= 0 , called the Genesio equation, which has a unique quadratic ... -
Treponema species in the subgingival microflora of ovine periodontitis
Borsanelli, A. C.; Ramos, T. N.M. ; Gaetti-Jardim, E. ; Schweitzer, C. M. (Veterinary Record, 2017) [Artigo]