RSS 1.0Departamento de Matemática e Computação
Browse by
Recent Submissions
-
Periodic Orbits in the Muthuswamy-Chua Simplest Chaotic Circuit
Messias, Marcelo
; (Journal of Dynamical and Control Systems, 2022) [Artigo]
In 2010, Muthuswamy and Chua presented an autonomous chaotic circuit using only three elements in series: an inductor, a capacitor and a memristor. This circuit is known as the simplest chaotic circuit and it is determined ... -
New solutions and methodologies for data acquisition and management in small municipalities
; Amorim, Amilton; ; de Souza, Guilherme Henrique Barros ; Correia, Ronaldo Celso Messias ; Destro, Rafael Delli Colli (Methods and Applications of Geospatial Technology in Sustainable Urbanism, 2021) [Capítulo de livro]
Promoting and managing sustainable territorial development require adequate tools that enable territorial managers to formulate appropriate choices. Technological solutions have emerged, and the paradigm has shifted from ... -
Fireasy: a tool to aid security policy modeling, translation and understanding firewall configuration
Marinho Queiróz, Leandro Meira; Garcia, Rogério Eduardo ; Eler, Danilo Medeiros ; Messias Correia, Ronaldo Celso (Iberian Conference on Information Systems and Technologies, CISTI, 2022) [Trabalho apresentado em evento]
Companies store increasing amounts of data, requiring the implementation of mechanisms to protect them from malicious people. There are techniques and procedures that aim to increase the security of computer systems, such ... -
Nonchaotic Behavior and Transition to Chaos in Lorenz-like Systems Having Invariant Algebraic Surfaces
Messias, Marcelo; Silva, Rafael Paulino (Chaos Theory and Applications, 2022) [Artigo]
The famous and well-studied Lorenz system is considered a paradigm for chaotic behavior in three-dimensional continuous differential systems. After the appearance of such a system in 1963, several Lorenz-like chaotic systems ... -
Symmetry and symmetry breaking for Hénon-type problems involving the 1-Laplacian operator
Pimenta, Marcos T. O.; Gonzaga, Anderson dos Santos (Communications in Contemporary Mathematics, 2022) [Artigo]
In this work, we study a class of Hénon-type equations which involve the 1-Laplacian operator in the unit ball. Under mild assumptions on the nonlinearity, the existence of radial solutions is proved and, for a parameter ... -
A Machine Learning Strategy Based on Kittler’s Taxonomy to Detect Anomalies and Recognize Contexts Applied to Monitor Water Bodies in Environments
Dias, Maurício Araújo; Marinho, Giovanna Carreira ; Negri, Rogério Galante ; Casaca, Wallace ; ; Eler, Danilo Medeiros (Remote Sensing, 2022) [Artigo]
Environmental monitoring, such as analyses of water bodies to detect anomalies, is recog-nized worldwide as a task necessary to reduce the impacts arising from pollution. However, the large number of data available to be ... -
Mid-reversibility properties of semigroup actions on homogeneous spaces
Reis, Ronan A.; ; Rocha, Victor H. L. (Semigroup Forum, 2022) [Artigo]
In this paper we study mid-reversibility of subsemigroups acting on homogeneous spaces. The mid-reversor set of a subsemigroup is defined and it is described in terms of the invariant control sets for semigroups acting on ... -
Nodal Solutions to Quasilinear Elliptic Problems Involving the 1-Laplacian Operator via Variational and Approximation Methods
; Pimenta, Marcos T. O. (Indiana University Mathematics Journal, 2022) [Artigo]
In this work we use two different methods to get nodal solutions to quasilinear elliptic problems involving the 1-Laplacian operator. In the first one, we develop an approach based on a minimization of the energy functional ... -
Semi-automatic CNN Architectural Pruning using the Bayesian Case Model and Dimensionality Reduction Visualization
Marcilio-Jr, Wilson E.; Eler, Danilo ; Guilherme, Ivan ; ; ; (Proceedings Of The 17th International Joint Conference On Computer Vision, Imaging And Computer Graphics Theory And Applications (ivapp), Vol 3, 2022) [Trabalho apresentado em evento]
Visualization techniques have been applied to reasoning about complex machine learning models. These visual approaches aim to enhance the understanding of black-box models' decisions or guide in hyperparameters configuration, ... -
Software Quality as a Subsidy for Teaching Programming
Gomes, Pedro Henrique; Garcia, Rogerio Eduardo ; Eler, Danilo Medeiros ; Correia, Ronaldo Celso ; Junior, Celso Olivete (Proceedings - Frontiers in Education Conference, FIE, 2021) [Trabalho apresentado em evento]
Well-written code (which meets standards, conventions, and quality specifications) is often associated with the programmer's experience, which is why companies have been looking for increasingly qualified professionals. ... -
Toward prioritization of self-admitted technical debt: an approach to support decision to payment
de Lima, Bruno Santos; Garcia, Rogerio Eduardo ; Eler, Danilo Medeiros (Software Quality Journal, 2022) [Artigo]
Technical Debt (TD) is a metaphor that describes the cost–benefit relationship between postponing technical development activities and the consequences of this long-term postponement. The lack of TD Management compromises ... -
Different formulations to solve the giesekus model for flow between two parallel plates
; ; Brandi, Analice Costacurta; ; (Applied Sciences (Switzerland), 2021) [Artigo]
This work presents different formulations to obtain the solution for the Giesekus constitutive model for a flow between two parallel plates. The first one is the formulation based on work by Schleiniger, G; Weinacht, R.J., ... -
Investigating multipath mitigation for kinematic applications using wavelet techniques
De Souza, Eniuce M.; Monico, João F.G. ; Pagamisse, Aylton (ENC-GNSS 2008 - European Navigation Conference, 2008) [Trabalho apresentado em evento]
Multipath is the phenomenon that occurs when the signal from GNSS satellites reflects on objects surrounding the survey environment and reaches the receiver's antenna through multiple paths. Usually, the receiver collects ... -
The use of Horizon graphs to visualize bilateral biomechanical time-series of multiple joints
; ; Shimabukuro, Milton Hirokazu; ; de Souza, Thales Rezende ; (MethodsX, 2021) [Artigo]
Movement analysis provides a vast amount of data, which, frequently, are not used in the clinical decision-making process. For example, traditional gait data visualization is based on a time-based display of joint angles, ... -
Horizontal scalability analysis in a hbase cluster
Dos Santos, Cedryk Augusto; de Lima, Bruno Santos ; Cayres, Leandro Ungari ; Garcia, Rogério Eduardo ; Olivete Junior, Celso ; Eler, Danilo Medeiros ; Correia, Ronaldo Celso Messias (RISTI - Revista Iberica de Sistemas e Tecnologias de Informacao, 2020) [Artigo]
Horizontal Scalability allows resources to be distributed by the addition of nodes, being made more flexible by the NoSQL Database. This work evaluates the horizontal scalability potential of a Hbase Database cluster, ... -
Teaching and learning software project management: A hands-on approach
Garcia, Rogério Eduardo; Correia, Ronaldo Celso Messias ; Olivete, Celso ; Brandi, Analice Costacurta ; (Proceedings - Frontiers in Education Conference, FIE, 2015) [Trabalho apresentado em evento]
Project management is an essential activity across several areas, including Software Engineering. Through good management it is possible to achieve deadlines, budgets goals and mainly delivering a product that meets customer ... -
Investigating multipath mitigation for kinematic applications using wavelet techniques
De Souza, Eniuce M.; Monico, João F.G. ; Pagamisse, Aylton (ENC-GNSS 2008 - European Navigation Conference, 2008) [Trabalho apresentado em evento]
Multipath is the phenomenon that occurs when the signal from GNSS satellites reflects on objects surrounding the survey environment and reaches the receiver's antenna through multiple paths. Usually, the receiver collects ... -
Desenvolvimento de sistemas para dispositivos móveis: Uma solução baseada em framework
Da Rocha, Alexander Haroldo; Correia, Ronaldo Celso Messias ; Garcia, Rogério Eduardo (Actas da 4a Conferencia Iberica de Sistemas e Tecnologias de Informacao, CISTI 2009, 2009) [Trabalho apresentado em evento]
The technological evolution in wireless communications have motivated the development of systems for mobile equipments. However, such systems have not only constraints on environment execution, but also the need of ... -
MySQLite Sync: Middleware for stored data synchronization in mobile devices and DBMSs
Zaia, Guilherme Palmeira; Correia, Ronaldo Celso Messias ; Garcia, Rogério Eduardo ; Olivete, Celso (Proceedings of the 2014 Latin American Computing Conference, CLEI 2014, 2014) [Trabalho apresentado em evento]
Data synchronization is a process of establishing equivalence among two data collections. It is essential to distribute databases and several techniques have been implemented in Database Management Systems (DBMS), but it ... -
Detecção e afinamento de bordas em direções previamente conhecidas
Artero, Almir Olivette; Tommaselli, Antonio Maria Garcia (Boletim de Ciencias Geodesicas, 2009) [Artigo]
This work presents a study on the generation of digital masks aiming at edge detection with previously known directions. This solution is important when edge direction is available either from a direction histogram or from ...