Recent Submissions

  • SMS Spam Detection Through Skip-gram Embeddings and Shallow Networks

    de Sousa, Gustavo José Autor UNESP; Pedronette, Daniel Carlos Guimarães Autor UNESP; Papa, João Paulo Autor UNESP; Guilherme, Ivan Rizzo Autor UNESP (Findings of the Association for Computational Linguistics: ACL-IJCNLP 2021, 2021) [Trabalho apresentado em evento]
    The drastic decrease in mobile SMS costs turned phone users more prone to spam messages, usually with unwanted marketing or questionable content. As such, researchers have proposed different methods for detecting SMS spam ...
  • When External Knowledge Does Not Aggregate in Named Entity Recognition

    Privatto, Pedro Ivo Monteiro Autor UNESP; Guilherme, Ivan Rizzo Autor UNESP (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 2021) [Trabalho apresentado em evento]
    In the different areas of knowledge, textual data are important sources of information. This way, Information Extraction methods have been developed to identify and structure information present in textual documents. In ...
  • Mathematical modelling, nonlinear dynamics, bifurcation, synchronization and control of mechanisms driven by power supply

    Balthazar, José Manoel Autor UNESP; Gonçalves, Paulo Batista; Tusset, Angelo Marcelo; Litak, Grzegorz; Bueno, Átila Madureira Autor UNESP; Ribeiro, Mauricio Aparecido (European Physical Journal: Special Topics, 2021) [Editorial]
    The special issue entitled “Mathematical modelling, nonlinear dynamics, bifurcation, synchronization and control of mechanisms driven by power supply,” published by The European Physical Journal: Special Topics (EPJST), ...
  • Design of frameworks for self-adaptive service-oriented applications: A systematic analysis

    Filisbino Passini, William Autor UNESP; Aparecida Lana, Cristiane; Pfeifer, Vinicius Autor UNESP; Affonso, Frank José Autor UNESP (Software - Practice and Experience, 2022) [Artigo]
    Self-adaptive service-oriented Applications (Self-Apps) must be able to understand themselves or the environment in which they are executed, and propose solutions to meet changing conditions. The development of these ...
  • Short comments on chaotic behavior of a double pendulum with two subharmonic frequencies and in the main resonance zone

    Avanço, Rafael Henrique; Balthazar, José Manoel Autor UNESP; Tusset, Ângelo Marcelo; Ribeiro, Mauricio Aparecido (ZAMM Zeitschrift fur Angewandte Mathematik und Mechanik, 2021) [Artigo]
    The parametric pendulum and others different pendular mechanisms were extensively analyzed in current literature because of the chaotic motions. Recently, practical reasons, like energy harvesting, motivated the study of ...
  • Financial education in high school: An analysis of didactic activities related to uniform periodic series from the point of view of critical mathematics education

    Hartmann, Andrei Luís Berres Autor UNESP; De Cássia Pistóia Mariani, Rita; Maltempi, Marcus Vinicius Autor UNESP (Bolema - Mathematics Education Bulletin, 2021) [Artigo]
    The objective of this study was to identify and analyze didactic activities developed in High School which may involve decision making in economic-financial situations related to uniform periodic series. Perspectives related ...
  • A Brief Analysis of Artificial Satellites Solar Panels Deployment Considering a Nonlinear Dynamic Model

    Avanço, Rafael; Arias, Raibel; Balthazar, José Manoel Autor UNESP; Tusset, Ângelo Marcelo; Ribeiro, Maurício Aparecido; Janzen, Frederic Conrad; Bueno, Átila Madureira Autor UNESP (Advanced Structured Materials, 2021) [Capítulo de livro]
    The present analysis is focused on the nonlinear dynamics of a solar panel opening during the trajectory of a satellite around the Earth, analyzing the dynamics between energy sources and structural response that must not ...
  • Analysis of double-frequency jitter on time-delayed oscillators networks and perturbations adjustment in clock

    Felix, R. O. Autor UNESP; Bueno, A. M. Autor UNESP; Correa, D. P.F.; Balthazar, J. M. Autor UNESP (European Physical Journal: Special Topics, 2021) [Artigo]
    The delay in signal transmission for oscillator networks influences in the synchronization, getting oscillatory behavior. The synchronization occurs by the phase-locked loops (PLL), synchronizing the local oscillator with ...
  • Stationkeeping controllers for Earth–Moon L1 and L2 libration points halo orbits

    Marsola, Thiago César Lousada; da Silva Fernandes, Sandro; Balthazar, José Manoel Autor UNESP (Journal of the Brazilian Society of Mechanical Sciences and Engineering, 2021) [Resenha]
    This paper considers the dynamics of the circular restricted three-body problem (CRTBP) for the Earth–Moon system designing stationkeeping controllers at periodic orbits. Taking into account the L1 and L2 equilibrium points ...
  • Preface

    Balthazar, José Manoel Autor UNESP (Mechanisms and Machine Science, 2021) [Editorial]
  • Mathematical model and dynamic analysis of pendulum system excitation via an electro-dynamical shaker

    Marques, Carlos Eduardo Autor UNESP; Balthazar, Jose Manoel Autor UNESP; Ribeiro, Mauricio Aparecido; Lenz, Wagner Barth; Tusset, Angelo Marcelo (Mathematics in Engineering, Science and Aerospace, 2020) [Artigo]
    In this paper, we present a mathematical model and numerical investigations of a pendulum system excited by an EDS (Electro-Dynamical Shaker). The dynamic analysis is considered by history of the time, phase plane, Poincaré ...
  • Behaviour dynamics of biochemistry reaction

    Ribeiro, Mauricio A.; Szesz, Aryadyne Bueno Rocha; Novatski, Andressa; Lenzi, Giane Gonçalves; Lenz, Wagner Barth; Balthazar, Jose Manoel Autor UNESP; Tusset, Angelo Marcelo (Mathematics in Engineering, Science and Aerospace, 2020) [Artigo]
    In this paper, we investigated the importance of the peroxidase in the enzymatic reactions of living organisms, analyzing the dynamic behavior of a mathematical model that describes the dynamics of the kinetic reaction of ...
  • On energy harvesting from ambient vibrations through an oscillating pendulum system fixed to a suspended plataform

    Tusset, Angelo Marcelo; Marques, Carlos Eduardo Autor UNESP; Balthazar, Jose Manoel Autor UNESP; Ribeiro, Mauricio Aparecido; Lenz, Wagner Barth (Mathematics in Engineering, Science and Aerospace, 2020) [Artigo]
    In this paper, we present numerical investigations of a pendulum system to harvest energy from the ambient. The mathematical model of the pendulum is obtained considering a harmonic displacement of its base. For power ...
  • Robust joint space control of a 6 DOF parallel robot

    Becerra-Vargas, Mauricio Autor UNESP; Bueno, Atila Madureira Autor UNESP; Vargas, Otavio Delboni Autor UNESP; Balthazar, José Manoel Autor UNESP (2016 IEEE Conference on Control Applications, CCA 2016, 2016) [Trabalho apresentado em evento]
    The purpose of this study is to apply robust inverse dynamics control for a 6 DOF parallel robot. The implementation is performed considering a simplification of the inverse dynamics control law by assuming the control law ...
  • Special cases of damping in vibrating dynamical systems

    Balthazar, José Manoel Autor UNESP; Mucheroni, Mario Francisco; Tsunaki, Roberto Hideaki (Proceedings of SPIE - The International Society for Optical Engineering, 1994) [Trabalho apresentado em evento]
    Nonlinear mass-spring-damper system with two degrees of freedom are analyzed and discussed. A modified SHAW-PIERRE's algorithm is also discussed in order to obtain bifurcating normal modes and conditions for the existence ...
  • Mathematical modelling for critical statistics education

    Sampaio, Luana Oliveira Autor UNESP; Wodewotzki, Maria Lucia Lorenzetti Autor UNESP (The Teaching and Learning of Statistics: International Perspectives, 2015) [Capítulo de livro]
    This study involved 55 students of the discipline Statistics for Administration. With them, we conducted an extracurricular activity through Mathematical Modelling (MM) in an attempt to create conditions for a Critical ...
  • Selection of an offshore petroleum production system by evaluating an environmental impact index

    Gonçalves, Maiara Moreira; Morooka, Celso Kazuyuki; Guilherme, Ivan Rizzo Autor UNESP (Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE, 2014) [Trabalho apresentado em evento]
    The development of an offshore petroleum production system corresponds to define a set of equipment to make possible oil and gas extraction from an underwater petroleum reservoir. To better comprehension of the process, ...
  • Online distance mathematics education in Brazil: Research, practice and policy

    Maltempi, Marcus Vinicius Autor UNESP; Malheiros, Ana Paula dos Santos (ZDM - International Journal on Mathematics Education, 2010) [Artigo]
    In this article, we address online distance mathematics education research and practice in Brazil, which are relative newcomers to the educational scene. We present the national context of education in Brazil, highlighting ...
  • Improving operational safety on subsea wells with qualitative and dynamic risk assessment

    Petersen, Flavia; Miura, Kazuo; Da Fonseca, Tiago; Mendes, Jose Ricardo; Guilherme, Ivan Rizzo Autor UNESP; Morooka, Celso (World Oil, 2012) [Artigo]
  • Optimal pest control problem in population dynamics

    Rafikov, Marat; Balthazar, José Manoel Autor UNESP (Computational and Applied Mathematics, 2005) [Artigo]
    One of the main goals of the pest control is to maintain the density of the pest population in the equilibrium level below economic damages. For reaching this goal, the optimal pest control problem was divided in two parts. ...

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