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  1. Content type: OriginalPaper

    This paper analyses aspects associated with the development of joint human-agent planning agents, showing that they can be implemented, in a unified way, via a constraint-based ontology and related functions. ...

    Authors: Clauirton de Albuquerque Siebra and Natasha Correia Queiroz Lino

    Citation: Journal of the Brazilian Computer Society 2009 15:BF03194512

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  2. Content type: OriginalPaper

    Despite the many research efforts addressing the integration of mobile nodes into grids, only a few of them have considered the establishment of mobile grids over wireless ad hoc networks (hereafter,mobile ad hoc...

    Authors: Antônio Tadeu Azevedo Gomes, Artur Ziviani, Luciana dos Santos Lima and Markus Endler

    Citation: Journal of the Brazilian Computer Society 2009 15:BF03194510

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  3. Content type: OriginalPaper

    This article introduces an open-source module responsible for the presentation of verbal (speech) and corporal (animation) behaviors of animated pedagogical agents. This module can be inserted into any learnin...

    Authors: Ronaldo Motola, Patrícia Augustin Jaques, Margarete Axt and Rosa Vicari

    Citation: Journal of the Brazilian Computer Society 2009 15:BF03194509

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  4. Content type: OriginalPaper

    The Lattes platform is the major scientific information system maintained by the National Council for Scientific and Technological Development (CNPq). This platform allows to manage the curricular information ...

    Authors: Jesús Pascual Mena-Chalco and Roberto Marcondes Cesar Junior

    Citation: Journal of the Brazilian Computer Society 2009 15:BF03194511

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  5. Content type: OriginalPaper

    As a mobile robot navigates through an indoor environment, the condition of the floor is of low (or no) relevance to its decisions. In an outdoor environment, however, terrain characteristics play a major role...

    Authors: Armando Alves Neto, Douglas Guimarães Macharet, Víctor Costa da Silva Campos and Mario Fernando Montenegro Campos

    Citation: Journal of the Brazilian Computer Society 2009 15:BF03194503

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  6. Content type: OriginalPaper

    In this paper, we combine a path planner based on Boundary Value Problems (BVP) and Monte Carlo Localization (MCL) to solve the wake-up robot problem in a sparse environment. This problem is difficult since la...

    Authors: Edson Prestes, Marcus Ritt and Gustavo Führ

    Citation: Journal of the Brazilian Computer Society 2009 15:BF03194506

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  7. Content type: OriginalPaper

    The cooperative multirobot localization problem consists in localizing each robot in a group within the same environment, when robots share information in order to improve localization accuracy. It can be achi...

    Authors: Valguima Victoria Viana Aguiar Odakura, Reinaldo Augusto da Costa Bianchi and Anna Helena Reali Costa

    Citation: Journal of the Brazilian Computer Society 2009 15:BF03194504

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  8. Content type: OriginalPaper

    The computational models of visual attention, originally proposed as cognitive models of human attention, nowadays are being used as front-ends to some robotic vision systems, like automatic object recognition...

    Authors: Milton Roberto Heinen and Paulo Martins Engel

    Citation: Journal of the Brazilian Computer Society 2009 15:BF03194502

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  9. Content type: OriginalPaper

    Reinforcement Learning is carried out on-line, through trial-and-error interactions of the agent with the environment, which can be very time consuming when considering robots. In this paper we contribute a ne...

    Authors: Valdinei Freire da Silva and Anna Helena Reali Costa

    Citation: Journal of the Brazilian Computer Society 2009 15:BF03194507

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  10. Content type: OriginalPaper

    The use of Autonomous Underwater Vehicles (AUVs) for underwater tasks is a promising robotic field. These robots can carry visual inspection cameras. Besides serving the activities of inspection and mapping, t...

    Authors: Silvia Silva da Costa Botelho, Paulo Lilles Jorge Drews Junior, Mônica da Silva Figueiredo, Celina Haffele Da Rocha and Gabriel Leivas Oliveira

    Citation: Journal of the Brazilian Computer Society 2009 15:BF03194505

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  11. Content type: OriginalPaper

    The analysis of volumetric datasets is the main concern in many areas ranging from geophysics to biomedical sciences. The direct visualization of these data plays an important role in this scenario, and in spi...

    Authors: Rafael Huff, Roberto Silveira da Rosa, Luciana Nedel and Carla Maria Dal Sasso Freitas

    Citation: Journal of the Brazilian Computer Society 2009 15:BF03194498

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  12. Content type: OriginalPaper

    Geographic Data Warehouses (GDW) are one of the main technologies used in decision-making processes and spatial analysis, and the literature proposes several conceptual and logical data models for GDW. However...

    Authors: Thiago Luís Lopes Siqueira, Cristina Dutra de Aguiar Ciferri, Valéria Cesário Times, Anjolina Grisi de Oliveira and Ricardo Rodrigues Ciferri

    Citation: Journal of the Brazilian Computer Society 2009 15:BF03194499

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  13. Content type: OriginalPaper

    With the increasing popularity of web-based map browsers, remotely obtaining a high quality depiction of cartographic information has become commonplace. Most web mapping systems, however, rely on high-capacit...

    Authors: José Augusto Sapienza Ramos, Claudio Esperança and Esteban Walter Gonzales Clua

    Citation: Journal of the Brazilian Computer Society 2009 15:BF03194500

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  14. Content type: OriginalPaper

    Mobile phones are a widespread platform for ICT applications because they are highly pervasive in contemporary society. Hence, we can think of mobile gaming as a serious candidate to being a prominent form of ...

    Authors: Luis Valente, Clarisse Sieckenius de Souza and Bruno Feijó

    Citation: Journal of the Brazilian Computer Society 2009 15:BF03192576

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  15. Content type: OriginalPaper

    The quest for interoperability is one of the main driving forces behind international organizations such as OGC and W3C. In parallel, a trend in systems design and development is to break down GIS functionalit...

    Authors: Gilberto Zonta Pastorello, Rodrigo Dias Arruda Senra and Claudia Bauzer Medeiros

    Citation: Journal of the Brazilian Computer Society 2009 15:BF03192574

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  16. Content type: OriginalPaper

    Semantic portals are characterized for storing and structuring content according to specific domain ontologies. This content is represented through ontological languages, which enable not only adding semantic ...

    Authors: Fernanda Aparecida Lachtim, Ana Maria de Carvalho Moura and Maria Cláudia Cavalcanti

    Citation: Journal of the Brazilian Computer Society 2009 15:BF03192575

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  17. Content type: OriginalPaper

    Due to the imprecise nature of biological experiments, biological data is often characterized by the presence of redundant and noisy data. This may be due to errors that occurred during data collection, such a...

    Authors: Giampaolo Luiz Libralon, André Carlos Ponce de Leon Ferreira de Carvalho and Ana Carolina Lorena

    Citation: Journal of the Brazilian Computer Society 2009 15:BF03192573

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  18. Content type: OriginalPaper

    This paper addresses the capacitated lot sizing problem (CLSP) with a single stage composed of multiple plants, items and periods with setup carry-over among the periods. The CLSP is well studied and many heur...

    Authors: Mariá C. V. Nascimento and Franklina M. B. Toledo

    Citation: Journal of the Brazilian Computer Society 2008 14:BF03192568

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  19. Content type: OriginalPaper

    We present evaluation results with focus on combined image and efficiency performance of the Gradient Network Method to segment color images, especially images showing outdoor scenes. A brief review of the tec...

    Authors: Aldo von Wangenheim, Rafael F. Bertoldi, Daniel D. Abdala, Michael M. Richter, Lutz Priese and Frank Schmitt

    Citation: Journal of the Brazilian Computer Society 2008 14:BF03192570

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  20. Content type: OriginalPaper

    We present Entropy Guided Transformation Learning models for three Portuguese Language Processing tasks: Part-of-Speech Tagging, Noun Phrase Chunking and Named Entity Recognition. For Part-of-Speech Tagging, w...

    Authors: Ruy Luiz Milidiú, Cícero Nogueira dos Santos and Julio Cesar Duarte

    Citation: Journal of the Brazilian Computer Society 2008 14:BF03192569

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  21. Content type: OriginalPaper

    The potential loss of privacy due to the use of location based applications may be one of the greatest obstacles to their wider acceptance. Nevertheless, most research about privacy management to-date has not ...

    Authors: Vagner Sacramento, Markus Endler and Clarisse de Souza

    Citation: Journal of the Brazilian Computer Society 2008 14:BF03192571

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  22. Content type: OriginalPaper

    This article describes the design, implementation, and experiences with AcMus, an open and integrated software platform for room acoustics research, which comprises tools for measurement, analysis, and simulat...

    Authors: Marcelo Queiroz, Fernando Iazzetta, Fabio Kon, Márcio Henrique A. Gomes, Fábio L. Figueiredo, Bruno Masiero, Leo K. Ueda, Luciana Dias, Mário Henrique C. Torres and Leandro F. Thomaz

    Citation: Journal of the Brazilian Computer Society 2008 14:BF03192566

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  23. Content type: OriginalPaper

    Two implementations of an Evolutionary Sound Synthesis method using the Interaural Time Difference (ITD) and psychoacoustic descriptors are presented here as a way to develop criteria for fitness evaluation. W...

    Authors: José Fornari, Adolfo Maia and Jônatas Manzolli

    Citation: Journal of the Brazilian Computer Society 2008 14:BF03192564

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  24. Content type: OriginalPaper

    The goal of this paper is to describe a systemaided performance and composition tool that aims to expand guitarist capacities by providing innovative ways in which the user can interact with the system. In ord...

    Authors: Leandro L. Costalonga, Rosa M. Vicari and Evandro M. Miletto

    Citation: Journal of the Brazilian Computer Society 2008 14:BF03192562

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  25. Content type: OriginalPaper

    A pitch model is proposed which is supported by a vector representation of tones. First, an algorithm capable of performing the vector addition of the spectral components of two-tone harmonic complexes is intr...

    Authors: Aluizio Arcela

    Citation: Journal of the Brazilian Computer Society 2008 14:BF03192565

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  26. Content type: OriginalPaper

    CinBalada is a system for automatic creation of polyphonic rhythmic performances by mixing elements from different musical styles. This system is based on agents that act as musicians playing percussion instru...

    Authors: Pablo Azevedo Sampaio, Geber Ramalho and Patrícia Tedesco

    Citation: Journal of the Brazilian Computer Society 2008 14:BF03192563

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  27. Content type: OriginalPaper

    This paper presents a non-conventional approach for the automatic music genre classification problem. The proposed approach uses multiple feature vectors and a pattern recognition ensemble approach, according ...

    Authors: Carlos N. Silla, Alessandro L. Koerich and Celso A. A. Kaestner

    Citation: Journal of the Brazilian Computer Society 2008 14:BF03192561

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  28. Content type: Articles

    Supervised statistical learning covers important models like Support Vector Machines (SVM) and Linear Discriminant Analysis (LDA). In this paper we describe the idea of using the discriminant weights given by ...

    Authors: Gilson A. Giraldi, Paulo S. Rodrigues, Edson C. Kitani, João R. Sato and Carlos E. Thomaz

    Citation: Journal of the Brazilian Computer Society 2008 14:BF03192556

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  29. Content type: Articles

    Cooperative manipulation refers to the simultaneous manipulation of a virtual object by multiple users in an immersive virtual environment (VE). In this work, we present techniques for cooperative manipulation...

    Authors: Marcio S. Pinho, Doug A. Bowman and Carla M. Dal Sasso Freitas

    Citation: Journal of the Brazilian Computer Society 2008 14:BF03192559

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  30. Content type: Articles

    Data abstraction is a powerful technique to overcome state explosion in model checking. For CSPZ (a formal integration of the well-known specification languages CSP and Z), current approaches can mechanically abs...

    Authors: Adalberto Farias, Alexandre Mota and Augusto Sampaio

    Citation: Journal of the Brazilian Computer Society 2008 14:BF03192557

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  31. Content type: Articles

    A sandwich problem for property π asks whether there exists a sandwich graph of a given pair of graphs which has the desired property π Graph sandwich problems were first defined in the context of Computationa...

    Authors: Mitre C. Dourado, Priscila Petito, Rafael B. Teixeira and Celina M. H. de Figueiredo

    Citation: Journal of the Brazilian Computer Society 2008 14:BF03192558

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  32. Content type: Articles

    Meeting and managing quality requirements such as performance, security… in a reuse context (software product line…) has a problematic that it is not found in single-systems. In this paper, an overview of aspe...

    Authors: Leire Etxeberria, Goiuria Sagardui and Lorea Belategi

    Citation: Journal of the Brazilian Computer Society 2008 14:BF03192552

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  33. Content type: Articles

    Product-line architectures (PLAs) are an effective mechanism for facilitating the reuse of software components on different mobile devices. Mobile applications are typically delivered to devices using over-the...

    Authors: Jules White, Douglas C. Schmidt, Egon Wuchner and Andrey Nechypurenko

    Citation: Journal of the Brazilian Computer Society 2008 14:BF03192550

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  34. Content type: Regular Articles

    An increasing number of verification tools (e.g., software model-checkers) require the use of Satisfiability Modulo Theories (SMT) solvers to implement the back-ends for the automatic analysis of specification...

    Authors: David Déharbe, Silvio Ranise and Jorgiano Vidal

    Citation: Journal of the Brazilian Computer Society 2008 14:BF03192553

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  35. Content type: Articles

    An obstacle to software reuse is the large number of major modifications that frequently have to be made as a consequence of dependencies within the reused software components. In this paper, common coupling i...

    Authors: Liguo Yu

    Citation: Journal of the Brazilian Computer Society 2008 14:BF03192551

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  36. Content type: Articles

    As demands for behaviorally sophisticated software grow, agent-based systems are increasingly being employed. Software agents are frequently applied to large, complex systems that involve interdisciplinary dev...

    Authors: Shawn A. Bohner, Denis Graĉanin, Michael G. Hinchey and Mohamed Eltoweissy

    Citation: Journal of the Brazilian Computer Society 2007 13:BF03194254

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  37. Content type: Articles

    Transformation Based Learning (TBL) is a Machine Learning technique frequently used in some Natural Language Processing (NLP) tasks. TBL uses rule templates to identify error-correcting patterns. A critical re...

    Authors: Ruy Luiz Milidiú, Julio Cesar Duarte and Cícero Nogueira dos Santos

    Citation: Journal of the Brazilian Computer Society 2007 13:BF03194255

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  38. Content type: Articles

    We consider the problem of surface reconstruction of a geometric object from a finite set of sample points with normals. Our contribution is to present a new scheme for implicit surface reconstruction. Similar...

    Authors: B. Mederos, M. Lage, S. Arouca, F. Petronetto, L. Velho, T. Lewiner and H. Lopes

    Citation: Journal of the Brazilian Computer Society 2007 13:BF03194253

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  39. Content type: Articles

    Mapping is a basic capability for mobile robots. Most applications demand some level of knowledge about the environment to be accomplished. Most mapping approaches in the literature are designed to perform in ...

    Authors: Denis F. Wolf and Gaurav S. Sukhatme

    Citation: Journal of the Brazilian Computer Society 2007 13:BF03194257

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