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  1. To facilitate the development of multi-agent systems and improve the reusability, robustness and feasibility of these systems, we have developed a role-based agent development framework (RADE). In this paper, ...

    Authors: Xiaoqin Zhang, Haiping Xu and Bhavesh Shrestha

    Citation: Journal of the Brazilian Computer Society 2007 13:BF03192409

    Content type: OriginalPaper

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  2. In order to cope with the heterogeneity, autonomy and diversity of interests among the different agents in open multi-agent systems, several governance mechanisms have been defined. Governance mechanism enforc...

    Authors: Viviane Torres da Silva, Fernanda Duran, José Guedes and Carlos J. P. de Lucena

    Citation: Journal of the Brazilian Computer Society 2007 13:BF03192407

    Content type: OriginalPaper

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  3. In early 2003, the Brazilian government accelerated the decision process on analog to digital transition of terrestrial TV broadcast infrastructure, naming this initiative The Brazilian Digital Television Syst...

    Authors: Eduardo Rodrigues de Carvalho, Gil Garcia de Barros, Laisa Caroline de Paula Costa, Regis Rossi Alves Faria, Rogério Pernas Nunes, Roseli de Deus Lopes and Marcelo Knörich Zuffo

    Citation: Journal of the Brazilian Computer Society 2007 13:BF03192404

    Content type: OriginalPaper

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  4. The objective of this paper is to present a general overview of the Innovative Modulation System Project — MI-SBTVD — developed for the Brazilian Digital TV System. The MI-SBTVD Project includes an LDPC high p...

    Authors: Luciano L. Mendes, José Marcos C. Brito, Fabbryccio A. Cardoso, Dayan A. Guimarães, Gustavo C. Lima, Geraldo G. R. Gomes, Dalton S. Arantes and Richard D. Souza

    Citation: Journal of the Brazilian Computer Society 2007 13:BF03192402

    Content type: OriginalPaper

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  5. The recent development of the research on digital terrestrial television in Brazil has led the country.s government to state a series of premises in which the government shows to care not only for technology i...

    Authors: Guido Lemos de Souza Filho, Luiz Eduardo Cunha Leite and Carlos Eduardo Coelho Freire Batista

    Citation: Journal of the Brazilian Computer Society 2007 13:BF03192401

    Content type: OriginalPaper

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  6. As in all main terrestrial DTV Systems, the Brazilian middleware, named Ginga, supports both declarative applications (through its presentation, or declarative, environment Ginga-NCL) and procedural applicatio...

    Authors: Luiz Fernando Gomes Soares, Rogério Ferreira Rodrigues and Márcio Ferreira Moreno

    Citation: Journal of the Brazilian Computer Society 2007 13:BF03192400

    Content type: OriginalPaper

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  7. This paper presents the architecture, design, validation, and hardware prototyping of the main architectural blocks of main profile H.264/AVC decoder, namely the blocks: inverse transforms and qu...

    Authors: Luciano V. Agostini, Arnaldo P. Azevedo Filho, Wagston T. Staehler, Vagner S. Rosa, Bruno Zatt, Ana Cristina M. Pinto, Roger Endrigo Porto, Sergio Bampi and Altamiro A. Susin

    Citation: Journal of the Brazilian Computer Society 2007 13:BF03192399

    Content type: OriginalPaper

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  8. This paper presents a new complex valued radial basis function (RBF) neural network (NN) with phase transmittance between the input nodes and output, which makes it suitable for channel equalizat...

    Authors: Diego Vier Loss, Maria Cristina Felippetto De Castro, Paulo Roberto Girardello Franco and Fernando César Comparsi de Castro

    Citation: Journal of the Brazilian Computer Society 2007 13:BF03192398

    Content type: OriginalPaper

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  9. Receivers for wireless Orthogonal Frequency Division Multiplexing (OFDM) systems usually perform the channel estimation based on pilot carriers in known positions of the channel spectrum. Interpo...

    Authors: Fábio D’Agostini, Sirlesio Carboni Júnior, Maria C. F. De Castro and Fernando C. C. De Castro

    Citation: Journal of the Brazilian Computer Society 2007 13:BF03192397

    Content type: OriginalPaper

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  10. Software Process Improvement (SPI) is one of the main software development challenges. However, SPI standards and models (CMMI, SPICE) have not been always adopted with success. The current problem is a lack o...

    Authors: Paula Ventura Martins and Alberto Rodrigues da Silva

    Citation: Journal of the Brazilian Computer Society 2006 12:BF03194496

    Content type: OriginalPaper

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  11. In this article, we gather results from several projects we conducted recently that use some kind of agile method. We analyze both academic and governmental software development projects, some of them using ag...

    Authors: Danilo Sato, Dairton Bassi, Mariana Bravo, Alfredo Goldman and Fabio Kon

    Citation: Journal of the Brazilian Computer Society 2006 12:BF03194495

    Content type: OriginalPaper

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  12. Software engineering has been striving for years to improve the practice of software development and maintenance. Documentation has long been prominent on the list of recommended practices to improve developme...

    Authors: Sergio Cozzetti B. de Souza, Nicolas Anquetil and Káthia M. de Oliveira

    Citation: Journal of the Brazilian Computer Society 2006 12:BF03194494

    Content type: OriginalPaper

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  13. This paper presents an empirical comparison of the growth characteristics of four code coverage measures, block, decision, c-use and p-use, as testing is increased. Due to the theoretical foundations underlyin...

    Authors: Swapna S. Gokhale and Robert E. Mullen

    Citation: Journal of the Brazilian Computer Society 2006 12:BF03194493

    Content type: OriginalPaper

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  14. This paper gives a 40 year overview of the evolution of experimental software engineering, from the past to the future, from a personal perspective. My hypothesis is that my work followed the evolution of the ...

    Authors: Victor Robert Basili

    Citation: Journal of the Brazilian Computer Society 2006 12:BF03194492

    Content type: OriginalPaper

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  15. The number of open specifications of middleware systems and middleware services is increasing. Despite their complexity, they are traditionally described through APIs (the operation signatures) and informal pr...

    Authors: Nelson Souto Rosa and Paulo Roberto Freire Cunha

    Citation: Journal of the Brazilian Computer Society 2006 12:BF03192395

    Content type: OriginalPaper

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  16. Mutation Testing originated from a classical method for digital circuit testing and today is used at program and specification levels. It can be used either to generate or to assess the quality of test sets. I...

    Authors: A. M. R. Vincenzi, A. S. Simão, M. E. Delamaro and J. C. Maldonado

    Citation: Journal of the Brazilian Computer Society 2006 12:BF03192394

    Content type: OriginalPaper

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  17. Test synthesis (or test generation) can be described as follows: from a formal specification of an implementation under test (IUT), and from a test purpose describing behaviors to be tested, the aim is to synthes...

    Authors: Ahmed Khoumsi

    Citation: Journal of the Brazilian Computer Society 2006 12:BF03192393

    Content type: OriginalPaper

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  18. This paper describes an accurate method for computing the dimensions of boxes directly from perspective projection images acquired by conventional cameras. The approach is based on projective geometry and comp...

    Authors: Leandro A. F. Fernandes, Manuel M. Oliveira, Roberto da Silva and Gustavo J. Crespo

    Citation: Journal of the Brazilian Computer Society 2006 12:BF03192392

    Content type: OriginalPaper

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  19. A critical issue of applying Linear Discriminant Analysis (LDA) is both the singularity and instability of the within-class scatter matrix. In practice, particularly in image recognition applications such as f...

    Authors: Carlos Eduardo Thomaz, Edson Caoru Kitani and Duncan Fyfe Gillies

    Citation: Journal of the Brazilian Computer Society 2006 12:BF03192391

    Content type: OriginalPaper

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  20. Infeasible paths constitute a bottleneck for the complete automation of software testing, one of the most expensive activities of software quality assurance. Research efforts have been spent on infeasible path...

    Authors: Silvia Regina Vergilio, José Carlos Maldonado and Mario Jino

    Citation: Journal of the Brazilian Computer Society 2006 12:BF03192389

    Content type: OriginalPaper

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  21. With the growing dissemination and reliability of wireless networks and the emergence of devices with increasing processing and communication power, applications that up to now were restricted to the PCs are b...

    Authors: Regina Borges de Araujo, Alessandro Rodrigues e Silva and Glauco Todesco

    Citation: Journal of the Brazilian Computer Society 2006 12:BF03192388

    Content type: OriginalPaper

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  22. Aspect-oriented software development promotes improved separation of concerns by introducing a new modular unit, called aspect, for the modularization of crosscutting concerns. As a new kind of modular unit, a...

    Authors: Christina Chavez, Alessandro Garcia, Uirá Kulesza, Cláudio Sant’Anna and Carlos Lucena

    Citation: Journal of the Brazilian Computer Society 2006 12:BF03192387

    Content type: OriginalPaper

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  23. We present a novel method to reduce the effect of specularities in digital images. Our approach relies on a simple modification of the capture setup: a multi-flash camera is used to take multiple pictures of t...

    Authors: Rogerio Feris, Ramesh Raskar, Kar-Han Tan and Matthew Turk

    Citation: Journal of the Brazilian Computer Society 2006 12:BF03192386

    Content type: OriginalPaper

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  24. In 1923, Eduard Helly published his celebrated theorem, which originated the well known Helly property. Say that a family of subsets has the Helly property when every subfamily of it, formed by pairwise inters...

    Authors: Mitre C. Dourado, Fábio Protti and Jayme L. Szwarcfiter

    Citation: Journal of the Brazilian Computer Society 2006 12:BF03192385

    Content type: OriginalPaper

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  25. This paper presents a non-iterative regularized inverse solution to the image interpolation problem. This solution is based on the segmentation of the image to be interpolated into overlapping blocks and the i...

    Authors: S. E. El-Khamy, M. M. Hadhoud, M. I. Dessouky, B. M. Salam and F. E. Abd El-Samie

    Citation: Journal of the Brazilian Computer Society 2005 11:BF03192383

    Content type: OriginalPaper

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  26. This paper proposes a method for color gradient computation applied to morphological segmentation of color images. The weighted gradient (with weights estimated automatically), proposed in this paper, applied ...

    Authors: Franklin César Flores, Airton Marco Polidório and Roberto de Alencar Lotufo

    Citation: Journal of the Brazilian Computer Society 2005 11:BF03192382

    Content type: OriginalPaper

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  27. Metric Access Methods (MAM) are employed to accelerate the processing of similarity queries, such as the range and the k-nearest neighbor queries. Current methods, such as the Slim-tree and the M-tree, improve...

    Authors: Marcos R. Vieira, Caetano Traina, Fabio J. T. Chino and Agma J. M. Traina

    Citation: Journal of the Brazilian Computer Society 2005 11:BF03192381

    Content type: OriginalPaper

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  28. The design and development of distributed software is a complex task. This was not different in OurGrid, a project whose objective was to develop a free-to-join grid. After two years of development, it was nec...

    Authors: Ayla Dantas, Walfredo Cirne and Katia Saikoski

    Citation: Journal of the Brazilian Computer Society 2005 11:BF03192380

    Content type: OriginalPaper

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  29. In this paper we describe an aspect-oriented infrastructure to handle dynamic AOP based on the Lua language. This infrastructure is composed of AspectLua, a Lua extension that allows the declaration of aspects...

    Authors: Nélio Cacho, Thaís Batista and Fabrício Fernandes

    Citation: Journal of the Brazilian Computer Society 2005 11:BF03192379

    Content type: OriginalPaper

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  30. Ecolingua is an ontology for ecological quantitative data, which has been designed through reuse of a conceptualisation of quantities and their physical dimensions provided by theEngMath family o...

    Authors: Virgínia Brilhante

    Citation: Journal of the Brazilian Computer Society 2005 11:BF03192376

    Content type: OriginalPaper

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  31. Software engineering is knowledge-intensive activity and knowledge is thought to be the most important asset in an organization. Therefore this paper presents an approach to support Knowledge Management in Sof...

    Authors: Karina Villela, Gleison Santos, Lílian Schnaider, Ana Regina Rocha and Guilherme Horta Travassos

    Citation: Journal of the Brazilian Computer Society 2005 11:BF03192375

    Content type: OriginalPaper

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  32. Workflow management systems usually interpret a workflow definition rigidly. However, there are real life situations where users should be allowed to deviate from the prescribed static workflow definition for ...

    Authors: Tatiana A. S. C. Vieira, Marco A. Casanova and Luis G. Ferrão

    Citation: Journal of the Brazilian Computer Society 2005 11:BF03192374

    Content type: OriginalPaper

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  33. Searching for information in long videos can be a time-consuming experience. In this paper, we describe OnAIR, an ontology-aided information retrieval system applied to retrieve clips from video collections.

    Authors: Christian Paz-Trillo, Renata Wassermann and Paula P. Braga

    Citation: Journal of the Brazilian Computer Society 2005 11:BF03192373

    Content type: OriginalPaper

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  34. Virtual organization refers to the temporary teaming of enterprises. By sharing physical, human and knowledge resources via information technologies, a virtual organization enables member enterprises to share ...

    Authors: Qinhe Zheng and Xiaoqin Zhang

    Citation: Journal of the Brazilian Computer Society 2005 11:BF03192371

    Content type: OriginalPaper

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  35. Knowledge Management (KM) is considered by many organizations a key aspect in sustaining competi-tive advantage. Designing appropriate KM process and enabling technology face considerable risks, as they must b...

    Authors: Renata S. S. Guizzardi and Anna Perini

    Citation: Journal of the Brazilian Computer Society 2005 11:BF03192370

    Content type: OriginalPaper

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  36. This paper introduces systems of exchange values as tools for the organization of multi-agent systems. Systems of exchange values are defined on the basis of the theory of social exchanges, developed by Piaget...

    Authors: Gracaliz P. Dimuro, A. C. Rocha Costa and Luiz A. M. Palazzo

    Citation: Journal of the Brazilian Computer Society 2005 11:BF03192369

    Content type: OriginalPaper

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  37. Current and future computerized systems and infrastructures are going to be based on the layering of different systems, designed at different times, with different technologies and components and difficult to ...

    Authors: Paolo Lollini, Andrea Bondavalli and Felicita Di Giandomenico

    Citation: Journal of the Brazilian Computer Society 2004 10:BF03192366

    Content type: OriginalPaper

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  38. Due to their fundamental role in the design of fault-tolerant distributed systems, consensus protocols have been widely studied. Most of the research in this area has focused on providing ways for circumventin...

    Authors: Lívia Sampaio, Francisco Brasileiro, Raul Ceretta Nunes and Ingrid Jansch-Pôrto

    Citation: Journal of the Brazilian Computer Society 2004 10:BF03192364

    Content type: OriginalPaper

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  39. Authors: Rogério de Lemos and Eliane Martins

    Citation: Journal of the Brazilian Computer Society 2004 10:BF03192361

    Content type: Letter From the Guest Editors

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