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Journal of the Brazilian Computer Society
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Page 4 of 8

  1. Authors: Maria Cristina Ferreira de Oliveira
    Citation: Journal of the Brazilian Computer Society 2013 19:100
    Content type: Editorial Published on:

  2. This paper presents a set of novel modifications that can be applied to any grid-based path planning algorithm from the A* family used in mobile robotics. Five modifications are presented regarding the way the...

    Authors: Tiago Pereira do Nascimento, Pedro Costa, Paulo G. Costa, António Paulo Moreira and André Gustavo Scolari Conceição
    Citation: Journal of the Brazilian Computer Society 2012 19:91
    Content type: Original Paper Published on:

  3. This study presents a novel methodology for generating smooth feasible paths for autonomous aerial vehicles in the three-dimensional space based on a variation of the Spatial Quintic Pythagorean Hodographs cur...

    Authors: Armando Alves Neto, Douglas G. Macharet and Mario F. M. Campos
    Citation: Journal of the Brazilian Computer Society 2012 19:93
    Content type: Original Paper Published on:

  4. Authors: Maria Cristina Ferreira de Oliveira
    Citation: Journal of the Brazilian Computer Society 2012 18:90
    Content type: Editorial Published on:

  5. Web image retrieval is a research area that is receiving a lot of attention in the last few years due to the growing availability of images on the Web. Since content-based image retrieval is still considered v...

    Authors: Patrícia Correia Saraiva, João M. B. Cavalcanti, Marcos A. Gonçalves, Katia C. Lage dos Santos, Edleno S. de Moura and Ricardo da S. Torres
    Citation: Journal of the Brazilian Computer Society 2012 19:87
    Content type: Original Paper Published on:

  6. Deaf people have serious difficulties accessing information. The support for sign language (their primary means of communication) is rarely addressed in information and communication technologies. Furthermore,...

    Authors: Tiago Maritan Ugulino de Araújo, Felipe Lacet Silva Ferreira, Danilo Assis Nobre dos Santos Silva, Felipe Hermínio Lemos, Gutenberg Pessoa Neto, Derzu Omaia, Guido Lemos de Souza Filho and Tatiana Aires Tavares
    Citation: Journal of the Brazilian Computer Society 2012 19:86
    Content type: Original Paper Published on:

  7. Reverse engineering techniques are usually applied to extract concrete architecture models. However, these techniques usually extract models that just reveal static architectures, such as class diagrams. On th...

    Authors: Hugo de Brito, Humberto Torres Marques-Neto, Ricardo Terra, Henrique Rocha and Marco Tulio Valente
    Citation: Journal of the Brazilian Computer Society 2012 19:83
    Content type: Original Paper Published on:

  8. Authors: Maria Cristina Ferreira de Oliveira
    Citation: Journal of the Brazilian Computer Society 2012 18:85
    Content type: Editorial Published on:

  9. In wireless sensor networks (WSNs), target tracking algorithms usually depend on geographical information provided by localization algorithms. However, errors introduced by such algorithms affect the performan...

    Authors: Éfren L. Souza, Eduardo F. Nakamura, Horácio A. B. F. de Oliveira and Carlos M. S. Figueiredo
    Citation: Journal of the Brazilian Computer Society 2012 19:84
    Content type: Original Paper Published on:

  10. This paper presents a semi-automated method for the acquisition of common-sense and inferentialist concepts in Portuguese. Its innovative feature is a module of reasoning over the pre-existing knowledge that a...

    Authors: Vladia Pinheiro, Vasco Furtado, Tarcísio Pequeno and Wellington Franco
    Citation: Journal of the Brazilian Computer Society 2012 19:82
    Content type: Original Paper Published on:

  11. Considering learning and how to improve students’ performances, adaptive educational systems must know the way in which an individual student learns best. In this context, this work presents a comparison betwe...

    Authors: Fabiano A. Dorça, Luciano V. Lima, Márcia A. Fernandes and Carlos R. Lopes
    Citation: Journal of the Brazilian Computer Society 2012 19:78
    Content type: Original Paper Published on:

  12. Non-verbal communication is of paramount importance in person-to-person interaction, as emotions are an integral part of human beings. A sociable robot should therefore display similar abilities as a way to in...

    Authors: Rafael A. M. Gonçalves, Diego R. Cueva, Marcos R. Pereira-Barretto and Fabio G. Cozman
    Citation: Journal of the Brazilian Computer Society 2012 19:81
    Content type: Original Paper Published on:

  13. SciPo is a writing tool whose ultimate goal is to assist novice writers in producing scientific writing in Portuguese, focusing primarily on abstracts and introductions from computer science. In this paper, we...

    Authors: Vinícius Mourão Alves de Souza and Valéria Delisandra Feltrim
    Citation: Journal of the Brazilian Computer Society 2012 19:79
    Content type: Original Paper Published on:

  14. Virtual memory mechanisms allow offering more RAM memory space to processes than the amount of memory physically available in the system, using disk space as a memory extension. When there is not enough RAM me...

    Authors: Carlos Maziero, Douglas dos Santos and Altair Santin
    Citation: Journal of the Brazilian Computer Society 2012 19:80
    Content type: Original Paper Published on:

  15. Collaborative filtering (CF) has been an important subject of research in the past few years. Many achievements have been made in this field, however, many challenges still need to be faced, mainly related to ...

    Authors: João Vinagre and Alípio Mário Jorge
    Citation: Journal of the Brazilian Computer Society 2012 18:77
    Content type: WTI Published on:

  17. This paper presents TAL (Template Authoring Language), an authoring language for hypermedia document templates. Templates describe document families with structural or semantic similarities among them. TAL sup...

    Authors: Carlos de Salles Soares Neto, Luiz Fernando Gomes Soares and Clarisse Sieckenius de Souza
    Citation: Journal of the Brazilian Computer Society 2012 18:73
    Content type: WEBMEDIA 2010 Published on:

  18. Authors: Maria Cristina Ferreira de Oliveira
    Citation: Journal of the Brazilian Computer Society 2012 18:76
    Content type: Editorial Published on:

  19. Decision-tree induction is a well-known technique for assigning objects to categories in a white-box fashion. Most decision-tree induction algorithms rely on a sub-optimal greedy top-down recursive strategy fo...

    Authors: Rodrigo C. Barros, Márcio P. Basgalupp, André C. P. L. F. de Carvalho and Marcos G. Quiles
    Citation: Journal of the Brazilian Computer Society 2012 18:75
    Content type: Original Paper Published on:

  20. There are several barriers that prevent Brazilian citizen to access knowledge, including the way in which computational technology is presented considering the diversity of interaction skills in our population...

    Authors: Vânia Paula de Almeida Neris and M. Cecília C. Baranauskas
    Citation: Journal of the Brazilian Computer Society 2012 18:70
    Content type: IHC Published on:

  21. Regular data classification techniques are based mainly on two strong assumptions: (1) the existence of a reasonably large labeled set of data to be used in training; and (2) future input data instances confor...

    Authors: João Roberto Bertini Jr., Alneu de Andrade Lopes and Liang Zhao
    Citation: Journal of the Brazilian Computer Society 2012 18:72
    Content type: WTI Published on:

  22. This paper describes a new method of path-planning for multiple robots in unknown environments. The method, called Space D*, is based on two algorithms: the D*, which is an incremental graph search algorithm, ...

    Authors: Luan Silveira, Renan Q. Maffei, Silvia S. C. Botelho, Paulo L. Drews Jr., Alessandro de L. Bicho and Nelson L. Duarte Filho
    Citation: Journal of the Brazilian Computer Society 2012 18:71
    Content type: Original Paper Published on:

  23. Collaborative tools have been proposed to support different domains, including software development. Despite important previous work on the design of collaborative tools, none directly addresses the required s...

    Authors: Cleidson R. B. de Souza, Jean M. R. Costa and Marcelo Cataldo
    Citation: Journal of the Brazilian Computer Society 2012 18:67
    Content type: Original Paper Published on:

  24. In some classification tasks, such as those related to the automatic building and maintenance of text corpora, it is expensive to obtain labeled instances to train a classifier. In such circumstances it is com...

    Authors: Nuno Filipe Escudeiro and Alípio Mário Jorge
    Citation: Journal of the Brazilian Computer Society 2012 18:69
    Content type: WTI Published on:

  26. Traditional media such as magazines and newspapers are undergoing deep transformations as they cope with the high volume and dynamicity of currently available information. In addition, with the emergence of de...

    Authors: Ricardo Piccoli, João Oliveira and Isabel Manssour
    Citation: Journal of the Brazilian Computer Society 2012 18:66
    Content type: Original Paper Published on:

  27. This paper considers the estimation of reliability and availability of intrusion-tolerant systems subject to non-detectable intrusions caused by stealth attacks. We observe that typical intrusion tolerance tec...

    Authors: Luís Teixeira d’Aguiar Norton Brandão and Alysson Neves Bessani
    Citation: Journal of the Brazilian Computer Society 2012 18:62
    Content type: LADC 2011 Published on:

    The Erratum to this article has been published in Journal of the Brazilian Computer Society 2012 18:s13173-012-0074-6

  28. We present and evaluate a neural network-based technique to automatically enable NPR renderings from digital face images, which resemble semi-detailed sketches. The technique has been experimentally evaluated ...

    Authors: Francisco de Assis Pereira Vasconcelos de Arruda, José Eustáquio Rangel de Queiroz and Herman Martins Gomes
    Citation: Journal of the Brazilian Computer Society 2012 18:61
    Content type: Original Paper Published on:

  29. The graph sandwich problem for property Π is defined as follows: Given two graphs G1=(V,E1) and G2=(V,E2) such that E1⊆E2, is there a graph G=(V,E) such that E1⊆E⊆E2 which satisfies property Π? We propose to stud...

    Authors: Olivier Durand de Gevigney, Sulamita Klein, Viet-Hang Nguyen and Zoltán Szigeti
    Citation: Journal of the Brazilian Computer Society 2012 18:65
    Content type: SI: GraphCliques Published on:

  30. There are various definitions of a gene cluster determined by two genomes and methods for finding these clusters. However, there is little work on characterizing configurations of genes that are eligible to be...

    Authors: Vítor Costa, Simone Dantas, David Sankoff and Ximing Xu
    Citation: Journal of the Brazilian Computer Society 2012 18:64
    Content type: SI: GraphCliques Published on:

  31. A b-coloring of a graph is a coloring of its vertices such that every color class contains a vertex that has a neighbor in all other classes. The b-chromatic number of a graph is the largest integer k such that t...

    Authors: Victor Campos, Victor A. E. de Farias and Ana Silva
    Citation: Journal of the Brazilian Computer Society 2012 18:63
    Content type: Original Paper Published on:

  33. Sensor nodes in Wireless Sensor Networks (WSNs) are prone to failures due to the fragile hardware, malicious attacks, or hostile or harsh environment. In order to assure reliable, long-term monitoring of the phen...

    Authors: Andréa Weber, Alexander Robert Kutzke and Stefano Chessa
    Citation: Journal of the Brazilian Computer Society 2012 18:57
    Content type: LADC 2011 Published on:

  34. Replication is a well-established approach to increasing database availability. Many database replication protocols have been proposed for the crash-stop failure model, in which servers fail silently. Fewer da...

    Authors: Fernando Pedone and Nicolas Schiper
    Citation: Journal of the Brazilian Computer Society 2012 18:60
    Content type: LADC 2011 Published on:

  35. The Service Component Architecture (SCA) makes it possible to combine existing and new services based on a variety of technologies with components built using a component-based development approach. However, w...

    Authors: Fernando Castor, Douglas Siqueira Leite and Cecília Mary F. Rubira
    Citation: Journal of the Brazilian Computer Society 2012 18:59
    Content type: LADC 2011 Published on:

  37. Tagging-based systems are a popular and convenient way to organize information on the Web. Despite the alleged advantage of the free choice of words used to categorize Web resources in this kind of systems, it...

    Authors: Sérgio R. P. da Silva, Marcelo R. Borth, Josiane M. P. Ferreira and Valéria D. Feltrim
    Citation: Journal of the Brazilian Computer Society 2012 18:55
    Content type: WTI Published on:

  39. The user generated content available in online communities is easy to create and consume. Lately, it also became strategically important to companies interested in obtaining population feedback on products, me...

    Authors: Carolina Bigonha, Thiago N. C. Cardoso, Mirella M. Moro, Marcos A. Gonçalves and Virgílio A. F. Almeida
    Citation: Journal of the Brazilian Computer Society 2011 18:51
    Content type: WEBMEDIA 2010 Published on:

  41. Let G=(V,E) be a graph with n vertices. A clique-colouring of a graph is a colouring of its vertices such that no maximal clique of size at least two is monocoloured. A k-clique-colouring is a clique-colouring th...

    Authors: Sulamita Klein and Aurora Morgana
    Citation: Journal of the Brazilian Computer Society 2011 18:53
    Content type: SI: GraphCliques Published on:

  42. Packages are re-usable components for most of object-oriented systems. To promote reuse in object-oriented systems and to make deployment and maintenance tasks easy, packages in object-oriented systems must be...

    Authors: Varun Gupta and Jitender Kumar Chhabra
    Citation: Journal of the Brazilian Computer Society 2011 18:52
    Content type: Original Paper Published on:

  44. The interval count problem determines the smallest number of interval lengths needed in order to represent an interval model of a given interval graph or interval order. Despite the large number of studies about ...

    Authors: Márcia R. Cerioli, Fabiano de S. Oliveira and Jayme L. Szwarcfiter
    Citation: Journal of the Brazilian Computer Society 2011 18:47
    Content type: SI: GraphCliques Published on:

  46. The Classification Problem is the problem of deciding whether a simple graph has chromatic index equal to Δ or Δ+1. In the first case, the graphs are called Class 1, otherwise, they are Class 2. A split graph is ...

    Authors: Sheila Morais de Almeida, Célia Picinin de Mello and Aurora Morgana
    Citation: Journal of the Brazilian Computer Society 2011 18:46
    Content type: SI: GraphCliques Published on:

  47. Authors: Maria Cristina Ferreira de Oliveira
    Citation: Journal of the Brazilian Computer Society 2011 17:45
    Content type: Editorial Published on:

  48. The volume of spatial information on the Web grows daily, both in the form of online maps and as references to places embedded in documents and pages. Considering the spatial information needs of users, it is ...

    Authors: Ivre Marjorie R. Machado, Rafael Odon de Alencar, Roberto de Oliveira Campos Jr. and Clodoveu A. Davis Jr.
    Citation: Journal of the Brazilian Computer Society 2011 17:44
    Content type: Original Paper Published on:

  49. Collaboration networks are social networks in which relationships represent some kind of professional collaboration. The study of collaboration networks can help identify individuals or groups that are importa...

    Authors: Vinícius P. Freire and Daniel R. Figueiredo
    Citation: Journal of the Brazilian Computer Society 2011 17:41
    Content type: Original Paper Published on: