João Carlos N Bittencourt | Universidade Federal do Recôncavo da Bahia (original) (raw)
Uploads
Papers by João Carlos N Bittencourt
Camera-enabled sensors deployed for visual monitoring will cover a region of the target field, pr... more Camera-enabled sensors deployed for visual monitoring will cover a region of the target field, providing information for many innovative applications based on wireless sensing. Actually, some areas of the monitored field may have more relevance than others, according to the characteristics of the applications, which may indicate that such areas need better coverage to avoid blind spots and achieve higher visual redundancy. In order to provide a metric to assess how well relevant areas are being covered, this paper proposes an availability metric which associates coverage to the relevance of areas, which may be useful when assessing monitoring availability. Moreover, a greedy algorithm is also proposed to compute sensing orientations for all visual sensors, aiming at the enhancement of visual coverage over the most relevant areas. With such proposals, it is possible to initially address the particular problem of visual coverage over areas with different relevances, providing practica...
Resumo: O PBL (Problem Based Learning) é uma metodologia onde os alunos deixam de ser entidades p... more Resumo: O PBL (Problem Based Learning) é uma metodologia onde os alunos deixam de ser entidades passivas na sua formação, para se tornarem elementos ativos ao longo do processo de aprendizado. Ao contrário das metodologias tradicionais, no PBL o problema antecede o conteúdo e passa a ser o elemento de incentivo para os estudantes. Graças a isso o problema torna-se o principal instrumento para o sucesso da metodologia e vem sendo alvo de estudos que buscam melhorar o seu processo de construção. Desde 2003, o curso de Engenharia de Computação da Universidade Estadual de Feira de Santana (UEFS) utiliza esta metodologia por meio dos chamados Estudos Integrados Temáticos (EI). Este artigo apresenta as características da metodologia e um modelo de aplicação do PBL no ensino de Arquitetura de Computadores, baseado no EI de Sistemas Digitais na UEFS. A finalidade deste trabalho é analisar os problemas sob a óptica da Taxonomia de Bloom Revisada, demonstrando como a utilização da classificação dos níveis cognitivos pode contribuir para a gestão dos problemas. Palavras-chave: Aprendizagem Baseada em Problemas, Método de Aprendizagem, Sistemas Digitais, Taxonomia de Bloom.
Resumo: PBL (Problem Based Learning) é uma estratégia educacional centrada no aluno, cuja apresen... more Resumo: PBL (Problem Based Learning) é uma estratégia educacional centrada no aluno, cuja apresentação dos problemas antecede a exposição de conteúdos. Neste contexto, os problemas são, portanto, um dos principais elementos da PBL. Este artigo descreve o Problem Database Manager (PDM), um sistema Web desenvolvido para oferecer suporte à elaboração e compartilhamento de problemas, destacando o contexto para o seu surgimento, as características da ferramenta e por fim, é apresentada uma discussão sobre os aspectos positivos e das suas funcionalidades. Abstract: PBL (Problem Based Learning) is an educational strategy focused on the students, where the problems are presented before the exposure of contents. On the PBL, the problems are presented before the content presentation. Problems are a one of the principal PBL component. This article describes the Problem Database Manager (PDM), a Web system designed to support the development and sharing of problems, highlighting the presents context for its emergence, the characteristics of the tool and finally, it present a discussion on the positive aspects and its features.
Searching for new process models which satisfy the embedded systems demands, has been reflected i... more Searching for new process models which satisfy the embedded systems demands, has been reflected in efforts to develop reusable IP-cores based on the Rational Unified Process (RUP). Among the alternative process, highlight the ipPROCESS, a Brazilian initiative in order to create a standard and enhance the development of integrated circuit design in the country. In this context, this paper presents an application of ipPROCESS designing a set of IP-cores for FPGA game projects. The design is based on a car racing game to support the construction of IP-cores considered essential for game project, such as control, handling and visualization.
This paper presents a comparative study about the performance of the SGA using five classic bench... more This paper presents a comparative study about the performance of the SGA using five classic benchmarking functions. The performance analysis is accomplished for the six combination of the operators of selection and recombination with the control parameters having been fixed: size of population, recombination and mutation rates. The overall behavior of the SGA is evaluated by the fitness, of the best individual, analyzed during the evolution and to the ending of the same one. The obtained results shown that the SGA can be effective and competitive to search and optimization, considering an optimal combination of the usual operators, that can be applied to different behavior of the performance surfaces.
Este trabalho descreve a aplicação de uma metodologia de um novo modelo de portal voltado à promo... more Este trabalho descreve a aplicação de uma metodologia de um novo modelo de portal voltado à promoção da ciência e tecnologia por meio de um processo de desenvolvimento de um sistema computacional, baseado em ferramentas e sistemas operacionais livres, novas tecnologias Web e estruturado segundo os conceitos de desenvolvimento de portais corporativos. Este novo modelo de portal é denominado Meta Portal, de caráter interdisciplinar e promotor do desenvolvimento colaborativo, com a participação da comunidade como agente ativo na construção do sistema e na disponibilização dos conteúdos. O projeto vem sendo aplicado no município de Lençóis-BA, na região da Chapada Diamantina, a partir da implantação de um sistema de gerenciamento de conteúdo,
proporcionando a inserção sistemática de conteúdos acerca da região.
PBL (Problem Based Learning) is an educational strategy focused on the students. On the PBL, the ... more PBL (Problem Based Learning) is an educational strategy focused on the students. On the PBL, the problems are presented before the content presentation. Problems are a one of the principal PBL component. This article describes PBL Manager, a web system designed to support the development and sharing of problems. It presents the context for the emergence of the PBL Manager and tool characteristics. Finally, a discussion of the positive aspects and the PBL Manager evolution are considered.
A busca crescente por alternativas para aumentar o desempenho de operadores aritméticos implement... more A busca crescente por alternativas para aumentar o desempenho de operadores aritméticos implementados em hardware torna cada vez mais importante a análise dos custos destas implementações em termos de desempenho e consumo de recursos físicos. Este artigo apresenta os resultados do desenvolvimento dos somadores Ripple Carry, Carry Select, Carry Look-ahead e o Macro Function. Essa análise foi realizada com base no projeto de uma unidade de ponto flutuante sintetizada em uma FPGA, de acordo com o padrão IEEE 754-2008, para precisão simples e meia precisão simples.
This article describes a project that aims to develop the one action focused to promote the scien... more This article describes a project that aims to develop the one action focused to promote the science and technology in the region of the Chapada Diamantina. Due to various methodological possibilities and mechanisms for promotion of the science and technology, took up the process of developing a computer system based on free tools and operating systems, using new technologies for the Web allied to the concept of corporate portals in order to development a new model of portal, with the implementation of the database that storage relevant data and information covering various aspects of the region. The project has interdisciplinary feature and seeks to promote the collaborative development, since it adds a great number of information for different persons or groups. In addition, will work directly with the local community through’s of the training process to act with the project team, thus promoting access to computer resources and new technologies.
fejal.com.br
Based on experiences applying during the implementation of Software Engineering Integrated Study ... more Based on experiences applying during the implementation of Software Engineering Integrated Study using the PBL methodology, this paper presents a description of it's application, a case study comprises the description of the problem, tutorial group formation, development methodology, valuation and learning outcomes. Finally a discussion of the experience of PBL implementation in the discipline from an analysis performed by students who experienced it.
cesmac.com.br
This article describes the methodology of design of an new portal model focused on promoting scie... more This article describes the methodology of design of an new portal model focused on promoting science and technology by developing a computer system, based on free tools and operating systems, Web technologies and structured according the concepts of development of enterprise portals. This new type of portal is called Meta Portal, with interdisciplinary caracter and collaborative development promoter, with community participation as an active agent in the construction of the system and the availability of contents.
sbgames.org
This paper describes a racing game implementation using reconfigurable circuits in FPGA. The mode... more This paper describes a racing game implementation using reconfigurable circuits in FPGA. The model uses as output interface the VGA monitors and manual controls using push-buttons. That guarantees a better debugging of developed circuits in FPGA, increasing its potentiality and interactivity with users. The differential of this project can be defined by the use of an integrated circuit of low cost, easy maintenance and programmed in Verilog hardware description language. This project is divided in two parts, first will be presented an approach about the content of the circuit and finally described the main parts of the developed model.
Thesis Chapters by João Carlos N Bittencourt
À minha amada e eterna companheira, Claudia Asevedo Mattos Bittencourt, por estar sempre presente... more À minha amada e eterna companheira, Claudia Asevedo Mattos Bittencourt, por estar sempre presente nos momentos mais importantes da minha vida.
Camera-enabled sensors deployed for visual monitoring will cover a region of the target field, pr... more Camera-enabled sensors deployed for visual monitoring will cover a region of the target field, providing information for many innovative applications based on wireless sensing. Actually, some areas of the monitored field may have more relevance than others, according to the characteristics of the applications, which may indicate that such areas need better coverage to avoid blind spots and achieve higher visual redundancy. In order to provide a metric to assess how well relevant areas are being covered, this paper proposes an availability metric which associates coverage to the relevance of areas, which may be useful when assessing monitoring availability. Moreover, a greedy algorithm is also proposed to compute sensing orientations for all visual sensors, aiming at the enhancement of visual coverage over the most relevant areas. With such proposals, it is possible to initially address the particular problem of visual coverage over areas with different relevances, providing practica...
Resumo: O PBL (Problem Based Learning) é uma metodologia onde os alunos deixam de ser entidades p... more Resumo: O PBL (Problem Based Learning) é uma metodologia onde os alunos deixam de ser entidades passivas na sua formação, para se tornarem elementos ativos ao longo do processo de aprendizado. Ao contrário das metodologias tradicionais, no PBL o problema antecede o conteúdo e passa a ser o elemento de incentivo para os estudantes. Graças a isso o problema torna-se o principal instrumento para o sucesso da metodologia e vem sendo alvo de estudos que buscam melhorar o seu processo de construção. Desde 2003, o curso de Engenharia de Computação da Universidade Estadual de Feira de Santana (UEFS) utiliza esta metodologia por meio dos chamados Estudos Integrados Temáticos (EI). Este artigo apresenta as características da metodologia e um modelo de aplicação do PBL no ensino de Arquitetura de Computadores, baseado no EI de Sistemas Digitais na UEFS. A finalidade deste trabalho é analisar os problemas sob a óptica da Taxonomia de Bloom Revisada, demonstrando como a utilização da classificação dos níveis cognitivos pode contribuir para a gestão dos problemas. Palavras-chave: Aprendizagem Baseada em Problemas, Método de Aprendizagem, Sistemas Digitais, Taxonomia de Bloom.
Resumo: PBL (Problem Based Learning) é uma estratégia educacional centrada no aluno, cuja apresen... more Resumo: PBL (Problem Based Learning) é uma estratégia educacional centrada no aluno, cuja apresentação dos problemas antecede a exposição de conteúdos. Neste contexto, os problemas são, portanto, um dos principais elementos da PBL. Este artigo descreve o Problem Database Manager (PDM), um sistema Web desenvolvido para oferecer suporte à elaboração e compartilhamento de problemas, destacando o contexto para o seu surgimento, as características da ferramenta e por fim, é apresentada uma discussão sobre os aspectos positivos e das suas funcionalidades. Abstract: PBL (Problem Based Learning) is an educational strategy focused on the students, where the problems are presented before the exposure of contents. On the PBL, the problems are presented before the content presentation. Problems are a one of the principal PBL component. This article describes the Problem Database Manager (PDM), a Web system designed to support the development and sharing of problems, highlighting the presents context for its emergence, the characteristics of the tool and finally, it present a discussion on the positive aspects and its features.
Searching for new process models which satisfy the embedded systems demands, has been reflected i... more Searching for new process models which satisfy the embedded systems demands, has been reflected in efforts to develop reusable IP-cores based on the Rational Unified Process (RUP). Among the alternative process, highlight the ipPROCESS, a Brazilian initiative in order to create a standard and enhance the development of integrated circuit design in the country. In this context, this paper presents an application of ipPROCESS designing a set of IP-cores for FPGA game projects. The design is based on a car racing game to support the construction of IP-cores considered essential for game project, such as control, handling and visualization.
This paper presents a comparative study about the performance of the SGA using five classic bench... more This paper presents a comparative study about the performance of the SGA using five classic benchmarking functions. The performance analysis is accomplished for the six combination of the operators of selection and recombination with the control parameters having been fixed: size of population, recombination and mutation rates. The overall behavior of the SGA is evaluated by the fitness, of the best individual, analyzed during the evolution and to the ending of the same one. The obtained results shown that the SGA can be effective and competitive to search and optimization, considering an optimal combination of the usual operators, that can be applied to different behavior of the performance surfaces.
Este trabalho descreve a aplicação de uma metodologia de um novo modelo de portal voltado à promo... more Este trabalho descreve a aplicação de uma metodologia de um novo modelo de portal voltado à promoção da ciência e tecnologia por meio de um processo de desenvolvimento de um sistema computacional, baseado em ferramentas e sistemas operacionais livres, novas tecnologias Web e estruturado segundo os conceitos de desenvolvimento de portais corporativos. Este novo modelo de portal é denominado Meta Portal, de caráter interdisciplinar e promotor do desenvolvimento colaborativo, com a participação da comunidade como agente ativo na construção do sistema e na disponibilização dos conteúdos. O projeto vem sendo aplicado no município de Lençóis-BA, na região da Chapada Diamantina, a partir da implantação de um sistema de gerenciamento de conteúdo,
proporcionando a inserção sistemática de conteúdos acerca da região.
PBL (Problem Based Learning) is an educational strategy focused on the students. On the PBL, the ... more PBL (Problem Based Learning) is an educational strategy focused on the students. On the PBL, the problems are presented before the content presentation. Problems are a one of the principal PBL component. This article describes PBL Manager, a web system designed to support the development and sharing of problems. It presents the context for the emergence of the PBL Manager and tool characteristics. Finally, a discussion of the positive aspects and the PBL Manager evolution are considered.
A busca crescente por alternativas para aumentar o desempenho de operadores aritméticos implement... more A busca crescente por alternativas para aumentar o desempenho de operadores aritméticos implementados em hardware torna cada vez mais importante a análise dos custos destas implementações em termos de desempenho e consumo de recursos físicos. Este artigo apresenta os resultados do desenvolvimento dos somadores Ripple Carry, Carry Select, Carry Look-ahead e o Macro Function. Essa análise foi realizada com base no projeto de uma unidade de ponto flutuante sintetizada em uma FPGA, de acordo com o padrão IEEE 754-2008, para precisão simples e meia precisão simples.
This article describes a project that aims to develop the one action focused to promote the scien... more This article describes a project that aims to develop the one action focused to promote the science and technology in the region of the Chapada Diamantina. Due to various methodological possibilities and mechanisms for promotion of the science and technology, took up the process of developing a computer system based on free tools and operating systems, using new technologies for the Web allied to the concept of corporate portals in order to development a new model of portal, with the implementation of the database that storage relevant data and information covering various aspects of the region. The project has interdisciplinary feature and seeks to promote the collaborative development, since it adds a great number of information for different persons or groups. In addition, will work directly with the local community through’s of the training process to act with the project team, thus promoting access to computer resources and new technologies.
fejal.com.br
Based on experiences applying during the implementation of Software Engineering Integrated Study ... more Based on experiences applying during the implementation of Software Engineering Integrated Study using the PBL methodology, this paper presents a description of it's application, a case study comprises the description of the problem, tutorial group formation, development methodology, valuation and learning outcomes. Finally a discussion of the experience of PBL implementation in the discipline from an analysis performed by students who experienced it.
cesmac.com.br
This article describes the methodology of design of an new portal model focused on promoting scie... more This article describes the methodology of design of an new portal model focused on promoting science and technology by developing a computer system, based on free tools and operating systems, Web technologies and structured according the concepts of development of enterprise portals. This new type of portal is called Meta Portal, with interdisciplinary caracter and collaborative development promoter, with community participation as an active agent in the construction of the system and the availability of contents.
sbgames.org
This paper describes a racing game implementation using reconfigurable circuits in FPGA. The mode... more This paper describes a racing game implementation using reconfigurable circuits in FPGA. The model uses as output interface the VGA monitors and manual controls using push-buttons. That guarantees a better debugging of developed circuits in FPGA, increasing its potentiality and interactivity with users. The differential of this project can be defined by the use of an integrated circuit of low cost, easy maintenance and programmed in Verilog hardware description language. This project is divided in two parts, first will be presented an approach about the content of the circuit and finally described the main parts of the developed model.
À minha amada e eterna companheira, Claudia Asevedo Mattos Bittencourt, por estar sempre presente... more À minha amada e eterna companheira, Claudia Asevedo Mattos Bittencourt, por estar sempre presente nos momentos mais importantes da minha vida.