Computing Systems Engineering
Mostrando 13-24 de 28 artigos, teses e dissertações.
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13. Adaptability, reusability and variability in software systems for space on-board computing.
Software industry is currently moving towards automation of business processes and applications increasing architectural complexity and the dynamics of requirements change. This work proposes a novel software development process, called SPAREv that includes all todays critical innovations on four areas: Model-Driven Development (MDD); Systematic Reuse; Devel
Publicado em: 2008
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14. Um modelo de interface extensível para sistemas de mineração de dados por regras de associação
Currently, one of the main challenges of computing is the huge volume of data due to the storage facility and increasing use of technology in different contexts. The analysis of this data provides support for decisions in distinct areas. However, without efficient computational techniques it becomes unfeasible to analyze this large volume of data. Thus, data
Publicado em: 2008
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15. Celine: um modelo para utilização e adaptação de conteúdo scorm em ambientes inteligentes de aprendizagem
The effort to maintain contents in ILE (Intelligent Learning Environments) was the inspiration behind the development of this work. It was observed that the contents to be taught are heavily reliant on these environments, which makes their sharing with other systems difficult. In addition, these materials are created with internal tools, which offer few reso
Publicado em: 2008
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16. O efeito Casimir dinâmico e decoerência
In this thesis we first demonstrate that the inevitable action of the environment can be substantially weakened when considering appropriate nonstationary quantum systems. Beyond protecting quantum states against decoherence, an oscillating frequency can be engineered to make the system-reservoir coupling almost negligible. Differently from the program for e
Publicado em: 2008
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17. Software maintenance: typical problems and guidelines for a specific discipline / Manutenção de Software: problemas típicos e diretrizes para uma disciplina específica
The increasing volume of software being used in all types of organizations has been calling attention for a phase of the software life cycle, until now considered in a secondary way, the software maintenance. Since it is generally not possible to replace all software products used in an organization by others based on more recent technologies, the maintenanc
Publicado em: 2007
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18. Uma agenda de intervenção para a ergonomia da atividade na concepção de sistemas computacionais interativos. / An agenda for the intervention of activity ergonomics in the conception of interactive computing systems.
An agenda for the intervention of the activity ergonomics in the requirements process of interactive computing systems centered in the user is proposed. The agenda adopted a multidiscplinary approach aimed by international software quality standarts, as ISO 13407. The objective of the agenda is to integrate the Ergonomic Analysis of Work in the requirements
Publicado em: 2006
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19. Security in grid computing / Segurança em grades computacionais
Grid computing is a concept that exploits the power of computer networks, with the specific aim of making virtual layers available that allow users to have access to highly demanding applications, as well as to adhere to large scale, highly diverse, virtual communities. Grid computing provides support for the execution of parallel applications, grouping toge
Publicado em: 2006
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20. Engenharia de trafego multi-camada para grades / Multi-layer traffic engineering for grid networks
Grids are dynamic and heterogeneous computing environments which require systematic methods for minimizing the execution time of applications. Such methods needs to detect changes on resource availability so that the execution time of applications can be kept low. The method introduced in this dissertation considers changes on the availability of hosts as we
Publicado em: 2006
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21. Caracterização de Desempenho de uma Aplicação Paralela do Método dos Elementos Finitos em Ambientes Heterogêneos de PCs
There are many complex problems of extremely difficult solutions in engineering area. These complex problems are usually impossible to be resolved for analytic methods and then they demand numeric solutions. The Finite Elements Method (FEM) is an approach for the solution of these problems found in analysis of structures, fluids, electromagnetism, assembling
Publicado em: 2006
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22. Applications of bioinspired computing in bioinformatics : analyzing the role of genes and their interactions / Aplicações de computação bioinspirada em bioinformatica : investigando o papel dos genes e suas interações
This dissertation deals with genetic networks, the mechanism of control of gene activity in cells, under three different computational perspectives. Initially, as an engineering approach, a computational tool for inference of genetic networks is proposed, which is able to recover the static structure of these networks from experimental datasets. This systems
Publicado em: 2006
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23. Detecção de movimento de objetos em tempo real utilizando dispositivos de lógica programável complexa / Real time detection of moving objects using programmable logic devices
A system that performs movement detection in a sequence of images looks for signs that confirm the occurrence of the movement in the controlled environment. Once the movement of the object is detected it is possible to perform the tracking of the object. Real time object detection and tracking techniques are of great interests to researchers and industries b
Publicado em: 2006
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24. Estudos de um método para cálculo de ganhos da malha de controle de atitude de um lançador de satélites / Analytical method for computing the controller gains of a satellite launcher
In this work, the VLS (Satellite Launcher Vehicle) control gains are calculated applying a frozen poles technique for each 1-second interval, allowing that a linear time invariant analysis to be executed inside each time interval during all flight phases. The system control architecture is proportional-integral with derivative feedback, making the 3 gains (p
Publicado em: 2004