https://repositorio.ufba.br/handle/ri/34150 2026-05-03T10:27:09Z 2026-05-03T10:27:09Z Araújo, Francisco Renato Cavalcante Sampaio, Leobino Nascimento https://repositorio.ufba.br/handle/ri/43981 2026-02-04T12:20:23Z 2025-05-19T00:00:00Z

Título: Provisionamento de QoS em NDN através da diferenciação de serviços e gerenciamento de cache. Autor(es): Araújo, Francisco Renato Cavalcante; Sampaio, Leobino Nascimento Abstract: Named Data Networks (NDN) decouple data from its location through exclusive naming and operate on a best-effort model, limiting support for applications that require Quality of Service (QoS). The NDN cache expands manageable resources, but traditional cache policies do not meet QoS requirements. This work presents the DSPPC policy, which considers data popularity and its service class in cache management, along with a QoS encoding mechanism in packet names. Simulations demonstrate that the DSPPC proposal keeps priority data in the cache without compromising less-prioritized data, compared to the evaluated cache policies. Editora / Evento / Instituição: Sociedade Brasileira de Computação Tipo: Artigo de Evento

2025-05-19T00:00:00Z Silva, Fernanda Gomes Santos, Paulo Ezequiel Dias Chavez, Christina von Flach Garcia https://repositorio.ufba.br/handle/ri/39382 2024-05-24T17:35:35Z 2023-01-30T00:00:00Z

Título: OSS in software engineering education: mapping characteristics of brazilian instructors Autor(es): Silva, Fernanda Gomes; Santos, Paulo Ezequiel Dias; Chavez, Christina von Flach Garcia Abstract: Software Engineering is a crucial topic in undergraduate computing­related courses and provides the basic knowledge and skills necessary for professional practice in the software industry. Teaching Software Engi­ neering principles, concepts, and practices and relating them to real­world scenarios are challenging tasks, and the adoption of Open Source Software (OSS) projects can help to face these challenges. On the other hand, adopting OSS projects as a didactic resource may introduce additional challenges to instructors who are not familiar with the OSS ecosystem. Objective: In this paper, we identified and mapped the profiles of instructors of Software Engineering courses concerning their classroom practices and use of OSS projects in Software Engineering Edu­ cation. Method: We surveyed 90 higher education instructors in Brazil to collect data regarding their familiarity with the Software Engineering knowledge areas, pedagogical methods and resources used, and familiarity with and use of OSS projects in the classroom. Then, we resorted to data mining techniques, for instance, K­modes and Decision Tree algorithms, to identify instructors’ characteristics according to their classroom practices and use of OSS projects in the course activities. Results: Our findings include the characterization of instructors who use and instructors that do not use OSS projects in Software Engineering Education and the grouping of instructors after the application of the K­modes algorithm, and after the application of the Decision Tree algorithm, with similar characteristics of the pedagogical practices. The main result of this work is that the familiarity with OSS projects and the use of active learning methods were characteristics present in the application of the K­modes and Decision Tree algorithms, that distinguished instructors who used OSS projects from those that did not use them in Software Engineering Education. Finally, we confirmed that familiarity with OSS projects could have a positive influence on the instructors’ interest and potential for adopting this approach in Software Engineering Education. Editora / Evento / Instituição: Sociedade Brasileira de Computação Tipo: Artigo de Periódico

2023-01-30T00:00:00Z Araújo, Francisco Renato Cavalcante Madureira, André Luiz Romano Sampaio, Leobino Nascimento https://repositorio.ufba.br/handle/ri/36954 2023-05-06T05:04:01Z 2021-08-16T00:00:00Z

Título: Balanceamento de carga dinâmico, distribuído e centrado no conteúdo para Redes de Dados Nomeados Autor(es): Araújo, Francisco Renato Cavalcante; Madureira, André Luiz Romano; Sampaio, Leobino Nascimento Abstract: In Named Data Networks (NDN), the name-based routing model predominantly benefits applications characterized by static content (i.e., content). Traditional NDN in-network caching is not suitable for dynamic content (i.e., services) as services are generated on demand. Furthermore, each service is also exclusive to each consumer, which lessens NDN in-network caching benefits. Conventional NDN routing strategies are also inadequate for an even service Interest distribution among the available replicas. In such scenarios, load balancing mechanisms can achieve better network utilization by maintaining workload balance among service providers' replicas. This work presents a load balancing strategy, called B3C, in which each router makes balancing decisions individually, considering their local information and without injecting control traffic. Simulation results show that B3C can evenly balance the load between the replicas and the traffic between the routes. Editora / Evento / Instituição: Universidade Federal da Bahia Tipo: Artigo de Evento

2021-08-16T00:00:00Z Nascimento, Debora Maria Coelho Bittencourt, Roberto Almeida Chavez, Christina von Flach Garcia https://repositorio.ufba.br/handle/ri/32477 2022-10-24T20:08:57Z 2015-01-01T00:00:00Z

Título: Open source projects in software engineering education: a mapping study Autor(es): Nascimento, Debora Maria Coelho; Bittencourt, Roberto Almeida; Chavez, Christina von Flach Garcia Abstract: Context: It is common practice in academia to have students work with “toy” projects in software engineering (SE) courses. One way to make such courses more realistic and reduce the gap between academic courses and industry needs is getting students involved in open source projects (OSP) with faculty supervision. Objective: This study aims to summarize the literature on how OSP have been used to facilitate students’ learning of SE. Method: A systematic mapping study was undertaken by identifying, filtering and classifying primary studies using a predefined strategy. Results: 72 papers were selected and classified. The main results were: (a) most studies focused on comprehensive SE courses, although some dealt with specific areas; (b) the most prevalent approach was the traditional project method; (c) studies’ general goals were: learning SE concepts and principles by using OSP, learning open source software or both; (d) most studies tried out ideas in regular courses within the curriculum; (e) in general, students had to work with predefined projects; (f) there was a balance between approaches where instructors had either inside control or no control on the activities performed by students; (g) when learning was assessed, software artefacts, reports and presentations were the main instruments used by teachers, while surveys were widely used for students’ self-assessment; (h) most studies were published in the last seven years. Conclusions: The resulting map gives an overview of the existing initiatives in this context and shows gaps where further research can be pursued. Editora / Evento / Instituição: Taylor and Francis Online Tipo: Artigo de Periódico

2015-01-01T00:00:00Z