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International Conference on Software engineering (ICSE)

作者： Claudia Susie C. Rodrigues System Engineering and Computer Science (COPPE/PESC) Federal University of Rio de Janeiro (UFRJ) Rio de Janeiro Rio de Janeiro Brazil

This paper aims to present an approach entitled VisAr3D to support software architecture teaching by means of virtual and augmented reality. Thus, it intends to define a 3D visualization environment which includes exploration, interaction and simulation resources to establish a practical and attractive learning, focusing on large scale systems.

关键词： Software architecture computer architecture Three dimensional displays Software Training

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A Study on the Application of the PREViA Approach in Modeling Education

A Study on the Application of the PREViA Approach in Modelin...

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computer science Society (SCCC) International Conference Chilean FLAGGED

作者： Marcelo Schots Claudia Susie C. Rodrigues Claudia Werner Leonardo Murta System Engineering and Computer Science COPPE/UFRJ Rio de Janeiro Brazil Instituto de Computação Universidade Federal Fluminense Rio de Janeiro Brazil

Creation, interpretation, and evolution of models and diagrams are activities commonly performed in software projects, and the teaching of such activities is fundamental for software engineering education. However, it is difficult to see the changes made in model corrections, evolutions, or maintenance done by the student, as well as by the teacher, comparing templates and different solutions. In this regard, this paper presents the use of the PREViA approach, which aims at visualizing software architecture models. This work focuses on supporting teaching and learning in the modeling education context. A feasibility study was conducted and its results provided positive evidences of the use of the approach in the correction of diagrams.

关键词： Unified modeling language Education Software computer architecture Context Software architecture Measurement

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Dynamic screen division for load balancing the raycasting of irregular data

Dynamic screen division for load balancing the raycasting of...

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IEEE International Conference on Cluster Computing

作者： Bernardo B. Labronici Cristiana Bentest Lucia Maria A. Drummond Ricardo Farias Computer Science Department Federal Fluminense University Niterói RJ Brazil Department of System Engineering State University of Rio de Janeiro Rio de Janeiro RJ Brazil System Engineering and Computer Science Program-COPPE Centro de Tecnologia Rio de Janeiro RJ Brazil

Parallel rendering algorithms usually suffer from high load imbalance during execution, due to the irregular nature of the datasets. In this paper, we propose a new load balancing scheme for tile-based parallel rendering that includes strategies for load estimation, tile decomposition and tile assignment. The load estimation strategy computes the rendering cost for each pixel, and uses it as a prediction for the next frame. The tile decomposition strategy adaptively divides the screen into tiles based on the computed costs, until an evenly tile partition is achieved. The tile assignment strategy distributes the tiles among rendering processors, based on a 2-optimal scheduling. Experimental results show that our scheme achieves significant performance gains by reducing the load imbalance when compared to the traditional tile subdivision and static random distribution schemes.

关键词： Load management Tiles Rendering (computer graphics) Concurrent computing Parallel processing computer science Costs Data visualization Data engineering systems engineering and theory

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A roadmap to the Collaboration Maturity Model (CollabMM) evolution

A roadmap to the Collaboration Maturity Model (CollabMM) evo...

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International Conference on computer Supported Cooperative Work in Design

作者： Andréa Magalhães Magdaleno Renata Mendes de Araujo Cláudia Maria Lima Werner System Engineering and Computer Science Program-COPPE NP2Tec-Research and Practice Group in Information Technology UFRJ Rio de Janeiro Rio de Janeiro Brazil System Engineering and Computer Group in Information Technology Rio de Janeiro RJ Brazil PPGI - Graduate Program in Informatics - UNIRIO NP2Tec - Research and Practice Group in Information Technology Rio de Janeiro RJ Brazil System Engineering and Computer Science Program-COPPE UFRJ Rio de Janeiro Rio de Janeiro Brazil System Engineering and Computer Science Program - COPPEIUFRJ Rio de Janeiro RJ Brazil

Organizations have been relying on collaboration for productivity improvement and knowledge sharing. The first step to foster collaboration in organizations is to make it explicit. With this aim, the Collaboration Maturity Model (CollabMM) was proposed and evaluated. The lessons learned during model applications in previous work pointed out the need to review both the model and its evaluation instruments. A literature review also showed some improvement opportunities. Therefore, the objective of this work is to develop a roadmap to highlight the main opportunities of evolution in CollabMM. These opportunities will compose our research agenda in this topic and guide future work.

关键词： Collaboration Organizations Instruments Coordinate measuring machines Capability maturity model Knowledge management

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Variability modeling in a Component-based Domain engineering Process

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9th International Conference on Software Reuse, ICSR 2006

作者： Blois, Ana Paula Terra Bacelo De Oliveira, Regiane Felipe Maia, Natanael Werner, Cláudia Becker, Karin Federal University of Rio de Janeiro COPPE/UFRJ System Engineering and Computer Science Program P.O. Box 68511 21945-970 - Rio de Janeiro - RJ Brazil PUCRS Catholic University of Rio Grande do Sul Prédio 30 - Bloco 4 90619-900 - Porto Alegre - RS Brazil

ISBN: (纸本)3540346066

Domain engineering (DE) and Component-based Development (CBD) are approaches that focus on reuse. On the one hand, DE methods emphasize variability modeling in analysis phase. On the other hand, most CBD methods gude on the development of components, with a minor focus on reusability properties. This paper presents an approach to support variability modeling, in a Component-based Domain engineering Process. © Springer-Verlag Berlin Heidelberg 2006.

关键词： Software engineering

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Software Ecosystems: Trends and Impacts on Software engineering

Software Ecosystems: Trends and Impacts on Software Engineer...

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Brazilian Symposium on Software engineering (SBES)

作者： Rodrigo Santos Cl'udia Werner Olavo Barbosa Carina Alves Computer Science and System Engineering Department COPPE Federal University of Rio de Janeiro Rio de Janeiro Brazil Center of Informatics CIn Federal University of Pernambuco (UFPE) Recife Brazil

Economic and social issues are pointed out as Software engineering (SE) challenges for the next years, since the field needs to treat issues beyond the technical side. These challenges require analyzing the field of SE from another perspective. In this sense, the study of software ecosystems (SECOs) is an emerging discipline that investigates the relationships among companies in the software industry. Companies work cooperatively and competitively in order to achieve their strategic objectives. They must engage in a new perspective, now also including third parties motivations and movements in the ecosystem, besides their own business viewpoint. Inspired on properties of natural and business ecosystems, SECO covers technical and business aspects of software development as well as partnership among companies. In this paper, we undertake a review on SECOs status as an emerging research topic in SE community. We map what is currently known about SECOs and also analyze them in a three-dimensional perspective in SE, i.e., technical, business and social. We observed that SECOs research is concentrated in eight main areas in which the most relevant ones are open source software, ecosystem modeling, and business issues. This paper also contributes to summarize the body of knowledge and presents a research agenda in SECOs.

关键词： Software Ecosystems Communities Companies Educational institutions

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On the Selection of Concurrency Control Policies for Configuration Management

On the Selection of Concurrency Control Policies for Configu...

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Brazilian Symposium on Software engineering, SBES

作者： João Gustavo Prudêncio Leonardo Murta Cláudia Werner COPPE System Engineering and Computer Science Federal University of Rio de Janeiro Rio de Janeiro Brazil Instituto de Computação Universidade Federal Fluminense Rio de Janeiro Brazil

Currently, the number of developers involved in a software development project is increasing because of the need to deliver systems with higher complexity and quality and to reduce time-to-market. In order to have the software development process executing in an organized way, we must provide mechanisms to control concurrent access over the project artifacts. These mechanisms are implemented by concurrency control policies in version control systems, which may allow (optimistic policy) or inhibit (pessimistic policy) parallel development. This work presents the Orion approach, which analyzes the project historical changes and selects the most appropriate concurrency control policy for each software element. In addition, it identifies critical elements, which are candidates to refactoring. This selection aims at minimizing conflict situations, and thus improving the development team productivity. A prototype was built to enable the application of the proposed approach and two experimental studies were performed as a preliminary evaluation.

关键词： Concurrency control Control systems Programming Productivity Software development management computer science Time to market Prototypes Collaborative software Software engineering

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Software ecosystems governance to enable IT architecture based on software asset management

Software ecosystems governance to enable IT architecture bas...

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Inaugural IEEE-IES Digital Ecosystems and Technologies Conference, DEST

作者： Benno E. Albert Rodrigo P. dos Santos Cláudia M. L. Werner Technological Architecture Information Technology & Telecommunications Petrobras Rio de Janeiro Brazil System Engineering and Computer Science Department COPPE Federal University of Rio de Janeiro Rio de Janeiro Brazil

Information Technology (IT) supports companies' business processes and decision making through the use of technologies and tools that are provided by suppliers. Companies that are suppliers and consumers establish relationships through contracts of purchasing products and consulting, for example. These relationships, i.e., the companies involved and the information exchanged between the parties are considered elements of Software Ecosystems (SECOs). All of these elements can be considered SECO assets and need to be supported via SECO governance since their organization and evolution represent an IT Architecture. So, IT companies or their IT divisions can use the ISO/IEC 19770 standard for Software Asset Management (SAM) in order to control costs and optimize software investments. In this sense, this paper describes a SECO Governance approach for enabling an IT Architecture based on SAM.

关键词： Software Companies computer architecture Standards Ecosystems

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Balancing collaboration and discipline in software development processes

Balancing collaboration and discipline in software developme...

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International Conference on Software engineering (ICSE)

作者： Andrea Magalhaes Magdaleno NP2Tec-Research and Practice Group in Information Technology UNIRIO Brazil COPPE/PESC-System Engineering and Computer Science Program UFRJ Rio de Janeiro Rio de Janeiro Brazil

Neither traditional, agile or free/open software development models can be effective to all projects contexts. We claim that collaboration and discipline can be the driver to tailor software development processes to meet projects and organizations needs. This work proposes that process tailoring can be conducted through a context management approach.

关键词： Context Collaboration Programming Software Social network services Organizations Context modeling

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Alternatives for testing of context-aware contemporary software systems in industrial settings: Results from a rapid review

arXiv

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arXiv 2021年

作者： Matalonga, Santiago Amalfitano, Domenico Doreste, Andrea Fasolino, Anna Rita Travassos, Guilherme H. School of Computing Engineering and Physical Science ALMADA Research Centre University of the West of Scotland Paisley Renfrewshire United Kingdom Department of Electrical Engineering and Information Technology DIETI University of Naples Federico II Naples Italy System Engineering and Computer Science COPPE Federal University of Rio de Janeiro Rio de Janeiro Brazil

Context: Context-aware contemporary software systems (CACSS) are mainstream. Furthermore, they present challenges for current engineering practices. These challenges are distinctively present when testing CACSS, as the variation of context deepens the limitations of available software testing practices and technologies. Objective: To understand how the industry deals with the variation of context when testing CACSS. Method: A Rapid Review was commissioned to uncover the necessary evidence to achieve the objectives. Results: Our results show that current research initiatives aim to generate or improve Test Suites that can deal with the variation of context and the sheer volume of test input possibilities. To achieve this, they mostly rely on modeling the systems' dynamic behavior and increasing computing resources to generate test inputs. We found no evidence of research results aiming at managing context variation through the testing lifecycle process. Conclusions: We discuss how the identified solutions are not ready for mainstream adoption. They are all domain-specific, and while the ideas and approaches can be reproduced in different settings, the technologies noon to be re-engineered and tailor to the specific CACSS. © 2021, CC BY-NC-SA.

关键词： Software testing

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