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An optimization-based approach to software development process tailoring

An optimization-based approach to software development proce...

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2nd International Symposium on Search Based Software engineering, SSBSE 2010

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

ISBN: (纸本)9780769541952

A major activity performed by the manager before starting a software project is tailoring its development process. Such activity requires information about the context under which the project will be executed, including organizational, project, and team characteristics. In addition, it also requires pondering many factors and evaluating all existing constraints. In this scenario, we claim that a balance between collaboration and discipline can be the drivers to tailor software development processes in order to meet project and organization needs. With the purpose of facilitating this balancing, it is possible to automate some of the steps to solve the problem, reducing the effort required to execute this task and improving the obtained process. Therefore, this work presents an optimization-based approach where the balancing in process tailoring is defined, modeled and briefly analyzed. This approach uses collaboration and discipline as utility functions to select the most appropriate process for a software development project, considering its current context. © 2010 IEEE.

关键词： Constraint satisfaction problems

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An exploratory study on collaboration understanding in software development social networks

An exploratory study on collaboration understanding in softw...

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18th International Conference on Collaboration and Technology, CRIWG 2012

作者： Magdaleno, Andréa M. Araujo, Renata M. Werner, Cláudia M. L. UFRJ - Federal University of Rio de Janeiro COPPE - Systems Engineering and Computer Science Department P.O. Box 68511 21945-970 Rio de Janeiro RJ Brazil - UNIRIO Brazil

ISBN: (纸本)9783642332838

Collaboration is important for productivity, quality, and knowledge sharing in software development. In this context, the use of social networks analysis can help to track the level of collaboration in a development project. In this work, an exploratory study was conducted, in the context of free/open source software, using EvolTrack-SocialNetwork tool, to investigate collaboration in software teams. The preliminary results indicate a potential to increase one's ability to understand the course that the collaboration is taking. © 2012 Springer-Verlag.

关键词： Social sciences computing

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Architectural elements recovery and quality evaluation to assist in reference architectures specification

Architectural elements recovery and quality evaluation to as...

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19th International Conference on Software engineering and Knowledge engineering, SEKE 2007

作者： De Vasconcelos, Aline Pires Vieira Werner, Claudia Maria Lima COPPE UFRJ Systems Engineering and Computer Science Program P.O. Box 68511 Rio de Janeiro RJ Brazil CEFET Campos Federal Center for Technological Education of Campos Dr. Siqueira 273 Campos dos Goytacazes RJ Brazil

ISBN: (纸本)9781627486613

Reference architectures are the basis for application instantiation in both Domain engineering and Product Line contexts. They are created based on domain requirements, commonalities, and variability. Considering that one of the essential sources of information in this context is the existing systems available in the domain, reverse engineering becomes a key activity to assist in reference architectures specification. Although many approaches consider reengineering existing systems to help in reusable components extraction and variability identification, they do not propose an approach, with well-defined activities and criteria, to support reference architectures specification from existing systems. In this context, this paper describes an approach to help in this task covering three macro-Activities, namely: reverse engineering focusing on architectural elements recovery;recovered architecture quality evaluation;and domain commonalities and variability identification. These activities are guided by general criteria, which can be reused across domains, and are supported by a tool set integrated to a reuse based software development environment, i.e. the Odyssey environment. The results of experimental studies conducted to evaluate the first two macro-Activities are described in this paper. Copyright © (2007) by Knowledge systems Institute (KSI).

关键词： computer software reusability

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Context-based process line

Context-based process line

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作者： Nunes, Vanessa Werner, Claudia Santoro, Flavia Maria COPPE/UFRJ Systems Engineering and Computer Science Program P.O. Box 68511 Rio de Janeiro RJ Brazil NP2Tec and Postgraduate Information Systems Program UNIRIO Av. Pasteur 458 Urca - Rio de Janeiro RJ Brazil

ISBN: (纸本)9789898425065

Complexity and dynamism of day-to-day activities in organizations are inextricably linked, one impacting the other, increasing the challenges for constant adaptation of the way to organize work to address emerging demands. In this scenario, there are a variety of information, insight and reasoning being processed between people and systems, during process execution. We argue that process variations could be decided in real time, using context information collected. This paper presents a proposal for a business process line cycle, with a set of activities encapsulated in the form of components as central artefact. We explain how composition and adaptation of work may occur in real time and discuss a scenario for this proposal.

关键词： Enterprise resource management

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Analysis and evaluation of a new MAC protocol for broadband wireless access

Analysis and evaluation of a new MAC protocol for broadband ...

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International Conference on Wireless Networks, Communications and Mobile Computing

作者： L.F.M. de Moraes P.D. Maciel Systems Engineering and Computer Science Program-COPPE/UFRJ High-Speed Networks Laboratory-RAVEL Rio de Janeiro Brazil

Broadband wireless access (BWA) systems offer a solution for broadband access and high data rate transmission of multimedia services with distinct quality-of-service (QoS) requirements through a wireless medium, IEEE 802.16 standard specifies the PHY and MAC layers for BWA systems. However, in spite of including the possibility for QoS support, the standard does not define how to schedule different types of traffic. This article propose a new MAC protocol for BWA systems that incorporates a traffic scheduling mechanism based on messages and/or stations priorities. An analytical model to evaluate the performance of the proposed protocol is also developed and results obtained for the messages waiting times of different traffic classes are presented.

关键词： Media Access Protocol Wireless application protocol Access protocols Traffic control Physical layer Proposals Quality of service Analytical models Scheduling Access control

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Porantim: An approach to support the combination and selection of Model-based Testing techniques

Porantim: An approach to support the combination and selecti...

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International Workshop on Automation of Software Test (AST)

作者： Arilo Claudio Dias Neto Guilherme Horta Travassos Systems Engineering and Computer Science Program-COPPE/UFRJ Federal University of Rio de Janeiro Rio de Janeiro Brazil

The technical literature regarding model-based testing (MBT) has several techniques with different characteristics and goals available to be applied in software projects. Besides the lack of information regarding these techniques, they could be applied together in a software project aiming at improving the testing coverage. However, this decision needs to be carefully analyzed to avoid loss of resources in a software project. Based on this scenario, this paper proposes an approach with the purpose of supporting the unique or combined selection of MBT techniques for a given software project considering two aspects: the adequacy level between MBT techniques and the software project characteristics and impact of more than one MBT technique in some testing process variables. At the end, preliminary results of an experimental evaluation are presented.

关键词： Software testing Automatic testing Software tools System testing Software quality programming Software systems Costs Context modeling systems engineering and theory

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A variable priorities MAC protocol for Broadband Wireless Access with improved channel utilization among stations

A variable priorities MAC protocol for Broadband Wireless Ac...

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International Symposium on Telecommunications

作者： L. F. M. de Moraes P. D. Maciel Systems Engineering and Computer Science Program-COPPE/UFRJ High-Speed Networks Laboratory-RAVEL Rio de Janeiro Brazil

The Broadband Wireless Access (BWA) technology has been proposed to support different traffic classes with distinct quality of service (QoS) requirements in broadband metropolitan area networks. Therefore, as part of its specifications, such a system must properly address the combined requirements of wireless communications and multimedia applications. We propose in this paper an extension to the MAC protocol presented in [1, 2], by assigning variable priorities to the network stations sharing access to the communication channel. An analytical model to evaluate the performance of the proposed protocol is also developed and results obtained for the messages waiting times at different stations are presented. In addition, simulation data are used to compare the results obtained from the analytical model presented previously. It is concluded that the proposed variable priority MAC protocol is able to improve channel utilization and provide throughput and queueing delay fairness among the stations in the network.

关键词： Media Access Protocol Wireless application protocol Access protocols Analytical models Quality of service Telecommunication traffic Traffic control Metropolitan area networks Wireless communication Multimedia communication

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Crowd and Urban Storytelling: Evaluating a Collective Intelligence Model to Support Discussions about the City 25

Crowd and Urban Storytelling: Evaluating a Collective Intell...

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25th IEEE International Conference on computer Supported Cooperative Work in Design, CSCWD 2022

作者： Chaves, Ramon Motta, Claudia Correia, Antonio Paredes, Hugo Caetano, Barbara De Souza, Jano Moreira Schneider, Daniel Postgraduate Program in Informatics PPGI/UFRJ Rio de Janeiro Brazil Federal University of Rio de Janeiro Brazil Inesc Tec University of Tr s-os-Montes e Alto Douro Utad Quinta de Prados Apartado 1013 Vila Real Portugal Systems Engineering and Computer Science Program PESC/COPPE/UFRJ Rio de Janeiro Brazil

ISBN: (纸本)9781665405270

In recent years, digital technologies have been used to support discussions about the city and also to involve citizens in participatory public processes. However, despite the widespread use of social media platforms, old issues related to engagement and participation still persist in digital initiatives. The main goal of this study is to carry out an empirical evaluation of a collective intelligence model that combines crowdsourcing and social storytelling to support discussions about the city from a bottom-up perspective. Within a design science research approach we designed a participatory action study that was carried out through a workshop with students and professionals from different areas, such as architecture, urban design and information technology. As a result, we were able to assess whether the collective intelligence model was acceptable to the participants by investigating whether the behavioral assumptions were valid and thus outlining some contributions to the field of urban informatics. © 2022 IEEE.

关键词： Crowdsourcing

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Formalizing the situation of a business process activity

Formalizing the situation of a business process activity

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International Conference on computer Supported Cooperative Work in Design

作者： Talita da Cunha Mattos Flávia Maria Santoro Kate Revoredo Vanessa Tavares Nunes Postgraduate Information Systems Program UNIRIO Rio de Janeiro Brazil COPPE/PESC-Systems Engineering and Computer Science Program UFRJ Rio de Janeiro Brazil

Business processes are dynamic and constantly evolving. Contextual elements that had not yet been identified and represented can arise and influence the execution of each process instance in diverse manners. In this scenario, the identification of these elements is considered of great importance. This paper proposes a formalism for context associated with business processes that intends to identify the situation of an activity in order to subsidize decisions to be taken within the execution of a process.

关键词： Computational modeling Context Psychology Media Navigation

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Software Process Definition using Process Lines: A Systematic Literature Review

Software Process Definition using Process Lines: A Systemati...

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Conferencia Latinoamericana En Informatica (CLEI)

作者： Diogo Matheus Costa Eldânae Nogueira Teixeira Claudia Maria Lima Werner Systems Engineering and Computer Science Department PESC/COPPE/UFRJ Rio de Janeiro Brazil

ISBN: (纸本)9781728104386

Software processes have been the focus of discussion in literature, but defining a software process remains a challenge. The Software Process Line (SPrL) technique offers a systematic process reuse approach that identifies processes' similarities and variability. This study aims to characterize the state-of-the-art of the software process definition using SPrL. A Systematic Literature Review (SLR) was conducted and 26 papers were identified to be studied in depth. The results indicate a concentration of approaches that use mapping/rules techniques to support variability resolution and the need for integrated supporting tools. In addition, three problems that affect the software process definition using SPrL were observed: (1) low understanding of SPrL models complexity and their impact, (2) lack of understanding about the impacts of the defined software process, and (3) experts' knowledge dependence issues in decision-making to solve variability.

关键词： Software Bibliographies Tools Systematics Industries Process control systems engineering and theory

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