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Introducing software process tailoring to BPMN: BPMNt

Introducing software process tailoring to BPMN: BPMNt

引用

2012 International Conference on Software and system Process, ICSSP 2012

作者： Pillat, Raquel M. Oliveira, Toacy C. Fonseca, Fabio L. Systems Engineering and Computer Science Program - PESC / COPPE Federal University of Rio de Janeiro - UFRJ Rio de Janeiro Brazil

ISBN: (纸本)9781467323529

BPMN 2.0 is a widely used notation to model business process that has associated tools and techniques to facilitate process management, execution and monitoring. As a result using BPMN to model Software Development Process (SDP) can leverage on the BPMN's infrastructure to improve SDP quality. Nevertheless, when using BPMN to model Software Processes one can observe the lack of an important feature: means to represent process tailoring. This article introduces the BPMNt, a conservative extension to BPMN that aims at aggregating a tailoring representation mechanism as the one found at SPEM 2.0. BPMNt uses the extensibility classes already present in the BPMN meta-model. Our work also presents an example to illustrate the approach. © 2012 IEEE.

关键词： Software design

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Formalizing the situation of a business process activity

Formalizing the situation of a business process activity

引用

2012 IEEE 16th International Conference on computer Supported Cooperative Work in Design, CSCWD 2012

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

ISBN: (纸本)9781467312127

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. © 2012 IEEE.

关键词： Business Process Context

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A robust gradient clock synchronization algorithm for wireless sensor networks

A robust gradient clock synchronization algorithm for wirele...

引用

International Communication systems and Networks and Workshops, COMSNETS

作者： André C. Pinho Daniel R. Figueiredo Felipe M. G. França System Engineering and Computer Science Program (PESC/COPPE) Federal University of Rio de Janeiro Rio de Janeiro Brazil

A variation of the classical clock synchronization problem is to synchronize clocks with an error that is proportinal to their distance in the network. Among several applications, gradient clock synchronization in wireless sensor networks can yield precise time coordination of packet transmissions, allowing for time-based collision free transmission scheduling. In this paper, we propose a simple and robust gradient clock synchronization (RGCS) algorithm designed for wireless sensor networks. The algorithm is fully distributed and operates independently of network topology, network routing and has no parameters to tune. It also does not require strict timing or reliability in clock synchronization messages or any global time reference. In particular, RGCS is based on a running average of logical clock rates and addresses specific aspects of gradient synchronization, such as estimating the logical clock of neighbors. We evaluate the algorithm through realistic simulations in various scenarios to illustrate the benefits of our approach. We also compare our results with GTSP a prominent gradient clock synchronization algorithm. Our results indicates that RCGS can operate adequately under high loss rates (50%) and high variability in the period of synchronization messages.

关键词： Synchronization Clocks Hardware Wireless sensor networks Delay Receivers Equations

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Mediating process adaptation through a goal-oriented context-aware approach

Mediating process adaptation through a goal-oriented context...

引用

2012 IEEE 16th International Conference on computer Supported Cooperative Work in Design, CSCWD 2012

作者： Nunes, Vanessa Tavares Werner, Cláudia M. Lima Santoro, Flávia Maria COPPE/PESC - Systems Engineering and Computer Science Program UFRJ PO Box 68511 21945-970 Rio de Janeiro Brazil NP2Tec and Postgraduate Information Systems Program UNIRIO Rio de Janeiro Brazil

ISBN: (纸本)9781467312127

Complexity and dynamism of day-to-day activities in organizations are inextricably linked, one impacting the other, increasing the challenges for constant adaptation on the way to organize work to address emerging demands. Market is demanding systems that are aware of organizations processes and able to evolve and adapt to new situations in everyday working activities. We argue that flexibility in processes could be managed in real time, by PAIS (Process-aware Information systems), using context information collected in the work environment. This paper proposes CGAdapt, a context management architecture approach that aims to improve and automate dynamic process adaptation. We explain how process adaptation may occur in real time through an existent scenario using this proposal and discuss the value of context-awareness to reason about process alternative adaptations in a goal oriented approach. © 2012 IEEE.

关键词： Real time systems

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Introducing Software Process Tailoring to BPMN: BPMNt

Introducing Software Process Tailoring to BPMN: BPMNt

引用

International Conference on Software and system Process (ICSSP)

作者： Raquel M. Pillat Toacy C. Oliveira Fabio L. Fonseca Systems Engineering and Computer Science Program-PESC / COPPE Federal University of Rio de Janeiro Rio de Janeiro Brazil

关键词： Software Business Unified modeling language programming Adaptation models Standards Semantics

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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

关键词： Computational modeling Context Psychology Media Navigation

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Mediating process adaptation through a goal-oriented context-aware approach

Mediating process adaptation through a goal-oriented context...

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International Conference on computer Supported Cooperative Work in Design

作者： Vanessa Tavares Nunes Cláudia M. Lima Werner Flávia Maria Santoro COPPE/PESC-Systems Engineering and Computer Science Program UFRJ Rio de Janeiro Brazil NP2Tec and Postgraduate Information Systems Program UNIRIO Rio de Janeiro Brazil

关键词： Context Materials Business Adaptation models Analytical models

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Multiobjective optimization for project portfolio selection 12

Multiobjective optimization for project portfolio selection

引用

14th International Conference on Genetic and Evolutionary Computation Companion, GECCO'12 Companion

作者： De Barros, Márcio O. Costa, Hélio R. Figueiredo, Fábio V. Da Rocha, Ana Regina C. Post-graduate Information Systems Program - PPGI UNIRIO Av. Pasteur 458 Urca - Rio de Janeiro RJ Brazil COPPE UFRJ System Engineering and Computer Science Department Caixa Postal: 68511 CEP: 21945-970 - Rio de Janeiro Brazil CCA-RJ Brazilian Air Force Ponta do Galeão s/no Ilha do Governador CEP: 21941-510 - Rio de Janeiro Brazil

ISBN: (纸本)9781450311786

This paper proposes a multiobjective heuristic search approach to support a project portfolio selection technique on scenarios with a large number of candidate projects. The original formulation for the technique requires analyzing all combinations of candidate projects, which is unfeasible when more than a few alternatives are available. We have used a multiobjective genetic algorithm to partially explore the search space of project combinations and select the most effective ones. We present an experimental study based on four project selection problems that compares the results found by the genetic algorithm to those yielded by a non-systematic search procedure. Results show evidence that the project selection technique can be used in large-scale scenarios and that GA presents better results than simpler search strategy. Copyright is held by the author/owner(s).

关键词： Multiobjective optimization

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The Single Vehicle Routing Problem with Deliveries and Selective Pickups in a CPU-GPU Heterogeneous Environment

The Single Vehicle Routing Problem with Deliveries and Selec...

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IEEE International Conference on High Performance Computing and Communications (HPCC)

作者： Igor Machado Coelho Luiz Satoru Ochi Pablo Luiz Araújo Munhoz Marcone Jamilson Freitas Souza Ricardo Farias Cristiana Bentes Institute of Computing Fluminense Federal University UFF Niteroi Brazil Department of Computer Science UFOP-Federal University of Ouro Preto and FEAD Ouro Preto Brazil System Engineering Program-COPPE Federal University of Rio de Janeiro Rio de Janeiro Brazil Department of System Engineering State University of Rio de Janeiro Rio de Janeiro Brazil

In this work, we propose a new algorithm to solve a variant of the Vehicle Routing Problem that is the Single Vehicle Routing Problem with Deliveries and Selective Pickups (SVRPDSP). Our algorithm produces good quality solutions that are better than the best known solutions in the literature. In order to reduce the time spent to solve large-sized instances, we also propose here a parallel implementation of our algorithm that explores a heterogeneous environment composed of a CPU and a GPU. Therefore, our algorithm harnesses the tremendous computing power of the GPU to improve the performance of the local searches computation. We obtained average speedups from 2.73 to 16.23 times with our parallel approach.

关键词： Graphics processing unit Vehicles Parallel algorithms Vectors Resource management Optimization Routing

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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： Magdaleno, Andréa Magalhães Araujo, Renata Mendes De Werner, Cláudia Maria Lima System Engineering and Computer Science Program - COPPE/UFRJ Rio de Janeiro RJ Brazil PPGI - Graduate Program in Informatics - UNIRIO Rio de Janeiro RJ Brazil

ISBN: (纸本)9781457703874

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. © 2011 IEEE.

关键词： Productivity

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