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Communication middleware simplifies the construction of component-based distributed applications [1] [2]. However, the lack of flexibility in the construction of the middleware itself imposes limitations and is a major concern [3-7]. While applications can detect changes in their execution environment, they cannot customize the underlying middleware to(More)
  • Fernando Miguel Pais, Graça Lobo, +39 authors Donna Eiskamp
  • 2000
Genetic algorithms (GAs) have been used to solve difficult optimization problems in a number of fields. One of the advantages of these algorithms is that they operate well even in domains where little is known, thus giving the GA the flavor of a general purpose problem solver. However, in order to solve a problem with the GA, the user usually has to specify(More)
Grid computing technology improves the computing experiences at organizations by effectively integrating distributed computing resources. However, just a small fraction of currently available Grid infrastructures focuses on reutilization of existing commodity computing resources. This paper introduces InteGrade, a novel object-oriented middleware Grid(More)
University of Brasilia, Department of Management, Caixa-Postal: 4320, 70910-900 Brasilia, DF, Brazil Nottingham University Business School, Nottingham, UK Department of Computer Science, Institute of Mathematics and Statistics, University of São Paulo, 207-C, Rua do Matão, 1010, Cidade Universitária, 05508-090 São Paulo, SP, Brazil Department of Management(More)
The first decades of the new millennium will witness an explosive growth in the number and diversity of networked devices and portals. We foresee high degrees of mobility, heterogeneity, and interactions among computing devices connected to global networks. While previous research in distributed operating systems solved many problems related to resource(More)
In this paper, we investigate agile team perceptions of factors impacting their productivity. Within this overall goal, we also investigate which productivity concept was adopted by the agile teams studied. We here conducted two case studies in the industry and analyzed data from two projects that we followed for six months. From the perspective of agile(More)
The InteGrade project is a multi-university effort to build a novel grid computing middleware based on the opportunistic use of resources belonging to user workstations. The InteGrade middleware currently enables the execution of sequential, bag-of-tasks, and parallel applications that follow the BSP or MPI programming models. This article presents the(More)