Maria Beatriz Felgar de Toledo

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Web service technology provides an infrastructure for developing distributed systems and performing electronic business operations within and across organizational boundaries. It is still evolving. Currently, it is lacking mechanisms to deal with Quality of Service (QoS). Service consumer requirements may include functional and non-functional aspects. The(More)
Although Web service technology allows the development and execution of distributed applications, it still lacks facilities to deal with quality of service (QoS). Consumers may require services with particular nonfunctional characteristics and expect quality level guarantees. The goal of this paper is to propose an extended Web service architecture(More)
Typically, in areas such as e-business and e-government, among others, Web services are used as basic components for building business processes. Participants in a business process may have different computational platforms that should interoperate in order to achieve the process goals. This interoperability is supported by the Web service technology. Thus,(More)
Business processes are important assets to demonstrate an organization competitiveness degree. Business process management (BPM) includes activities that enable the modeling, execution and analysis of business processes. Recently, the association of BPM, the service oriented computing and the Internet technology have broadened the scope of BPM from(More)
The problem of scheduling independent users’ jobs to resources in Grid Computing systems is of paramount importance. This problem is known to be NP-hard, and many techniques have been proposed to solve it, such as heuristics, genetic algorithms (GA), and, more recently, particle swarm optimization (PSO). This article aims to use PSO to solve grid scheduling(More)
The objective of this paper is to discuss the new demands imposed on museums, the possibilities to achieve them using new Information and Communication Technologies (ICTs) and to propose a platform to meet these requirements. The platform will provide services to the external public, the museum staff and researchers. The artifacts to be collected and(More)
The service consumer's confidence in the protection of their privacy is an important factor for the success of electronic services (e-services). It may increase if the service provider offers a description of its data practices. This description can be compared to what the consumer defines as appropriate practices. To allow the exchange of privacy-related(More)
It is widely accepted that middleware is an important architectural element which facilitates the development of software systems. In this paper we propose a novel approach for designing middleware. It is based on hardware motherboards and two distinct views with a clear separation of concerns. The view for middleware designer (MD-view) is concerned with(More)