Paulo Melo

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This paper presents an approach to the reconfiguration of radial distribution networks, for both loss reduction and service restoration, using the same meta-heuristic tool: the simulated annealing algorithm. Besides the main objective of each problem (minimizing losses or load not supplied) minimization of the total number of switching device operations is(More)
The authors developed an algorithm and a proof-of-concept tool to help business analysts search a pool of hundreds or thousands of services to find the closest ones to their needs when they are composing business processes, even when an exact match does not exist. The authors achieve this by semantically annotating the services with properties from an(More)
In end-to-end connections it is sometimes not possible to find a totally disjoint path pair. In this context it may be reasonable to accept a path pair which is as disjoint as possible, and thus provide the best (in a certain sense) level of the single fault protection that can be ensured. A Shared Risk Link Group (SRLG) is a group of links which have a(More)
This paper presents the VIP Analysis plug-in of Decision Deck 1.1, a platform that hosts different evaluation methods to support decision makers in the collaborative evaluation of alternatives in a multi-criteria and multi-experts setting. VIP Analysis is a tool for aggregation of multicriteria performances by means of an additive value function under(More)
This paper presents views on how quantitative multiple criteria decision-making (MCDM) approaches may be applied to certain aspects of user experience design and evaluation (D&E) methods identification, emphasizing its strengths and weaknesses for this task. Often D&E methods need to be applied in contexts different of those they had been applied before and(More)
This communication intends to present the group supporting mechanisms that are being built into the AGAP group decision support system (Aid for Group Analysis and evaluation of Projects [6]). In it we make an abridged system description, focusing on AGAP's main components. We then detail the framework that was implemented for supporting distributed groups,(More)
An increasing number of people reports sleeping problems. In the present paper we describe Somnia: a system designed to support remote couples to fall asleep faster and to enhance their sleep quality. Following a user-centered design process, Somnia was prototyped and evaluated. Qualitative feedback after a two-week user study showed that Somnia succeeded(More)
Since the end of 2004, when the law decree about accessibility for Brazilian governmental Web sites came into force, the federal agencies have been struggling to conform to the norms of law. Discussions about both evaluation and fixing of pages with access barriers are taking place on the mainstream, but little attention has been paid to a feature commonly(More)
BACKGROUND The authors conducted a two-year clinical trial to evaluate the effectiveness of two resin-based composite materials for Class II restorations placed according to two filling techniques. METHODS Twenty-six patients received 105 Class II restorations, which the authors distributed randomly into three groups of 35 each. The resin-based composite(More)