Alexandre S. Pinto

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Distributed applications are becoming increasingly complex, often requiring the simultaneous use of several communication channels with different qualities-of-service. This paper presents the Appia system, a protocol kernel that supports applications requiring multiple coordinated channels. Appia offers a clean and elegant way for the application to express(More)
The Brazilian Cerrado is a diversity hotspot due to its high level of endemism and rapid loss of habitats. It is estimated that the number of herbaceous species is four times higher than that of woody species. Increasing levels of nitrogen additions to natural ecosystems have been indicated as a determinant of biodiversity loss. We investigated the effects(More)
In this paper we propose a novel probabilistic broadcast protocol that reduces the average end-to-end latency by dynamically adapting to network topology and traffic conditions. It does so by using an unique strategy that consists in adjusting the fanout and preferred targets for different gossip rounds as a function of the properties of each node. Node(More)
1 Introdução Aplicações distribuídas tais como os ambientes virtuais, a simulação distribuída, o trabalho cooperativo suportado por computador (CSCW), os jogos multi-utilizador e os MOOs [7] são aplicações que têm ganho uma importância significativa nosúltimos objectos) constituem um desafio para a teoria e prática dos sistemas distribuídos orientados aos(More)
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