Margarida Corte-Real

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In the local access network expansion problem we need to expand a given network (with tree topology) due to traffic demand increase. We can expand the network either by increasing the capacity of its edges and/or by installing equipments that concentrate the traffic of several demand points. This problem has received some attention in the literature. Here,(More)
E A descoberta de uma vacina eficaz na prevençao da hepatite B veio permitir uma reduçao Importante da morbilidade e mortalidade atribuíveis a esta doença infecciosa. No entanto, 2 a 10 o dos adultos saudáveis não respondem à vacinação com produção de anticorpo anti-HBs em títulos considerados protectores (admitindo-se como protectores, doseamentos do ac.(More)
In the local access expansion problem we need to expand a given tree network by increasing the capacity of the edges or by installing concentrating devices in some nodes of the network, in order to satisfy the increase in node demands. It was shown in [4] that the problem can be viewed as an extension of the well-known Capacitated Minimum Spanning Tree(More)
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