Encontrados 4 documentos, a visualizar página 1 de 1
Location Privacy Extensions for the Host Identity Protocol
Alfredo Matos; Justino Santos; João Girão; Marco Liebsch; Rui AguiarPrivacy and security are key aspects on future communicationnetworks. The Host Identity (HIP) aims to provide identity based security in new networks. In this document we propose an aditional framework based on the Host Identity Protocol that provides location privacy to registered attendents. ; Privacy and security are key aspects on future communicationnetworks. The Host Identity (HIP) aims to provide identi...
Projecto 3: Síntese e Implementação de Circuitos Digitais Reconfiguráveis Dinam...
Cláudio Teixeira; João GirãoThe paper presents the results of the project proposed to the authors (who are the 4th year students of LECT) and shows how the specified problem has been solved. The description of the project and the basic requirements have been considered in the papers [1,2]. ; Este artigo apresenta os resultados do projecto proposto aos autores (alunos do 4.º ano da LECT) e explica como o...
Implementing Charging in Mobile Ad Hoc Networks
João Girão; João Paulo Barraca; Bernd Lamparter; Dirk Westhoff; Rui L. AguiarIn order to keep up with new networking needs, it becomes necessary to adopt mechanisms for charging network usage in a universal way. The Secure Charging Protocol (SCP) aims at answering this complex authentication, authorization, accounting and charging (AAAC) problem, and provides a view based on a different business model, one that has been adjusted to cope with technologi...
Use of biogenic sulfide for the synthesis of CuS nanocrystals and nanocomposites
Pinto da Costa, João; Girão, Ana Violeta; Lourenço, J. P.; Monteiro, O. C.; Trindade, Tito; Costa, Maria ClaraDuring the metabolism of organic matter (CH2O), sulfate-reducing bacteria (SRB) use sulfate as the terminal electron acceptor, resulting in the production of H2S. This biologically generated sulfide, in the presence of metal ions, can be used for metal precipitation (Bhagat et al., 2004). The use of SRB in bioremediation processes, namely, in the reduction of highcontent sulfate and metal effluents, is well doc...
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