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Reggio Calabria, Italy

Ducrocq T.,French Institute for Research in Computer Science and Automation | Hauspie M.,University Lille1 | Mitton N.,French Institute for Research in Computer Science and Automation | Pizzi S.,University Mediterranea Of Reggio
Proceedings - 2014 IEEE 28th International Conference on Advanced Information Networking and Applications Workshops, IEEE WAINA 2014 | Year: 2014

Wireless Sensor Networks (WSN) are composed of constrained devices and deployed in unattended and hostile environments. Most papers presenting solutions for WSN evaluate their work over random topologies to highlight some of their 'good' performances. They rarely study these behaviors over more than one topology. Yet, the topology used can greatly impact the routing performances. This is what we demonstrate in this paper. We present a study of the impact of the network topology on algorithm performance in WSNs and illustrate it with the geographic routing. Geographic routing relies on node coordinates to route data packets from source to destination. We measure the impact of different network topologies from realistic ones to regular and very popular ones through extensive simulation and experimentation campaigns. We show that different topologies can lead to a difference of up to 25% on delivery ratio and average route length and more than 100% on energy costs. © 2014 IEEE. Source


Barreca F.,University Mediterranea Of Reggio | Fichera C.R.,University Mediterranea Of Reggio
CEUR Workshop Proceedings | Year: 2015

Over the last few years, the building industry has been focusing on research, on the construction of passive houses and on the use of natural, local materials that are non-toxic, recyclable and can assure high thermal insulation. Cork is a natural material whose qualities have been known since ancient times and which fully meets sustainability requirements. Cork granulate is a sustainable solution that recycles a waste product, which substantially keeps the characteristics of the original material, turning it into a resource for manufacturing new products, such as insulating panels made up of cork agglomerate, which are increasingly used in the building sector. In this paper, certain thermophysical parameters of six panels of cork agglomerate are evaluated. The tested panels of granulated cork showed thermophysical characteristics similar to those of the cork bark and even highlighted a higher diffusivity value than natural cork. Ultimately, it may be assumed that the panels of agglomerated cork are a suitable and sustainable solution particularly for the thermal insulation of buildings in hot climate areas and where a healthy environment is required, e.g. where agri-food products are processed and stored. Copyright © 2015 for this paper by authors. Source

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