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In this paper we seek to improve our understanding of human mobility in terms of social structures, and to use these structures in the design of forwarding algorithms for Pocket Switched Networks (PSNs). Taking human mobility traces from the real world, we discover that human interaction is heterogeneous both in terms of hubs (popular individuals) and(More)
Community is an important attribute of Pocket Switched Networks (PSN), because mobile devices are carried by people who tend to belong to communities. We analysed community structure from mobility traces and used for forwarding algorithms [12], which shows significant impact of community. Here, we propose and evaluate three novel distributed community(More)
The emergence of Delay Tolerant Networks (DTNs) has culminated in a new generation of wireless networking. We focus on a type of human-to-human communication in DTNs, where human behaviour exhibits the characteristics of networks by forming a community. We show the characteristics of such networks from extensive study of real-world human connectivity(More)
Wireless Sensor Networks (WSNs) provide a new paradigm for sensing and disseminating information from various environments , with the potential to serve many and diverse applications. Current WSNs typically communicate directly with a centralized controller or satellite. On the other hand, a smart WSN consists of a number of sensors spread across a(More)
We describe a novel approach for content-based publish/subscribe system in mobile ad-hoc networks and show preliminary experiment results. We extended ODMRP (on-demand multicast routing protocol) using aggregated summaries of content-based subscriptions in Bloom filters expression for the dynamic construction of an event dissemination structure. ODMRP's(More)
The recent evolution of ubiquitous computing has brought with it a dramatic increase of event monitoring capabilities by wireless devices and sensors. Such systems require new, more sophisticated, event correlation over time and space. This new paradigm implies composition of events in heterogeneous network environments, where network and resource(More)
Event broker grids, that deploy the publish/subscribe communication paradigm, extend the capabilities of seamless messaging in heterogeneous network environments. In order to support such mixed network environments, we integrate publish/subscribe semantics with multicast routing in mobile ad hoc networks. Dynamic construction of an event dissemination(More)
The current Online Social Networks' infrastructure is composed by thousands of servers distributed across data-centers spread over several geographical locations. These servers store <i>all</i> the users' information (profile, contacts, contents, etc). Such an infrastructure incurs high operational and maintenance costs. Furthermore, this may threaten the(More)