In the past few years, more and more researchers have paid close attention to the emerging
field of delay tolerant networks (DTNs), in which network often partitions and end-to-end …

Social network-based Sybil defenses exploit the algorithmic properties of social graphs to
infer the extent to which an arbitrary node in such a graph should be trusted. However, these …

Encounter-based social networks and encounter-based systems link users who share a
location at the same time, as opposed to the traditional social network paradigm of linking …

Connectivity and trust within social networks have been exploited to build applications on
top of these networks, including information dissemination, Sybil defenses, and anonymous …

Delay Tolerant Networks (DTNs) are sparse networks, in which communication is possible
without end-to-end connectivity. A node in DTN is considered as selfish when that node is …

Online social networks like Twitter and Facebook have become critical infrastructure for
communicating and spreading news, especially in times of natural disasters or political …

The last 10 years of Internet development have been dominated by the growing popularity of
cloud computing and online social networks. These enable the building of new services …

In this chapter, I present an application of a general purpose, multi-application mobile node
sensor network based on mobile code applied to emergency scenarios. Mobile nodes host …

In this chapter we explain how to include mobile code in opportunistic networking (OppNet)
messages to improve its performance. Store-carry-and-forward OppNet protocols offer new …

Connectivity and trust in social networks have been exploited to propose applications on top
of these networks, including routing, Sybil defenses, and anonymous communication …