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Context-aware scenarios require the distribution of large amounts of context data over fixed wireless infrastructures. The opportunistic usage of mobile nodes as data carriers has received a great deal of interests in recent years in order to increase system scalability. In this paper, we focus on the overhead introduced by context distribution on mobile devices, and we highlight the need of resource-aware...
With the abundance and ubiquity of mobile devices, a new class of applications is emerging, called participatory sensing (PS), where people can contribute data (e.g., images, video) collected by their mobile devices to central data servers. However, privacy concerns are becoming a major impediment in the success of many participatory sensing systems. While several privacy preserving techniques exist...
In ubiquitous computing environment, user application requires close interaction with the network nodes in its proximity, the interactions are opportunistic and unpredictable with the user's movement. This paper names this phenomenon as a locality problem and provides a model of this problem based on fuzzy set theory. Fuzzy synthetic evaluation method is used to evaluate the local scene members. An...
The increasing processing power, storage and support of multiple network interfaces are promising the mobile devices to host services and participate in service discovery network. A few efforts have been taken to facilitate provisioning mobile Web services. However they have not addressed the issue about how to host heavy-duty services on mobile devices with limited computing resources in terms of...
Context-aware computing benefits mobile applications by adapting systems behavior through user surrounding. However, contextualized information retrieval for mobile user in mobile P2p environment still remains a challenging problem. In this paper, we present JHPeer framework for mobile information retrieval (IR) in hybrid peer to peer (P2P) networks. JHPeer incorporates context engine to fit on mobile...
With the emergence of pervasive computing environments, mobile information sharing and retrieval is becoming an exciting domain that challenges information scientists. In this paper, we describe a hybrid peer to peer context-aware framework for building mobile information sharing applications. A scalable and flexible architecture based on JXTA is presented. The architecture called "JHPeer"...
The widespread adoption of powerful mobile devices creates an unprecedented potential for innovative mobile applications that can enhance users' social interactions. The current centralized mobile system and service architectures do not allow large-scale dynamic interactions between mobile devices, as required by these applications. This paper proposes Mobius, a decentralized solution that supports...
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