Today wireless sensor network has become a primal technology for different kinds of resourceful environment. Sensor node localization specifying where a given sensor node is physically or relatively located is extremely crucial for majority of the programmes in wireless sensor networks. Localization has been key out as one of the leading subject in Wireless Sensor Network (WSN). Many localization algorithms have been proposed for wireless sensor network. In the present work we first review and estimate the shortcomings of the self-positioning existing DV-HOP algorithm i.e. its localization error and accuracy. Finally, a more precise positioning modified DV-HOP algorithm has been presented. The work has been simulated in MATLAB.

Social Networking applications have gained immense popularity amongst students in the last few years. Unfortunately, all such services currently require internet connectivity which inhibits their usefulness when a person is on the move. In this paper we describe a mobile platform, Marauder's Map which enables social networking on the go, by allowing users to keep track of their friends and their activities in a peer to peer fashion using a novel human-based social network routing protocol.