Suchergebnisse

Developments in communication technologies especially in wireless have enabled the progress of low-cost and lowpower wireless sensor networks (WSNs). The features of such WSN are holding minimal energy, weak computational capabilities, wireless communication and an open-medium nature where sensors are deployed. WSN is underpinned by application driven such as military applications, the health sector, etc. Due to the intrinsic nature of the network and application scenario, WSNs are vulnerable to many attacks externally and internally. In this paper we have focused on the types of internal attacks of WSNs based on OSI model and discussed some security requirements, characterizers and challenges of WSNs, by which to contribute to the WSN-s security research.

While mobile phones are making significant inroads in many developing countries, little remains known about the policy and infrastructure constraints that affect their use for growth of micro enterprises. We address this gap in the literature. The uniqueness of our study also lies in the focus on women micro entrepreneurs in a remote Pacific island country. To obtain both the demand-side and supply-side perspectives, we conducted semi-structured interviews of 74 women micro entrepreneurs and ten key informants from the Fijian Government, mobile network operators (MNOs), and financial institutions. We found that appropriate policy framework, supporting infrastructure and appropriate ecosystem are required for rapid uptake of mobile value added services by women owned micro enterprises in Fiji. A significant number of women micro entrepreneurs were willing to embrace mobile value added services if these were made available with adequate security and at reasonable cost.