Fatemeh Sharifkhani

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Since the emergence of peer to peer networks, search efficiency in such networks has been a matter of great concern, as it directly effects resource management of the network and influences users' satisfaction. In unstructured p2p networks, various search algorithms have been proposed so far that offer a tradeoff between scalability, congestion and user's(More)
Success rate, query hit rate and speed of search are some common metrics for evaluating p2p search algorithms. Yet, these metrics do not consider properties of discovered sources and their impact on download performance. A requesting peer is interested in stable serving peers with high upload bandwidth to minimize its download time and therefore, this is(More)
In this paper, a new search algorithm in heterogeneous hierarchical unstructured p2p networks is presented which takes into account heterogeneity of peers such as upload bandwidth, life time in the network and process capacity in its peer discovery policy as factors that influence download performance and user satisfaction. One advantage of this algorithm(More)
A package has been developed to assist investigation of the availability percentage of non-geostationary satellites. The package is general and can be used to simulate the availability percentage for all regions on both sides of the equatorial orbit. Further, the availability percentage for any specific country can be determined. The availability percentage(More)
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