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Closeness centrality measures the communication efficiency of a specific vertex within a network while the average path length (APL) measures that of the whole network. Since the nature of these two measurements is based on the computation of all-pair shortest path distances, one can perform the breadth-first search method starting at every vertex and(More)
With the exponential growth of the Internet usage, Internet applications are widespread enormously across almost every field, but very few of them actually survive in the market. Among them, the Internet phone service, which has been available since 1995, has fast advanced in terms of offering new value-added services and acquiring an impressive increase in(More)
The information technology has dramatically changed the infrastructure of campus computing environment in recent years, and a dependable architecture has been getting considerable attentions not only because of the performance issues but also the scalable ability. More recently, the enterprise solutions have shifted to campus systems due to the academic(More)