Learn More
In this study, we develop a theoretical model based on social network theories and analytical methods for exploring collaboration (co-authorship) networks of scholars. We use measures from social network analysis (SNA) (i.e., normalized degree centrality, normalized closeness centrality, normalized betweenness centrality, normalized eigenvector centrality,(More)
The Internet Demand Experiment or INDEX is a market and technology trial. Its objective is to determine how much users value different qualities of service for Interent access. Findings from the trial imply that today's system of flat-rate pricing by ISPs is very inefficient. Flat-rate pricing wastes resources, requires light users to subsidize heavy users,(More)
The Internet Demand Experiment or INDEX is a market and technology trial. Its objective is to determine how much users value different qualities of service for Interent access. Findings from the trial imply that today's system of flat-rate pricing by ISPs is very inefficient. Flat-rate pricing wastes resources, requires light users to subsidize heavy users,(More)
The major shortcoming of Grid middleware systems is the lack of economic-enhanced Grid services. These new services are necessary in order to let Grid users benefit from the properties of the Grid. Those properties comprise the availability of on-demand computational power, simplicity of access to resources, low cost of ownership, and a pay-for-use pricing(More)
The open and global nature of the Internet provides the possibility of developing and using many new services (such as Grid services) to any user. These users can be the general public, academic institutions, SMEs, or larger organisations. Grid services could range from a simple service charged at low rate but aiming for mass usage to complex services(More)
For many years, the convergence of Internet data services and transport network services based on optical transmission has been at the heart of carriers' investments and business strategies. Over time, the inherent segmentation of IP and transport networks has created major technology differences, thus impacting their management and operation. In addition,(More)