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Communications ecosystem covers a huge area from technical issues to business models and human behaviour. Due to this extreme diversity various societies need to discuss with each other, each of them using their own language. Engineers talk about network performance and quality of service, business people talk about average revenue per user and customer(More)
The frequent appearance of empirical rank-frequency laws, such as Zipf's law, in a wide range of domains reinforces the importance of understanding and modeling these laws and rank-frequency distributions in general. In this spirit, we utilize a simple stochastic cascade process to simulate several empirical rank-frequency distributions longitudinally. We(More)
An appropriate service for data traffic in ATM networks requires large buffers in network nodes. However, large buffers without a proper allocation scheme may lead to an unsatisfactory quality of service. Most present allocation schemes either necessitate a complicated queueing system or they do not offer a sufficient fairness. This paper describes a rather(More)
This article provides a simple formula and a practical methodology for analyzing long tails. The same model can be applied to topics as diverse as books, search phrases, size of companies, and geographical distribution of populations. This article makes it possible for anyone to utilize the long tail concept not only as a general idea, but also as a tool to(More)
One of the most important network elements in the Internet are the routers which do relaying of IP packets. Because of growth of the Internet routers currently experience serious problems in relaying traffic in a satisfying speed. The idea of switching Internet traffic flows has recently been introduced and a new technology called IP switching has emerged.(More)
Communications services that facilitate or encourage the forming and bridging of social groups serve an important human need. Such services, therefore, should offer high value. The problem for service planners, however, is to predict the value of these services before they are offered, and to ensure pricing that will actually achieve the desired group(More)