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The article discusses the history of packet switching technology in Great Britain. It suggests that the technology can be attributed to Paul Baran of RAND Corp. who proposed it in the context of a digital communication network for military purpose. It cites the role of Leonard Kleinrock in the development of ARPA through the application of queuing theory with the aim of predicting performance of its design.

This special issue contains four papers selected from the 26th UK Performance Engineering Workshop (UKPEW), which was held during 8–9 July 2010 in the Department of Computer Science at the University of Warwick. UKPEW is the leading UK forum for the presentation of work relating to all aspects of performance modelling and the analysis of computer and telecommunication systems. This year's selected papers demonstrate the variety of topics on offer at UKPEW: performance issues in cloud computing, energy-aware routing in packet networks, source location privacy and multi-hop ad hoc networks for wireless networks. [ABSTRACT FROM AUTHOR]