EEE Journal of Lightwave Technology and has published more than 70 technical papers. He also delivers lectures for university and profes- sional short courses. Goff obtained an honors degree in electrical engineering from the University of Newcastle upon Tyne in 1969 and is a member of the IET. David K. Hunter, B.Eng., Ph.D., MIET, SMIEEE University of Essex David Hunter, now a reader in the Department of Computing and Electronic Systems at the University of Essex, received a first-class honors B.Eng. in electronics and microprocessor engineering from the University of Strathclyde in 1987, and a Ph.D. from the same university in 1991 for research on optical TDM switch architectures. He then researched optical net- working and optical packet switching at Strathclyde. In August 2002, he began teaching at the University of Essex, concentrating on TCP/IP, network performance modeling, and Contributors computer networks. David has authored or co-authored more than 110 publications. From 1999 until 2003 he was associate editor of IEEE Transactions on Communications and was associate editor of IEEE/OSA Journal of Lightwave Technology from 2001 until 2006. He is a chartered engineer, a member of the IET, a senior member of the IEEE, and a professional member of the ACM. Malcolm D. Macleod, B.A., Ph.D. QinetiQ Ltd Malcolm Macleod graduated from the University of Cambridge with a B.A. in electronic engineering and a Ph.D. for his work on the discrete optimization of DSP systems. From 1978 to 1988, he worked for Cambridge Consultants Ltd. on a wide range of research and development projects. In 1988 he joined the engineering department of Cambridge Univer- sity as a lecturer in signal processing and communications and was subsequently the depart- ment's director of research. Malcolm joined QinetiQ Ltd in Malvern as a senior research scientist and technical manager in November 2002. In 2007 he was appointed a visiting professor at the University of Strathclyde. A fellow of the IEE, Malcolm is a chartered engi- neer and an as