1. Senior Lecturer in Geotechnical Engineering, The School of Property and Construction, The Nottingham Trent Univ., Burton St., Nottingham, UK.
2. Lecturer in Geotechnical Engineering, Dept. of Civil and Building Engineering, Loughborough Univ., Loughborough, UK.
3. Professor of Geotechnical Engineering, Dept. of Civil Engineering, Univ. of Birmingham, Edgbaston, Birmingham, UK.