A torsional damping model for geared compressor shaft trains, F. Viggiano and W. attinger; the pulsation vibration connetion, R.W. Beyer; vibration problems in two-pole electric motors, M. Buckland; effects of unbalanced magnetic pull in cryogenic submerged electric motor pumps, S.G. Rush; experimental dynamic coefficients of long annular pump seals, R.D. Brown and M. Ismail; developments in vibration monitoring for vertical hydro-electric machines, C. Dagnall; wavelets: an alternative to Fourier analysis, J.C. O'Brien and J. MacIntyre.