People in control : an International Conference on Human Interfaces in Control Rooms, Cockpits and Command Centres, 21-23 June 1999 ; venue, University of Bath, Bath, UK / organised by The Human Systems Engineering Group of the Institution of Electrical Engineers, London, in association with British Computers Society (Human Computer Interaction Specialist Group), Department of Trade and Industry (Advanced Control Theory Transfer Programme), Institute of Chemical Engineers (Process Control Subject Group), Institution of Mechanical Engineers, Ergonomics Society, Safety-Critical Systems Club