Introduction T. R. Addis; 1. Machine executable skills from 'silent' brains D. Michie; 2. The specification of real-time software R. Threadgold; 3. Accessing external applications from knowledge- based systems R. W. Southwick, Y. Cosmadopoulos and K. Stathis; 4. A generic model of knowledge-based systems tools L. Peake; 5. Cybernetics: an introduction K. Warwick; 6. A new neural coupling algorithm for speech processing P. Wu and K. Warwick; 7. Computer recipe prediction using neural networks M. J. Bushnell, J. M. Bishop and S. Westland; 8. Expert system techniques in power distribution design K. K. Kuan and K. Warwick; 9. A real-time KBS in marine navigation F. P. Coenen and G. P. Smeaton; 10. Real time expert systems in the COGSYS environment T. Morgan; 11. ALDACS - A knowledge-based system to assist power plant operation D. Brown and T. P. Mayfield; 12. Knowledge-based systems and systems engineering: integration in the ESPRIT framework B. Lepape; 13. A computerized interactive hole operation planning expert H. G. Vogt and P. A. Zaring; 14. Experience of mediating representation in an industrial application S. Alshawi and G. Quigley; 15. Representing knowledge as arguments: applying expert system technology to judgemental problem-solving P. Clark; 16. Knowledge-based systems for multi-criterion decision making D. McSherry; 17. Structuring financial expert systems to defend against negligence V. Mital and L. Johnson; 18. Object orientation for distributed object oriented databases D. R. McGregor; 19. Default information in database systems J. King, A. Poulovassilis and C. Small; 20. An OODB with entity-based persistence: a protein modelling application P. M. D. Gray and G. J. L. Kemp; 21. Towards large knowledge bases: automating knowledge elicitation, knowledge verification and knowledge base building P. A. Swaby; 22. An information engineering methodology for the development of knowledge-based systems A. I. Horvitz, A. R. Probst and D. Wenger; 23. Scaling up knowledge systems: an architecture for the Giga knowledge-base T. R. Addis and M. C. C. Nowell; 24. Augmenting the RETE network to efficiently compile a blackboard system T. Chehire; 25. Unifying computing: inductive learning and logic J. G. Wolff and A. J. Chipperfield; 26. Programming intelligence: trends and future directions in AI languages G. Shearer; 27. Probabilistic induction by dynamic path generation for continuous attributes A. P. White and W. Z. Liu; 28. ATENA: a knowledge- based system for automatic pagination of yellow directories J. A. Camara, J. F. Martins and M. S. Jacome; 29. Object-oriented expert diagnostic systems: design principles A. Narayanan and Y. Jin.