History of engineering & technology 20 Technology: general issues 16 Artificial intelligence 14 Computer vision 11 Computer science 9 Computer modelling & simulation 7 Circuits & components 6 Computer networking & communications 6 Electrical engineering 6 Other technologies & applied sciences 6 Software Engineering 6 Applied mathematics 5 Humanities 5 Information technology: general issues 5 Mobile phone technology 5 Research & information: general 5 Social interaction 5 Computer programming / software development 4 Expert systems / knowledge-based systems 4 Imaging systems & technology 4 Medicine 4 Clinical & internal medicine 3 Geographical information systems (GIS) & remote sensing 3 Human-computer interaction 3 Information retrieval 3 Information technology industries 3 User interface design & usability 3 Automatic control engineering 2 Coding theory & cryptology 2 Communications engineering / telecommunications 2