Educational equipment & technology, computer-aided learning (CAL) 60 Physics 24 Politics & government 24 Medicine 17 Education 16 Artificial intelligence 14 Media studies 14 Development economics & emerging economies 13 History of engineering & technology 13 Impact of science & technology on society 13 Research & information: general 13 History 12 Public health & preventive medicine 12 Regional studies 12 Technology: general issues 12 International relations 11 Development studies 10 Ethnic studies 10 Infectious & contagious diseases 10 Software Engineering 10 Teaching skills & techniques 10 Higher & further education, tertiary education 9 Economics 8 Social & cultural anthropology, ethnography 8 Society & social sciences 8 Sociology 8 Computer modelling & simulation 7 Mathematical theory of computation 7 Environmental policy & protocols 6 Humanities 6