Philosophy: epistemology & theory of knowledge 41 Research & information: general 29 Education 28 Sociology 27 Society & social sciences 22 Expert systems / knowledge-based systems 21 Humanities 17 Artificial intelligence 15 Philosophy 15 Media studies 14 History of engineering & technology 13 Impact of science & technology on society 10 Information technology: general issues 10 Cultural studies 9 Knowledge management 9 Social & cultural history 9 Society & culture: general 9 Technology: general issues 9 Educational equipment & technology, computer-aided learning (CAL) 8 History 8 Information retrieval 8 Network hardware 8 Software Engineering 8 Business & management 7 Development economics & emerging economies 7 Economics 7 Educational strategies & policy 7 Human geography 7 Political science & theory 7 Sustainability 7