Design and construction 52 Mathematical models 44 Data processing 40 Materials 34 Signal processing 31 Food 30 Analysis 25 Management 25 Integrated circuits 23 Mathematics 21 Digital techniques 20 Environmental aspects 19 Control theory 18 Research 18 Automatic control 17 Image processing 17 Pollution 17 Design 16 Very large scale integration 16 Food industry and trade 15 Physiological aspects 15 Composite materials 14 Wireless communication systems 14 Electronic circuit design 12 Physiological effect 12 System analysis 12 Testing 12 Collected works 11 Computer-aided design 11 Fiber optics 11