Design and construction Integrated circuits 57 Bridges 38 Automobiles 33 History 27 Very large scale integration 26 Semiconductors 21 Equipment and supplies 17 Sustainable buildings 17 Airplanes 16 Testing 16 Architecture 14 Wireless communication systems 14 Computer-aided design 13 Design 13 Roads 13 Environmental aspects 12 Maintenance and repair 11 Tunnels 11 Circuits 10 Electronic apparatus and appliances 10 Mathematical models 10 Planning 10 Standards 10 Harbors 9 Pavements 9 Radio circuits 9 Technological innovations 9 Junctions 8 Medical instruments and apparatus 8