Design and construction Data processing 21 Wireless communication systems 21 Testing 19 Equipment and supplies 18 Design 16 Automobiles 15 Environmental aspects 15 Sustainable buildings 15 Wind turbines 13 Management 12 Buildings 10 Materials 10 Prosthesis 10 Antennas (Electronics) 9 Automatic control 9 Electric power-plants 9 Construction industry 8 Lasers 8 Roads 8 Semiconductors 8 Air conditioning 7 Concrete beams 7 Digital techniques 7 Energy consumption 7 Finite element method 7 Maintenance and repair 7 Mathematical models 7 Microelectromechanical systems 7 Orthopedic apparatus 7