Subfield
- Energy Engineering and Power Technology17
- Computer Networks and Communications14
- Waste Management and Disposal12
- Civil and Structural Engineering10
- Management Science and Operations Research9
- Radiological and Ultrasound Technology9
- Media Technology8
- Water Science and Technology8
- Control and Systems Engineering7
- Renewable Energy, Sustainability and the Environment6
- Pollution5
- Software5
- Building and Construction4
- Business and International Management4
- General Social Sciences4
- Information Systems and Management4
- Management Information Systems4
- Computational Mechanics3
- Development3
- Geography, Planning and Development3