| Category | Number of Theses |
|---|
| Environmental Engineering and Science in Civil Engineering | 68 |
| Reliable and High-Performance Computing | 53 |
| Networking | 47 |
| Signal and Image Processing | 42 |
| Power and Energy Systems | 40 |
| Decision and Control | 40 |
| Energy Systems and Thermodynamics | 39 |
| Electromagnetics | 37 |
| Control Systems | 31 |
| Materials Behavior | 31 |
| Experimental Condensed Matter Physics | 31 |
| Computer Architecture and Compilers | 30 |
| Databases and Information Systems | 28 |
| Circuits | 27 |
| Artificial Intelligence: Machine Learning, Vision, and Robotics | 27 |
| Operating Systems and Security | 27 |
| Bioacoustics | 27 |
| Manufacturing Systems | 27 |
| Programming Languages, Formal Systems, and Software Engineering | 26 |
| Structural Engineering and Structural Dynamics | 26 |
| Thin-Film Electronics | 25 |
| Communications | 25 |
| Parallel Processing | 24 |
| Theoretical Condensed Matter Physics | 24 |
| Digital Signal and Imaging Processing | 23 |
| Materials Processing | 23 |
| None | 21 |
| Heat Transfer | 21 |
| Graphics and Visualization | 20 |
| Combustion and Propulsion | 19 |
| Advanced Automation | 18 |
| Aerodynamics | 18 |
| Materials and Structures | 17 |
| Environmental Hydrology and Hydraulic Engineering | 17 |
| Distributed Systems | 17 |
| Transportation Facilities and Systems | 16 |
| Off-Road Equipment Engineering | 16 |
| Optoelectronics | 15 |
| Algorithms and Theory | 15 |
| Automotive Systems | 14 |
| Nano-, Micro-, and Meso-Technology | 14 |
| Scientific Computing | 13 |
| Semiconductors | 13 |
| Fluid Dynamics | 12 |
| Construction Materials | 12 |
| Food and Bioprocess Engineering | 12 |
| Mechanics of Fluids | 12 |
| Optical Imaging | 12 |
| Magnetic Resonance | 12 |
| Nanoscience and Technology | 11 |
| Architecture and Systems | 10 |
| Operations Research | 10 |
| Dynamic Systems | 10 |
| Real-Time and Embedded Systems | 10 |
| Design Methodology and Tribology | 10 |
| Computational Fluid Dynamics | 9 |
| Digital Signal and Image Processing | 9 |
| Bioengineering | 9 |
| Soft Materials | 9 |
| Astrodynamics | 8 |
| Experimental Particle Physics | 8 |
| Parallel Computing | 8 |
| Artificial Intelligence | 8 |
| Behavior of Engineering Materials | 8 |
| Semiconductor Physics | 8 |
| Bioenvironmental Engineering | 8 |
| Software Engineering | 8 |
| HumanComputer Interfaces | 8 |
| Geotechnical Engineering | 8 |
| Remote Sensing | 8 |
| Applied Plasma Physics | 7 |
| Thin Films and Charged Particles | 6 |
| Atomic, Molecular, and Optical Physics | 6 |
| Computational Science and Engineering | 6 |
| Optical Physics and Engineering | 6 |
| Production Management | 6 |
| High Frequency Devices | 6 |
| Nano-, Micro-, and Meso-technology | 6 |
| Composites | 6 |
| Analog and Digital Circuits | 6 |
| Computer Engineering | 5 |
| Experimental Nuclear Physics | 5 |
| High-Frequency Devices | 5 |
| Biomolecular and Biological Physics | 5 |
| Mechanical Behavior of Solids | 5 |
| Phase Transformation and Microcharacterization | 5 |
| Nuclear Materials, Materials Science and Performance, Radiation Effects, and Waste Management | 5 |
| Thermal Hydraulics and Reactor Safety | 5 |
| Tunneling Microscopy | 5 |
| Systems and Control | 4 |
| Engineering Mechanics | 4 |
| Electrical Ceramics | 4 |
| Dynamics, Vibrations, and Waves | 4 |
| Site-Specific Agriculture | 4 |
| Mechanics of Solids | 4 |
| Theoretical Astrophysics | 4 |
| Microelectromechanical Systems (MEMS) | 4 |
| Semiconductor Lasers | 4 |
| Advanced Processing and Circuits | 4 |
| Real-time Systems | 4 |
| Design Theory and Methodology | 4 |
| Lasers | 4 |
| Dynamical Systems | 4 |
| Earthquake Engineering | 4 |
| Construction Management | 4 |
| Water Quality | 4 |
| Nuclear Fusion | 4 |
| Soil and Water Resources | 3 |
| Robotics | 3 |
| Ceramic Synthesis and Processing | 3 |
| Computer Networks | 3 |
| Electromagnetic Communication and Electronics Packaging | 3 |
| Theoretical Biological Physics | 3 |
| Nondestructive Evaluation and Testing | 3 |
| Human Factors | 3 |
| Structural Dynamics | 3 |
| Advanced Technology Management | 3 |
| Theoretical Particle Physics | 3 |
| Optical and Discharge Physics | 3 |
| Human Factors and Ergonomics | 3 |
| Soil and Water Resources Engineering | 3 |
| Numerical and Scientific Computing | 3 |
| Computational Mechanics | 3 |
| Health Physics, Radiological, and Medical Applications | 3 |
| Biomaterials | 3 |
| Structural Engineering and Structural Mechanics | 3 |
| Applied Computation Theory | 2 |
| Ceramic Coatings | 2 |
| Supercomputing Research and Development | 2 |
| System Safety, Reliability and Design | 2 |
| Programming Languages | 2 |
| Railroad Engineering | 2 |
| Complex Systems | 2 |
| Low-Energy Nuclear Reactions | 2 |
| Propulsion and Combustion | 2 |
| Aeronomy | 2 |
| Materials Chemistry | 2 |
| Environmental Engineering | 2 |
| Microelectromechanical Systems | 2 |
| Cementitious Materials | 2 |
| Propulsion | 2 |
| Ceramic and Glassy Solids | 2 |
| Combustion | 2 |
