1. Basic theoretical research: Basic theoretical research refers to the exploration and research of basic theories, concepts, principles and models of a certain discipline or field. This kind of research usually involves the core issues and basic concepts of the discipline, as well as unresolved theoretical problems and directions.

2. Applied research: Applied research refers to the application of existing theories, methods and technologies to the solution of practical problems, aiming at solving practical problems in social, economic and technological development. This kind of research usually involves engineering design, manufacturing, management, policy and so on.

3. Empirical research: Empirical research refers to the exploration and research of a phenomenon or problem through data collection, analysis and verification. This kind of research usually needs to adopt scientific research methods and techniques to ensure the reliability and scientificity of the research results.

4. Interdisciplinary research: Interdisciplinary research refers to the intersection and integration between different disciplines or fields to explore new research directions and problems. This kind of research usually needs multidisciplinary knowledge and skills, and adopts interdisciplinary methods and techniques.

5. Social investigation and research: Social investigation and research refers to the description and analysis of social phenomena, crowd characteristics and behavior patterns through questionnaires and in-depth interviews. This kind of research usually needs to adopt appropriate investigation methods and tools to ensure the representativeness of samples and the reliability of research results.

Research direction type

1, System analysis and design: System analysis and design refers to a comprehensive analysis and design of a system or organization, so as to optimize the system structure and improve efficiency and quality. This kind of research usually requires knowledge and skills in systems engineering and management.

2. Mathematical modeling and computer simulation: Mathematical modeling and computer simulation refer to the application of mathematical theory and computer technology to the modeling and simulation of practical problems to predict and optimize the behavior and performance of the system. This kind of research usually requires knowledge and skills in mathematics and computer science.

3. Education and teaching research: Education and teaching research refers to the exploration and research of education and teaching process to improve the quality and effect of education and teaching. This kind of research usually requires the knowledge and skills of pedagogy and psychology.

4. Medical research: Medical research refers to the exploration and research on human physiology, pathology and pharmacology in order to improve human health and treat diseases. This kind of research usually requires medical knowledge and skills.