1. Collect other units or public data: We can collect other units or public data in related fields for analysis and comparison, so as to get more comprehensive and objective research conclusions.
2. Questionnaire survey or field survey: Some data and information related to the research topic can be collected through questionnaire survey or field survey, so as to better support the research conclusion.
3. Conduct case studies: You can select some representative actual cases, conduct in-depth research and analysis, and obtain the data and materials needed for the study.
4. Adopt qualitative research methods: If there is insufficient information, you can adopt qualitative research methods to obtain the required research data and information through the analysis of relevant literature and expert interviews.
It should be noted that when carrying out the above methods, it is necessary to follow academic norms and moral standards, and maintain academic integrity and rigorous research. At the same time, when conducting research, we should make specific analysis and judgment according to the research object and research demand, so as to avoid blindly conducting research and ignoring other important factors.