1. research methods: the choice and implementation of research methods have a great influence on the quality of the paper. If the research method is unscientific or the implementation is not rigorous, then the results may be inaccurate or biased.

2. Data quality: Data is the basis of the paper. If there are errors in data collection, processing or analysis, the quality of the paper will be affected.

3. Writing level: The writing level of a paper will also affect its quality. If the language of the paper is clear and logical, readers will read more fluently and understand more deeply.

4. Literature review: Literature review is a summary and evaluation of existing research. If the literature review is not done well, readers may misunderstand the research background and significance of the paper.

5. Conclusions and suggestions: The conclusions and suggestions of the paper are the author's interpretation and application of the research results. If this part is not well written, it may make readers doubt the value of the paper.

6. Citations and references: Correct citations and references can help readers better understand and evaluate your research. If this part is not done well, it may make readers question your research.

7. Format and structure: A standard format and clear structure can make your paper easier for readers to understand. If this part is not done well, it may make readers worry about your paper.

8. Innovation: If the research content of a paper is innovative, its quality will usually be higher.