1. International recognition: SCI (Science Index) is internationally recognized as the most authoritative citation index database of sci-tech journals, including the most influential sci-tech journals in the world. Therefore, the academic level and influence of papers published in SCI journals have been highly recognized by international academic circles.

2. Strict review process: SCI journals usually have a strict review process, including peer review, editorial review and other links to ensure that the published papers have high academic quality and innovation.

3. High-quality research: SCI journals usually only accept high-quality research articles, which often require in-depth research and rigorous analysis to meet the publishing standards.

4. High citation rate: Due to the influence and authority of SCI journals, papers published in these journals usually have a high citation rate, which has an important impact on scholars' academic reputation and career development.

5. Promote academic exchanges: The publication of SCI papers can promote academic exchanges and cooperation on a global scale and promote the development of science and technology.

6. Evaluation criteria: In academic circles, the quantity and quality of SCI papers are usually regarded as an important criterion for evaluating the scientific research level of a scholar, research institution or country.

Generally speaking, SCI papers are considered more valuable because they are highly academic and influential, and can reflect the academic level of the author and the value of research results.