1, in the first case, there is no * * * relationship with the author. Generally speaking, it can be judged by the ranking of signatures in SCI papers, where the signatures are the author, where the signatures are the first author and where the signatures are the second author.

2. In the second case, there is an author and some SCI papers with * * *. For this kind of author with the same author as * * *, there will be the same mark in the upper right corner of the author's name, and there will be a corresponding explanation under the author's name. If so, the one after the author belongs to the second author.

3. In the third case, if there are two authors, the author who ranks first is the first author, and those authors who are marked as two works can be called the second author. In addition, the author mentioned above does not include the correspondent, so it is judged whether the correspondent should be the second author. The general name of the correspondent will be marked in the upper right corner, and there will be relevant instructions below the author's name.

4. If the first author is tied, it must be clearly marked. In addition to paying attention to whether the unit recognizes it, it depends on how the magazine identifies the first author. Some magazines rank first by default, that is, the first author. Therefore, whether the first author is recognized or not, and how to make a specific annotation should also consider the specific situation. The recognition made by different authors, different units and different journals is likely to be different.

5. Whether a published SCI paper can be recognized as the first author depends on the specific standards of the unit and the school. Most of them are recognized, but it is better to confirm the relevant requirements with the competent department of the unit. For the first author published in parallel, generally, the first author, the first author in parallel or the author with the same contribution as the first author marked with the word * * * will be scored according to the actual ranking. Papers with the above marks included in SCI shall be regarded as the first author's score.