日本NISTP报告称２０１８至２０２０年间中国的研究产出已经超过美国：（

China overtakes the US in scientific research output

https://www.theguardian.com/world/2022/aug/11/china-overtakes-the-us-in-scientific-research-output

The report, which was published by Japan’s National Institute of Science and Technology Policy (NISTP) on Tuesday, found that China now publishes the highest number of scientific research papers yearly, followed by the US and Germany.

The Japanese NISTP report also found that Chinese research comprised 27.2% of the world’s top 1% most frequently cited papers... The US accounted for 24.9% of the top 1% most highly cited research studies, while UK research was third at 5.5%.

China published a yearly average of 407,181 scientific papers, pulling ahead of the US’s 293,434 journal articles and accounting for 23.4% of the world’s research output, the report found.

China accounted for a high proportion of research into materials science, chemistry, engineering and mathematics, while US researchers were more prolific in research into clinical medicine, basic life sciences and physics.

Papers that receive more citations than 99% of research are “works that are seen as being in the class of Nobel prize winners, the very leading edge of science”, study co-author Dr Caroline Wagner said at the time. “The US has tended to rank China’s work as lower quality. This appears to have changed.”

日本的这个报告显示论文数量和质量上中国的研究有大幅飞跃。但是两国的主力研究范围有所不同，美国主力研究集中在临床医学，基础生命科学和物理，而中国的研究集中在材料，化学，工程和数学方面。

我个人觉得非常不可思议的，以往中国灌水论文，自己人互相引用，这些我都有所耳闻。但是这次日本出报告，我觉得就是警钟，美国应该认认真真地从行动上加强警戒了。