This chart shows Mechanical Engineering's PR articles in exceptional (3-star) journals such as Nature and Science. It is similar to the Nature Index, but more comprehensive. The star classification follows the Danish Ministry of Higher Education and Science.
How to interpret 3-star journal counts
Starred-journal counts use the Danish Ministry of Higher Education and Science classification. Stars are assigned at the journal level, not to individual PR articles; use them as a venue-prestige proxy and compare within fields.
