Georgia Tech's College of Engineering is number six in the annual Academic Ranking of World Universities by the Shanghai Jiao Tong University in China. Last year, the College of Engineering was ranked ninth. The Shanghai rankings are compiled on the basis of six measures: the number of alumni and staff winning Nobel prizes and Fields Medals; the number of highly cited researchers; the number of articles published in Nature and Science; the number of articles indexed in the Thomson Reuters Science Citation Index Expanded and the Social Sciences Citation Index; and per capita performance. Starting from 2003, ARWU has been presenting the world Top 500 universities.