The University of Barcelona (Universitat de Barcelona, UB) is a public university located in the city of Barcelona, Catalonia in Spain. The UB is the principal centre of university research in Spain and has become a European benchmark for research activity, both in terms of the number of research programs it conducts and the excellence these have achieved. it is the highest-placed Spanish university in terms of scientific output, with a total of 15,290 papers published between 2006 and 2010, also leading the ranking of Spanish universities in terms of percentage of papers published in high impact journals. With 75 undergraduate programs, 353 graduate programs and 96 doctorate programs to over 63,700 students, the UB was considered to be the best University in Spain in the 2011 QS World University Rankings which ranked the university 148th overall in the world. Its subject rankings were: 74th in Life Sciences & Biomedicine, 89th in Arts & Humanities, 87th in Natural Sciences, 143rd in Social Sciences and 175th in Engineering & IT. In 2010, according to University Ranking by Academic Performance (URAP).