Ranking Universidades A Nivel Mundial

Indicators
Selected indicators seek to reveal main aspects of research size, performance, impact and internationalization at Worldwide Research Institutions.

SIR World Report 2011 :: Global Ranking Introduction
The current report involves the third release of our annual series Scimago Institutions Rankings World Reports, that based on quantitative data of citation and publication showsbibliometric indicators that unveil some of the main dimensions of research performance of worldwide research-devoted institutions. As in former editions, SIR World Report 2011 aims at becoming an evaluation framework of research performance to Worldwide Research Organizations. The report shows six indicators that will help users evaluate the scientific impact, thematic specialization, output size andinternational collaboration networks of the institutions. The period analyzed in the current edition covers 2005-09. The tables include institutions having published at least 100 scientific documents of any type, that is, articles, reviews, short reviews, letters, conference papers, etc., during the year 2009 as collected by worldwide leader scientific database Scopus by Elsevier. The reportencompasses Higher Education Institutions (HEIs) as well as other research-focused organizations from different sizes, with different missions and from countries in the five continents. Institutions are grouped into five Institutional Sectors: Higher Education, Health System, Government Agencies, Corporations and Others. To elaborate this report, we carry out the challenging task of identifying anddisambiguating all the institutions through an overwhelming number of scientific articles, reviews and conference papers contained in Scopus. The task, which is carried out by a mix of computer and human means, comprises the identification and gathering of institution's affiliation variants under a unique identifiable form as well as the classification into institutional sectors. SIR World Reports2011 is the most comprehensive ranking of Worldwide Research Institutions. Following the goal of embracing every institution around the world with significative scientific output, the ranking now includes 3,042 institutions that together are responsible for more than 80% of worldwide scientific output during the term 2005-09 as indexed in Elsevier’s Scopus database. The intended target audience ofSIR World Report 2011 is formed by policymakers, research managers, researchers, media and general public interested in finding out about research performance of worldwide Institutions.

O::Output
An institution's publication output reveals its scientific outcomes in terms of published documents in scholarly journals.

IC::International Collaboration
IC shows an institution's output ratiothat has been produced in collaboration with foreign institutions. The values are computed by analyzing the institution's output whose affiliation includes more than one country address over the whole period.

NI::Normalized Impact
The values, expressed in percentages, show the relationship of an institution's average scientific impact and the world average, which is 1, --i.e. a score of 0.8 meansthe institution is cited 20% below average and 1.3 means the institution is cited 30% above average. More on NI.

Q1::High Quality Publications
Ratio of publications that an institution publishes in the most influential scholarly journals of the world; those ranked in the first quartile (25%) in their categories as ordered by SCImago Journal Rank SJR indicator.

SI::Specialization Index
TheSpecialization Index indicates the extent of thematic concentration / dispersion of an institution’s scientific output. Values range between 0 to 1, indicating generalistic vs. specialized institutions respectively. This indicator is computed according to the Gini Index used in Economy.

Highlights and New Features
SIR World Report 2011 presents new indicators that will help offer a wider...