Academic Ranking of World Universities

Methodology for ShanghaiRanking's Global Ranking of Academic Subjects 2017

Ranking Subjects

In 2017 Global Ranking of Academic Subjects, institutions are ranked in 52 subjects across natural sciences, engineering, life sciences, medical sciences, and social sciences.

Selection of Universities

To be included in a subject ranking, the universities need to have a minimum number of research publications during the period of 2011-2015. The publication threshold is different for different subjects. Bibliometric data are collected from InCites. Web of Science categories are mapped to 52 academic subjects. Details can be found here.

Indicators and Weights

Different weights are allocated to the indicators for different subjects, as listed below. For each indicator, institutions are calculated as a percentage of the top scored institution and then multiplied by the allocated weight. A final score is arrived by adding scores for all indicators and the final score is ranked in descending order.

Definition of Indicators

Indicators Definition
PUB
PUB is the number of papers authored by an institution in an Academic Subject during the period of 2011-2015. Only papers of 'Article' type are considered. Data are collected from InCites database. Papers in different Web of Science categories are grouped into relevant Academic Subjects (Classification of Web of Science Categories into Academic Subjects).
CNCI
Category Normalized Citation Impact (CNCI) is the ratio of citation of papers published by an institution in an Academic Subject during the period of 2011-2015 to the average citation of papers in the same category, of the same year and same type. A CNCI value of 1 represents world-average performance while a value above 1 represents performance above the world average. Only papers of 'Article' type are considered. Data are collected from InCites database.
IC
International collaboration (IC) is the number of publications that have been found with at least two different countries in addresses of the authors divided by the total number of publications in an Academic Subject for an institution during the period of 2011-2015. Only papers of ‘Article’ type are considered. Data are collected from InCites database.
TOP
TOP is the number of papers published in Top Journals in an Academic Subject for an institution during the period of 2011-2015. Top Journals are identified through ShanghaiRanking’s Academic Excellence Survey or by Journal Impact Factor. In 2017, 94 top journals selected by the Survey are used in rankings of 33 Academic Subjects. The list of the top journals can be found here. For Academic Subjects that do not have journals identified by the Survey, the JCR top 20% journals are used. Top 20% journals are defined as their Journal Impact Factors in the top 20% of each Web of Science category according to Journal Citation Report (JCR) 2015, and then aggregated into different Academic Subjects. Only papers of ‘Article’ type are considered. In the Academic Subject of Public Health, although a top journal is selected by the Survey, there is no ‘Article’ type paper on it, therefore we use JCR top 20% journals instead.
AWARD
AWARD refers to the total number of the staff of an institution winning a significant award in an Academic Subject. Staff is defined as those who work full-time at an institution at the time of winning the prize. If a researcher was retired at the time of winning the award, we count the institution where the researcher’s last full-time academic position was at. The significant awards in each subject are identified through ShanghaiRanking’s Academic Excellence Survey. The list of the significant awards in each subject can be viewed here.
If a winner is affiliated with more than one institution at the time of winning the award, each institution is assigned the reciprocal of the number of institutions. If the award is awarded to more than one winner in one year, weights are set for winners according to their proportion of the prize. Different weights are set according to the periods of winning the prizes. The weight is 100% for winners in 2011-2015, 75% for winners in 2001-2010, 50% for winners in 1991-2000, and 25% for winners in 1981-1990.

Data Sources

Indicators Sources
PUB
CNCI
IC
TOP
AWARD Nobel Prize in Physics
http://www.nobelprize.org/nobel_prizes/
Nobel Prize in Chemistry
http://www.nobelprize.org/nobel_prizes/
Nobel Prize in Physiology or Medicine
http://www.nobelprize.org/nobel_prizes/
The Sveriges Riksbank Prize in Economic Sciences in Memory of Alfred Nobel
http://www.nobelprize.org/nobel_prizes/
Fields Medal
http://www.mathunion.org/general/prizes/fields/details/
The Abel Prize
http://www.abelprize.no/
Priestley Medal
http://www.acs.org/content/acs/en/funding-and-awards/awards/national/bytopic/priestley-medal.html
Wolf Prize in Chemistry
http://www.wolffund.org.il/index.php?dir=site&page=content&sub=p&cs=3052
Crafoord Prize in Geosciences
http://www.crafoordprize.se/
Penrose Medal
http://www.geosociety.org/awards/aboutAwards.htm#penrose
International Award of Merit in Structural Engineering
http://www.iabse.org/IABSE/IABSE_Association/Awards/Award_of_Merit/IABSE/association/Award_files/International_Award_of_Merit_in_Structural_Engineering/Merit.aspx?hkey=4e67443b-411c-4a37-9e42-0c99b434d5f1
A. M. Turing Award
http://amturing.acm.org/
ASME Medal
https://www.asme.org/about-asme/get-involved/honors-awards/achievement-awards/asme-medal
Timoshenko Medal
https://www.asme.org/about-asme/get-involved/honors- awards/achievement-awards/timoshenko-medal
Stockholm Water Prize
http://www.siwi.org/prizes/stockholmwaterprize/
Andreas Acrivos Award for Professional Progress in Chemical Engineering
https://www.aiche.org/community/awards/andreas-acrivos-award- professional-progress-chemical-engineering
IEEE Medal of Honor
http://www.ieee.org/about/awards/medals/medalofhonor.html
IEEE Edison Medal
http://www.ieee.org/about/awards/medals/edison.html
MRS Medal Award
http://www.mrs.org/medal/
Von Hippel Award
http://www.mrs.org/vonhippel/
Pritzker Distinguished Lectureship Award
http://www.bmes.org/awards#Pritzker Distinguished Lecture Award
George S. Axelby Outstanding Best Paper Award
http://www.ieeecss.org/awards/george-s-axelby-outstanding-paper-award
IEEE Control Systems Award
https://www.ieee.org/about/awards/tfas/controlsys.html
IEEE Robotics and Automation Award
https://www.ieee.org/about/awards/tfas/robotauto.html
Lasker~DeBakey Clinical Medical Research Award
http://www.laskerfoundation.org/awards/#name=&award=Clinical&year=
IADR Distinguished Scientist Award
http://www.iadr.org/IADR/Awards/Grants-Awards/Distinguished- Scientist
COPSS Presidents' Award
http://community.amstat.org/copss/home

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