June 6, 2012
To date we have been posting brief scientometric tables of universities and national research agencies. to expand our analysis, the current post is devoted to Private Companies as scientific agents, so we´ll lead the spotlight to the World’s Major Companies and their research performance outputs. We are going to consider the Top 100 scientific producers and show their indicators related to scientific impact, international collaboration, ability to put their papers in top journals, specialization rate and excellence output.
The research activity carried out at big companies is concentrated in Northen America and Western Europe –44 in Northern America and 36 in Western Europe among the Top 100–. The list shows a prominent bias in the Activity Sector as well: most of the selected companies belong to ICT(46), PHARMACEUTICAL (26) or ENERGETIC (14)
The following table contains some key scientometric indicators of these companies based on SCOPUS data during the period 2003-2010:
The indicators included in the table are the following:
The number of scientific papers published in scholarly journals reveals the ability of an institution to create scientific knowledge. In co-authored publications, a score is assigned to each contributing institution through the author’s institutional address.
It shows the ability of institutions to create international research links through the output ratio that has been produced in collaboration with foreign institutions. The values are computed by analyzing the institution’s output whose affiliations include more than one country address.
Normalized Impact scores indicate the scientific impact that institutions have over the scientific community. In order to obtain a fair measurement of impact, the calculation removes the influence due to institutions’ size and research profile making it ideal for comparing research performance. Normalized Impact values show the ratio between the average scientific impact of an institution and the world average impact of publications of the same time frame, document type and subject category. The values are expressed in percentages and show the relationship of the institution’s average impact to the world average, which is 1, –i.e. a score of 0.8 means the institution is cited 20% below world average and 1.3 means the institution is cited 30% above world average. Normalized Impact is computed using the methodology established by the Karolinska Intitutet in Sweden where it is named “Item oriented field normalized citation score average”. The long name used is because the normalization of the citation values is done on an individual article level. Further information on the methodology at Bibliometric Handbook for Karolinska Institutet .
High Quality Publications Q1
Ratio of publications that an institution publishes in the world most influential scholarly journals. Journals considered for this indicator are those ranked in the first quartile (25%) in their categories as ordered by SCImago Journal Rank SJR indicator.
The Specialization Rate 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.
The Excellence indicates the number of papers an institution included into the set formed by the 10% of the most cited papers in their respective scientific fields. It is a measure of high quality output of research institutions.
Number of research papers where the author of the company is the main contributor, selected as paper’s corresponding author which is expected to be in most cases the leader resarcher.