"The following variables were chosen based on a review of
previous literature, as well as data availability for:
intramural R&D expenditure in Euro per capita in
the higher education sector,
business enterprise sector, and government sector;
total R&D personnel
and researchers as a percentage of total employment in full-time equivalent work in the higher
education sector,
business enterprise sector, and government sector;
number of scientific journal
ranking (SJR) publications per million habitants;
patent applications to the European patent office
(EPO) per million habitants;
percentage of high-tech exports out of the total exports in the higher
education sector, business enterprise sector, and government sector"
Check ranking in Table A2 https://www.mdpi.com/2071-1050/12/4/1432
