Comprehensive mapping of local and diaspora scientists: A database and analysis of 63,951 Greek scientists

Abstract Research policy and planning for a given country may benefit from reliable data on both its scientific workforce as well as the diaspora of scientists for countries with a substantial brain drain. Here we use a systematic approach using Scopus to generate a comprehensive country-level database of all scientists in Greece. Moreover, we expand that database to include also Greek diaspora scientists. The database that we have compiled includes 63,951 scientists who have published at least five papers indexed in Scopus. Of those, 35,116 have an affiliation in Greece. We validate the sensitivity and specificity of the database against different control sets of scientists. We also analyze the scientific disciplines of these scientists according to the Science Metrix classification (174 subfield disciplines) and provide detailed data on each of the 63,951 scientists using multiple citation indicators and a composite thereof. These analyses demonstrate differential concentrations in specific subfields for the local versus the diaspora cohorts, as well as an advantage of the diaspora cohort in terms of citation indicators, especially among top-impact researchers. The approach that we have taken can also be applied to map the scientific workforce of other countries and nations for evaluation, planning, and policy purposes.

[1]  A. Prskawetz,et al.  A brain gain with a brain drain. , 1997, Economics letters.

[2]  V. Trachana.  Austerity-led brain drain is killing Greek science , 2013, Nature.

[3]  Tolga Yuret,et al.  An analysis of the foreign-educated elite academics in the United States , 2017, J. Informetrics.

[4]  C. Wagner,et al.  Open countries have strong science , 2017, Nature.

[5]  Alexander M. Petersen,et al.  Quantifying the negative impact of brain drain on the integration of European science , 2017, Science Advances.

[6]  Xiang Zhang,et al.  Character-level Convolutional Networks for Text Classification , 2015, NIPS.

[7]  Éric Archambault,et al.  Towards a Multilingual, Comprehensive and Open Scientific Journal Ontology , 2013 .

[8]  Paul Wouters,et al.  Evaluation practices and effects of indicator use : a literature review , 2016 .

[9]  Sally Davenport.  Panic and panacea: brain drain and science and technology human capital policy , 2004 .

[10]  Vincent Larivière,et al.  The many faces of mobility: Using bibliometric data to measure the movement of scientists , 2018, J. Informetrics.

[11]  John P A Ioannidis,et al.  Global estimates of high‐level brain drain and deficit , 2004, FASEB journal : official publication of the Federation of American Societies for Experimental Biology.

[12]  Henk F. Moed,et al.  UK Research Assessment Exercises: Informed judgments on research quality or quantity? , 2008, Scientometrics.

[13]  Henk F. Moed,et al.  Researchers’ Mobility, Productivity and Impact: Case of Top Producing Authors in Seven Disciplines , 2016 .

[14]  Grégoire Côté,et al.  Scopus as a curated, high-quality bibliometric data source for academic research in quantitative science studies , 2020, Quantitative Science Studies.

[15]  Jian Wang,et al.  Bias Against Novelty in Science: A Cautionary Tale for Users of Bibliometric Indicators , 2015 .

[16]  A. Argyriou,et al.  Physicians' brain drain in Greece: a perspective on the reasons why and how to address it. , 2014, Health policy.

[17]  Alexander M. Petersen,et al.  Multiscale impact of researcher mobility , 2018, Journal of The Royal Society Interface.

[18]  J. Ioannidis,et al.  Updated science-wide author databases of standardized citation indicators , 2020, PLoS biology.

[19]  Kevin W Boyack,et al.  A standardized citation metrics author database annotated for scientific field , 2019, PLoS biology.

[20]  S. Rijcke,et al.  Bibliometrics: The Leiden Manifesto for research metrics , 2015, Nature.

[21]  D. Theodoropoulos,et al.  "Brain Drain" Phenomenon in Greece: Young Greek scientists on their Way to Immigration, in an era of “crisis”. Attitudes, Opinions and Beliefs towards the Prospect of Migration , 2014 .

[22]  Ludo Waltman,et al.  A review of the literature on citation impact indicators , 2015, J. Informetrics.