5.5 Major fields of science

Identifying the fields of research where Greek research teams published most in open access DOAJ/Gold journals, Greek publications were classified into the six major fields of science “Natural Sciences”, “Engineering & Technology”, “Medical & Health Sciences”, “Agricultural Sciences”, “Social Sciences” and “Humanities” and their subcategories, according to the “Revised Field of Science and Technology Classification” (Frascati Manual). The results of this classification corresponding to the entire period between 2004-2018, are presented in Figure 5.5.1.

“Natural Sciences” receive Greece’s highest representation in the total number of open access publications (54.8%) in 2018. “Medical & Health Sciences” stands second (35.6%), followed by “Engineering and Technology” (16.4%). The remaining share of Greek publications was distributed among “Social Sciences”, “Agricultural Sciences”, and “Humanities”. As mentioned in section 2, even though “Humanities” is a significant field of national research, low shares of publications is to be expected, since scientific production in the field is overwhelmed by monographs and books, as well as them being written in other languages (non-English). These publications are not recorded in the standard bibliometric databases.

Figure 5.5.1


Figure 5.5.2 tracks the number of Greek open access publications in the subcategories of the six major fields of science. Data refer to the most recent 5-year period, 2014-2018.

Figure 5.5.2


Figure 5.5.3 presents the “field-normalised citation score” of Greek open access publications for the 5-year period 2014-2018 in the six major fields of science. This indicator is the ratio of the average number of citations received by Greek open access publications to the world average of citations of the same time period and scientific subject field. The normalisation was carried out at the level of each article/publication according to the Web of Science scientific subject fields. In the case of a publication being attributed to more than one subject field, a mean value of the fields was calculated. The field-normalised citation score or “citation score” was calculated using software developed by EKT. A value greater than 1 indicates that the impact of Greek publications is higher than the world average.

For the period 2014-2018, Greek publications surpassed the world average in “Natural Sciences”“Humanities”, “Social Sciences” and “Medical & Health Sciences” displaying citation scores from 1.70 to 1,01.  

Figure 5.5.3


Figure 5.5.4 breaks down the main six fields of science into specialized thematic areas, areas in which Greek open access publications display relative citation scores greater than the world average.

Figure 5.5.4


Figure 5.5.5 presents an activity index of fields of science and specialized thematic areas of the Greek open access publications in the form of a bi-dimensional location of strong versus weak-performing thematic areas. The index compares the Greek production to the world performance in a ranking from -100 to +100. 0 indicates absolute balance, while positive scores indicate greater Greek production and negative scores indicate the opposite. Broken in four squares, the following four combinations are represented: low activity-high impact, high activity-high impact, low activity-low impact, high activity-low impact.

Indicatively, in the high activity-high impact category, the thematic areas “Meteorology & Atmospheric Sciences” and “Environmental Sciences” -belonging to “Natural Sciences” field of science- record the highest relative citation score (1.90 και 1.92), with an activity index of 91.98 and 41.17.

Figure 5.5.5


The citation scores of Greek publications in open access DOAJ/Gold journals, across the six major fields of science, for all institution categories appear in Figure 5.5.6. The Figure also displays the number of publications and citations. Data refers to the most recent 5-year period, 2014-2018.


Figure 5.5.6




The field-normalised citation score was calculated only for Research Centers with more than 75 publications for the period 1996-2010, which is more than 5 publications per year.