The dynamic characteristic of a topic can be reflected by the substantial increase of citation times of literature.
Table 5 The five most cited papers in the "small business" cluster Citation times Literatures 54 Hotho S (2011) 50 Huang KH (2011) 48 Goktan AB (2011) 39 Naranjo-valencia (2011) 29 Lee SM (2012).
Table 4 The five most cited papers in the "open source" cluster Citation times References 72 Chesbrough H (2006) 64 Laursen K (2006) 60 Hair JF (2006) 59 Bonaccorsi A (2006) 52 Chesbrough H (2006).
The average global citation score (AGCS) is the mean value of TGCS, which also indicates the average citation times of articles in HSR areas.
The 10 highly-cited journals (totally 3584 journals) were selected due to more than 1179 citation times, including 3 for Virology and 4 for comprehensive journals (Table 8).
In addition, USA and American institutions ranked the first in health system research productivity, with high citation times, followed by the UK and Canada.
Solid borders of the figure show the distribution of main clusters of business model innovation, and the different colors of the lines reflect the co-citation time of literature.
Both analyses were adjusted for citation-time (the time period during which the study could have been cited).
After controlling for citation-time, we found that each 10% increase in reported excess risk was associated with 16.5 (95% CI: 7.9, 25.0) additional citations in Scopus (P = 0.001, adjusted R = 0.69) and 12.4 (95% CI: 1.1, 23.7) additional citations in Web-of-Science (P = 0.03, adjusted R = 0.31).
After their identification, the top 34 most-cited articles were subjected to co-citation cluster analysis according to their co-citation times in one paper.
In our case studies, we applied a citation impact time window of 24 36 months after publication of each research paper.
