Error message

  • Notice: Undefined variable: _SESSION in tracking_init() (line 27 of C:\xampp\htdocs\rsds\sites\all\modules\rsds\tracking\tracking.module).
  • Warning: file_get_contents(http://user-agent-string.info/rpc/get_data.php?key=free&format=ini&ver=y): failed to open stream: HTTP request failed! HTTP/1.1 404 Not Found in UASparser->get_contents() (line 247 of C:\xampp\htdocs\rsds\sites\all\modules\rsds\tracking\UASparser\UASparser.php).
  • Warning: file_get_contents(http://user-agent-string.info/rpc/get_data.php?key=free&format=ini): failed to open stream: HTTP request failed! HTTP/1.1 404 Not Found in UASparser->get_contents() (line 247 of C:\xampp\htdocs\rsds\sites\all\modules\rsds\tracking\UASparser\UASparser.php).

STATISTICS FOR THE ROUGH SET DATABASE SYSTEM


The data record for a given five-year period
(integer numbers denote hundreds)

In years 1981-19851986-19901991-19951996-20002001-20052006-2010
Number of publications 34854659601403850
Number of authors 124521652911051003
The average: publication/author 42.963.593.422.692
Standard deviation: publication/author 4.933.46.727.116.493.45
The average: authors/publications 0.410.560.670.881.121.36
Standard deviation: authors/publication 3.662.543.092.782.031.51
Percentage share of publications with n coauthors
absence of authors (a publication under edition)0%2.35%6.02%5.52%7.06%3.65%
n=070.59%54.12%44.52%37.92%27.73%21.29%
n=120.59%32.94%34.19%31.98%30.58%33.76%
n=25.88%7.06%9.25%15.52%21.88%26.12%
n>22.94%3.53%6.02%9.06%12.76%15.18%
Number of authors sharing common publications;
their percentage share
12331774731039965
100%73.33%81.94%89.41%94.03%96.21%
The average: coauthors/author 2.171.962.262.763.043.19
The average: coauthors/author sharing a common publication 2.172.672.763.083.243.32