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3,972 Child 304 Male 3,902 Aged, 80 and over 270
, countries, languages and kinds of papers; the number of citations of each paper in the first 5 years after publication; the first-cited age of the paper, which is the time interval between paper's publication year and its first citation year; and the first
are. One potential treatment of this problem is to introduce some artificial ageing of publications to reduce the rate at which older publications are cited. Yu et al. ( 2009 ) modified the standard attachment kernel by including an exponential
mentioned, Thomson Reuters finally added the 5 years window. The citation obsolescence issue (“aging”) is a classics in scientometrics and its variation across fields pleads for a disciplinary modulation of the citation window (Vanclay 2009 ; Vieira and
, have differing research interests, and various levels of institutional and peer support. Trainee physicians may be highly motivated to succeed in their field of interest but as a consequence of their young ‘research age’ they may have few scientific
and forename, decisions were made based on other information such as their place of work, job position and age. Teachers whose surnames had apparently changed through marriage were connected manually. Various other processes were performed to
avPRI*IF Average product of PRI* by journal IF (per author) 14 sumC/y Sum of age-corrected citations (per author
example, there have been variations of the h-index that take into account: (a) the total number of citations included in the Hirsch-core (A-index, R-index) (Jin et al. 2007 ), (b) the age of the publications included in the Hirsch-core (AR-index) (Jin et
age where online databases abound and almost all knowledge is electronically cross-referenced, it is important to recognise that pioneering bibliometricians operated in a considerably more basic environment. Personal computers did not exist, and as a
economy. 10 Perez ( 2002 ) demonstrated five series of Kondratieff waves: the industrial revolution (1771), the age of steam and railways (1829), the age of steel, electricity and heavy engineering (1875), the age of oil