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bibliometric method, which is the only feasible approach at the experimental level. The literature does not seem to offer contributions useful for this purpose: scholars seem more focused on studies related to modeling citation age and mainly on comparing two
. The more accurate procedure would be to calculate the actual age of the journal based on its first publication year. 1 But the WoS does not provide this information and thus, we would have to gather this information manually for each journal. 2 Since
current year (contemporary h -index), reducing the effects of co-authorship (individual h -index), and adjusting the number of citations by the age of each publication (age-weighted citation rate). Some scholars posit that these metrics are complementary
. Data analysis To uncover research patterns and trends in Korea LIS research, the publication data were analyzed by year, author, affiliation and journal. 159 LIS professors in the study were examined by age and institution where they received
Publication productivity among scientists: A critical review Social Studies of Science 13 285 – 305 . Kyvik , S. 1990 Age
researchers, as defined by their professional age (the number of years since dissertation), has been shown to have mixed effects on citation rates. Within the discipline of dendrochronology, senior researchers were cited more frequently than their junior
to cite a greater fraction of newer literature (Cawkell 1976 ). On the contrary, due to the transactive nature of searching in the second model, one would expect the age distribution of cited documents to be more uniform over history and thereby the
of science are they coming?) and to study their key features such as career age. Emerging areas cite highly interdisciplinary references It is assumed that papers in a new research area cite papers from many areas
areas. The question of when such a field is considered “new emerging” is not only related to its “age” but also to the time when it's literature has reached a critical mass, which is necessary to exist as and to be recognised as a independent and self
, the time limitation of IF—whether of 2 or 5 years—makes it virtually impossible to obtain a valid sample. In their study of the ageing of scientific journals and impact factors, Moed, Van Leeuwen, and Reeduk ( 1998 ) found that the 2-year impact factor
