Author/Authors :
Frank Havemann، نويسنده , , Michael Heinz، نويسنده , , and Roland Wagner-D?bler، نويسنده ,
Abstract :
In the study of growth dynamics of artificial and natural
systems, the scaling properties of fluctuations can exhibit
information on the underlying processes responsible
for the observed macroscopic behavior according to
H.E. Stanley and colleagues (Lee, Amaral, Canning,
Meyer, & Stanley, 1998; Plerou, Amaral, Gopikrishnan,
Meyer, & Stanley, 1999; Stanley et al., 1996). With such
an approach, they examined the growth dynamics of
firms, of national economies, and of university research
fundings and paper output. We investigated the scaling
properties of journal output and impact according to the
Journal Citation Reports (JCR; ISI, Philadelphia, PA) and
find distributions of paper output and of citations near
to lognormality. Growth rate distributions are near to
Laplace “tents,” however with a better fit to Subbotin
distributions. The width of fluctuations decays with size
according to a power law. The form of growth rate distributions
seems not to depend on journal size, and conditional
probability densities of the growth rates can thus
be scaled onto one graph. To some extent even quantitatively,
all our results are in agreement with the observations
of Stanley and others. Further on, a Matthew effect
of journal citations is confirmed. If journals “behave”
like business firms, a better understanding of Bradford’s
Law as a result of competition among publishing
houses, journals, and topics suggests itself