  One is inclined to conceptualize impact in terms of citations per
publication, and thus as an average. However, citation distributions are
skewed, and the average has the disadvantage that the number of publications is
used in the denominator. Using hundred percentiles, one can integrate the
normalized citation curve and develop an indicator that can be compared across
document sets because percentile ranks are defined at the article level. I
apply this indicator to the set of 58 journals in the ISI Subject Category of
"Nanoscience & nanotechnology," and rank journals, countries, cities, and
institutes using non-parametric statistics. The significance levels of results
can thus be indicated. The results are first compared with the ISI-Impact
Factors, but this Integrated Impact Indicator (I3) can be used with any set
downloaded from the (Social) Science Citation Index. The software is made
publicly available at the Internet. Visualization techniques are also specified
for evaluation by positioning institutes on Google Map overlays.
