National scientific facilities and their science impact on nonbiomedical research

1. 

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   Fig. 1.

   Master curve for science disciplines. The h index is calculated for nonbiomedical publications for 10 years over a 19-year span from 1980 to 1998. The data are cumulative, including increments of even years of data, starting with 1980, then 1980 plus 1982, and so on, up to and including data for all even years from 1980 to 1998. Overlaid are encompassing lines with slope 0.4. Although the universal law with exponent ≈0.4 works well for physics, chemistry, and astronomy, it works less well for engineering and mathematics, where a somewhat lower exponent of the order of 0.35 might be more appropriate. Note that all figures in this article are shown with two decades on the x axis, Number of Papers, for ease of comparison. Consequently, some scientific fields in this plot show <10 data points because the fields have either <1,000 papers or >100,000 papers in the given years.

   
   
2. 

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   Fig. 2.

   Master curve for a selection of top-ranked universities. The h index is calculated for nonbiomedical publications for the year 1980, 1980 plus 1982, and incrementing by even years through 1990. Template lines are carried over from Fig. 1. See SI Text and SI Table 7 for detailed methodology.

   
   
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   Fig. 3.

   Master curves for selected public universities. The most remarkable aspect of the impact index for these universities is the narrow dispersion of the curves and the impact indices, as shown in Table 3.

   
   
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   Fig. 4.

   Master curves for the even and odd years for Ohio State University. Note that although the two data sets have no overlapping publications, the two master curves track very closely.

   
   
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   Fig. 5.

   Master curves for five NASA science centers.

   
   
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   Fig. 6.

   Master curves for DOE national laboratories plus CERN.

   
   
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   Fig. 7.

   Master curves for certain NSF science facilities plus the STScI.

   
   
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   Fig. 8.

   Master curves for universities, shown together with curves for NASA and DOE.