To explore how well knowledge was integrated across the disciplines, the researchers also studied the journal articles that were cited in the nanopapers. They found more than one million cited references, a mean of 33 per paper.
Using text mining techniques to extract sources from the cited references, they further found that 45 subject categories were cited by five percent or more of the nanopapers and 98 categories that were cited by at least one percent of the papers. The text mining was done using VantagePoint software developed by Georgia Tech and Search Technology Inc.
Six subject categories dominated both the original nanopapers and the cited references. Each of the six contained 10 percent or more of the original nanopapers and was cited by 39 percent or more of the references. They are:
The researchers found considerable interdisciplinary representation within those six categories. Though 86 percent of the 3,863 nanopapers in the "nanoscience and nanotechnology" category cited papers in materials science, another 80 subject categories had 40 or more cited papers each.
This representation continued even outside the top six categories. The 808 nanopapers in electrical engineering cited papers in journals from 138 different subject categories, while the 435 nanopapers in organic chemistry cited papers in journals from 140 different subject categories.
The researchers also used a metric they called an "integration score" to gauge how interdisciplinary nature of a particular paper
|Contact: John Toon|
Georgia Institute of Technology Research News