Open Access

Aparna Basu, Roland Wagner Dobler

• The structure of disciplines can be mapped using citation and co-citation analysis, viz. author, journal and document co-citation. Citation provides an underlying cognitive link between papers, journals, and authors that goes towards defining the interconnectedness of areas of research in these maps. In a less structured context, cooccurrence of names of terrorist organizations in reports of terrorist violence in India has been used to draw a map of terrorist groups and linkages. Words in editorials of Science and Nature have been analyzed for content analysis. In this paper we have looked at a new measure of connectedness between research areas, namely, the migration of authors between subfields. Migration may be considered as an embodied knowledge flow that bridges some part of the cognitive gap between fields. Our hypothesis is that the rate of author migration will reflect cognitive similarity or affinity between disciplines. This is graphically shown to be reasonable above certainThe structure of disciplines can be mapped using citation and co-citation analysis, viz. author, journal and document co-citation. Citation provides an underlying cognitive link between papers, journals, and authors that goes towards defining the interconnectedness of areas of research in these maps. In a less structured context, cooccurrence of names of terrorist organizations in reports of terrorist violence in India has been used to draw a map of terrorist groups and linkages. Words in editorials of Science and Nature have been analyzed for content analysis. In this paper we have looked at a new measure of connectedness between research areas, namely, the migration of authors between subfields. Migration may be considered as an embodied knowledge flow that bridges some part of the cognitive gap between fields. Our hypothesis is that the rate of author migration will reflect cognitive similarity or affinity between disciplines. This is graphically shown to be reasonable above certain levels of migration for our data from Mathematical Reviews spanning 17 years (1959-1975). The interrelated structure of Mathematics is then mapped using migration data in the appropriate range. We find the map to be a good reflection of the disciplinary variation in the field of Mathematics.…