Can the Emergence of New Developments in the Techno-Sciences Be Indicated As "hot Spots" in Journal Maps?

Most documents in the Science Citation Index (Web of Science) contains a field with cited references (CR). One can measure the patent-intensity [N(PatRef)] of a paper or journal in terms of the absolute number of references to patents among these CRs, and the patent density [%(PatRef)] as a percentage over total number of references [N(Ref)]: %(PatRet)= 100 * N(PatRef)/N(Ref). New technology-oriented developments can be expected to lead to increases in patent-intensity in the fields affected. Both the patent-intensity [N(PatRef)] and patent-density [%(PatRef)] can be used to color or shade a journal map and/or a map based on Web-of-Science Subject Categories (WCs) for a series of years. The resulting maps can be used as base-maps for overlaying portfolios. The envisaged software will enable users to generate the overlays for any set of documents from WoS.