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Can technology life-cycles be indicated by diversity in patent classifications? The crucial role of variety
In a previous study of patent classifications in nine material technologies for photovoltaic cells, Leydesdorff et al. (Scientometrics 102(1):629–651, 2015) reported cyclical patterns in the longitudinal development of Rao–Stirling diversity. We suggested that these cyclical patterns can be used to...
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| Formato: | Online Artículo Texto |
| Lenguaje: | English |
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Springer Netherlands
2015
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| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4643114/ https://www.ncbi.nlm.nih.gov/pubmed/26594072 http://dx.doi.org/10.1007/s11192-015-1639-x |