24 citations · 79 across the 41 of their papers we have counts for
8 papers · 2 filters
Can Technology Life-Cycles Be Indicated by Diversity in Patent Classifications? The crucial role of variety
Loet Leydesdorff
In a previous study of patent classifications in nine material technologies for photovoltaic cells, Leydesdorff et al. (2015) reported cyclical patterns in the longitudinal develop…
The Generation of Large Networks from Web-of-Science Data
Loet Leydesdorff, Gohar Feroz Khan, Lutz Bornmann
During the 1990s, one of us developed a series of freeware routines (http://www.leydesdorff.net/indicators) that enable the user to organize downloads from the Web-of-Science (Thom…
The Operationalization of "Fields" as WoS Subject Categories (WCs) in Evaluative Bibliometrics: The cases of "Library and Information Science" and "Science & Technology Studies"
Loet Leydesdorff, Lutz Bornmann
Normalization of citation scores using reference sets based on Web-of-Science Subject Categories (WCs) has become an established ("best") practice in evaluative bibliometrics. For…
Matching MEDLINE/PubMed Data with Web of Science (WoS): A Routine in R language
Daniele Rotolo, Loet Leydesdorff
We present a novel routine, namely medlineR, based on R-language, that enables the user to match data from MEDLINE/PubMed with records indexed in the ISI Web of Science (WoS) datab…
The European Union, China, and the United States in the Top-1% and Top-10% Layers of Most-Frequently-Cited Publications: Competition and Collaborations
Loet Leydesdorff, Caroline S. Wagner, Lutz Bornmann
The percentages of shares of world publications of the European Union and its member states, China, and the United States have been represented differently as a result of using dif…
BRICS countries and scientific excellence: A bibliometric analysis of most frequently-cited papers
Lutz Bornmann, Caroline Wagner, Loet Leydesdorff
The BRICS countries (Brazil, Russia, India, and China, and South Africa) are noted for their increasing participation in science and technology. The governments of these countries…