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The effects and their stability of field normalization baseline on relative performance with respect to citation impact: A case study of 20 natural science departments

Colliander, Cristian; Ahlgren, Per - In: Journal of Informetrics 5 (2011) 1, pp. 101-113

departments in terms of citation impact. Impact is studied under three baselines: journal, ISI/Thomson Reuters subject category … of normalization baseline matters. We observe that normalization against publishing journal is particular. The rankings … of the departments obtained when journal is used as baseline, irrespective of indicator, differ considerably from the …

Persistent link: https://www.econbiz.de/10010795192

Interactive overlays: A new method for generating global journal maps from Web-of-Science data

Leydesdorff, Loet; Rafols, Ismael - In: Journal of Informetrics 6 (2012) 2, pp. 318-332

approach focuses on the positions of journals in the multidimensional space spanned by the aggregated journal–journal citations …

Persistent link: https://www.econbiz.de/10010795212

Some comments on the journal weighted impact factor proposed by Habibzadeh and Yadollahie

Waltman, Ludo; Eck, Nees Jan van - In: Journal of Informetrics 2 (2008) 4, pp. 369-372

In a recent paper in the Journal of Informetrics, Habibzadeh and Yadollahie [Habibzadeh, F., & Yadollahie, M. (2008 …). Journal weighted impact factor: A proposal. Journal of Informetrics, 2(2), 164–172] propose a journal weighted impact factor … (WIF). Unlike the ordinary impact factor, the WIF of a journal takes into account the prestige or the influence of citing …

Persistent link: https://www.econbiz.de/10010795295

Regularity in the time-dependent distribution of the percentage of never-cited papers: An empirical pilot study based on the six journals

Hu, Zewen; Wu, Yishan - In: Journal of Informetrics 8 (2014) 1, pp. 136-146

-cited papers in each journal is very high. However, as the citation time window becomes wider and wider, the percentage of never … very large; (3) when applying the wider citation time windows, the percentage of never-cited papers for each journal begins …

Persistent link: https://www.econbiz.de/10011039486

Indicators of the interdisciplinarity of journals: Diversity, centrality, and citations

Leydesdorff, Loet; Rafols, Ismael - In: Journal of Informetrics 5 (2011) 1, pp. 87-100

A citation-based indicator for interdisciplinarity has been missing hitherto among the set of available journal … contained in the Journal Citation Reports of the (Social) Science Citation Index 2008. Betweenness centrality in symmetrical (1 …

Persistent link: https://www.econbiz.de/10011039490

Methods for the generation of normalized citation impact scores in bibliometrics: Which method best reflects the judgements of experts?

Bornmann, Lutz; Marx, Werner - In: Journal of Informetrics 9 (2015) 2, pp. 408-418

Evaluative bibliometrics compare the citation impact of researchers, research groups and institutions with each other …

Persistent link: https://www.econbiz.de/10011263137

Quantitative analysis of the Italian National Scientific Qualification

Marzolla, Moreno - In: Journal of Informetrics 9 (2015) 2, pp. 285-316

The Italian National Scientific Qualification (ASN) was introduced in 2010 as part of a major reform of the national university system. Under the new regulation, the scientific qualification for a specific role (associate or full professor) and field of study is required to apply for a permanent...

Persistent link: https://www.econbiz.de/10011263142

Validity of altmetrics data for measuring societal impact: A study using data from Altmetric and F1000Prime

Bornmann, Lutz - In: Journal of Informetrics 8 (2014) 4, pp. 935-950

Can altmetric data be validly used for the measurement of societal impact? The current study seeks to answer this question with a comprehensive dataset (about 100,000 records) from very disparate sources (F1000, Altmetric, and an in-house database based on Web of Science). In the F1000 peer...

Persistent link: https://www.econbiz.de/10011115858

Should the research performance of scientists be distinguished by gender?

Abramo, Giovanni; Cicero, Tindaro; D’Angelo, Ciriaco … - In: Journal of Informetrics 9 (2015) 1, pp. 25-38

The literature on gender differences in research performance seems to suggest a gap between men and women, where the former outperform the latter. Whether one agrees with the different factors proposed to explain the phenomenon, it is worthwhile to verify if comparing the performance within each...

Persistent link: https://www.econbiz.de/10011189263

Relationship between altmetric and bibliometric indicators across academic social sites: The case of CSIC's members

Ortega, José Luis - In: Journal of Informetrics 9 (2015) 1, pp. 39-49

This study explores the connections between social and usage metrics (altmetrics) and bibliometric indicators at the author level. It studies to what extent these indicators, gained from academic sites, can provide a proxy for research impact. Close to 10,000 author profiles belonging to the...

Persistent link: https://www.econbiz.de/10011189264