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Plots for visualizing paper impact and journal impact of single researchers in a single graph

In research evaluation of single researchers, the assessment of paper and journal impact is of interest. High journal impact reflects the ability of researchers to convince strict reviewers, and high paper impact reflects the usefulness of papers for future research. In many bibliometric studies, metrics for journal and paper impact are separately presented. In this paper, we...

Discontinuities in citation relations among journals: self-organized criticality as a model of scientific revolutions and change

Using 3-year moving averages of the complete Journal Citation Reports 1994–2016 of the Science Citation Index and the Social Sciences Citation Index (combined), we analyze links between citing and cited journals in terms of (1) whether discontinuities among the networks of consecutive years have occurred; (2) are these discontinuities relatively isolated or networked? (3) Can...

The geography of references in elite articles: Which countries contribute to the archives of knowledge?

: Lutz Bornmann, Caroline Wagner, Loet Leydesdorff. Data curation: Lutz Bornmann. Formal analysis: Lutz Bornmann. Investigation: Lutz Bornmann. Methodology: Lutz Bornmann. Writing ± original draft ... : Lutz Bornmann, Loet Leydesdorff. Writing ± review & editing: Caroline Wagner, Loet Leydesdorff. 12 / 14 13 / 14 1. Cole JR , Cole S . Social Stratification in Science. Chicago/ London: University of

Identifying single influential publications in a research field: new analysis opportunities of the CRExplorer

Reference Publication Year Spectroscopy (RPYS) has been developed for identifying the cited references (CRs) with the greatest influence in a given paper set (mostly sets of papers on certain topics or fields). The program CRExplorer (see www.crexplorer.net) was specifically developed by Thor et al. (J Informetr 10:503–515, 2016a; Scientometrics 109:2049–2051, 2016b) for applying...

Reference publication year spectroscopy (RPYS) of Eugene Garfield’s publications

Which studies, theories, and ideas have influenced Eugene Garfield’s scientific work? Recently, the method reference publication year spectroscopy (RPYS) has been introduced, which can be used to answer this and related questions. Since then, several studies have been published dealing with the historical roots of research fields and scientists. The program CRExplorer (http...

Visualizing the context of citations referencing papers published by Eugene Garfield: a new type of keyword co-occurrence analysis

During Eugene Garfield’s (EG’s) lengthy career as information scientist, he published about 1500 papers. In this study, we use the impressive oeuvre of EG to introduce a new type of bibliometric networks: keyword co-occurrences networks based on the context of citations, which are referenced in a certain paper set (here: the papers published by EG). The citation context is...

Betweenness and diversity in journal citation networks as measures of interdisciplinarity—A tribute to Eugene Garfield

Journals were central to Eugene Garfield’s research interests. Among other things, journals are considered as units of analysis for bibliographic databases such as the Web of Science and Scopus. In addition to providing a basis for disciplinary classifications of journals, journal citation patterns span networks across boundaries to variable extents. Using betweenness centrality...

How many scientific papers are mentioned in policy-related documents? An empirical investigation using Web of Science and Altmetric data

In this short communication, we provide an overview of a relatively newly provided source of altmetrics data which could possibly be used for societal impact measurements in scientometrics. Recently, Altmetric—a start-up providing publication level metrics—started to make data for publications available which have been mentioned in policy-related documents. Using data from...

Does evaluative scientometrics lose its main focus on scientific quality by the new orientation towards societal impact?

When the meaning of key terms is incompatible in competing taxonomies, a revolution might occur in the field by which the established taxonomy is replaced with another. Since the key term “impact” in scientometrics seems to undergo a taxonomic change, a revolution might be taking place at present: Impact is no longer defined as impact on science alone (measured by citations), but...

Does evaluative scientometrics lose its main focus on scientific quality by the new orientation towards societal impact?

When the meaning of key terms is incompatible in competing taxonomies, a revolution might occur in the field by which the established taxonomy is replaced with another. Since the key term “impact” in scientometrics seems to undergo a taxonomic change, a revolution might be taking place at present: Impact is no longer defined as impact on science alone (measured by citations), but...

Sequence analysis of annually normalized citation counts: an empirical analysis based on the characteristic scores and scales (CSS) method

In bibliometrics, only a few publications have focused on the citation histories of publications, where the citations for each citing year are assessed. In this study, therefore, annual categories of field- and time-normalized citation scores (based on the characteristic scores and scales method: 0 = poorly cited, 1 = fairly cited, 2 = remarkably cited, and 3 = outstandingly...

Is the promotion of research reflected in bibliometric data? A network analysis of highly cited papers on the Clusters of Excellence supported under the Excellence Initiative in Germany

Germany Lutz Bornmann 0 0 Cluster of Excellence Under the Excellence Initiative, a number of Clusters of Excellence in Germany have been supported since 2006 and 2007-including each a limited number of ... - Introduction & Lutz Bornmann Evaluation of the Excellence Initiative Data on the Clusters of Excellence in the Excellence Initiative In this study, the analysis only covered Clusters of Excellence (or

Measuring impact in research evaluations: a thorough discussion of methods for, effects of and problems with impact measurements

Impact of science is one of the most important topics in scientometrics. Recent developments show a fundamental change in impact measurements from impact on science to impact on society. Since impact measurement is currently in a state of far reaching changes, this paper describes recent developments and facing problems in this area. For that, the results of key publications...

Change of perspective: bibliometrics from the point of view of cited references—a literature overview on approaches to the evaluation of cited references in bibliometrics

Bornmann 0 1 0 Division for Science and Innovation Studies, Administrative Headquarters of the Max Planck Society , Hofgartenstr. 8, 80539 Munich , Germany 1 Max Planck Institute for Solid State Research

Slow reception and under-citedness in climate change research: A case study of Charles David Keeling, discoverer of the risk of global warming

The Keeling curve has become a chemical landmark, whereas the papers by Charles David Keeling about the underlying carbon dioxide measurements are not cited as often as can be expected against the backdrop of his final approval. In this bibliometric study, we analyze Keeling’s papers as a case study for under-citedness of climate change publications. Three possible reasons for...

Generating clustered journal maps: an automated system for hierarchical classification

Journal maps and classifications for 11,359 journals listed in the combined Journal Citation Reports 2015 of the Science and Social Sciences Citation Indexes are provided at https://​leydesdorff.​github.​io/​journals/​ and http://​www.​leydesdorff.​net/​jcr15. A routine using VOSviewer for integrating the journal mapping and their hierarchical clusterings is also made available...

How to normalize Twitter counts? A first attempt based on journals in the Twitter Index

One possible way of measuring the broad impact of research (societal impact) quantitatively is the use of alternative metrics (altmetrics). An important source of altmetrics is Twitter, which is a popular microblogging service. In bibliometrics, it is standard to normalize citations for cross-field comparisons. This study deals with the normalization of Twitter counts (TC). The...

Professional and citizen bibliometrics: complementarities and ambivalences in the development and use of indicators—a state-of-the-art report

Bibliometric indicators such as journal impact factors, h-indices, and total citation counts are algorithmic artifacts that can be used in research evaluation and management. These artifacts have no meaning by themselves, but receive their meaning from attributions in institutional practices. We distinguish four main stakeholders in these practices: (1) producers of bibliometric...

Policy documents as sources for measuring societal impact: how often is climate change research mentioned in policy-related documents?

In the current UK Research Excellence Framework (REF) and the Excellence in Research for Australia (ERA), societal impact measurements are inherent parts of the national evaluation systems. In this study, we deal with a relatively new form of societal impact measurements. Recently, Altmetric—a start-up providing publication level metrics—started to make data for publications...

Climate Change Research in View of Bibliometrics

This bibliometric study of a large publication set dealing with research on climate change aims at mapping the relevant literature from a bibliometric perspective and presents a multitude of quantitative data: (1) The growth of the overall publication output as well as (2) of some major subfields, (3) the contributing journals and countries as well as their citation impact, and...