Suchergebnisse - "Bornmann, Lutz"

Do altmetrics point to the broader impact of research? An overview of benefits and disadvantages of altmetrics von Bornmann, Lutz

“… •Alternative metrics (altmetrics) are considered an interesting option for measuring broader impact of research.•Altmetrics is a term to describe web-based …”
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Growth rates of modern science: A bibliometric analysis based on the number of publications and cited references von Bornmann, Lutz, Mutz, Rüdiger

“… Many studies (in information science) have looked at the growth of science. In this study, we reexamine the question of the growth of science. To do this we …”
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What do citation counts measure? An updated review of studies on citations in scientific documents published between 2006 and 2018 von Tahamtan, Iman, Bornmann, Lutz

“… The purpose of this paper is to update the review of Bornmann and Daniel (J Doc 64(1):45–80, 2008 ) presenting a narrative review of studies on citations in …”
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Heat waves: a hot topic in climate change research von Marx, Werner, Haunschild, Robin, Bornmann, Lutz

“… Research on heat waves (periods of excessively hot weather, which may be accompanied by high humidity) is a newly emerging research topic within the field of …”
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Do altmetrics correlate with the quality of papers? A large-scale empirical study based on F1000Prime data von Bornmann, Lutz, Haunschild, Robin

“… In this study, we address the question whether (and to what extent, respectively) altmetrics are related to the scientific quality of papers (as measured by …”
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An evaluation of percentile measures of citation impact, and a proposal for making them better von Bornmann, Lutz, Williams, Richard

“… Percentiles are statistics pointing to the standing of a paper’s citation impact relative to other papers in a given citation distribution. Percentile Ranks ( …”
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Scientometrics in a changing research landscape von Bornmann, Lutz, Leydesdorff, Loet

“… Bibliometrics has become an integral component of quality assessment for science and funding decisions. The next challenge for scientometrics is to develop …”
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Growth rates of modern science: a latent piecewise growth curve approach to model publication numbers from established and new literature databases von Bornmann, Lutz, Haunschild, Robin, Mutz, Rüdiger

“… Growth of science is a prevalent issue in science of science studies. In recent years, two new bibliographic databases have been introduced, which can be used …”
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Bibliometrics-based decision tree (BBDT) for deciding whether two universities in the Leiden ranking differ substantially in their performance von Bornmann, Lutz

“… Fast-and-frugal heuristics are simple judgement strategies that are based on only a few predictor variables. Bornmann and Marewski (Scientometrics …”
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Reference publication year spectroscopy (RPYS) in practice: a software tutorial von Haunschild, Robin, Bornmann, Lutz

“… In course of the organization of Workshop III entitled “Cited References Analysis Using CRExplorer” at the International Conference of the International …”
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Can tweets be used to detect problems early with scientific papers? A case study of three retracted COVID-19/SARS-CoV-2 papers von Haunschild, Robin, Bornmann, Lutz

“… Methodological mistakes, data errors, and scientific misconduct are considered prevalent problems in science that are often difficult to detect. In this study, …”
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Climate Change Research in View of Bibliometrics von Haunschild, Robin, Bornmann, Lutz, Marx, Werner

“… This bibliometric study of a large publication set dealing with research on climate change aims at mapping the relevant literature from a bibliometric …”
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Core elements in the process of citing publications: Conceptual overview of the literature von Tahamtan, Iman, Bornmann, Lutz

“… [Display omitted] •We provide a conceptual overview of the literature on the process of citing publications.•The overview presents the results of studies …”
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The use of OpenAlex to produce meaningful bibliometric global overlay maps of science on the individual, institutional, and national levels von Haunschild, Robin, Bornmann, Lutz

“… The Social Systems Citations Theory (SSCT) is the most recent theory of citations integrating previous theories. It focuses on communications in science that …”
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Policy documents as sources for measuring societal impact: how often is climate change research mentioned in policy-related documents? von Bornmann, Lutz, Haunschild, Robin, Marx, Werner

“… In the current UK Research Excellence Framework (REF) and the Excellence in Research for Australia (ERA), societal impact measurements are inherent parts of …”
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How can citation impact in bibliometrics be normalized? A new approach combining citing-side normalization and citation percentiles von Bornmann, Lutz

“… Since the 1980s, many different methods have been proposed to field-normalize citations. In this study, an approach is introduced that combines two previously …”
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Are quality assessments in science affected by anchoring effects? – Empirical results from a survey of authors assessing previously cited papers von Bornmann, Lutz, Ganser, Christian

“… Many studies have investigated anchoring effects. Anchoring occurs when initial values are used by humans as starting points in assessments. We investigated …”
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Professional and citizen bibliometrics: complementarities and ambivalences in the development and use of indicators—a state-of-the-art report von Leydesdorff, Loet, Wouters, Paul, Bornmann, Lutz

“… Bibliometric indicators such as journal impact factors, h -indices, and total citation counts are algorithmic artifacts that can be used in research evaluation …”
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Relevance of document types in the scores’ calculation of a specific field-normalized indicator: Are the scores strongly dependent on or nearly independent of the document type handling? von Haunschild, Robin, Bornmann, Lutz

“… Although it is bibliometric standard to employ field normalization, the detailed procedure of field normalization is not standardized regarding the handling of …”
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Normalisation of citation impact in economics von Bornmann, Lutz, Wohlrabe, Klaus

“… This study is intended to facilitate fair research evaluations in economics. Field- and time-normalisation of citation impact is the standard method in …”
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