-
Waltman, L.; Eck, N.J. van; Raan, A.F.J. van: Universality of citation distributions revisited (2012)
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Bornmann, L.; Marx, W.: Distributions instead of single numbers : percentiles and beam plots for the assessment of single researchers (2014)
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- Abstract
- Citations measure an aspect of scientific quality: the impact of publications (A.F.J. van Raan, 1996). Percentiles normalize the impact of papers with respect to their publication year and field without using the arithmetic average. They are suitable for visualizing the performance of a single scientist. Beam plots make it possible to present the distributions of percentiles in the different publication years combined with the medians from these percentiles within each year and across all years.
-
Waltman, L.; Calero-Medina, C.; Kosten, J.; Noyons, E.C.M.; Tijssen, R.J.W.; Eck, N.J. van; Leeuwen, T.N. van; Raan, A.F.J. van; Visser, M.S.; Wouters, P.: ¬The Leiden ranking 2011/2012 : data collection, indicators, and interpretation (2012)
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-
Costas, R.; Leeuwen, T.N. van; Raan, A.F.J. van: Is scientific literature subject to a 'Sell-By-Date'? : a general methodology to analyze the 'durability' of scientific documents (2010)
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-
Li, J.; Shi, D.: Sleeping beauties in genius work : when were they awakened? (2016)
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- Abstract
- "Genius work," proposed by Avramescu, refers to scientific articles whose citations grow exponentially in an extended period, for example, over 50 years. Such articles were defined as "sleeping beauties" by van Raan, who quantitatively studied the phenomenon of delayed recognition. However, the criteria adopted by van Raan at times are not applicable and may confer recognition prematurely. To revise such deficiencies, this paper proposes two new criteria, which are applicable (but not limited) to exponential citation curves. We searched for genius work among articles of Nobel Prize laureates during the period of 1901-2012 on the Web of Science, finding 25 articles of genius work out of 21,438 papers including 10 (by van Raan's criteria) sleeping beauties and 15 nonsleeping-beauties. By our new criteria, two findings were obtained through empirical analysis: (a) the awakening periods for genius work depend on the increase rate b in the exponential function, and (b) lower b leads to a longer sleeping period.
- Date
- 22. 1.2016 14:13:32
-
Heuvel, C. van den: Multidimensional classifications : past and future conceptualizations and visualizations (2012)
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- Content
- This paper is an adaptation and augmented version of a paper presented at the NASKO 2011 conference: Charles van den Heuvel. 2011. Multidimensional classifications: Past and future conceptualizations and visualizations. In Smiraglia, Richard P., ed. Proceedings from North American Symposium on Knowledge Organization, Vol. 3. Toronto, Canada, pp. 105-21. Vgl.: http://www.ergon-verlag.de/isko_ko/downloads/ko_39_2012_6_e.pdf.
- Date
- 22. 2.2013 11:31:25
-
Doorn, M. van; Polman, K.: From classification to thesaurus ... and back? : subject indexing tools at the library of the Afrika-Studiecentrum Leiden (2010)
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- Date
- 22. 7.2010 19:48:33
-
Hooland, S. van; Verborgh, R.; Wilde, M. De; Hercher, J.; Mannens, E.; Wa, R.Van de: Evaluating the success of vocabulary reconciliation for cultural heritage collections (2013)
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- Date
- 22. 3.2013 19:29:20
-
Besselaar, P. van den; Wagner, C,; Bornmann, L.: Correct assumptions? (2016)
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-
Hjoerland, B.: Does informetrics need a theory? : a rejoinder to professor anthony van raan (2017)
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-
Rijnsoever, F.J. van; Faber, J.; Brinkman, M.L.J.; Weele, M.A. van: User-producer interaction in Web site development : motives, modes, and misfits (2010)
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-
Eck, N.J. van; Waltman, L.; Dekker, R.; Berg, J. van den: ¬A comparison of two techniques for bibliometric mapping : multidimensional scaling and VOS (2010)
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-
Van der Veer Martens, B.; Fleet, C. van: Opening the black box of "relevance work" : a domain analysis (2012)
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-
Jonkers, K.; Derrick, G.E.: ¬The bibliometric bandwagon : characteristics of bibliometric articles outside the field literature (2012)
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- Abstract
- The controversial use of bibliometrics in scientific decision making has necessitated the need for researchers to remain informed and engaged about bibliometrics. Glänzel and Schoepflin () first raised the issue of bibliometric standards in bibliometric research and this concern has been echoed by several additional bibliometric researchers over time (Braun, ; Glänzel, ; Abbott, Cyranoski, Jones, Maher, Schiermeier, & Van Noorden, ; Lane, ; Nature, ; van Noorden, ; Wallin, ). We compare the characteristics of articles published within and outside the Library and Information Science (LIS) field, including the relative impact and the affiliation of the contributing authors. We find that although the visibility of bibliometric articles within LIS is higher, it is not significant. However, a statistically significant growth in the number of articles written by authors without a bibliometric affiliation was found. This article provides an independent empirical investigation of publication trends potentially underlying Glänzel and Schoepflin's () concerns regarding the misuse of bibliometric results, and the inaccurate dissemination of concepts, results, and methods outside of the bibliometric field.
-
Egghe, L.: On the relation between the association strength and other similarity measures (2010)
0.02
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- Abstract
- A graph in van Eck and Waltman [JASIST, 60(8), 2009, p. 1644], representing the relation between the association strength and the cosine, is partially explained as a sheaf of parabolas, each parabola being the functional relation between these similarity measures on the trajectories x*y=a, a constant. Based on earlier obtained relations between cosine and other similarity measures (e.g., Jaccard index), we can prove new relations between the association strength and these other measures.
-
Van der Veer Martens, B.: ¬The production of practice theories (2011)
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-
Trincardi, G.: Diese beiden Bilder sind identisch - und das Gehirn spielt dir einen Streich (2018)
0.02
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- Abstract
- Die Bilder sehen aus, als ob sie aus unterschiedlichen Winkeln aufgenommen wurden. Doch sie sind identisch, versprochen. Zwei Bilder einer Straße in Mexiko lassen weltweit Menschen an ihrem Verstand zweifeln. Beide Bilder zeigen eine ganz normale Straße, links sieht man eine Häuserwand, rechts oben im Bild einen weißen Van. Die Aufnahmen scheinen sich nur durch ihre Perspektive zu unterscheiden, denn auf dem rechten Bild wirkt die Straße stärker geneigt, als auf dem linken Bild. Oder etwa doch nicht?
-
Boer, V. de; Wielemaker, J.; Gent, J. van; Hildebrand, M.; Isaac, A.; Ossenbruggen, J. van; Schreiber, G.: Supporting linked data production for cultural heritage institutes : the Amsterdam Museum case study (2012)
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-
Sluis, F. van der; Broek, E.L. van den; Glassey, R.J.; Dijk, E.M.A.G.; Jong, F.M.G.de: When complexity becomes interesting (2014)
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Zuccala, A.; Someren, M. van; Bellen, M. van: ¬A machine-learning approach to coding book reviews as quality indicators : toward a theory of megacitation (2014)
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