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    Appropriate Similarity Measures for Author Cocitation Analysis

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    We provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis

    Regnum castellæ novæ Andalusiæ Granadæ [cartographic material] : et algaribiæ, nec non maxime partis Portugalliæ, et extremaduræ /

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    Map of southern Spain and southern Portugal showing provinces with relief shown pictorially.; Plate 17 from: Atlas / Justus Danckerts. Amsterdam : J. Danckerts, [1703?]; Phillips, 541.; Also available in an electronic version via the Internet at: http://nla.gov.au/nla.map-rm1581; Library copy is mounted on cardboard.Regnum castellae novae Andalusiae Granada

    A map of the world or terrestrial globe in two planispheres [cartographic material] : laid down from the observations of the Royal Academy of Sciences wherein as an introduction to the study of geography are inserted several things relating to the doctrine of the Earth, the globe as an explanation of the circles, the zones of & climates, longitude & latitude, its inhabitants the antipodes Antoeci & Perioeci an account of the terms by which the several parts of the Earth & waters are called.

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    Double hemispherical world map surrounded by spheres, illustrations and text showing Australia as New Holland joined to New Land of Diemens and Land of Papous or New Guinea. Antarctica is shown as "Parts unknown".; "Also a concise theory of the Earth describing the diurnal and annual motions, its magnitude & the proportions of its parts. Likewise an explanation of the Copernican system shewing magnitude, periods & densities of the planets with their distances from the Sun and the quality of the light & heat they severally receive together with astronomical remarks explaining the causes of summer and winter the changes and increase of day and night".; The upper and lower panels of the map contain circles of text in decorative cartouches covering the horizon, meridians, the equator, the ecliptic, the tropics, the polar circles, the zones, climates, longitude, latitude, the inhabitants and a description of ye Earth.; In lower margin: Honi soit qui mal y pense. Dieu et mon droit.; Prime meridian: Ferro Island.; Also available in an electronic version via the Internet at: http://nla.gov.au/nla.map-rm3874

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed

    IX A 1 - Alte Stadtrechnungen (1700 - 1701)

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    IX A 1 - ALTE STADTRECHNUNGEN (1700 - 1701) IX A 1 - Alte Stadtrechnungen (1700 - 1701) ( -

    IX A 1 - Alte Stadtrechnungen (1701)

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    IX A 1 - ALTE STADTRECHNUNGEN (1701) IX A 1 - Alte Stadtrechnungen (1701) ( -

    IX A 1 - Alte Stadtrechnungen (1701 - 1702)

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    IX A 1 - ALTE STADTRECHNUNGEN (1701 - 1702) IX A 1 - Alte Stadtrechnungen (1701 - 1702) ( -
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