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Challenges of cultural and colonial encounters - European commodities in the Historic Thule Culture
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Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Ålens mysterium: en dansk specialitet i 130 år
No full textDe skjulte sider af ålens livshistorie har optaget danske forskere i halvandethundrede år, og siden 1903 har det været en dansk specialitet at sende ekspeditionerlangt ud i Atlanterhavet. Tre ekspeditioner til Sargassohavet i 1966, 2007og 2014 skulle fange en gydende ål foruden åleæg og ålelarver. Siden begyndelsenhar interessen for ny viden været central for åleforskningen, men de historiskereferencer til forgængerne, særligt havforskeren Johannes Schmidt, fylderstadig, når der skal skaffes midler til endnu et dybhavstogt. I dag argumentererforskerne desuden for, at de bidrager til at redde bestanden af europæiske ål,som engang var en af Danmarks vigtigste spisefisk. Med sig på togt har de moderneteknologi og stadig mere avancerede fangstredskaber, satellitsporing ogelektronmikroskopi
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