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Due piroghe rinvenute nel fiume Po presso Monticelli d’Ongina (PC) e Spinadesco (CR)
No full textSi presenta la piroga monossile rinvenuta nel 2001 nell’ alveo del fiume Po presso Monticelli d’Ongina (PC), sottoposta a restauro conservativo nel 2006 presso il locale museo, situato nel castello. La piroga conserva solo una delle due estremità. Si tratta di uno scafo massiccio, tipologicamente simile ad altri esemplari rinvenuti nei fi umi dell’ area padana. Non si esclude di poterla relazionare con il galleggiante di un ponte, di un pontone o di un traghetto. Si dà inoltre una prima notizia di una piroga scoperta a Spinadesco (CR) e sfortunatamente andata distrutta nell’ estate del 2012.A dugout canoe was found in 2001 nearby Monticelli d’ Ongina (PC), from Po river. Restored between 2006 and 2008 in the Po Museum (Pallavicino-Casali Castle), the dugout, unfortunately uncomplete, is similar to others found in Po valley rivers. It is possible to think the dugout, dated to VII-VIII century A.D., was part of a floating bridge or nautical structures. Another dugout was found nearby Spinadesco (CR), from Po river, but was destroyed by fire during 2012
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
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