1,721,025 research outputs found
Morphological analysis of Posidonia oceanica flowers from a reef formation and a shallow water meadow of the Ligurian Sea (north-western Mediterranean)
No full textThe flowering of Posidonia oceanica in the Ligurian Sea has been reported few times from 1880 to 1990. Recently the presence of inflorescences or fruits has been observed about yearly in this reagion. on the basis of a sample collected in 1994 during a large flowering in Noli meadow (Savona) we describe the morphology and we analyze the morphometry of the inflorescences from shallow water and reef formations. Comparisons with the morphometrical data of the inflorescences fron the Aegean Sea allow to emphasize some significant differences which supply new information for the taxonomical revision of the genus Psidonia in the Mediterranean Sea
Non destructive methods for the assessment of the fish fauna related to P. oceanica prairies.
No full textEvidence that low doses of L-type calcium antagonist PY 108-068 improve the recovery of rats with hindlimb paralysis.
No full textTecniche non distruttive per la valutazione della fauna ittica associata alle praterie di P. oceanica
No full text
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
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe 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
- …
