1,721,053 research outputs found
Inventory of the vascular flora of the alkaline fen “Torbiera di Lipoi” (Veneto, northern Italy)
Full text linkOn the basis of literature, and herbarium data and new field research, we provide a diachronic floristic inventory of a small alkaline fen meadow close to the southern border of the Dolomiti Bellunesi National Park (Veneto, N-Italy), whose toponymal is “Torbiera di Lipoi”. Overall, 319 infrageneric taxa were listed. Results indicate that, despite natural reforestation triggered by the abandonment of the traditional management of the fen, most of the fen-related vascular species still occur, including red-listed species, although their populations have probably decreased over time. Moreover, alien species are still a minor component of the flora, occurring in small scattered populations. However, there are signals of vulnerability, and probably the current vascular flora reflects a previous situation in which fen-related habitats were much larger than today. This urgently claims for active maintenance of the small open areas that still exist to counteract extinction debt dynamics
Natura 2000 Habitats map, forest types and vegetation outline of Val Tovanella Nature Reserve
No full textThe vegetation of Val Tovanella Nature Reserve was surveyed during the LIFE Project LIFE04NAT/IT/000190 to produce a map of Habitats of
Community interest (Natura 2000 Habitats). The territory of the reserve is mostly occupied by forests, and a large number of forest types and their respective facies were recorded. Particularly important are Tilio-Acerion ravine forests, and black pine forests, which are Priority Habitat types. The forest cover includes wide silver fir and beech forests, and the subalpine mountain pine woods, the latter being a Priority Habitat type as well. Pioneer vegetation of the rocky slopes and screes is well-represented. We present the list and a description of habitat types, which are essential for future management, and we also highlight the nature value of the vegetation, with regard to syntaxonomic features
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
Vegetation outline and Natura 2000 Habitats of Vincheto di Celarda Nature Reserve
No full textIn this paper we describe the vegetation of Vincheto di Celarda Nature Reserve based on our map of the Natura 2000 Habitats which was created
during the LIFE Project LIFE04NAT/IT/000190. The vegetation types with the highest nature value are the riparian woods (Salicion albae), and
the communities on riverside gravel bars (Salicetum eleagni and Saturejon subspicatae - Scorzoneretalia community). We provide a physiognomic description of the vegetation which will be useful for the management of the reserve. The syntaxonomic aspects are described briefly
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
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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