1,720,987 research outputs found
Bivalve culture optimisation of three autochthonous species (Ruditapes decussatus,Mytilus galloprovincialisandOstrea edulis) in a central-western Mediterranean lagoon (Porto Pozzo, northern Sardinia)
Full text linkThree autochthonous species of Bivalve Molluscs were investigated in the Porto Pozzo lagoon (northern Sardinia, central-western Mediterranean Sea). Gametogenic cycle, Condition Indexes and biochemical composition of the grooved carpet-shell, Ruditapes decussatus, from local natural banks were studied during the period July 2009-July 2010. All the factors examined showed a clear seasonal cycle, depending on the reproductive activity and on some environmental variables.
Growth, Condition Index and proximate composition of the Mediterranean mussel, Mytilus galloprovincialis, cultured in the oligotrophic lagoon of Porto Pozzo were compared with those obtained in a typical eutrophic ecosystem (the Calich lagoon) and in a mesotrophic basin (the Tortolì lagoon). The trial was carried out in long-line systems in the three lagoons considered, from April to October 2010. The results obtained confirmed a high variability of the three coastal habitats and among the mussel groups cultured in each of them, simultaneously revealing excellent performances, in term of morphometric variables and Condition Index, of the molluscs grown in the Porto Pozzo lagoon.
Finally, comparisons of the growth and survival rate of the European flat oysters Ostrea edulis reared using three different experimental tools were performed at two depths. The trial was carried out in the long-line system of the Porto Pozzo basin between June and October 2011. The best results in terms of survival rate and growth performances were achieved at the lower depth of -1 m, regardless of the experimental tools used.
Given the results obtained, the observation that Porto Pozzo lagoon is an excellent area for Bivalve Molluscs culture can be supported
Proximate composition of edible sea urchinParacentrotus lividusroe commercialised in Sardinia = Composizione centesimale di gonadi del riccio di mare eduleParacentrotus lividuscommercializzate in Sardegna
Full text linkChemical analyses on edible sea urchinParacentrotus lividus(Echinoidea) gonads legally (L) and illegally (I) sold in Sardinia (Italy) were carried out during the fishing season 2008-2009. Statistical tests performed on moisture, ash, crude protein, lipid and carbohydrate content detected significant differences between L and I samples, but also among roe illicitly commercialised (I) by
ambulant vendors in different Sardinian coastal districts
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
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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