1,721,028 research outputs found
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
Intestinal parasites infecting captive non-human primates in Italy
No full textNon-human primates (NHP) living in captive conditions are susceptible to intestinal parasites that can contribute to mortality and morbidity, and cause zoonotic infections. Thus, parasite surveys on NHP populations under human care are relevant as part of the evaluation of NHP welfare and in the zoonotic disease risk assessment, as well as in the exploration of parasite transmission pathways. This study aimed to identify and to characterise at the molecular level the intestinal parasites from NHP living in two wildlife recovery centres and in a zoological garden, in Italy. Thirty-two faecal samples from primates Macaca tonkeana, Macaca fascicularis and Sapajus apella were collected at Parco Faunistico Piano dell’Abatino (Rieti, Lazio), and faecal smears and flotation were performed in order to identify parasites based on morphology. Additionally, one carcass of Macaca fuscata from Fondazione Bioparco di Roma (Rome, Lazio) and one of Macaca fascicularis from Centro Recupero Animali Selvatici della Maremma (Semproniano, Tuscany) were necropsied and intestinal adult nematodes were collected. Protozoans (Balantiidididae, Dientamoeba sp., Iodamoeba sp., Entamoeba coli) and nematodes (Trichuris sp., Strongyloides sp., Oesophagostomum sp.) were found through faecal smears and flotation. The collected adult nematodes were morphologically identified as whipworms (genus Trichuris) and molecular characterised using mitochondrial CO1 and 16S markers. Phylogenetic analyses grouped Trichuris specimens from M. fuscata into a host-specific branch of the Trichuris trichiura complex of species, while whipworms from M. fascicularis clustered within a clade formed by Trichuris infecting several primate species, including humans. The results of this study could be useful in the formulation of captive NHP management and care plans, and in the elaboration of safety measures for visitors and animal keepers, as parasites with zoonotic potential were identified
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
Giardia duodenalis infection in dogs affected by primary chronic enteropathy
Full text linkBackground: Canine primary chronic enteropathy (CE) includes a heterogeneous group of diseases characterized by chronic gastrointestinal signs.
Aim: This study evaluated the occurrence of Giardia duodenalis infection in primary CE-affected dogs.
Methods: Forty-seven CE-affected dogs of different age and sex were enrolled in the study. For each dog, frequency of defecation, fecal consistency, and eventual fecal abnormalities were evaluated. A clinical scoring index of CE severity (clinical chronic enteropathy activity index) was also assessed, and the type of enteropathy was retrospectively classified. For parasitological analysis, fresh fecal samples collected from each dog were examined by fresh and Lugol stained smears, flotation test, and a rapid immunoassay. Giardia duodenalis genotypes were identified by molecular
analysis. Differences of clinical parameters between G. duodenalis positive and G. duodenalis negative dogs were statistically evaluated.
Results: Among the CE canine patients, 16 out of 47 (34%) dogs were found positive for G. duodenalis and assemblages C and D were identified. No statistical differences emerged according to the types of CE between G. duodenalispositive and G. duodenalis-negative dog groups. The clinical index of CE severity was indicative of significant less severe clinical forms in G. duodenalis-positive dogs (p = 0.037).
Conclusion: Results here obtained shows how G. duodenalis may be present in primary CE-affected dogs and further investigations are needed to clarify the real significance of mild clinical presentation in G. duodenalis-positive dogs affected by CE
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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