1,720,982 research outputs found
Diagnoisi dell'idatidosi ovina mediante emoagglutinazione indiretta-IHA test for the diagnosis of Hydatidosis in sheep
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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
Keratinophylic fungi in off-leash areas soil of Bologna (Northern Italy)
No full textINTRODUCTION. Off-leash areas, created for dogs to exercise and play in a controlled environment, are increased in urban areas all around the world. Together the benefit, public health considerations can concern also zoonotic risk (Rahim et al., 2017 J. Comm. Health, 43:433–440). It is known that the presence and quantity of keratinophilic fungi in the soil is closely related to the animalization process: soils rich in keratin material of animal origin constitute a suitable pabulum for the survival and multiplication of potentially pathogenic agents for humans and animals (Mantovani,1978, Mycopathol., 65: 61-66). The aim of this study was to evaluate the presence of keratinophilic fungi in the soil of off-leash areas in Bologna.
MATERIALS AND METHODS. Six areas were selected; every ones was divided in two subareas in each of which a x sampling scheme was used (according to DM 11/5/1992), collecting a sample of superficial soil every 2 meters along the diagonals. From each area, 8 pools for mycological examination (see figure) were obtained, and handled according to Vanbreuseghem et al., (1978. Guide pratique de mycologie medicale et veterinaire, Masson, Paris) to isolate keratinophilic fungi, using human hair as baits. A total of 56 pools were examined.
RESULTS AND CONCLUSIONS. All the off-leash areas were positive for the geophilic M. gypseum, potentially pathogenic for humans and animals, found in 43/56 samples (76.8%); also the geophilics Trichophyton ajelloi (2/56-3.6%) and Chrysosporium sp (4/56-7.1%) were occasionally found. In this research, the assortment of genera of keratinophilic fungi was lower than other surveys carried out in soil from parks of urban areas or in soil from lairs of wild animals (Morganti and Tampieri, 1984, Nuovi Ann Ig. Microbiol, XXXV: 43-50; Gallo et al., 2005, Med Mycol. 43,:373-379; Galuppi et al., 2002, VI congresso FIMUA, 127-128), and no zoophilic dermatophytes were found. The lack of the latter should not be surprising, because they do not replicate in the ground and are rapidly destroyed by the environmental microflora, so their occasional finding in the soil is usually considered a consequence of a recent contamination due to infected animals (Lostia and Pinetti, 1970 , rassegna medica sarda, 73: 71). Vice versa, a higher percentage of positive samples for M. gypseum was found. Probably, the high attendance of a single animal species (dog) in these areas may promote the development of an ecological niche favourable to the development of this mycete. It could be of interest to verify, in collaboration with dermatologists, if an higher prevalence of dermatophytoses due to M. gypseum is observed in people attending off-leash areas
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
Canine faecal contamination and parasitic risk in the city of Bologna
No full textINTRODUCTION. Canine faecal contamination of urban areas represents an important public-health problem. The aim of this study was to evaluate the degree of both canine faecal pollution and presence of canine parasitic elements in the city of Bologna, with particular attention to the Bolognina district, where a previous similar experience was done.
MATERIALS AND METHODS. The methods used in the previous study (Martini and Cassani,1984, Ann. Ist. Super. Sanità, 20:291-296) were employed to evaluate the canine faecal contamination of Bolognina district after more than 35 years, following a 6.2 km route structured in the middle of the quarter, for 12 times in a year. The centre of Bologna was also examined, dividing the overall area included in the circular avenue in 6 sub-areas. A sampling was performed just once in each sub-area, following a continuous route including the highest number of streets, for a total of 50.14 km. All the faeces found were collected and submitted to qualitative microscopic analysis by centrifugation-flotation technique. For each sample, a form was filled to specify date, time, address of the findings and some characteristics (weather in previous days, type of road, location, fresh state, aspect, presumed dog size, traces of trampling). All the data were reported in a Geographical Information System (QGIS 2.18) and on Excel datasheet (v. 2016).
RESULTS AND CONCLUSIONS. A total of 228 faecal samples was collected, of which 192 from Bolognina district (daily faecalization level: 2.6 faeces/km) and 36 from Bologna centre (total faecalization level: 0.7 faeces/km). A part of collected faeces was dried and traces of trampling were found in both areas. The prevalence of faeces attributed to large dogs resulted significantly higher in samples collected in Bolognina (17.19%), respect to the centre of city (2.78%) (χ2 y = 3,89; p< 0.05). In Martini and Cassani study (1984 l.c.), 2204 faeces were found in 10 months following the same route in Bolognina (daily faecalization level: 35.5 faeces/km). Comparing this value with our results, we can observe that the faecalization of the area decreased during past decades. Only two faecal samples (0.88%) were positive for parasitic elements, both from Bolognina district: eggs of Trichuris vulpis were found in both and Ancylostomatidae in one of them. The faecalization level and the presence of canine parasitic elements in the centre of Bologna and in Bolognina district, are lower compared to other studies (Poglayen et al., 2000, parassitologia, 42 (suppl1):220; Rinaldi et al., 2006, BMC Vet. Res. 2: 29; Zanzani et al., 2014, Sc. World J. http://dx.doi.org/10.1155/2014/132361, Beraldo et al., 2014, Atti XXVII SoIPa, 258). The low parasites prevalence in this area agree with the results of the diagnostic routine of our lab
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