1,720,964 research outputs found
Winter habitat selection by the European hare (Lepus europaeus) during feeding activity in a farmland area of southern Tuscany (Italy)
Get PDFWe investigated the winter habitat use by the European hare (Lepus europaeus) at the macro-habitat
level in a farmland area of southern Tuscany during feeding activity using spot-light counts.
Olive tree groves, cereal stubbles and winter cereals were used more than their availability,
whereas ploughed fields, alfalfa and fallow fields were used less than their availability. Olive tree
groves were the most used, followed by cereal stubbles. Since approximately 50% of over-wintering
cereal stubbles were the result of economic agreements between the hunting district and local farmers,
the study confirms the importance of this kind of agro-environmental measure for hare conservation
Occurrence of eggs and oocysts of intestinal parasites of pheasant (Phasianus colchicus) in droppings collected in differently managed protected areas of Tuscany (Italy)
No full textThe releasing of farm-reared pheasant (Phasianus
colchicus) is a very common practice in order to sustain high
hunting pressures. However farm-reared birds may be
carriers of parasites and diseases for the natural populations.
We compared the parasite egg and oocyst prevalence and
abundance of excretions found in faecal droppings collected
in 13 different protected areas of Tuscany: seven areas where
farm-reared pheasants are released every year to increase the
reproduction and dispersion of the wild population (restocking
areas) and in six areas where the production of pheasants
is guaranteed only by the wild population (wild areas).
Eimeria spp. oocysts were found in 33 of 129 (25.6%)
samples collected in wild areas and in 59 of 119 (51.3%) of
samples collected in restocking areas. Nematode eggs were
found in 21 of 129 (16.3%) samples collected in wild areas
and in 59 of 119 (49.6%) of samples collected in restocking
areas. Significant differences were found for Capillaria spp.
(31.9% of restocking areas vs. 9.3% of wild areas) and
Syngamus spp. (10.1% of restocking areas vs. 3.1% of wild
areas) but not for Heterakis or Ascaridia spp. (7.6% of
restocking areas vs. 3.9% of wild areas). Parasitic excretion
abundance was higher in the droppings collected in restocking
areas compared to those collected in wild areas, but
differences were significant only for Eimeria and Capillaria
spp. In order to reduce the risk of spreading parasites and
diseases, we suggest to interpose a strip (larger than the
home range of the pheasants) where hunting is not forbidden
between the restocking areas and the wild areas, and
pheasant releases should not be allowed at least within a
“pheasant home range distance” from the wild area
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Get PDFWe 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
Autosplenectomy and antiphospholipid antibodies in systemic lupus erythematosus: a pathogenetic relationship?
No full textTo describe a systemic lupus erythematosus (SLE) patient with functional asplenia and antiphospholipid syndrome (APS) and to review the literature to better define its pathogenesis and diagnosis, emphasizing a possible relationship with antiphospholipid antibodies (aPL). METHODS: Descriptive report of 1 case and review of the literature by means of a MEDLINE search from 1966 to 2002. RESULTS: A SLE patient presented with cutaneous vasculitis and an unexpected thrombocytosis which resulted from autosplenectomy. Subsequently, she developed full-blown APS. In the literature, autosplenectomy has been described only in 1 other case of APS secondary to SLE. However, clinical or laboratory features linked to aPL occurred in several other cases among the 17 cases reported with functional asplenia. CONCLUSIONS: Autosplenectomy in SLE may be pathogenetically related to aPL. Thrombocytosis, unusual in SLE, may be a diagnostic clue of this condition. Pneumococcal vaccination is warranted to prevent life-threatening infections that frequently complicate this asplenia
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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