1,721,032 research outputs found
Piccioni in città: rischi sanitari per l’uomo.
No full textHigh numbers of pigeons live in almost every city in the world and pigeons can harbour a large variety of pathogens. The health hazard for human has been frequently emphasised, but according to a comprehensive literature search and some recent review articles Cryptococcus and Chlamydophila psittaci are the only pathogens with zoonotic potential that can pose some health hazard for humans. Both this pathogens can be transmitted from airborne excreta, mainly dried feces. The review is updating the main aspects of Cryptococcus and Chlamydophila psittaci infections in pigeons and the role of this bird as a source of infection for humans. Recommendations aimed at preventing pigeon-related infection in humans are also given suggesting education initiatives and communication of health risk. These must be targeted to specific categories of persons at risk such as immunocompromised patients, old people, children and special categories of workers that can became in contact with dried pigeons droppings
Varieties of Inferential Semantics
Full text linkIn its most general definition, provided by Robert Brandom, inferentialism is the idea that inference is of particular significance in the understanding of conceptual content. Several theories of meaning have been found classifiable under this so broadly defined cathegory. Besides Brandom's own one, Dummett's philosophy of language particularly stands out among these. This paper deals with the analysis of the inferentialist approach in semantics. Proof-Theoretical Semantics and Incompatibility Semantics are considered as paradigmatic examples of such enterprise. Their role as formal semantics in the framework of Dummett's and Brandom's theories of meaning is discussed, and their technical properties are examined and compared. The results of the analysis highlight some characterizing features of inferential semantics
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
Early life-threating enlargement of a vestibular schwannoma after gamma knife radiosurgery
No full textStereotactic gamma knife radiosurgery (GKS) may induce a transient enlargement of vestibular schwannomas (VS). This phenomenon, known as pseudoprogression or swelling, starts at about 3 months following GKS, peaks at about 6 months, and typically subsides thereafter, usually without significant neurological deterioration. We describe a 34-year-old female who developed an aggressive enlargement of a VS 1 month after GKS. The patient was treated with an immediate external ventricular drainage and surgical resection via retrosigmoid approach for an acute neurological deterioration due to hydrocephalus and brainstem compression. Histopathological examination revealed a VS with abundant intratumoral thrombosis and necrosis, suggesting that its rapid expansion could be related to massive radiation-induced tumor necrosis. The present case indicated that rapid life-threating enlargement of a VS may occur as an early complication following GKS
Progettare la valorizzazione dell’Agro Romano sudoccidentale. Sintesi conoscitive e proposte tecniche
No full textThis Report describes the result of some researches about the historical and critical analysis of ostiense harbour system, which is inserted into the perimeter of the Natural Reserve along the Roman Coast. The purpose of this work is the development of the south-western suburb of Rome by a planning of a common museum balancing the various cultural resources of this area as a sequence of thematic paths in which the objects are no longer isolated elements randomly organized, but they can be stages of a coherent system.
Therefore, the study is based on the elaboration of critical readings about the south-western suburb of Rome in its material, landscape and environmental context, employing the methodology preparatory to a participation that starts from the territorial level and achieves to indicating the intervention on the individual product
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
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