1,720,955 research outputs found
Disseminated superficial porokeratosis and pyoderma gangrenosus
Full text linkDisseminated Superficial Actinic Porokeratosis (DSAP) is usually triggered by sun exposure. In some cases sun exposure is not essential and this skin disease is related to immunosuppression. Many associated diseases are described in the literature. We report a clinical case of a patient affected by pyoderma gangrenosum, who developed DSAP
La borreliosi di Lyme e la sua diffusione in Italia
No full textLyme borreliosis (LB) is a tick borne spirochetosis first reported in 1975 in the town of Lyme (Connecticut, USA). In Italy the first case was observed in Liguria in 1983. LB is a multisystemic infection involving skin, joints, nervous system, eyes and heart. The prevalence of LB reflects the geographic areas where the vectors are present. Hard tick Ixodes ricinus is the most common vector, but also other haematophagous arthopodes, such as tabanides and fleas are considered vectors of Borrelia burgdorferi. At present there is no map of the tick distribution in Italy. The infection is endemic in the woody areas of the Alps and their neighbouring Regions Friuli Venezia Giulia, Liguria, Trentino Alto Adige, some areas of Veneto and north-west Tuscany and Emilia Romagna. Some sporadic reports suggest that Borrelia burgdorferi infection is present also in other Italian regions. However, it is currently difficult to present conclusive epidemiologic data on LB. In fact there are no widely accepted case definitions for the numerous clinical features due to or linked to Borrelia burgdorferi infection and the incidence and the prevalence of each LB manifestation are different depending on the geographical areas. In this paper the differences between American and European, (in particular, Italian) clinical manifestations are discussed. Erythema migrans is the hallmark of early LB, present in about 80% of cases, and it is the most common lesion observed in our regions; acrodermatitis chronica atrophicans is milder in Italy than in Northern Europe and arthritis is less common in Italy than in the USA. In conclusion, at present the real incidence and prevalence of LB, in Italy is unknown and it cannot be estimated exactly because there is no mandatory reporting and standardized case definitions are not always in use
Dermatological manifestations of Lyme borrelosis
No full textLyme Borreliosis is a multisystemic infection involving skin, joints, the nervous system, the heart and eyes. As of yet four different genospecies of Borrelia burgdorferi have been identified: Borrelia burgdorferi sensu stricto, Borrelia gariniti, Borrelia afzeliti, and Borrelia japonica. Different strains of borreliae have been associated with different clinical manifestations of Lyme Borreliosis. Lyme Borreliosis is classically described as having three clinical stages or, similar to syphilis, an early phase and a late one. The early infection corresponds to the first stage, the late infection includes the second and the third stages. Skin manifestations of Lyme Borreliosis could be classified into five categories. The first one is characterized by skin manifestations proven to be caused by Borrelia burgdorferi infection, including erythema migrans, lymphadenosis benigna cutis and acrodermatitis chronica atrophicans. The second category covers controversial Lyme Borreliosis manifestations, such as lichen sclerosus of athrophicus, morphea, scleroderma, Scleredema of Buschke, atrophoderma of pasini and Pierini, Parry-Romberg syndrome (facial hemiatrophy) and Shulman's fasciitis. The third category encompasses granuloma annulare, atypical persistent pityriasis rosea and pityriasis lichenoides which are skin lesions occasionally related to Lyme Borreliosis. Urticaria, erythema nodosum and papular acrodermatitis (Giannotti Crosti syndrome) have been classified as reactive Lyme Borreliosis skin manifestations. The last category of diseases includes exceptional skin manifestations during Lyme Borreliosis such as nodular panniculitis (Weber-Christian), B-cell cutaneous lymphoma and juvenile chronic myeloid leukemia
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
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