1,720,954 research outputs found
Sun prevention and information technology
No full textThe study was carried out in Capri during the summer of 2006. The data concerning UV irradiance were regularly recorded over
the entire period of the study describing the numerical index of UV radiation intensity (UVI).5
A total of 450 tourists answered a questionnaire containing personal information regarding sex, age, eye colour, hair colour, phototype, sunscreen used and sunbathing time. The MED was measured by the Skin Analyser Q Tan. After the MED examination,
the staff of dermatologists created a card (record) for each volunteer examined, which contained information about their photosensitivity. During sun exposure the volunteers examined at the dermatologic centre were informed directly through their mobile phones by SMSs, about the optimal UV dose for their skin, an estimate of the residual exposure time and the protection factor of the sunscreen they needed according to UVI units registered.
The information released by mobile phone was based on the correlation of daily UVI registered by the experimental set-up and the individual photosensitivity, thus obtaining an estimate of the maximum exposure time expressed in minutes to prevent sunburn.
These values were reached on the basis of the effective erythemal dose (DE) expressed in MED/h using the following algorithm ST 1⁄4 60/DE. Therefore, in a typically sunny August day with a UVI equal to 6 (2.6 MED/h), a phototype I or II at his/her first
sun exposure would develop a sunburn after about 20 min, while in a moderately pigmented subject, this would take some hours (Table 1).
This campaign aimed to capture the attention of young people by an experimental photodermatology service and to promote preventive care through a system of customized UVI teledosimetry using information technology such as mobile phones, keen to young people. This pilot study could represent an example of cooperation between information technology and clinicians using information technology in the field of photoprotection and can suggest further research development to optimize the sun prevention
device
Photodinamic therapy with toipical aminolevulinic acid for the treatment of plantar warts
No full textAim. treatment currently employed for plantar warts (PW) are often painfl and poorly effective. This study evaluates the effect of photodynamic therapy (PDT) with δ-aminolevulinic acid (ALA) on PW.
Methods. Before treatment, the superficial hyperkeratotic layer of warts was removed by the application, for 7 days, of an ointment containing 10% urea and 10% salicylic acid. Then, after gentle curettage, a cream containing 20% ALA was applied under occlusive dressing for 3h on 3 patients with 84 warts, while 30 patients with 62 warts (controls) receveid only base cream. Both groups were irradiated using a visible light lamp (range 400-700 n, peaking at 630 nm). The light dose was 50 J/cm2 each session. Patients were followed-up for 12 months. During the treatemtn some patients referred mild burning sensation or slight pain. The absorption of ALA in warts was investigated and demonstrated by in vivo fluorescence spectroscopy.
Results. Two months after the last irradiative session, 84.5% of the ALA-PDT treated lesions and 22.5% of controls had resolved.
Conclusions. The results of this study suggest that topical ALA-PDT can be considered as alternative treatment for PW
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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