1,720,959 research outputs found
Firma digitale e slow democracy
Full text linkViene analizzata la recente introduzione della firma digitale per attivare gli strumenti di democrazia diretta in Italia, a livello di iniziativa popolare (referendum e iniziativa legislativa). Vengono prospettati i possibili squilibri che la disciplina può introdurre nella forma di stato di democrazia pluralista e i possibili bilanciamenti
Il virtuoso (e complesso) sinergismo tra le discipline dei costi della politica e della par condicio nella regolazione della comunicazione politica, tra vecchie e nuove tecnologie
No full textAutorità locali e pubblica sicurezza: cenni comparativi, con particolare riferimento al sistema del Regno Unito
No full textI blocchi di Gow-Gates, di Akinosi-Vazirani e di Mariuzzi eseguiti da un neofita
No full textSummary
After patient’s informed consent, the novice’s ability to learn three different nerve block techniques and their efficacy were studied. The first stage of learning was the performance of Gow-Gates and Akinosi-Vazirani mandibular nerve blocks, and Mariuzzi inferior alveolar nerve block, on three groups of patients scheduled for oral surgery. Then, the blocks were performed again on 25 (Gow-Gates), 20 (Akinosi-Vazirani) and 20 (Mariuzzi) patients. In this second stage of study the necessity for further infiltrations, the pain due to the block, the intra and postoperative pain, the number of positive aspirations, the pulp test on ipsilateral first premolar and central incisive were studied. In all patients prilocaine 3% with felypressin, 1.8 ml, were used. The learning stage was over after 13 patients treated with the Gow-Gates block, 14 with Akinosi-Vazirani block and 10 with Mariuzzi block. The variations of the first premolar sensitivity, were evaluated with the pulp test only when, an anaesthesia delay of the central incisive was observed. During the second stage of study, anaesthesia after Gow-Gates block, resulted earlier on first premolar than on central incisive. The patients treated with the Gow-Gates technique did not need further blocks of buccinator nerve, whereas the other patients needed it, (Akinosi-Vazirani 9 infiltrations, p<0,01; Mariuzzi 7 infiltrations, p<0,01). From results it appears that pain was light during block execution and absent during surgery, postoperative analgesia was prolonged and there were three positive aspirations during Gow-Gates blocks execution. The anaesthesia delay regarding the central incisive, observed after Gow-Gates block, may be explained by several factors: accessory innervations, peripheral nerve fibres located in the core of mandibular nerve, local anaesthetic dilution in tissues, etc
Four atypical cases of misdiagnosed facial cutaneous sinuses of dental origin
No full textBACKGROUND: Odontogenic cutaneous sinus tracts are frequently misdiagnosed as cutaneous non-dental related pathologies, due to their lack of a typical morphology, their extraoral location, and the frequent absence of concomitant dental symptoms. An erroneous diagnosis may lead to long-lasting, invasive, and not resolutive surgical and medical treatments. METHODS: Four patients referred to our department lamenting the presence of a recurrent facial cutaneous sinus tract. They all had already had different wrong diagnoses and were treated with not resolutive therapies or surgeries. After a clinical and radiographical oral examination, the cutaneous fistulas were found to have a dental etiology, and the extraction of the compromised tooth was performed. RESULTLTS: One week after the tooth extraction, all the patients presented good healing of the intraoral mucosa. At the long-term follow-up in all four cases, the definitive closure of the extraoral sinus tract and a reduction of the scar was found. CONCLUSIONS: If a facial sinus tract is present, the odontogenic etiology should always be considered, since it can easily bring to the correct diagnosis, leading to a rapid resolution of the fistula. Once the dental origin has been confirmed, the suggested treatment for a conclusive resolution of the cutaneous sinus tract is the endodontic treatment or the extraction of the affected tooth
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
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