1,720,956 research outputs found
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
Regenerative Periodontal Treatment with the Single Flap Approach in Smokers and Nonsmokers
No full textThe present study was performed to evaluate the impact of smoking status on 6-month clinical outcomes of a regenerative procedure based on enamel matrix derivative and deproteinized bovine bone mineral in the treatment of intraosseous defects accessed with buccal single flap approach. A total of 22 defects were selected in smoking (n = 11) and nonsmoking (n = 11) patients. Regenerative treatment resulted in similar clinical attachment level (CAL) gain in both smokers and nonsmokers. A trend toward lower 6-month CAL gain and probing depth reduction was observed in patients smoking 11 to 20 cigarettes per day compared to those smoking 1 to 10 cigarettes per day
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
Impact of supportive periodontal therapy on periodontal prognosis as assessed with a simplified method for risk assessment: a retrospective cohort study
No full textAim: To evaluate the impact of supportive periodontal therapy (SPT) on periodontal prognosis, as assessed with a simplified method (UniFe; Trombelli et al. 2009). Material and Methods: At 2 clinical centers, data were retrospectively obtained from the record charts of 109 patients (age range: 22–62 years). According to the individual treatment plan, patients had undergone active periodontal therapy (APT) and had been enrolled in a SPT program for a mean period of 5.6 2.2 years. At the completion of APT (T1) and the most recent SPT visit (T2), patient-related periodontal risk scores were calculated according to UniFe on a scale from 1 (low risk) to 5 (high risk).
Results: The mean risk score was 3.7 0.9 and 3.7 1.0 at T1 and T2, respectively, with no significant difference between T1 and T2. Also, no significant difference in the distribution of patients according to risk score were observed between time intervals. Patient mobility through risk groups from T1 to T2 was observed, with 21% of patients showing a decrease in risk score (1 score: 16%; 2 scores: 3%; 3 scores: 2%), while 28% showing an increase (+1 score: 26%; +2 scores: 2%). The increase in risk scores was mainly due to an increase in the
severity and extension of bone loss and probing depths as well as an increase in full mouth bleeding scores. Conclusion: In general, SPT may be effective in preserving patient-related periodontal prognosis following APT. When occurs, worsening of periodontal prognosis is mainly due to the recurrence of the clinical signs of the disease
Significance of a simplified method for periodontal risk assessment in predicting periodontitis recurrence during supportive periodontal therapy: a retrospective cohort study
No full textAim: To evaluate whether patient-related risk scores generated with a simplified method for periodontal risk assessment (UniFe; Trombelli et al. 2009) may predict periodontitis recurrence during supportive periodontal therapy (SPT).
Material and Methods: At 2 clinical centers, data were retrospectively obtained from the record charts of 109 patients (age range: 22–62 years). According to the individual treatment plan, patients had undergone active periodontal therapy (APT) and had been enrolled in a SPT program for a mean of 5.6 2.2 years. Patient-related risk scores referred to the first visit following APT were calculated on a scale from 1 (low risk) to 5 (high risk) according to UniFe. Patients were grouped according to risk scores and compared for tooth loss as well as
changes in radiographic bone levels and pocket probing depth (PPD) occurred during SPT.
Results: After APT, 5, 6, 20, 65, and 13 patients showed a risk score of 1, 2, 3, 4 and 5, respectively. The mean number of teeth lost during SPT ranged from 0 to 1.8 2.5 teeth in patients with a risk score of 1 and 5, respectively (p = 0.041), with a mean yearly rate between 0 (risk score 1) and 0.32 0.51 teeth/year (risk score 5) (p = 0.053). Mean bone loss and PPD increase during SPT were both ≤0.50 mm in all
risk groups, without inter-group differences.
Conclusion: Within its limits, the present study indicate that risk assessment according to the UniFe method may help to identify patients at risk for tooth loss during SPT
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
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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