1,720,999 research outputs found
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
Adjunctive Effects of Diode Laser in Surgical Periodontal Therapy: A Narrative Review of the Literature
Full text linkThe surgical procedures in the treatment of periodontitis generally aim to reduce pocket depth, improve teeth maintenance, and enhance long-term stability. Several approaches have been proposed over the years including different techniques, drugs, and medical devices, with the main purpose to minimalize the surgical procedure and improve both the outcomes and patient compliance. Among all the medical devices proposed in surgical and non-surgical periodontology, different laser wavelengths (e.g., Erbium: YAG, Erbium: CR, KTP, Diode) have been studied worldwide but generally with inconsistent results. Nowadays, the diode laser is one of the most used lasers among general dentists, also promoted as an adjunctive therapy in periodontology, mainly in non-surgical procedures. This study aims to review data emerging from the literature on the use of diode lasers and adjunctive therapy to the conventional periodontal surgery. This research was conducted using PubMed and Scopus search engines with a combination of relevant keywords, including “Surgical Periodontal Therapy”, “Periodontal Surgery”, “Periodontal Regenerative Surgery”, and “Surgical Treatment for Periodontal Disease” in combination with “Diode Laser”, “Diode-Driven Laser”, and “Diode Emission Laser”. Selected articles were carefully reviewed to identify studies reporting data on the effectiveness of diode lasers in periodontal surgery. Results of the current review suggest potential clinical benefits of diode laser-ssisted periodontal surgery, as studies reported improvements in key parameters such as clinical attachment level (CAL), bleeding on probing (BOP), and plaque index (PI) postoperatively. Additionally, VAS scores, indicative of post-surgical discomfort, were lower for laser-treated sites, and a short-term reduction in periodontal pathogens was observed. However, the clinical outcomes significantly differ across the studies, and the evidence does not uniformly support a superior effectiveness of diode lasers as an adjunctive tool in surgical periodontology. While the data indicate that diode laser use may contribute to enhanced periodontal health and possibly accelerate healing in some cases, these findings should be interpreted cautiously, as further research, possibly multicentric and in large numbers but mandatory with well-defined protocols (stage of periodontitis, preliminary non-surgical procedures and results, laser wavelength and protocol of use, post-operative maintenance, follow-up clinical and radiological criteria) are surely needed to possibly validate the observations emerging from the current review and eventually to standardize clinical protocols in the future. Such limitations have been well addressed in this paper and are clearly discussed and essentially related to the focus on the total uncertainty of the literature and general cautio
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
Pertes énergétiques d'une éolienne à partir des formes de glace simulées numériquement
Full text linkLes milieux nordiques disposent généralement de régions très bien exposées au vent et ces régions semblent idéales pour l'exploitation des éoliennes. Malheureusement, les problèmes liés au givrage y sont fréquents et ont des sérieuses conséquences sur la production des éoliennes, leur maintenance et leur durée de vie.
Le givrage, qui est caractéristique des régions au climat froid, est le phémomène d'accumulation de glace sur les pales des éoliennes. Il est causé par la pluie verglaçante, la bruine et le brouillard givrant au niveau du sol ou le givrage dans les nuages en altitude, ou le gel, lorsque l'éolienne est installée à proximité des masses d'eau. Le givrage diminue les performances aérodynamiques en provoquant des pertes de puissance et par conséquent des pertes énergétiques.
L'impact du givrage est difficile à quantifier sans essais expérimentaux et simulations numériques en raison du manque de données réelles sur le terrain. Le coût des essais en soufflerie étant élevé, une approche par simulations numériques permet de fournir rapidement des informations sur les pertes de performances aérodynamiques et énergétiques dans différentes configurations d'éoliennes et de conditions météorologiques. Combiner des mesures météorologiques nombreuses à des modèles numériques puissants est essentiel pour évaluer adéquatement l'impact du givre sur le fonctionnement d'une éolienne et sa production annuelle
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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