1,720,966 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
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
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
Évaluation des facteurs prédictifs de devenir neurologique défavorable et comparaison à l’IRM avec tenseur de diffusion chez le traumatisé crânien grave. Étude rétrospective monocentrique
No full textContexte : il est nécessaire de dépister précocement les patients TCG voués à un avenir neurologique défavorable afin de définir le niveau d’engagement thérapeutique et de donner des informations objectives à l’entourage du patient. Ce travail cherchait à évaluer les facteurs prédictifs de devenir neurologique défavorable, et à savoir si l’on pouvait se passer de l’IRM avec tenseur de diffusion dans cette démarche éthique. Méthode : étude rétrospective au sein de la réanimation chirurgicale du CHU de Bordeaux de juin 2016 à juin 2022. Une première cohorte (de validation) testait la stratégie pronostique du service qui incluait EEG, IRM, PES et PEA. Une deuxième cohorte (de comparaison) comparait la sensibilité et la spécificité de cette stratégie à l’IRM DTI. Le devenir neurologique défavorable était défini par un score GOSEm ≤ 3-. Le potentiel d’évolution favorable était défini par GOSE modifié ≤ 3- en fin de réanimation et ≥ 3+ à 1 an. Résultats : un score pronostic CEM permet de prédire le devenir neurologique défavorable avec une aire sous la courbe (AUC) = 0.83 [0.71 – 0.84]. La zone grise comprend 45% des patients. La concordance entre l’IRM DTI et score CEM n’est pas optimale avec un score Kappa de 0,64. La cohorte de comparaison retrouve un taux de faux positifs du score CEM de 17%. Conclusion : le score CEM, lorsqu’il est utilisable, peut diminuer la subjectivité lors des décisions de LATA avec un nombre non négligeable de faux positifs. Il reste cependant inférieur à l’IRM avec tenseur de diffusion pour prédire le devenir neurologique des patients traumatisés crâniens
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
Capacité de l’ANI (Analgesia Nociception Index) à prédire la douleur chez le patient de réanimation
No full textBackground: Painful acts are frequent in intensive care unit (ICU). In order to identify and prevent them, the use of behavioral scales such as BPS is recommended in non communicating patients. ANI, an index issued from heart rate variability, could be an objective way to measure pain in ICU as shown in the perioperative period. Objective: The main objective of our study is to analyze the pain prediction capacity of ANI during a standardized nurse in ICU. Design: Multi- center prospective study on communicants or not polyvalent ICU patients, sedated (RASS between -4 and 1), either brain-injured or not. BPS was simultaneously recorded with instant and mean ANI, at several times - at rest (T0), during a stereotyped pain (current nurse) (T1), 2 minutes after nurse ending (T2) and 15 minutes after nurse ending (T3). Pain was defined by BPS ≥ 5. A correlation between BPS and ANI was searched at all times, and between T0 ANI and T1 BPS, in order to detect a latent pain. If a correlation was found, a ROC curve was considered to define an ANI threshold able to predict BPS ≥ 5. Demographic data and physiological parameters as well as treatments which could impact heart rate variability were collected and analyzed. Results: 56 patients were included in 2 centers. Statistically significant variations of ANI and BPS exist between T0 and T1, T1 and T2, but not between T0 and T2. No correlation was found between instant or mean T0 ANI and T1 BPS (r2 of 0,0004). No correlation was found between mean or instant T0 ANI and BPS at any time. An ANI threshold determination for BPS ≥ 5 was not possible. Conclusion: In our study of polyvalent ICUs, ANI was not able to predict pain occurrence. However, there exist significant modifications of ANI and BPS during a standardized pain, although the two are not correlated. The presence of brain-injured patients, possibly facing an autonomic nervous system dysregulation, could explain the lack of correlation.Introduction. Il est recommandé d’utiliser des échelles comportementales comme le BPS (Beha- vioral Pain Scale) chez des patients non communicants pour évaluer la douleur en réanimation. L’ANI (Analgesia Nociception Index), dérivé de la variabilité de la fréquence cardiaque, pourrait objectivement mesurer la douleur en réanimation, comme cela est montré en péri-opératoire. L’objectif de l’étude est d’analyser sa capacité à prédire l’apparition d’une douleur durant un soin courant standardisé de réanimation. Matériel et méthodes. Étude prospective multicentrique chez des patients de réanimation polyvalente non communicants, sédatés ou non, cérébro-lésés ou non. BPS et ANI moyen et instantané ont été relevés simultanément, à plusieurs temps : au repos (T0), pendant un soin courant stéréotypée (T1), 2 minutes (T2) puis 15 minutes après la fin du soin (T3). La douleur était définie par un BPS ≥ 5. Une corrélation a été recherchée entre l’ANI à T0 et le BPS à T1 afin de déceler une douleur latente puis entre BPS et ANI aux différents temps. En cas de corrélation, une courbe ROC serait construite pour définir une valeur seuil d’ANI permet- tant de prédire un BPS ≥ 5. Les données démographiques, physiologiques et les traitements ont été analysés. Résultats. 56 patients ont été inclus dans 2 centres. Il n’existe pas de corrélation entre l’ANI moyen ou instantané à T0 et le BPS à T1 (r2 à 0,0004), ni aux autres temps. Le BPS et l’ANI varient significativement entre T0 et T1, entre T1 et T2, mais pas entre T0 et T2. Un seuil d’ANI permettant de discriminer un BPS ≥ 5 n’est pas trouvé. Conclusion. Dans notre étude en réanimation polyvalente, l’ANI n’a pas pu prédire l’apparition d’une douleur. L’ANI et le BPS varient significativement lors d’une douleur standardisée, mais les variations mesurées ne sont pas corrélées. La présence de patients cérébro-lésés, avec possible dysrégulation du système nerveux autonome, pourrait expliquer cette absence de corrélation
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