1,722,989 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
The Impact of Myocardial Protection Technique on the Incidence Of -post Coronary Bypass- Atrial Fibrillation/flutter
No full textThe Impact Of Myocardial Protection Technique On The Incidence Of -post Coronary Bypass- Atrial Fibrillation/flutter
Ayman Kenawy, Laura Howell, David Rose, Mohamed N. Bittar, Antony Walker, Andrew Duncan, Josef Zacharias, Amal Bose, Mohamed N. Bittar.
Blackpool Victoria Hospital, Blackpool, United Kingdom.
OBJECTIVE: To determine whether any of the myocardial protection techniques is a factor that influence the incidence of post-operative AF/Flutter
METHODS: A single centre retrospective study of 3614 patients who underwent an isolated on-pump CABG using different myocardial protection strategies, inclusion criteria all CABG who were in Sinus rhythm pre operatively. Patient who had combined procedures or were in AF or paced rhythm were excluded. Patients were categorized into two groups: Group 1: cardioplegia group Group 2: cross- clamp and fibrillation Statistical analysis Comparisons between groups were made using a Chi-square test or Fisher’s exact test for categorical variables and using one-way ANOVA or Kruskal-Wallis for quantitative variables. Univariate logistic regression analysis was then performed to identify potential risk factors of post-operative AF/flutter. Potential confounding risk factors were then included in an adjusted multivariate logistic analysis
RESULTS: We identified 3614 patients in the period between 2004 to 2015 ; 2805 were in group 1 and 809 were in group 2. History of pulmonary disease & older age were significant potential predictors of post-operative AF (p=0.002, OR=1.40, 95% CI=1.13 to 1.73), (p=<0.001, OR=1.06, 95% CI= 1.05 to 1.07) respectively.On the contrary,cumulative cross clamp time and cumulative bypass time were not significant predictors of post-operative AF (p=0.285,p=0.470) respectively. In the cardioplegia group the incidence of AF in top ends on side clamp was not significantly different to single x-clamp surgery (OR=1.05, 95% CI=0.81 to 1.37, p=0.709) Group 2 patients (x-clamp and fibrillation technique) had higher incidence of developing post-operative AF which remained significantly high after adjusting to the history of pulmonary disease when compared with group 1 (OR=1.31, 95% CI=1.02 to 1.68, p=0.032), there was no significant difference in the age between the 2 groups also No significant differences were found in terms of the secondary outcomes mortality,CITU stay or post-operative length of stay.
CONCLUSIONS: Cross clamp fibrillation technique is associated with significantly higher incidence of AF. The history of pulmonary disease and age were strong predictors of postoperative A
Cleavable conjugates of antibiotics and an antibacterial cell-penetrating peptide
No full textThe present disclosure relates to novel cleavable conjugates of antibiotics and an antibacterial cell-penetrating peptide, and methods to make and use the novel cleavable conjugates of antibiotics and an antibacterial cell-penetrating peptide
Antibacterial cell-penetrating peptides
Get PDFThe present disclosure relates to novel antibacterial cell penetrating peptides and derivatives, and methods to make and use the novel antibacterial cell-penetrating peptides and derivatives. The novel antibacterial cell-penetrating peptides of the present invention with shorter linker between a pyrrolidine ring and a guanidine group provide unexpectedly higher potency against a broader scope of bacterial
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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