1,721,428 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
PARTIAL GASTRECTOMY AND SUBSEQUENT GASTRIC-CANCER RISK
No full textStudy objective - The aim was to analyse the relationship between partial gastrectomy and gastric cancer risk. Design - This was a case control study, using a structured questionnaire to obtain problem orientated medical history and sociodemographic data. Setting - The study was conducted in a network of hospitals in the Greater Milan area between january 1985 and February 1990. Subjects - Subjects were 563 incident cases of histologically confirmed gastric carcinoma (347 males, 216 females, median age 60 years, range 28 to 74) and 1501 controls (885 males, 626 females, median age 58 years, range 23 to 74) in hospital for acute, non-neoplastic, non-digestive-tract disorders. Less than 3% of cases or controls refused to be interviewed. Measurements and main results -Relative risks (RR) and the corresponding 95% confidence intervals (CI) were determined, adjusted for age and sex plus area of residence, education, and smoking when specified. Within 20 years after gastrectomy, the relative risk of gastric cancer was not significantly raised (RR = 1.2, 95% CI 0.5-2.8), but a positive association emerged after longer time intervals. The RR was 1.6 (95% CI 0.7-4.1) after 20 to 29 years, and 3.5 (95% CI 1.3-10.0) after 30 years or more. These results were consistent in the two sexes and in the subsequent age groups, and not materially influenced by allowance for a number of identified potential confounding factors using multivariate analysis. Conclusions - The risk of gastric cancer is increased in the long term (20 years or more) after gastrectomy. This is explainable in terms of increased intragastric carcinogen formation following gastrectomy, and/or potential similarities in aetiological correlates of gastric ulcer and carcinoma of the stomach
Considerations in the combination of clozapine and benzodiazepines
No full textSerious adverse events and even sudden death have been reported during administration of the combination of clozapine and benzodiazepines. However, this combination does not necessarily result in increased frequency of serious adverse events. Thus it is not regarded as an absolute contraindication and might be useful in distinct clinical situations, e.g., during the occurrence of a malignant neuroleptic syndrome, "catatonic dilemma," or severe agitation during clozapine treatment. In the following report, certain suggestions on how to deal with this combination therapy are provided which may provide a basis for discussion that ultimately may lead to the formulation of guidelines for this combination therapy. Such guidelines may help psychiatrists in dealing with this combination in clinical situations. Moreover, the formulation of such guidelines would help with forensic issues in case of serious adverse events occurring during this combination therapy
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
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
- …
