1,720,964 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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
Diagnostic criteria and clinical implications of bronchopulmonary aspergillosis in children with cystic fibrosis
Get PDFIntroducere. FC afecţiune monogenică cu transmitere AR. Colonizarea cu Af joacă rol semnificativ în agravarea simptomatologiei respiratorii şi declanşarea exacerbărilor de boală. Diagnosticul precoce şi tratamentul adecvat sunt esenţiale pentru prevenirea deteriorării funcţiei pulmonare şi îmbunătăţirea calităţii vieţii. Scop. Identificarea unor teste diagnostice pentru aspergiloza bronhopulmonară alergică (ABPA) la copiii cu fibroză chistică şi evaluarea impactul acesteia asupra evoluţiei bolii pulmonare. Material şi metode. Studiul a preconizat analiza datele clinice şi par-aclinice a 56 de pacienţi cu Fibroză chistică, dintre care 18 pacienţi (32%) au fost diagnosticaţi cu Aspergiloză bronhopulmonară alergică conform criteriilor clinice, imagistice şi imunologice. Dintre pacienţii incluşi în studiu, 55% de sex masculin şi 45% de sex femenin. Rezultate. Criteriile clinice la pacienţii cu FC: tuse productivă persistentă 89%, dispnee 66%, fatigabilitate 44%, pierderea ponderală 22%. Niveluri crescute de IgE total (>500 UI/mL) înregistrate la 83 %,anticorpii specifici IgE/IgG anti-Af detectaţi la 72%, eozinofilia periferică (500 cel/mm3) prezentă în 55 % cazuri. Radiografia cutiei toracice a evidenţiat modificări nespecifice în 60% cazuri. Explorările imagistice prin CT pulmonară au identificat modificări: opacităţi nodulare, semnul halo, infiltrate perihilare, bronşectazii cilindrice, cavităţi pulmonare. Diagnosticul a întârziat la 50% pacienţi din cauza suprapunerii cu exacerbările bacteriene. Concluzii. Diagnosticarea ABPA la copiii cu FC rămâne dificilă, necesită corelarea markerilor serologici cu imagistica. IgE totală/specifică sunt utile pentru screening, dar confirmarea necesită CT toracic. Strategii mai sensibile pot permite detectarea precoce şi îmbunătăţirea funcţiei pulmonare a pacienţilor.Introduction. CF is a monogenic condition with AR transmission. Colonization with Aspergillus plays a significant role in worsening respiratory symptoms and triggering disease exacerbations. Early diagnosis and adequate treatment are essential for preventing deterioration of lung function and improving quality of life. Objective. To identify diagnostic tests for allergic bronchopulmonary aspergillosis (ABPA) in children with cystic fibrosis and to assess its impact on the progression of pulmonary disease. Material and methods. The study aimed to analyze the clinical and paraclinical data of 56 patients with cystic fibrosis, of whom 18 patients (32%) were diagnosed with Allergic bronchopulmonary aspergillosis based on clinical, imaging, and immunological criteria. Among the included patients, 55% patients were male and 45% patients were female. Results. The predominant clinical criteria in CF patients: persistent productive cough (89%), dyspnea (66%), fatigue (44%), and weight loss (22%). Elevated total serum IgE levels (>500 IU/mL) were recorded in 83%, and specific IgE/IgG antibodies against Aspergillus fumigatus were detected in 72%. Peripheral eosinophilia (>500 cells/mm3) was present in 55%. Chest X-rays revealed nonspecific changes in 60% cases. Pulmonary CT imaging identified structural lung abnormalities: nodular opacities, halo sign, perihilar infiltrates, cylindrical bronchiectasis, pulmonary cavities. Diagnosis was delayed in 50% of patients due to overlap with bacterial exacerbations. Conclusion. Diagnosis of ABPA in children with CF remains challenging, requiring correlation of serological markers with imaging. Total/specific IgE are useful for screening, but confirmation requires chest CT. More sensitive strategies may allow early detection and improvement of patients’ lung function
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