1,720,962 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
Dietary calcium intake in primary hyperparathyroidism and in its normocalcemic variant: a case-control study
Full text linkIntroduction: Normocalcemic primary hyperparathyroidism (NHPT) is considered to be an early stage in the evolution of primary hyperparathyroidism (PHPT). To formulate a correct diagnosis, secondary hyperparathyroidism due to low calcium intake must be excluded. Whether dietary calcium intake might affect the clinical presentation of PHPT or NHPT has never been addressed consistently. Objective: To describe patients with a diagnosis of NHPT or PHPT in relation to their calcium intake, through three standard validated questionnaires; to describe clinical, biochemical and radiological features of NHPT and PHPT patients compared to each other and to a control group. Design: Cross-sectional study. Setting: Outpatient, single academic medical center. Patients: 109 consecutive women recruited from February 2021 through April 2023. 54 patients with mild primary hyperparathyroidism (PHPT or NHPT) were age-matched with 55 unselected women undergoing bone density test screening due to recently diagnosed hormone-positive breast cancer. NHPT diagnosis was based on multiple determinations of both total and albumin-corrected serum calcium. Interventions: Administration of all the following during routine endocrine consultation: a country-specific food-frequency questionnaire (LOC), the International Osteoporosis Foundation Calcium Calculator (IOF) and the National Osteoporosis Foundation calcium questionnaire (NOF). Main outcome measures: Any association between dietary calcium intake and clinical, radiological, or biochemical features. Results: All three questionnaires confirmed that NHPT patients had similar calcium intake as those with PHPT or controls. Biochemistries and bone turnover markers were similar between the two variants of hyperparathyroidism, except for serum calcium (sCa). NHPT patients had a significantly lower BMD and T-score at one-third distal radius compared to PHPT, while the prevalence of nephrolithiasis and clinical fractures were similar. Multivariate analysis investigating predictors of serum calcium showed that age, eGFR, calcium intake and 25(OH)D did not significantly affect serum calcium, while multivariate analysis investigating predictors of PTH (age, variant NHPT vs. PHPT, eGFR, calcium intake, 25(OH)D, cholecalciferol supplements) showed that calcium intake, variant and renal function, significantly influenced PTH levels. Conclusions: All patients with primary hyperparathyroidism, particularly those with low dietary calcium intake, should be advised not to restrict dietary calcium to prevent further increase in PTH levels. Whether maintaining adequate calcium intake might positively impact bone density or biochemistries in patients refraining from surgery, should be addressed in longitudinal studies
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
Phosphate metabolism and pathophysiology in parathyroid disorders and endocrine tumors
No full textThe advent of new insights into phosphate metabolism must urge the endocrinologist to rethink the pathophysiology of widespread disorders, such as primary hyperparathyroidism, and also of rarer endocrine metabolic bone diseases, such as hypoparathyroidism and tumor‐induced hypophosphatemia. These rare diseases of mineral metabolism have been and will be a precious source of new information about phosphate and other minerals in the coming years. The parathyroid glands, the kidneys, and the intestine are the main organs affecting phosphate levels in the blood and urine. Parathyroid disorders, renal tubule defects, or phosphatonin‐producing tumors might be unveiled from alterations of such a simple and inexpensive mineral as serum phosphate. This review will present all these disorders from a ‘phosphate perspective’
- …
