1,720,994 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
Health services utilization and its determinants in the context of recession: evidence from Greece.
No full textBACKGROUND: In 2009, Greece entered a prolonged economic recession and adopted austerity reforms, which have profoundly affected many aspects of health sector, including health services use. The objective of this study was to investigate healthcare utilization in the Greek population in the context of austerity and its determinants. METHODS: Two National Health Surveys of the population aged 15 and over, conducted in 2009 and 2014-before and after the adoption of austerity measures-, were used to analyse possible changes in healthcare utilization and its determinants applying chi-square tests, Mann-Whitney U-tests and generalized linear models. RESULTS: Between 2009 and 2014, the share of those who had visited a specialist decreased, whereas that of those who had visited a general practitioner or had been hospitalized did not change significantly. The number of outpatient consultations decreased and the number of nights spent in hospital did not change significantly. The strongest predictors were self-rated health, presence of chronic diseases and experiencing pain. CONCLUSIONS: Identifying the procyclical or counter-cyclical nature of healthcare utilization and the association between utilization and its determinants in different settings is an important priority in order to improve access and promote health equity
The effects of economic crisis on the demand and supply of the dental services in Greece
No full textAn estimate of lifelong costs and QALYs in renal replacement therapy based on patients' life expectancy
No full textObjectives To estimate lifelong costs and quality adjusted life years (QALYs) of hemodialysis (HD), peritoneal dialysis (PD) and renal transplantation (Tx) in Greece, based on individual patient life expectancy.Methods A nationally representative patient sample on each modality, HD: NÂ =Â 642, PD: NÂ =Â 65 and Tx: NÂ =Â 167, was self-administered the SF-36 Health Survey, from which the preference-based SF-6D utility index was derived. Lifelong QALYs were estimated from literature-based expected remaining life years according to age, gender and modality. Cost analyses were performed from the perspective of the health system. Costs and QALYs were discounted at 5% and sensitivity analyses were performed.Results Estimated lifelong QALYs were 4.37 (HD), 3.94 (PD) and 16.11 (Tx) (PÂ
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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