1,721,727 research outputs found
Implementação da norma ISO/IEC 17043:2010: relatório de monitorização 2016
No full textRelatório de monitorização relativo ao ano de 2016 sobre a implementação da norma ISO/IEC 17043:2010-Conformity assessment -- General requirements for proficiency testing. ISO/IEC 17043:2010 specifies general requirements for the competence of providers of proficiency testing schemes and for the development and operation of proficiency testing schemes. These requirements are intended to be general for all types of proficiency testing schemes, and they can be used as a basis for specific technical requirements for particular fields of application.N/
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
Proficiency testing according to standard EN-ISO/IEC 17043:2010 and advisory document EA-4/18:2010
No full textW artykule omówiono dwa opublikowane w 2010 r. nowe dokumenty dotyczące badań biegłości: PN-EN ISO/lEC 17043:2010 Ocena zgodności. Wymagania ogólne dotyczące badań biegłości (oryg.) oraz dokument EA-4/18 Wytyczne dotyczące poziomu uczestnictwa w badaniach biegłości.In 2010 year two new documents concerning general requirements for proficiency testing were published - the standard EN-ISO/IEC 17043:2010 Conformity assessment - General requirements for proficiency testing (supersedes ISO/IEC 43:1997 Guide) and advisory document EA-4/18:2010 Guidance on the level and frequency of proficiency testing participation. In this paper the basic principles estabilished in this documents are presented
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
Myocardial energetics and clinical response to the cardiotonic agent MDL 17043 in advanced heart failure
No full textCardiotonic agents may prove useful in the long-term treatment of chronic heart failure provided myocardial efficiency is enhanced and clinical status is improved. Accordingly, the short-term hemodynamic and clinical response to the phosphodiesterase inhibitor, MDL 17043, was evaluated. Intravenous increments of 0.05 mg/kg (maximal total 3 mg/kg) were given to a peak cardiac output response in 13 patients with New York Heart Association functional class IV heart failure secondary to ischemic or myopathic disease. Significant (p < 0.05) responses at peak effect (1.7 mg/kg) included an increase in cardiac output (3.5 to 4.6 liters/min) and heart rate (86 to 90 beats/min) and a decrease in pulmonary capillary wedge (25 to 17 mm Hg), mean arterial (85 to 78 mm Hg) and right atrial (10 to 7 mm Hg) pressures. Coronary sinus flow (measured in nine patients) increased (122 to 144 ml/min, p < 0.01) as did myocardial oxygen uptake (14.1 to 15.1 ml/min, p < 0.01), whereas myocardial extraction of oxygen (78 to 72%, p < 0.01) and lactate (24 to 9%, p < 0.01) decreased with three patients producing lactate at the time of their peak cardiac output response. Nine of the 12 patients given longterm oral therapy improved at least one functional class at 2 weeks. This improvement was sustained at 20 weeks in five patients.Thus, MDL 17043 acutely improves the function of the failing heart. However, the decrease in oxygen extraction occurring with increased myocardial oxygen uptake suggests that intracoronary shunting may occur along with an increase in oxygen demand and contribute to myocardial anaerobiosis in some patients. Hence, to assure an optimal response in myocardial energetics to MDL 17043, individual dose titration and hemodynamic monitoring are recommended
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
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