1,720,960 research outputs found
50 años de la Escuela Industrial
No full textAsistentes de fotografía y producción: Hugo Abad, César Caprio, Mario Grasso, Iberia Gutiérrez y Germán Romani. 16 mm. blanco y negro; 21 minutos; 1960
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
Experimental evaluation of combined ageing and fading effects on annual radon concentration measurement based on nuclear track detectors
No full textThe effect of ageing and fading on solid-state nuclear track detectors (SSNTD), used for measuring radon concentrations,
leads to a decrease in the number of counted tracks and thus to an underestimation of actual radon
exposure. The ISO 11665–4:2020 standards for radon concentration measurements using passive devices make
no mention of “Ageing and Fading” effects among the “influence quantities” that can bias measurement results.
The present experimental study aimed to investigate the presence of the ageing and fading effects in typical
indoor environments for SSNTD, particularly for three different radon measurement techniques (detector and
track-readout systems). The first two techniques use Poly(allyl diglycol carbonate) (PADC) detectors, also known
commercially as CR-39, manufactured by Intercast Spa and Radosys Ltd respectively, while the third technique
uses a cellulose nitrate detector similar to LR-115 (manufactured by Dosirad-Kodak). For simplicity, throughout
this paper, these detectors will be referred to as CR-39 and LR-115, respectively. For the two different techniques
based on CR-39, track counting is done by a fully automated image analysis system, whereas with the LR-115, the
tracks are counted using a spark counter. The present study, following previous work, aimed to evaluate the
effects of ageing and fading on the three techniques over exposure periods of 3, 6, and 12 months. The findings
suggest that ageing and fading do not significantly impact the response of technique based on LR-115 and CR-39
detectors. However, for the technique based on CR-39 detectors produced by Radosys, a considerable underestimation
of the actual radon exposure was observed. Specifically, the results show that the measurement of
annual integrated radon exposure, decrease by approximately 10%, when performed using two consecutive 6-
month monitoring periods (2 detectors, one per semester) compared to four consecutive 3-month monitoring
periods (4 detectors, one per quarter). Similarly, a decrease of approximately 20% was observed in the annual
integrated radon exposure when performed using a single 12-month monitoring period (one detector in a year)
compared to four consecutive 3-month monitoring periods (4 detectors, one per quarter). These findings highlight
the importance of carefully considering the detector material and technique used for radon measurement,
particularly for extended measurement periods, and then considering the effects of ageing and fading when
developing future standards for radon concentration measurements
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
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