1,720,961 research outputs found
Lighting quality for home-working spaces: a survey
No full textThe paper presents a survey to investigate the typical characteristics of the luminous environment of workstations organized in private houses and to test people’s average awareness about their choices regarding lighting conditions settings. The research has been carried out on a survey sample made up of home workers and students who were forced to work at home because of the pandemic constraints. Daylight and electric light characteristics in home working spaces are inquired: their description, control systems and overall evaluation are shown. Results are presented and discussed
Assessment of melanopsin-based quantities: Comparison of selected design tools and validation against on-field measurements
No full textMelanopsin-based quantities (circadian stimulus and melanopic illuminance) depend on the spectral irradiance at the eye level, in turn resulting from the light sources' spectral power distribution and the interactions between light and materials. Software used in design practice (as DIALux) do not consider light and materials' spectral characteristics. Consequently, circadian stimulus and melanopic illuminance are calculated based on the illuminance at the eye and the sources' spectrum. Although software including spectral interactions (as ALFA - Adaptive Lighting for Alertness) exist, it is not clear how much the accuracy of various modelling approaches affects melanopsin-based quantities assessment. This research aims at investigating the applicability of the popular lighting design software for evaluating non-visual effects. For this purpose, two different approaches, based on the use of ALFA (method A) and DIALux (method B) are described, validated against on-field measurements and compared. Spectral irradiance is measured at the work plane and at the eye in a test room where the walls' finishes and the luminaires’ spectrum are changed, obtaining 21 scenarios. When simulating the space with the two methods, acceptable results are obtained for horizontal illuminance (percentage errors within the range ±10%), whereas for the vertical plane, errors depend on the software and the lighting scenario. Overall, method A performs better than B, but it gives percentage errors trespassing ±10% in 38.10% and 52.38% of the scenes in estimating circadian stimulus and melanopic illuminance respectively. This research informs ALFA and DIALux users on the reliability of both simulation tools in melanopsin-based quantities evaluation
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
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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