1,721,042 research outputs found
La Extensión Universitaria interdisciplinaria como nexo de ida y vuelta con la sociedad
Full text linkMobile phone radiation and brain cancer at the dawn of the 5G era
Full text linkThere is great controversy regarding the long-term health risks associated with radio frequency electromagnetic radiation. A systematic review was conducted in order to assess non-thermal effects of these emissions in the human body. The 0.08W/kg limit on the specific absorption rate over the whole body suggested by the International Commission on Non-Ionizing Radiation Protection guarantees that mobile phones will not cause a harmful body temperature increase. Nevertheless, some studies claim that exposure to radio frequency electromagnetic fields may increase the risk of developing a brain tumor. Ongoing research might help to mitigate some of the confusion surrounding this topic. The beginning of the 5G era urges us to question whether the emission limits established more than 20 years ago by the International Commission on Non-Ionizing Radiation Protection are still valid.Existe gran controversia respecto a cuáles son los efectos de los campos electromagnéticos de radiofrecuencia sobre el cuerpo humano a largo plazo. Se realizó una revisión sistemática para recolectar información acerca del impacto de la exposición a estos campos sobre la salud de las personas. El límite de 0.08W/kg para la tasa de absorción específica media de cuerpo entero propuesto por la Comisión Internacional de Protección contra las Radiaciones No-Ionizantes garantiza que las emisiones de los teléfonos móviles no provocarán un aumento de temperatura nocivo en las personas. No obstante, hay estudios que afirman que la exposición a los campos electromagnéticos de radiofrecuencia puede aumentar el riesgo de padecer tumores cerebrales. Investigaciones en marcha reúnen el esfuerzo de varios países para mitigar la confusión que rodea este tema. El comienzo de la era 5G motiva a cuestionarse si los límites de emisión, establecidos hace más de 20 años por la Comisión Internacional de Protección contra las Radiaciones No-Ionizantes, siguen aún vigentes en la actualidad
Bioimpedance plethysmography with capacitive electrodes and sole force sensors : Comparative trial
Full text link4th Latin American Conference on Bioimpedance 2021 (CLABIO 2021) 10-13 November 2021, San Luis Potosí, Mexico
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
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