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Sessile droplets on a curved substrate: effects of line tension
No full textThe equilibrium and stability of a sessile droplet laid on a spherical substrate
in the presence of line tension are studied within a continuum approach. The
destabilizing role played by the substrate’s curvature is analysed in detail for
both positive and negative line tensions. In the former case, several bifurcation
diagrams exist which show, among other things, that stable equilibria can fail
to exist when the droplet size, the substrate size and the ratio between the line
and the surface tension are comparable to one another. When line tension
is negative, the substrate’s curvature enhances the destabilization of sessile droplets
Poincaré’s physics : ‘Conventionalism’ and the dispute regarding the Relativity priority
No full textOn the Nature of Moral Conflicts
No full textIn this paper we make use of the idea that the emotional devices are essential mechanisms in the process of moral judgment formation, in order to support a more general thesis regarding the nature of the moral choice. From the assumption that moral choices are always the result of a compromise between individual interests and social motivations, our
aim is to defend the idea that the achievement of this compromise is the final product of a competition process between different processing systems, and that the whole process is
orchestrated by emotions. This conclusion stems from data regarding the study of moral dilemmas. In fact, moral dilemmas require an evaluation among interests in competition,
between concomitant options which are based on opposite motivations, and thus they highlight the conflict that characterizes, at different levels, the expression of any judgment
of moral appropriateness
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
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