1,721,251 research outputs found
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
Maffucci's syndrome: Systemic enchondromatosis and hemangiomatosis
No full textMaffucci's syndrome consists of multiple enchondromata (as Ollier's disease) and subcutaneous and visceral hemangiomata. The authors report here a case and make a review of the most important complications, with special regard to the malignant evolution (23%) of the disease
General reliability assessment via the physics-based
No full textThe paper presents a general purpose new methodology, alternative to classical approaches like Montecarlo, FORM and SORM, making use of nominal values and standard deviation values of physical parameters of any physical process. This new assessment methodology has made it possible the creation of a software tool easy to use and able to simulate and manipulate analytically any time dependent and time independent physical process and is able to manage matrixes both with real and complex parameters. Two case studies are shown
Now you see it, now you don’t: variable hemineglect in a commissurotomized man.
No full textWe describe the case of a callosotomized man, D.D.V., who shows unusual neglect of stimuli in the left visual field (LVF). This is manifest
in simple reaction time (RT) to stimuli flashed in the LVF and in judging whether pairs of filled circles in the LVF are of the same or different
color. It may reflect strong left-hemispheric control and consequent attention restricted to the right side of space. It is not evident in simple RT
when there are continuous markers in the visual fields to indicate the locations of the stimuli. In this condition, his RTs are actually faster to
LVF than to right visual field (RVF) stimuli, suggesting a switch to right-hemispheric control that eliminates the hemineglect. Neglect is also
not evident when D.D.V. responds by pointing to or touching the locations of the stimuli, perhaps because these responses are controlled by the
dorsal rather than the ventral visual system. Despite his atypical manifestations of hemineglect, D.D.V. showed evidence of functional
disconnection typical of split-brained subjects, including prolonged crossed–uncrossed different in simple reaction time, inability to match
colors between visual fields, and enhanced redundancy gain in simple RT to bilateral stimuli even when the stimulus in the LVF was neglected
Simulation of Experimental Tests in Electronic Devices
No full textA predictive reliability analysis is shown in this paper. Also referring to other previously published articles, based on a mathematical methodology developed by ItalConsul with the collaboration of the University of Rome3, the predictive reliability capacity of the Relysoft software is illustrated. Its task is to perform predictive calculations of the probability of success of any physical process to replace experimental tests with huge savings in time and cost. In this work, the application to a Graetz bridge is illustrated
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