1,720,976 research outputs found
Colour blindness (CB) distribution in the male population of Albanian and Croatian communities of Molise, Italy (with a review of the published Caucasoid CB gene frequencies).
No full textAll the secondary school students of the Albanian and Croatian communities of Molise were tested for colour vision. Percent frequencies of red-green colour blindness were 5.91 +/- 1.73 and 7.02 +/- 3.38. These figures are in agreement with those found for Central Italy thus confirming the similarity of these communities with the rest of Italy as described for several other autosomal polymorphisms. The distribution of red-green CB genes in Europe shows that they are slightly more frequent in Northern Europe than in Southern Europe and Northern Africa
Problemi di chirurgia oculare nella sindrome di Lowe.
No full textSi descrive un caso di Sindrome di Lowe con presenza di cataratta e dermoide corneale associato. Si mettono in evidenza le problematiche di chirurgia oculare
Simultaneous Binocular Integration of the Visual Tilt Effect in Normal and Stereoblind Observers
No full textSimultaneous binocular integration of the visual tilt effect in normal and stereoblind observers
No full textApparent displacement of an edge from the subjective visual vertical is typically induced by the simultaneous inspection of a large rotating textured background. In the present series of experiments we have tested the binocular integration of such an effect in normal and stereoblind observers in whom inspection of the rotating background and vision of the vertical edge are presented to different eyes. In normal subjects there was no difference between the binocular and the dichoptic viewing condition while in stereoblind subjects there was a clearcut decrease in the strength of the tilt effect under dichoptic conditions. A residual tilt effect, however, was still present in the latter group under dichoptic conditions and this shows that binocular interactions related to visual tilt can be dissociated from those required for stereopsis. © 1986
Causes of reduced visual acuity on long-term follow-up after cataract extraction in patients with uveitis and juvenile rheumatoid arthritis.
No full text
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
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