1,721,015 research outputs found
Levi e l'analogia
No full textChimico e scrittore: lo sapevamo bene. Etologo e antropologo: ne sapevamo poco. I mestieri di Primo Levi sembrano così moltiplicarsi: felicemente e rigorosamente. E se considerati con una certa attenzione appaniono molto meno mestieri del prevedibile
Pasolini
No full textUno studio complessivo sugli specifici rapporti intertestuali (e in senso lato culturali) tra l'opera di Pier Paolo Pasolini e quella di Goffredo Parise
Distrubution of cataract types in the Italian-American Case-Control study and at surgery in the Parma Area
No full text
Distribution of Cataract Types in the Italian-American Case-control Study and at Surgery in the Parma Area
No full textPurpose: To compare the distribution of cataract types at surgery with the distribution detected in an ophthalmology clinic-based case-control study in the same geographic area (Parma, Italy). Methods: The distribution of cataract type assessed according to the Lens Opacities Classification System I in 284 consecutive patients 45 years of age or older, who were admitted for cataract surgery to the Institute of Ophthalmology in Parma during 1994, was compared with the distribution assessed in 1008 participants in the Italian-American case-control study of age-related cataract in the Parma metropolitan area from 1987 to 1989. Results: Analysis of cataract distribution indicates in the surgical group, compared with the case-control population, a significant increase of nuclear (N) and posterior subcapsular (PSC) opacities (any), a reduction of pure forms of cortical and N cataracts, and a marked increase of mixed types of opacities with a simultaneous N and PSC component. Conclusion: Although cortical opacities are probably the most prevalent type of age-related lens change in the general population of Parma metropolitan area, the type of cataract most frequently responsible for the decision of patients to undergo cataract surgery is a mixed type of opacity with an N-PSC component
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
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