1,720,958 research outputs found
: Adozioni dall’Europa orientale: problemi vaccinali ed infettivi. Quaderni di Pediatria 4(1):234,2005
No full textSequele oftalmologiche a lungo termine dopo ricostruzione chirurgica del pavimento orbitario
No full text
Long-term outcome after conservative treatment of indirect traumatic optic neuropathy
No full textPURPOSE. To report the long-term outcome of patients with indirect traumatic optic neuropathy
(TON) which showed useful vision for a short period after trauma.
METHODS. A cohort of 12 TON patients treated with steroids megadose immediately after
trauma was followed every 6 months for an overall period of 5 years. Other than a full neuro-
ophthalmologic examination, each visit included quantitative Goldmann perimetry and
pattern reversal visual evoked potentials. The results of each examination were compared
with the visual function at baseline. The main outcome measures were visual acuity and visual
field. Data were analyzed using the Wilcoxon signed-rank test. A p value of less than
0.05 was considered statistically significant.
RESULTS. All patients showed a stable visual function 5 years after optic nerve trauma. There
was no difference in visual acuity levels (p=0.65) and no visual field surface area between
the visit at baseline and the last follow-up. However, a significant improvement in visual
field extension (p=0.036) was observed after perimetry evaluation.
CONCLUSIONS. This cohort of patients clearly demonstrates that the residual visual function
found in the short term after TON is maintained for at least 5 years. These findings add further
important clinical information for patients with TON. Furthermore, these data may be
helpful to better quantify morbidity related to optic nerve trauma and its permanent sequela
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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