1,721,532 research outputs found
Bilateral disciform keratitis: A rare feature of Reiter′s syndrome
No full textReiter′s syndrome is a relatively rare seronegative spondyloarthropathy characterized by a triad of urethritis, arthritis, and conjunctivitis. Human leukocyte antigen B27 (HLA B27) is positive in over two-thirds of the patients. Involvement of the cornea in the form of a bilateral disciform keratitis in a first episode of Reiter′s is an extremely rare feature, with only one previous report. Other report indicates the occurrence of disciform keratitis in patients with chronic recurring episodes of Reiter′s syndrome. We report acase of a young girl who developed bilateral disciform keratitis against a clinical background of arthritis of the left knee. There was preceding history of acute infective diarrhea, 1 month earlier. Initially, the keratitis was thought to be viral, but response to antiviral treatment was poor. A clinical suspicion of Reiter′s syndrome was confirmed by a positive HLA B27 test. Definitive treatment with steroids and sulfasalazine resulted in resolution of the keratitis
Wolf (Friedrich August). Ein Leben in Briefen. Die Sammlungbesorgt und erlautert durch Reiter (S.)
No full textHombert Marcel. Wolf (Friedrich August). Ein Leben in Briefen. Die Sammlungbesorgt und erlautert durch Reiter (S.). In: Revue belge de philologie et d'histoire, tome 17, fasc. 1-2, 1938. pp. 294-300
Wolf (Friedrich August). Ein Leben in Briefen. Die Sammlungbesorgt und erlautert durch Reiter (S.)
No full textHombert Marcel. Wolf (Friedrich August). Ein Leben in Briefen. Die Sammlungbesorgt und erlautert durch Reiter (S.). In: Revue belge de philologie et d'histoire, tome 17, fasc. 1-2, 1938. pp. 294-300
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
Dynamics of dust and meteoroids due to electromagnetic transport in the heliosphere
No full textObservations of dust in the Solar system have indicated the existence of structures at higher ecliptic latitudes, the origin of which is still an ongoing debate. In a previous study, we studied how the interplanetary magnetic field affects the orbital motion of charged dust particles that are moving in co-orbital motion with Jupiter. Our findings revealed that the Lorentz force causes oscillations in orbital inclinations that lead to electromagnetic transport of the dust particles to higher ecliptic latitudes. In this work, using numerical simulations, we investigate how this transportation depends on orbital lifetime, strength of the background magnetic field, planetary mass, and distance from the Sun. In addition, we study the dynamics also outside resonance. We present our findings using the saturation curve, which gives a relation between the maximum amplitude in inclination with respect to the particle size ranging from 1 to 501 m. We further study the influence of the solar radiation pressure, the Poynting-Robertson, and the solar wind effects on the shape of the saturation curve and find that a stronger gravitational influence of the planet leads to a steeper curve, decreasing the strength of the electromagnetic transport. The radiative forces lead to a gradual dampening of the latitudinal oscillations of particles inside resonance, while they are unchanged for objects outside of resonance. We argue that the dynamics of dust and meteoroids in the Solar system can only be understood by including space weathering effects
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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