1,721,017 research outputs found
Chromosomal localization of murine ryanodine receptor genes RYR1, RYR2 and RYR3 by in situ hybridization.
No full textClose linkage of fragile X-mental retardation syndrome to haemophilia B and transmission through a normal male.
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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
Cloning, chromosomal localization and identification of polymorphisms in the human thyroid transcription factor 2 gene (TITF2).
No full textCloning, chromosomal localization and identification of polymorphisms in the human thyroid transcription factor 2 gene (TITF2).
No full textThyroid nuclear factor 1 (TTF-1) contains a homeodomain and displays a novel DNA binding specificity.
No full textA novel X gene with a widely transcribed Y-linked homologue escapes X-inactivation in mouse and human
No full textA new gene, designated Smcx, was cloned from the mouse X chromosome by its homology to the Y located gene Smcy. Using direct in situ hybridisation Smcx was mapped to the distal end of the mouse X chromosome (XF2-XF4) and its human homologue, SMCX, was mapped to proximal Xp (Xp11.1-Xp11.2). Further meiotic mapping in the mouse placed Smcx in the Plp-Pdha1 interval. As Smcx/SMCX have widely expressed homologues on the Y chromosome, they appeared good candidates for genes that escape X-inactivation. In the human we show this to be the case as SMCX is expressed in hamster-human hybrids containing either an active or inactive human X chromosome. Two alleles of Smcx were found to be expressed in T(16;X)16H female mice despite the intact X chromosome being inactive in all cells. This indicates that Smcx is also not subject to X-inactivation and provides the first example of a gene that is expressed from inactive and active X chromosomes in the mouse
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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