1,720,962 research outputs found
STRUCTURAL AND FUNCTIONAL STUDY OF PROTEINS INVOLVED IN THE ACCUMULATION AND PERCEPTION OF OLIGOGALACTURONIDES
Full text linkIn order to identify which residues of FvPG are responsible for the lack of recognition by PvPGIP2, I’ve tried to solve the 3D structure of this FvPG, through X-Ray crystallography analysis and compare the structures of those two PG.The 3D structure of WAK1 is not known: the Ser/Thr kinase domain is a tipical kinase domain with structural and biochemical features well characterized, (Pereira et al., 2011); in the ectodomain, only the two EGF-like domain have homologous protein present in the protein database, while the PBD has no homologous. Another aim of my work was to attempt the determination of the 3D structure of the entire ectodomain of WAK1 (eWAK1= PBD and EGF domains), by X-ray crystallography
A Comparison of Hand-wrist Bone and Cervical Vertebral Analyses in Measuring Skeletal Maturation
No full textObjective: To compare skeletal maturation as measured by hand-wrist bone analysis and by
cervical vertebral analysis.
Materials and Methods: A radiographic hand-wrist bone analysis and cephalometric cervical
vertebral analysis of 30 patients (14 males and 16 females; 7–18 years of age) were examined.
The hand-wrist bone analysis was evaluated by the Bjork index, whereas the cervical vertebral
analysis was assessed by the cervical vertebral maturation stage (CVMS) method. To define
vertebral stages, the analysis consisted of both cephalometric (13 points) and morphologic evaluation of three cervical vertebrae (concavity of second, third, and fourth vertebrae and shape of
third and fourth vertebrae). These measurements were then compared with the hand-wrist bone
analysis, and the results were statistically analyzed by the Cohen . concordance index. The same
procedure was repeated after 6 months and showed identical results.
Results: The Cohen . index obtained (mean . SD) was 0.783 . 0.098, which is in the significant
range. The results show a concordance of 83.3%, considering that the estimated percentage for
each case is 23.3%. The results also show a correlation of CVMS I with Bjork stages 1–3 (interval
A), CVMS II with Bjork stage 4 (interval B), CVMS III with Bjork stage 5 (interval C), CVMS IV
with Bjork stages 6 and 7 (interval D), and CVMS V with Bjork stages 8 and 9 (interval E).
Conclusions: Vertebral analysis on a lateral cephalogram is as valid as the hand-wrist bone
analysis with the advantage of reducing the radiation exposure of growing subjects
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
An interaction network mediated by the oligogalacturonides receptor WAK1 regulates Arabidopsis local response to wounding
No full textAn interaction network mediated by the oligogalacturonides receptor WAK1 regulates local response to wounding in Arabidopsis
No full text
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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