1,721,062 research outputs found
CW laser annealing amorphous Fe40Ni40P14B6: effect on magnetostriction and Young modulus
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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
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
Serum proteins and work habits in a group of farm-workers exposed to EBDCs
No full textBackground: Study of the association between genetic variability and individual susceptibility can help
to characterize occupational or environmental risks due to xenobiotics.
Aim: This study evaluates the influence of genetic components and environmental factors in relation to
pesticide exposure.
Subjects and methods: The study population consisted of 37 non-occupationally exposed workers and 74
farm-workers exposed to pesticide. Exposure was assessed through the measurement of urine concentration
of ethylenethiourea (ETU). Genetic differences in drug metabolism were detected by a qualitative
variability in serum proteins. The environmental factors were recorded by using a questionnaire.
Results: The results show a difference between ETU levels in farm-workers and in non-occupationally
exposedworkers. Inthenon-exposedgroupa relationshipbetweenETUurinaryconcentrationandlifestyle
habits is present. In farm-workers ETU urinary concentration is less correlated with lifestyle habits, but is
associated, rather, with their work. In the exposed individuals the serum protein analyses show a possible
link between ETU urinary concentration and the polymorphism of group-specific component (Gc).
Conclusions: The association between Gc polymorphism and ETU urinary concentration of subjects
exposed to EBDCs could be due to the immunological function of Gc and the effects on the immune
system of EBDCs
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Glutathione S-transferase ω class (GSTO) polymorphisms in a sample from Rome (Central Italy).
No full textGlutathione S-transferases are a superfamily of enzymes that are involved in biotransformation of
drugs, xenobiotics and play a fundamental role in the protection of cells from oxidative stress. In
humans, the recently described GST Omega class contains two expressed genes GSTO1 and GSTO2,
located on chromosome 10 (10q24.3). Four polymorphisms in GSTO genes have been identified
in ethnic groups: GSTO1*A140D (rs4925), GSTO1*E155del (rs56204475), GSTO1*E208K
(rs11509438) and GSTO2*N142D (rs156697). This study provides the allele frequencies of
GSTO polymorphism in a sample consisting of 116 apparently healthy individuals of both sexes
from Rome (Central Italy). Detection of GSTO1*A140D and GSTO2*N142D alleles was performed
by PCR-RFLP analysis, while GSTO1*E155del and GSTO1*E208K alleles were detected using the
Confronting Two-Pair Primers analysis (PCR-CTPP) and allele specific PCR, respectively. The
GSTO allele frequencies found in the Italian sample were included in the variability range observed
in European populations. Comparison between the data presented in this study and data in previous
studies showed different patterns among European, Asian and African populations
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