1,722,577 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Pattern and variation of C:N:P ratios in China’s soils : a synthesis of observational data
Get PDFAuthor Posting. © The Author(s), 2009. This is the author's version of the work. It is posted here by permission of Springer for personal use, not for redistribution. The definitive version was published in Biogeochemistry 98 (2010): 139-151, doi:10.1007/s10533-009-9382-0.Inspired by previous studies that have indicated consistent or even
well-constrained relationships among carbon (C), nitrogen (N) and phosphorus (P) in
soils, we have endeavored to explore general soil C:N:P ratios in China on a national
scale, as well as the changing patterns of these ratios with soil depth, developmental
stages and climate; we also attempted to determine if well-constrained C:N:P
stoichiometrical ratios exist in China’s soil. Based on an inventory data set of 2,384
soil profiles, our analysis indicated that the mean C:N, C:P and N:P ratios for the entire
soil depth (as deep as 250 cm for some soil profiles) in China were 11.9, 61 and 5.2,
respectively, showing a C:N:P ratio of ~60:5:1. C:N ratios showed relatively small
variation among different climatic zones, soil orders, soil depth and weathering stages,
while C:P and N:P ratios showed a high spatial heterogeneity and large variations in
different climatic zones, soil orders, soil depth and weathering stages. No
well-constrained C:N:P ratios were found for the entire soil depth in China. However,
for the 0-10 cm organic-rich soil, where has the most active organism-environment
interaction, we found a well-constrained C:N ratio (14.4, molar ratio) and relatively
consistent C:P (136) and N:P (9.3) ratios, with a general C:N:P ratio of 134:9:1.
Finally, we suggested that soil C:N, C:P and N:P ratios in organic-rich topsoil could be
a good indicator of soil nutrient status during soil development.This study was supported by NASA Interdisciplinary Science
Program (NNG04GM39C), NASA Land Cover and Land Use Change Program
(NNX08AL73G_S01), and the Chinese Academy of Science ODS Program
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe 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
Congressional Record S. 9382 - Speech on Commemoration of Loss and Suffering of the Dead and Wounded Members of the Armed Forces Occasioned by the War in Vietnam
Get PDFCongressional Record S. 9382 - Speech on Commemoration of Loss and Suffering of the Dead and Wounded Members of the Armed Forces Occasioned by the War in Vietna
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
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