1,721,829 research outputs found
United States Foreign Intelligence Activities, Executive Order No. 12036, 43 FR 3674
No full textUnited States Foreign Intelligence Activities, Executive Order No. 12036, 43 FR 3674 ( Jan. 24, 1978)First page of documen
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
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
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
Authigenic iron oxide proxies for marine zinc over geological time and implications for eukaryotic metallome evolution
Get PDFAuthor Posting. © The Author(s), 2012. This is the author's version of the work. It is posted here by permission of John Wiley & Sons for personal use, not for redistribution. The definitive version was published in Geobiology 11 (2013): 295-306, doi:10.1111/gbi.12036.Here we explore enrichments in paleomarine Zn as recorded by authigenic iron oxides
including Precambrian iron formations, ironstones and Phanerozoic hydrothermal
exhalites. This compilation of new and literature-based iron formation analyses track
dissolved Zn abundances and constrain the magnitude of the marine reservoir over
geological time. Overall, the iron formation record is characterized by a fairly static range
in Zn/Fe ratios throughout the Precambrian, consistent with the shale record (Scott et al.,
2013, Nature Geoscience, 6, 125-128). When hypothetical partitioning scenarios are
applied to this record, paleomarine Zn concentrations within about an order of magnitude
of modern are indicated. We couple this examination with new chemical speciation
models used to interpret the iron formation record. We present two scenarios: first, under
all but the most sulfidic conditions and with Zn binding organic ligand concentrations
similar to modern oceans, the amount of bioavailable Zn remained relatively unchanged
through time. Late proliferation of Zn in eukaryotic metallomes has previously been
linked to marine Zn biolimitation, but under this scenario, the expansion in eukaryotic Zn
metallomes may be better linked to biologically intrinsic evolutionary factors. In this case
zinc’s geochemical and biological evolution may be decoupled, and viewed as a function
of increasing need for genome regulation and diversification of Zn-binding transcription
factors. In the second scenario, we consider Archean organic ligand complexation in such
excess that it may render Zn bioavailability low. However, this is dependent on Zn
organic ligand complexes not being bioavailable, which remains unclear. In this case,
although bioavailability may be low, sphalerite precipitation is prevented, thereby
maintaining a constant Zn inventory throughout both ferruginous and euxinic conditions.
These results provide new perspectives and constraints 50 on potential couplings between
the trajectory of biological and marine geochemical coevolution.This work was supported by a NSERC Discovery
Grant to KOK, a NSERC PDF to SVL, a NSERC CGSM to LJR, and an NSF-EAR-PDF
to NJP. MAS acknowledges support from the Gordon and Betty Moore Foundation Grant
#2724. This work was also supported by grants from the Deutsche
Forschungsgemeinschaft (DFG) to A.K. (KA 1736/4-1 and 12-1)
- …
