1,721,049 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
Stratigraphy, biostratigraphy, and chitinozoans of the uppermost Ordovician and Silurian of the Condroz Inlier
No full textExhaustive fieldwork in long stratigraphic sections in the Neuville-sous-Huy area (near Huy), allows
detailed lithostratigraphic descriptions of the formations, accurate location of macrofossil levels, and
of samples for palynological and thin section research. Similarly, the type areas of the Silurian
formations of the uppermost Ordovician and Silurian of the Condroz Inlier are studied.
For the biostratigraphy chitinozoans are mainly used together with graptolites. In total, 210 samples
were dissolved for palynological analysis. Some 7514 chitinozoan specimens were studied.
Unfortunately, the moderate state of preservation resulted in many specimens remaining
unidentified or recorded under open nomenclature, with no new taxa recognized in any assemblage.
However, the presence of many index species allowed to attribute samples to local or global
chitinozoan biozones.
Graptolites from previous collections and from new samples in 101 levels facilitated additional
accurate biozonation. In several cases the rare discovery of brachiopods aided the biostratigraphy.
The Vitrival-Bruyère and the Fosses formations crop out in four sections of the Tihange area. Three
members of the latter formation (Bois de Presles, Faulx les Tombes and Tihange) are described and
dated (Sandbian, Katian, Hirnantian to earliest Llandovery), as is the overlying newly described Bonne
Esperance Formation (Rhuddanian, Llandovery).
Four areas around Neuville-sous-Huy expose Aeronian to Ludlow formations: the ravine 1200 m east
and the ravine 700 m east of the Parc de la Neuville, the Parc de la Neuville, with a northern and a
southern part, and a section along a road 300 m west of the Parc de la Neuville. The Génicot
Formation is identified here for the first time in the north-eastern part of the Condroz Inlier and
dated with chitinozoans as middle Aeronian, Llandovery. The overlying lithostratigraphic unit, the
newly described Neuville-sous-Huy Formation, is a lateral facies equivalent of the still poorly known
Dave Formation. The new unit is characterized by volcaniclastic rocks and red mudstone intervals and
dated as Telychian (Te1?, Te2 to Te4, Llandovery). The covering Naninne Formation is correlated by
graptolites and chitinozoans to the uppermost Telychian (Te5), Llandovery, and no longer as lowest
Sheinwoodian (Sh1), lower Wenlock as previously understood. The succeeding 10 J an mortier et al.
Jonquoi Formation is described in two long sections and dated by the same fossil groups to the upper
Sheinwoodian (Sh3) and the Homerian (Ho1-Ho3?), both Wenlock. Chitinozoans in the Thimensart
Formation confirm the previously established age of Gorstian (Go1-Go2), Ludlow. The Criptia Group
only occurs in the Puagne Inlier, a different tectonic unit in the Condroz Inlier, where it overlies the
Genicot Formation, itself dated as middle Aeronian by graptolites and chitinozoans. The latter fossil
group indicates a Telychian age (Te1- Te4), Llandovery for the Criptia Group. In the Moncheret and the
Longues Royes formations, the few chitinozoans did not allow a more precise dating than established
with spores in the literature.
Sixteen volcaniclastic beds have been identified and numbered in the Neuville-sous-Huy area. But
probably only 14 volcaniclastic beds are present, since beds Vβ and Vδ probably are part of the same
bed, and Vγ is possibly the same bed as the thick volcanic sandstone bed of the Parc de la Neuville.
Thirteen of them lie in the Neuville-sous-Huy Formation. Nearly all are located in the Telychian,
Llandovery from the upper Spirograptus turriculatus Biozone (Te2) to Cyrtograptus lapworthi Biozone
(Te4). The age of bed V9 is not precisely established because of the lack of fossils in the adjoining
strata; only a general Telychian to Wenlock range is proposed. A brief petrographical study of the
least weathered beds indicates that all beds are volcaniclastic rocks and rule out the presence of
lavas. For the origin of the volcanic sandstone beds a magma rich in plagioclase is indicated, at least
partly differentiated as shown by the presence of magmatic quartz, biotite and pumice. One layer
(V5) considered a volcanic ash tuff has some characters suggesting a basaltic composition.
The red mudstone horizons in the Neuville-sous-Huy area were described since 1932 and have now
been logged in detail and dated more accurately. At least four levels with many red mudstone layers
occur, with the three lower and important ones occurring in the Telychian, as already known, but now
their age is more precisely constrained: the two lower groups (red 1 & red 2) are lower to middle
Telychian (uppermost Te2 to lower Te3), and the next group (red 3) is middle to upper Telychian
(middle and upper Te3 to Te4). The few thin beds of the fourth group (red 4) are upper Telychian
(Te4), and the few thin beds of the highest group (red 5) are only situated in the broad range of
Telychian to Wenlock. Higher, in the Thimensart Formation, a sixth fine red mudstone level is presen
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
La transition Frasnien-Famennien (Dévonien Supérieur) en Europe :sédimentologie, stratigraphie séquentielle et susceptibilité magnétique
No full textDoctorat en Sciencesinfo:eu-repo/semantics/nonPublishe
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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