1,721,052 research outputs found
Structure and Metamorphism of Amorgos: A field excursion
No full textThis field excursion focuses on structural and metamorphic aspects in the island of Amorgos, which is normally considered to represent the stratigraphy of external units in the Hellenides. The excursion includes two itineraries. The first one is in the area northwest of Katapola, where two distinct high-pressure units are exposed. High-pressure mineral assemblages include (1) blue amphibole, garnet and clinopyroxene; and (2) Fe-Mg-carpholite, quartz, phengite and paragonite. The contact between the two units is a low angle detachment fault. The second itinerary starts in the famous monastery of Hozoviotíssas and ends in the northern port of Egiali. The excursion passes through some good examples of folding and provides constraints on the multiple-phase deformation history of the island
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
Structural contacts in subduction complexes and their tectonic significance: the Late Palaeozoic coastal accretionary wedge of central Chile
Get PDFUnderstanding the contact between the very low-grade metagreywacke of the Eastern Series and
high-pressure metamorphosed schist of the Western Series in the Late Palaeozoic accretionary wedge of
central Chile is fundamental for the understanding of the evolution of ancient accretionary wedges. We show
the progressive development of structures and finite strain from the least deformed rocks in the eastern part of
the Eastern Series of the accretionary wedge to high-pressure schist of the Western Series at the Pacific coast.
Upright chevron folds of sedimentary layering are associated with an axial-plane foliation, S1. As the F1 folds
became slightly overturned to the west, S1 was folded about west-vergent open F2 folds and an S2 axial-plane
foliation developed. Near the contact between the Western and Eastern Series S2 represents a penetrative
subhorizontal transposition foliation. Towards the structurally deepest units in the west the transposition
foliation becomes progressively flattened. Finite-strain data as obtained by Rf /ϕ analysis in metagreywacke
and X-ray texture goniometry in phyllosilicate-rich rocks show a smooth and gradual increase in strain
magnitude from east to west. Overturned folds and other shear-sense indicators show a uniform top-to-the-west
shear sense in moderately deformed rocks, whereas the shear sense is alternating top-to-the-west and top-tothe-
east in the strongly flattened high-pressure rocks of the Western Series near the Pacific coast. We interpret
the progressive structural and strain evolution across the contact between the two series to reflect a continuous
change in the mode of accretion in the subduction wedge. Initially, the rocks of the Eastern Series were
frontally accreted to the pre-Andean margin before c. 300 Ma. Frontal accretion caused horizontal shortening,
and upright folds and subvertical axial-plane foliations developed. At c. 300 Ma the mode of accretion
changed and the rocks of the Western Series were underplated below the Andean margin. This basal accretion
caused a major change in the flow field within the wedge and gave rise to vertical shortening and the
development of the penetrative subhorizontal transposition foliation. Subsequent differential exhumation was
resolved gradually over a wide region, implying that exhumation was not tectonically controlled.researc
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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