1,721,015 research outputs found
High-temperature fracturing and ductile deformation during cooling of a pluton: The Lake Edison granodiorite (Sierra Nevada batholith, California)
No full textIn the Bear Creek area of the Sierra Nevada batholith, California, the high temperature post-magmatic deformation structures of the Lake Edison granodiorite include steeply dipping orthogneiss foliations, joints, and ductile shear zones that nucleated on joints and leucocratic dykes. Exploitation of segmented joints resulted in sharply bounded, thin shear zones and in large slip gradients near the shear zone tips causing the deformation of the host rock at contractional domains. The orthogneiss foliation intensifies towards the contact with the younger Mono Creek granite and locally defines the dextral Rosy Finch Shear Zone (RFSZ), a major kilometre-wide zone crosscutting the pluton contacts. Joints predominantly strike at N70-90°E over most of the Lake Edison pluton and are exploited as sinistral shear zones, both within and outside the RFSZ. In a narrow (∼ 250 m thick) zone at the contact with the younger Mono Creek granite, within the RFSZ, the Lake Edison granodiorite includes different sets of dextral and sinistral shear zones/joints (the latter corresponding to the set that dominates over the rest of the Lake Edison pluton). These shear zones/joints potentially fit with a composite Y-R-R′ shear fracture pattern associated with the RFSZ, or with a pattern consisting of Y-R-shear fractures and rotated T′ mode I extensional fractures. The mineral assemblage of shear zones, and the microstructure and texture of quartz mylonites indicate that ductile deformation occurred above 500 °C. Joints and ductile shearing alternated and developed coevally. The existing kinematic models do not fully capture the structural complexity of the area or the spatial distribution of the deformation and magmatic structures. Future models should account more completely for the character of ductile and brittle deformation as these plutons were emplaced and cooled
Le ‘relazioni’ e la storia : Il racconto delle Fiandre di Giovanni Botero, Emanuele Tesauro e Galeazzo Gualdo Priorato
Full text linkGaleazzo Gualdo Priorato, in gioventù soldato al servizio della Francia e degli Asburgo, dal 1640 pubblicò opere di carattere storico su vicende e personaggi a lui contemporanei, guadagnandosi il titolo di storiografo cesareo. I saggi qui raccolti permettono di mettere nuovamente a fuoco una figura a lungo trascurata negli studi sul Seicento italiano, confutando il pregiudizio secondo cui l’opera di Priorato andava derubricata nel campo della pubblicistica. Al contrario, il profilo che emerge è quello di un autore prolifico ma dotto, con ambizioni politiche e velleità letterarie, storiografo cortigiano inserito nell’Europa delle grandi monarchie, ma culturalmente affine agli indirizzi libertini della letteratura veneziana degli Incogniti.A tangle of themes cluttered the pen of the 16th-17th-century polygraphers,
but some more than others impressed them by their political urgency. This was the case
with the dramatic Flanders Wars and the geo-political lacerations that religious conflicts
entailed in Europe in the late 16th century and the first four decades of the following until
the conclusion of the Thirty Years’ War. Giovanni Botero, author of The Reason of State but
also of the Universal Relations, was among the first – in the wake of Antonio Possevino, Ce-
sare Campana and Guido Bentivoglio – to narrate the events from a decidedly pro-Spanish
perspective, yet attentive to the motivations and successes of the Dutch rebels, perceiving
the harsh consequences triggered by confessional quarrels. How much could the Vicenza-
born Gualdo, military man, witness and historiographer, make of this in his Historie delle
guerre di Ferdinando II e Ferdinando III and in Guerriero prudente (1640)? What are the points
of contact, then, with Campeggiamenti nelle Fiandre (1638) by the Jesuit Emanuele Tesauro,
also a witness and historiographer in that case? Apart from palmistry comparisons, the
contribution aims to grasp the close relationship between those baroque authors and their
contemporary history, declined in the form of a living, fitting, reportage in fieri
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
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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