1,720,973 research outputs found
Brecce serpentinitiche nel massiccio ultrabasico del Monte Avic (Falda Ofiolitica Piemontese): possibili evidenze di erosione sottomarina
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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
3D fold and fault reconstruction with an uncertainty model: An example from an Alpine tunnel case study
No full textIn order to improve the railway connection between Austria and Italy, a base tunnel, extending from Fortezza to
Innsbruck (57 km), is under study. The design corridor crosscuts a large and strongly tectonized section of the Eastern Alpine chain, characterized by complex metamorphic and igneous lithology and polyphase structures developed under ductile to brittle deformation conditions. In order to model the sub-surface geology of the area, surface and sub-surface geological data have been integrated in a spatial database. 3D geological models of the Italian part of the corridor have been constructed on the basis of this data using two approaches. The first is a more traditional approach, involving the reconstruction of several parallel and intersecting cross-sections. It has been implemented using ArcGISs software with custom-developed scripts that enable one to automatically project structural data, collected at the surface and along boreholes, onto cross-sections. The projection direction can be controlled and is based on structural trends obtained from a detailed statistical analysis of orientation data. Other ArcGISs scripts enable linking of the network of crosscutting profiles and help to secure their consistency. The second approach involves the compilation of a true 3D geological model in gOcads. As far as time efficiency and visualization are concerned, the second approach is more powerful. The basic structural geology assumptions, however, are similar to those applied in the first approach. In addition to the 3D model,
compilation scripts (ArcGISs and gOcads) have been developed, which allow estimation of the uncertainties in the depth extrapolation of structures observed at the surface or along boreholes. These scripts permit the assignment of each
projected structural element (i.e., geological boundaries, faults and shear zones) to a parameter estimating reliability. Basic
differences between ‘‘data-driven’’ interpolation and ‘‘knowledge-based’’ extrapolation of geological features at depth are also discussed and consequences for the uncertainty estimates of 3D geological models are evaluated
Carta Geologica e note illustrative del transetto val di Vizze-Fortezza (Alpi Orientali)
No full textNell'ambito delle indagini geologiche realizzate per la progettazione della galleria ferroviaria di base
del Brennero (Brenner Basistunnel), abbiamo eseguito nel 2000-01 il rilievo geologico-strutturale alla Scala 1:10.000
del corridoio compreso tra l'lsarco, la Val di Vizze (Vipiteno), la Val di Valles e Fortezza. II rilievo è stato generalizzato e ridotto alla Scala 1:25.000 nella carta allegata, che comprende la parte interna del prisma collisionale austroalpino-pennidico, il Lineamento Periadriatico e il basamento cristallino delle Alpi Meridionali. Le unità pennidiche appartengono all'involucro esterno e intermedio dell'antiforme meridionale (Gran Veneziano-Zillertal) esposta nel settore sud-occidentale della Finestra del Tauri. Esse sono costituite dalle sequenze oceaniche dei calcescisti con ofioliti della Falda del Glockner e dai metasedimenti clastici di margine continentale della sottostante Unità di Tulver-
Senges, di probabile età permo-eotriassica, affioranti nelle omonime piccole finestre tettoniche. L'Austroalpino affiorante a sud della finestra è costituito da un basamento polimetamorfico (Complesso Mules-Merano) e da limitate
coperture permo-triassiche. II contatto tettonico tra Austroalpino e Sudalpino è marcato dalle linee della Pusteria e di Sprechenstein-Val di Mules (Lineamento Periadriatico) e dall'intrusione della Lamella tonalitica di Mules, di età
oligocenica. Allo stesso ciclo magmatico sono riferibili alcuni filoni dacitico-andesitici intrusi nel basamento austroalpino e nei calcescisti mesozoici. II basamento sudalpino è costituito dal plutone granitico-granodioritico di Bressanone, di età tardo-paleozoica, e dalle filladi incassanti. Le unità pennidiche sono dominate da un metamorfismo
collisionale di età terziaria, al limite tra la facies anfibolitica e quella scisti verdi. II basamento austroalpino mostra una impronta metamorfica varisica in facies anfibolitica e una parziale sovraimpronta di età cretacica. Queste unità sono deformate da tre principali fasi di piegamento duttile di età alpina, seguite da deformazioni fragili-duttili e fragili, prevalentemente di tipo distensivo e trascorrente. II granito di Bressanone mostra solo deformazioni fragili.
L'antiforme delle unità austroalpine e pennidiche è dislocata da quattro principali sistemi di faglie: i) il sistema diretto NNE-SSW (orizzonte deformativo del Brennero), dominante a scala regionale e responsabile della scomparsa, nell'area della carta, di buona parte delle unità continentali esposte nell'antiforme Gran Veneziano-Zillertal; ii) il sistema ENE-WSW, presente nel prisma austroalpino-penninico e nel granito di Bressanone; iii) il sistema E-W, concentrato soprattutto nella fascia di deformazione associata alla Linea della Pusteria; iv) il sistema WNW-ESE, ben rappresentato dalla Linea Sprechenstein-Valle di Mules e presente anche nel granito di Bressanone. Molti di questi sistemi di faglie sono caratterizzati da spessi orizzonti di cataclasiti e gouge argillosi
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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