1,720,973 research outputs found
First results from topographic and geological mapping in the area of Uşakli Höyük (Turkey)
No full textThis paper describes the results of topographic and geological surveys carried out at the site of Uşaklı
Höyük (Turkey) in order to produce new detailed maps on a scale of 1:10,000 for supporting archaeological
investigations and providing good reference cartography during fieldwork.
The topographic map was created from the stereorestitution of a GeoEye-1 bundle satellite stereopair,
0.5m pan-sharpened imagery covering an area of about 100km2. This map was utilized for the
geological survey, for the archaeological interpretation of the palaeo-environmental evolution of the
site which bases on the present geomorphologic setting, and for the reconstruction of possible travelling
paths within a central region of the Hittite empire.
The aerial triangulation of satellite images, performed using ground control points measured specifically
by means of differential GPS surveys, allowed the stereoscopic visualization of the area and
the creation of the digital terrain model and orthophotos.
These results were a useful aid during the geological survey when all the outcrops were inspected
and documented through additional in-depth field checks. The geological map has been created and
refined using the digital terrain model and photointerpretation of stereo and orthoimageries, making
it possible to fully identify the geological boundaries between formations and recognize geomorphological
features
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
Topographic mapping and geological study of Melka Kunture palaeolithic site
No full textIn order to aid the archaeological researches at Melka Kunture prehistoric area (Ethiopia), a geological survey was carried out with the goal of producing the new geological map at the scale of 1:10,000. In addition, the topographic map at the same scale was created from the stereorestitution of two couples of Standard Stereo IKONOS II, 1 m pan-sharpened, satellite imageries. The scenes cover an area of about 100 km2 around the site and the produced topographic map was used as reference cartography. Rational Polynomial Coefficients allowed the images orientation, those accuracy was improved by the use of Ground Control Points measured through Differential GPS surveys. The images aerial triangulation allowed to create the Digital Elevation Model of the whole archaeological area and consequently to produce the orthophotomap. Additionally, following to the CORINE Land Cover
Nomenclature, this image was used to classify the area land use that was mapped into the topographic sheet. Concerning the geology, the area was object of detailed studies as testified by more than 170 geological stops that were executed in the most representative outcrops. Each of them was characterised by accurate description tables, panoramic and detailed pictures and by the measurement of 3D coordinates. During fieldwork activities also more than 80 rock samples were collected for petrographic and micropalaeontological analyses.
Geological mapping was supported by the study of the Digital Elevation Model and the photointerpretation of stereo- and ortho-images that allowed also to identify the most evident geomorphological and structural features. According to the reference system of the Ethiopian 1:50,000 topographic maps, the produced data was projected into the national UTM coordinate system (Spheroid Clarke 1880 - Datum Adindan - Zone 37 N)
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
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