1,720,975 research outputs found
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
WARFARE RELATED TRAUMA. THE EVIDENCE OF THE SKELETONS FROM THE BRONZE AGE NECROPOLIS OF OLMO DI NOGARA (ITALY)
No full textExploring the use of wild cereals at Takarkori (Central Sahara, southwestern Libya) through stable carbon and nitrogen isotope analysis of prehistoric desiccated seeds
No full textStable isotope analyses of archaeological plant material have increased in the last few decades
with questions arising about climate, environment, and subsistence strategies. While the
available studies are of great interest in the field, they are still a minority compared to other
types of organic material, especially from African contexts. Desiccated plant material in
particular has only sporadically been investigated, partly because archaeological contexts
suitable for its conservation are extremely rare and potentially diagenetically altered. Here
we provide stable carbon and nitrogen isotope data from prehistoric C4 wild desiccated
cereals from Takarkori (central Sahara, southwestern Libya). To our knowledge, this is the
first study on uncharred African archaeological seeds and one of the few examples of stable
isotope analysis applied to desiccated cereals. Results show that the stable nitrogen isotope
values are likely diagenetically altered. The stable carbon isotope values are uniform across
the different species analysed except for Panicum, likely linked to its photosynthetic subpathway. Although the response to environmental constraints is difficult to assess using
stable isotope analysis applied to C4 plants, the multidisciplinary studies available from
Takarkori suggest some kind of adaptation/resilience of the wild cereal species alongside
human exploitation over several millennia
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
Digital imaging techniques applied to a case of concha bullosa from an early medieval funerary area in central Italy
No full textObjective: Concha bullosa is a rather common condition of the nasal turbinates, rarely reported in archaeological skeletal collections. This paper examines a case of concha bullosa as seen in a female cranium from a burial in central Italy, dated to the Longobard domination in the Peninsula (mid-7th– early 8th century CE). Materials: The individual under investigation (T86/17) comes from the funerary area of Selvicciola, located near the town of Viterbo in northern Latium, Italy. Methods: The skeleton was macroscopically examined. We analyzed the CT-scans of the defect by applying innovative R-based virtual tools. Results: It was possible to calculate the inner volume of the concha bullosa and to provide a 3D visual assessment of its shape. Conclusions: Its size and shape suggest that the individual had this condition for a considerable period of time, during which its presence may have had affected her daily activities and health status. Significance: An under-represented paleopathological defect is examined for the first time through a virtual approach aimed at visualizing its shape and the assessment of its volume. New methods of 3D based virtual assessment can increase the informative value of defects. Suggestions for Further Research: Techniques used in this assessment should be considered as an evaluative tool for other conditions when macroscopic and radiographic imaging are limited
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