1,721,304 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
Adaptive Multi-reservoir-based Flood Control and Management for the Yellow River: Towards a Next Generation Software System
No full textThe Yellow River is known as the ‘mother river’ of the Chinese people, but is also said to be ‘China's Sorrow’ or the ‘Scourge of the Sons of Han’, because in history multiple major floods have had catastrophic effects on people and land along the 5000 km long river reaching from the Himalaya’s to the Bohai Sea. Three sections can be distinguished: the upper, middle and lower part of the Yellow River. The upper part is not considered in this thesis. In the middle Yellow River, the Yellow River Conservancy Commission built a number of reservoirs from the 1950’s onward, mainly for flood protection. The lower part of the river consists of an 800 km long so-called ‘hanging river’ where, due to sedimentation, the riverbed exceeds the floodplain level, which makes the floodplain area extremely vulnerable to flooding, in particular in case of high river discharges. In that sense, the lower part of the Yellow River is very similar to some of the polder systems in the Netherlands.Hydraulic EngineeringCivil Engineering and Geoscience
Aspects of the behaviour of parts-of-speech in Italian texts
No full textThe present article is a continuation of the analysis performed in Tuzzi, Popescu, Altmann (2010). Here the parts-of-speech have been scrutinized. Their rank-frequency distributions have been characterized using the Repeat rate, the Entropy and Ord’s criterion. The ranking of POS with individual Italian presidents has been used to characterize the homogeneity individually and as a whole of 63 texts using Kendall’s concordance coefficient. There is high concordance. The last aspect is the computation of distances between identical parts-of-speech which yield a very unique picture represented by the Zipf-Alekseev function
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
Methods and PC-Based Package for Multicriterial Hydrodynamic Performance Estimation of Optimal Fast Monohulls
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