1,720,997 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
Effects of Winter Pruning on Physical and Mechanical Properties of Grapes
No full textThe trials evaluated possible changes in the physical and mechanical properties of ‘Chardonnay’ grapes trained to GDC, depending on the winter pruning system. The following pruning techniques were carried out: manual pruning (m); mechanical pruning (M); mechanical pre-pruning and hand finishing (M+m), this method had a wagon facility with two operators equipped with pneumatic scissors. During the trials were measured: working time, quality of pruning and vegetative-productive response of vines. For the 2010 harvesting, a consolidated analytical method of texture analysis was applied to evaluate the physical parameters of the grapes: pedicel detachment, skin perforation, skin thickness, and other features such as hardness, cohesiveness, springiness. Analysis of working times showed that manual pruning (m) required a greater commitment of time, while mechanical pruning (M) presented a time reduction of 93%. Mechanical pruning associated with manual finishing (M+m) lowered the time by 65%. The cost reduction is less evident but still significant. Mechanical pruning, compared with the manual pruning, gave an increase of spurs and buds density. A higher percentage of damaged spurs and in the wrong position was also detected. Generally, the increasing of mechanization levels of pruning gave origin to more bunches, sparser with smaller berries. The study of mechanical properties of berries showed significant differences in the mechanical behaviors of the pruning tests. The mechanical pruning (M) presented higher values for pedicel detachment, skin perforation, cohesiveness and springiness. The results showed that mechanical pruning can modify berry properties which can influence other mechanical interventions in the vineyard
Doppia cortina: pettinatura meccanica traguardo possibile
No full textIl confronto tra l’operazione manuale
e quella meccanica con una macchina a coltelli
rotanti evidenzia che, a seconda della manodopera
necessaria, la meccanizzazione conviene anche
con superfi ci che vanno da 1,4 a 2,5 ettari.
La convenienza si amplifi ca se si considera che il telaio
porta utensili serve per altre operazioni coltural
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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