1,720,957 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
Demoiselle Cranes on Agricultural Lands in the Ukraine
Full text linkIn Eurasia, the western range of the demoiselle crane (Anthropoides virgo) includes the southeast of Ukraine. Here the species nests, forms flying and pre-migrating concentrations, and participates in migration. The number of demoiselle cranes in April-June is about 600-700 individuals (200-250 nesting pairs), and toward the end of the year the population can reach 900-1000 individuals. Of cranes observed during 2000-2008 in the Crimea, 42.3% of pairs (n = 151) nested on agricultural fields: 21.5% on virgin land, 16.1% on cropland, and 3.4% on fallow lands. Principal characteristics of the demoiselle crane nesting locations were wavy relief, scarce herbage, low background herbage, and proximity and accessibility of water (usually 3-5 km distant or farther), absence of danger, or minimal likelihood of disturbance. The height of herbage around the observed nests averaged 1.35 cm (range 0-75 cm, n = 95), and the density of soil cover by herbage averaged 37.2% (range 0-90%, n = 97). The species of grassy vegetation was not important to the cranes for nest placement. In agricultural fields, as in the natural steppe biotopes, the determining factor for them is the presence of herbage, its height and its density; most frequently from complete lack of it to low and rarefied. The capture of insects by the demoiselle crane during the nesting period showed that the food base in the agricultural fields is no worse than on the steppe. The major threats are the expansion of agricultural areas that are not suitable for nesting (i.e., water saturated earth, perennial grasses, and crops in need of frequent cultivation); disturbance of birds by humans during mass hay harvesting, picnics, disorganized tourism (a disturbance to the daily rhythm of the birds, which disrupts social interaction between them and leads to the loss of abandoned eggs and nestlings); destruction of eggs and death of chicks from the onslaught of agricultural technology during cultivation of the fields; the collection of eggs and chicks for trade and for exchange between bird collectors; and an increase in the number of predators, especially domestic (stray dogs) and synanthropic Corvidae
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
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
About breeding of the Mandarin Duck (Aix galericulata) in the south of Ukraine
No full text<p><strong>About breeding of the Mandarin Duck (</strong><i><strong>Aix galericulata</strong></i><strong>) in the south of Ukraine. - O.M. Falko, Yu.O. Andryushchenko. - Berkut. 31 (1-2). 2022. </strong>- We observed males and females with breeding behaviour and later two broods (chicks at the age of 8-10 and 15 days) in the Vyrva tract on the Dnipro river within the city of Zaporizhzhia. Nesting of at least 2–3 pairs is supposed here. Mandarin Ducks can nest also in other suitable places on the Dnipro. [Ukrainian].</p><p>На підставі спостережень мандаринок обох статей із гніздовою поведінкою та виводків припускається гніздування щонайменше 2–3 пар в ур. Вирва в Запоріжжі. Можливе гніздування і в інших місцях на Дніпрі.</p>
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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