1,722,666 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
Fig. 1 in NEW DATA ON GEOMETRID MOTHS (LEPIDOPTERA: GEOMETRIDAE) FROM AMURSKAYA OBLAST
No full textFig. 1. Map of the studied localities in Amurskaya oblast. 1 – Blagoveshchensk, 50°18'N,Published as part of Kuzmin, A. A. & Beljaev, E. A., 2017, NEW DATA ON GEOMETRID MOTHS (LEPIDOPTERA: GEOMETRIDAE) FROM AMURSKAYA OBLAST, pp. 1-14 in Far Eastern Entomologist 348 on page 2, DOI: 10.25221/fee.348.1, http://zenodo.org/record/747518
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
Figs 2–7. Meteima gilva Djakonov, 1952. 2 in NEW DATA ON GEOMETRID MOTHS (LEPIDOPTERA: GEOMETRIDAE) FROM AMURSKAYA OBLAST
No full textFigs 2–7. Meteima gilva Djakonov, 1952. 2 – male, Primorskii krai; 3 – female, PrimorskiiPublished as part of Kuzmin, A. A. & Beljaev, E. A., 2017, NEW DATA ON GEOMETRID MOTHS (LEPIDOPTERA: GEOMETRIDAE) FROM AMURSKAYA OBLAST, pp. 1-14 in Far Eastern Entomologist 348 on page 5, DOI: 10.25221/fee.348.1, http://zenodo.org/record/747518
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
EXAFS STUDY OF ND3+-EXCHANGED BETA''-ALUMINA CRYSTAL
No full textThe local structure around the Nd3+ ions in 60%-exchanged sodium beta''-alumina was studied by X-ray absorption spectroscopy. The analysis of the Nd L3-edge experimental data shows that neodymium ions are mainly located near mid-oxygen (9d) sites. The local environment of Nd is slightly changed compared to crystallographic positions: the Nd-O(5) distance is shortened by 0.36 angstrom, while the Nd-Al (6c) is increased by 0.13 angstrom. The values of Debye-Waller factors of different coordination shells are discussed in terms of vibrational correlation
Low-temperature polymorphism in tungsten trioxide powders and its dependence on mechanical treatments
No full textThe polymorphism of WO3 powder samples, resulting from
mild mechanical treatments and from temperature changes between 30 K and room temperature, has been investigated by
using Raman spectroscopy and X-ray di¤raction. A transition
from the monoclinic (I) c-phase to the triclinic d-phase after
moderate mechanical treatments has been observed for untreated
powder, just what happens when the same samples are rapidly
cooled to low-temperature. Evidences of the low temperature
monoclinic (II) polar e-phase have been found at room temperature in samples after a stronger milling treatment. The sequence of the low-temperature phase transitions appears to be strongly dependent on the mechanical history of the powders. A new lowtemperature N-phase has been observed below about 200 K in di¤erent samples: it is the main phase in commercial untreated powders, having the monoclinic (I) c-phase at room temperature, but constitutes only a small fraction in moderately treated powders, having the triclinic d-phase at room temperature
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