1,720,978 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
Assessment of the spatial distribution of air pollution and its relation with land uses: the case of the Thriassion Plain
No full textThe aim of the present Thesis is to investigate the evolution and the spatial distribution of air pollution in Thriassion Plain during the years 1986-2007, in conjunction to certain climate indices as well as changes in population and activities established in the area, causing land use changes over time. The results can summarize as follow: Established activities in coastal area tend to intensify heat island effect in Thriassion Plain; meteorological indeces identify drying tendencies for Thriassion Plain and there is some improvement in air quality. The statistical analysis indicates correlation between population and established activities, as well as between climate indices and air quality indices. Air quality indices increase (e.g. ambient air quality is stressed) when climate indices suggest dryer climate
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
Environmental Education: Issue Water: Different Approaches in Secondary General and Technical Lyceum in a Social and Environmental Stressed Area in Greece
No full textAbstractGreek Ministry of Education, through West Attica Local Administration's of Secondary School Education, during 2010 – 2013 school years has implemented various projects about water and related benefits. General Lyceum of Mandra (GLM) and 1st Technical Lyceum of Aspropyrgos (TLA) have participated to those projects. Both schools located in an environmental stressed area, the industrial area of Thriasio Plain. The purpose of this paper is to present the methods used in order to approach the issue, the reactions of the students, some of their work and the experience the involved teachers earned
NDVI and E. de Martonne Indices in an Environmentally Stressed Area (Thriasio Plain – Greece)
No full textAbstractIn this paper we examine the possible differentiations of the E. de Martonne climatic aridity index in conjunction to Normalized Difference Vegetation Index – NDVI index. For this purpose meteorological data cover the period from 1958 to 2011 was used. Also for three Landsat satellite images NDVI index was performed. The results for the climatic index show a trend towards characterizing the climate as warmer and drier. The latter conclusion is consistent with intense land use change in the area of interest, and is due to a shift in the management of surface waters used for crops irrigation in the region
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