1,720,979 research outputs found
Native plants for the remediation of abandoned sulphide mines in Cyprus: A preliminary assessment
No full textMining in Cyprus resulted in a significant number of abandoned sulphide mines without any rehabilitation
measures. The present study aims to describe and compare the environmental parameters in three such mines
with respect to water chemistry, waste dumps geochemistry, slope-topography and plant growth. The mines
under study are that of Kokkinopezoula, North and South Mathiatis located at the northeast of the Troodos
massif. A synopsis of the previous studies conducted for the above-mentioned mines is presented, which includes
water and soil samples analyses. Although, in these areas environmental degradation is reported, there are some
plants which grow naturally. Therefore, a preliminary attempt to report these plants is conducted, while
remediation options presented in the literature including technosols, revegetation, phytoremediation and phy-
tostabilization are proposed. Potential use of native plants such as Phragmites australis, Tamarix smyrnensis,
Poaceae, Pinus brutia and Schoenus nigricans Poaceace could be applied for phytoremediation of the sulphide mines
in Cyprus. These plants seem to have great strength at low pH values and high metal content in contaminated
soils and water. The three mines under study are also compared with three other old mines located in the broader
area of Cyprus; that of Xeros, Limni and Skouriotissa, which operated under similar climatic conditions. By
improving abandoned mines environment with technosols, the action of native plants will be enhanced and thus
work towards a successful phytoremediation treatment, resulting in the minimization of future pollutants
generated by the solid waste dumps
Determination of volatile organic compounds evolved from human presence or from the decaying human body
No full text
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
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