1,720,955 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Get PDFWe 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 groundwater quality around a petroleum tank farm, in Ifie Community and environs, Warri, Southern Nigeria
Get PDFInvestigation of the physical and chemical properties of groundwater around a Petroleum Tank Farm was carried out between January and August, 2015 to assess the suitability of the borehole water for drinking and other domestic uses. The results show that pH of water was acidic with values ranging from 4.62 to 6.87, EC (33.00–206.00 µs/cm), TDS (15.00–115.00mg/L), DO (2.13 7.10mg/L), and BOD (0.71–2.28mg/L). Anionic concentrations varied thus: HCO3 (2.42-15.11mg/L), SO42- (0.67-10.54 mg/L), NO3- (0.15-4.71 mg/L), PO4- (0.04-0.81 mg/L) and Cl- (8.03-35.82 mg/L). The cations had very low values: Ca2+ (1.29-10.17 mg/L), Mg2+ (0.19-4.82 mg/L), Na+ (0.16-2.81mg/L), Cu2+ (0.02-0.20mg/L), Zn2+ (0.02-0.61mg/L) and Fe (0.02-0.31mg/L). Water Quality Index (WQI) revealed very poor water, suggesting that the heavy vehicular movements and gas flaring at the Petroleum Tank Farm impacted negatively on its surrounding groundwater with increased levels of pH, DO and BOD. Based on the findings in this study, the quality of the borehole water is unsuitable for drinking without adequate treatment. Improved energy efficiency performance of all utilities such as in means of transport and behavioural changes to reduce green house gases through the adoption of renewable energy should be encouraged and advocated. Keywords: Borehole, Groundwater, Water quality, pH, BOD, Warr
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
Utilization of water quality index (WQI) in water quality assessment of groundwater in Agbor metropolis, Delta State Nigeria
No full textA water quality index provides a single number that expresses the overall quality at a certain location and time based on several water parameters. The objective of the study was to calculate the Water Quality Index (WQI) of groundwater in Agbor metropolis, Delta State Nigeria in order to assess its suitability for drinking and domestic purposes. WQI was determined on the basis of various physico-chemical parameters namely pH, Electrical conductivity (EC), Turbidity, Total suspended Solids (TSS), Total Dissolved Solids (TDS), Dissolved Oxygen (DO), Biochemical Oxygen Demand (BOD), Sulphate, Nitrate, Phosphate, Chloride, Copper, Lead, Iron, Zinc and Cadmium. The calculation of the WQI was done using weighted arithmetic index method. The WQI was found to be 45.46 indicating that the groundwater in the study area is of good quality in its un- treated state quality and therefore safe for human consumption and domestic purposes
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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