1,720,956 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
Contribution of organic contaminations and nutrient level on dynamic equilibrium of dissolved oxygen in water bodies of costal belt of Ampara district
Get PDFThe dissolved oxygen (DO) of a water body (WB) is dynamically equilibrated between the two films such as gas and liquid
phases. Domestic and other related waste materials may alter this equilibrium as a result aquatic organism can suffocate.
Therefore, an investigation is necessary to analyse the Contribution of Organic Contaminations and Nutrient level on its
related WBs. The selected parameters such as chemical oxygen demand (COD), dissolved sulphide (DS), salinity, nutrient
level, and DO were used to analysis above contribution. Randomly selected three different WBs namely Ninthavur (S1),
Kalmunai (S2) and Sammanthurai (S3) were used for this study over a period of six month. The correlations studies were
carried out among parameters and measured data were also utilized in estimating the oxygen transfer efficiency (OTE), Eh, α
and β values. Contribution of domestic and other related waste materials on dynamic equilibrium of dissolved oxygen (DEDO)
were studied based on the OTE, α and β values. The DO has negatively correlated with COD, DS and nutrient level and these
implies a strong contribution of domestic and other related waste materials on the DEDO on these WBs. A poor negative
correlation (r2< 0.5) was observed for DO with salinity and it has demonstrated that impact of salinity on DEDO is very less
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
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
Synthesis of magnetized pectin hybrid particles from orange peel biomass for pesticide adsorption studies
Get PDFDisposal of pesticides into the water can cause a huge environmental issue for a few
decades. It can also affect human health with negative consequences. Therefore, in the
novel studies, scientists mainly focus on the most effective way to eliminate pesticides
from contaminated water. Magnetic separation is a novel method of separation and
purification. The reason for the popularity of magnetic separation is because they are
biocompatible, easily separatable, low cost, high performance, and renewability.
Magnetization of bio-waste material is an environmentally friendly and cost-effective
method in water remediation. Orange peel Biomass (OPB) contains a higher amount of
pectin than other natural sources. It is easily available as well as can be used to create
magnetic particles easily with Fe3O4 due to the presence of -OH and COO- groups.
Fe3O4@Pec-OPB can partially remove the sofit pretilachlor and profenophos
pesticides from the water around the paddy fields. The concentration gradient of both
pesticides after 24 h is 70 ± 2 ppm (35%). The adsorption isotherm model of the
pesticides fits with Langmuir isotherm. Monolayer adsorption capacity(qm) of sofit
pretilachlor and profenophos are 201.26 ± 68.06 mg g-1 and 170.93 ± 44.72 mg g-1
respectively. The adsorption kinetics of both pesticides on Fe3O4@Pec-OPB followed
the pseudo-second-order kinetic model and chemisorption mechanism. Based on the
results show that using synthesized bio adsorbent represents the adsorption process
that occurs via the chemisorption mechanism and it helps to partially remove sofit
pretilachlor and profenophos from agricultural wastewater
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
- …
