1,720,958 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
"Study on the Isolation of Fungi from the Soil Samples and Their Antimicrobial Activities"
Full text linkin the study, fifteen different fungi were isolated from different soil samples. It
was collected from five different places in BYE DA YAW village in Sagaing Township, in
June, 2020. The macroscopic and microscopic characters of soil fungi have been
undertaken. Isolated soil fungi were tested by using six test organisms. Fifteen fungal
strains showed antimicrobial activities against the six test organisms during the
preliminary screening. Among them soil fungi SF-1, SF-3, SF-5 and SF-15 were shown
distinct activities against six test organisms during the confirmatory screening. The
selected soil fungus SF-15 was tested by using paper disc diffusion method (NITE, 2004).
In the screening program, soil fungus SF-15 exhibited the highest antibacterial activities on
Escherichia coli. Therefore, this fungus SF-15 was selected for further investigation and will
produce primary and secondary metabolities. In order to discover novel antibiotics
produced by soil microbe
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
"Isolation of Endophytic Fungi from Vigna Mungo (L.) Hepper and Their Antimicrobial Activities"
Full text linkThe Vigna mungo (L.) Hepper (Mat Pe) plant sample was collected at Thae Phyu Village
Hinthada Township, Ayeyawady Region for the isolation of endophytic fungi during June
in 2020. The Mat Pe plant was identified by using reference keys (Darwin, R., D. Hooker
and D. Jackson.1895). Twelve fungi were isolated from leaf, stem, main root and nodule of
Mat Pe plant by using surface sterilization method (NITE, 2004). These fungi were
transferred into the Czapek–Doz Agar (CZA) medium and incubated at 27ºC for four to
seven days. The pure fungi were tested by using seven test organisms for the study of
antimicrobial activities. Among them, endophytic fungus TFO-07 showed highest activity
againstAgrobacterium tumefaciens during the confirmatory screening . TFO-07 can kill
crown gall disease caused byAgrobacterium tumefaciens in plants. Therefore, TFO-07 was
selected for the further investigation such as the effect of age and size of inoculum, effect
of carbon and nitrogen sources and effect of pH
Screening of Endophytic Fungi from Hypselandra variabilis ( Coll & Hems ) Pax & Hoffm and their Starch Hydrolysis Activities
Full text linkThe endophytic fungi were isolated from various parts of Hypselandra variabilis (Coll & Hems) Pax & Hoffm (Thamon) plant grown at Tha-Yet- Kan village, Madayar Township, Mandalay Region, during July to September 2021. The endophytic fungi were isolated by surface sterilization method (NITE, 2004). A total fifteen fungi were isolated according to their morphological characters. The amylase enzyme activities of fungal isolates were detected by method of NITE, 2004. The pure endophytic fungi were tested by iodine for the study of starch hydrolyzing activities. Among them, eleven endophytic fungi showed the starch hydrolyzing activities. And then, pure isolated fungi were inoculated into test tubes containing isolation medium for the further research such as antimicrobial activities
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