1,720,955 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
TOKSISITAS CAMPURAN EKSTRAK DAUN SIRIH (Piper betle L.) DAN EKSTRAK BIJI SRIKAYA (Annona squamosa L.) TERHADAP MORTALITAS LARVA NYAMUK Aedes aegypti L.
No full textAedes aegypti L. merupakan nyamuk yang dapat berperan sebagai vektor
berbagai macam penyakit diantaranya Demam Berdarah Dengue (DBD). Siklus hidup
nyamuk Aedes aegypti L. mempunyai kebiasaan berkembang biak (bertelur) ditempattempat
yang tergenang air dan tidak langsung berhubungan dengan tanah.
Penanggulangan penyakit DBD dilakukan dengan jalan memutus rantai
perkembangbiakan nyamuk Aedes aegypti L., salah satunya dengan pengasapan
(fogging) yang menggunakan bahan aktif kimia. Bahan aktif tersebut sudah tidak
efektif lagi dalam mengendalikan vektor karena Aedes sudah menunjukkan resistensi
terhadap beberapa insektisida. Selain itu penggunaan insektisida ini (kimia sintetis)
bisa berdampak buruk bagi lingkungan. Untuk itu perlu dicari alternatif penggunaan
insektisida yang ramah lingkungan berupa insektisida alami
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
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
PERBEDAAN TOKSISITAS EKSTRAK DAUN SIRIH (Piper betle L.) DENGAN EKSTRAK BIJI SRIKAYA (Annona squamosa L.) TERHADAP LARVA NYAMUK Aedes aegypti L.
Full text linkDengue Fever is a public health problem that is more widespread endemic area for morbidity is high enough into something that must be addressed immediately.The way to solve this desease chemically can make this mosquito becomes resistant. To solve this problem, it needs to find an alternative way in which it can be a natural insecticide that is safe like compounds that comes from Piper betle leaves and Annona squamosa seed. The active compounds of Piper betle leaves that are mixed with the active compounds of Annona squamosa seeds can be used as bioinsecticide. Piper betle leaves contain the active compounds of saponin, alkaloid, flavonoid and tannin, while Annona squamosa seeds contain theactive compounds of annonacin, squamocin, asimisin and alkaloid. This research aimsed to investigate the toxicity of themixture of the Piper betle leaves extract and Annona squamosa seeds againet Aedes aegypti mosquito larvae and tocompare the toxicity of the extract mixture and single extract. The method of this research used complete random design bythree repetitions. The concentratios used were 300, 600, 900, 1200 and 1500 ppm for Piper betle leaves extract and 5, 10, 50, 70 and 100 ppm for Annona squamosa seeds extract with aquades asthe control. The data were analyzed by using probit analysis to determine the LC50. The LC50 score of the Piper betle leaves extract was 910,38 ppm and the LC50 of the Annona squamosa seeds extract was 20,62 ppm. This result showed that toxicity of Piper betle leaves extract with different Annona squamosa seeds which was toxicity is higher than the toxicity of Piper betle leaves extract
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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