1,720,954 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
Potensi Antibakteri Serat Nano dari Ekstrak Tanaman Obat Indonesia: Tinjauan Fitokimia dan Teknologi Elektrospinning
Full text linkPengembangan serat nano berbasis tanaman obat melalui teknologi elektrospinning telah menarik minat besar dalam penelitian antibakteri karena karakteristik fisika unik dari serat nano, seperti luas permukaan yang tinggi dan porositas yang dapat disesuaikan. Artikel ini membahas potensi antibakteri serat nano yang dihasilkan dari ekstrak tanaman obat asli Indonesia, dengan fokus pada tinjauan skrining fitokimia dan teknik elektrospinning. Metabolit sekunder seperti flavonoid, alkaloid, tanin, dan saponin yang terkandung dalam tanaman obat Indonesia diketahui memiliki aktivitas antibakteri. Proses elektrospinning memungkinkan pembuatan serat nano dengan diameter submikron hingga nanometer, yang dapat meningkatkan efektivitas antibakteri melalui distribusi yang merata dari komponen bioaktif. Artikel ini juga mengulas prinsip fisika yang mendasari proses elektrospinning, termasuk pengaruh parameter tegangan, jarak nozzle-kolektor, dan viskositas larutan terhadap morfologi serat. Tantangan utama yang dihadapi dalam produksi serat nano berbasis tanaman obat meliputi homogenisasi ekstrak dalam matriks polimer dan optimisasi parameter fisik untuk menghasilkan serat yang stabil dan fungsional. Di samping itu, tinjauan ini juga membahas potensi aplikasi serat nano dalam bidang medis, seperti wound dressing dan pembalut antimikroba, serta implikasi fisika dari interaksi serat nano dengan permukaan bakteri. Kesimpulannya, meskipun penelitian ini menjanjikan, diperlukan pengembangan lebih lanjut untuk memaksimalkan efektivitas antibakteri serat nano melalui pendekatan interdisipliner yang mencakup aspek fitokimia dan fisika
BODY LOTION EKSTRAK SIRIH HIJAU (Piper betle L.) DENGAN KANDUNGAN FITOKIMIA BERPOTENSI ANTIMIKROBA
Full text linkPenelitian ini menganalisis bahan aktif antimikroba dalam ekstrak daun sirih hijau (Piper betle L.) untuk pengembangan body lotion. Ekstrak diperoleh melalui metode maserasi dan diuji secara fitokimia, menunjukkan kandungan flavonoid dan tanin yang berpotensi sebagai antimikroba. Body lotion diformulasikan dengan empat variasi konsentrasi ekstrak 0% (F0), 10% (F1), 15% (F2), dan 20% (F3). Hasil pengujian viskositas menunjukkan penurunan kekentalan seiring peningkatan konsentrasi ekstrak: F0 = 13.674 cP, F1 = 8.104 cP, F2 = 4.829 cP, dan F3 = 3.278 cP, namun semua formulasi tetap memenuhi standar SNI 16-4399 1996. Uji organoleptis menunjukkan perubahan warna menjadi hijau muda, aroma yang dapat diterima, serta tekstur halus. Nilai pH berkisar antara 5,6-6,1, aman untuk berbagai jenis kulit. Uji homogenitas menunjukkan distribusi komponen yang merata. Ekstrak daun sirih hijau memiliki potensi tinggi sebagai bahan aktif alami dalam body lotion antimikroba, dengan konsentrasi optimal antara 10% hingga 15% untuk keseimbangan kekentalan dan kenyamanan penggunaan
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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