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
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
EFEK HEPATOTOKSIK PEMBERIAN SUBAKUT TRITERPEN TOTAL DARI Centella asiatica Linn. PADA TIKUS PUTIH JANTAN DEWASA GALUR WISTAR
Full text linkSenyawa aktif utama dari Centella asiatica Linn. adalah triterpen total. Centella asiatica dilaporkan dapat menyebabkan nekrosis sel hati. Telah diteliti efek hepatotoksik pemberian subakut triterpen total dari Centella asiatica pada tikus putih jantan dewasa galur Wistar. Tujuan penelitian ini adalah untuk mengevaluasi pemberian dosis tunggal triterpen total dari Centella asiatica terhadap gambaran histopatologi dan fungsi hati tikus.Dari hasil penelitian menunjukkan adanya peningkatan aktivitas SGOT dan SGPT yang berbeda bermakna (ANOVA one way, p<0,05) pada setiap kelompok perlakuan. Peningkatan dosis pemberian triterpen total menunjukkan korelasi positif yang bermakna (Pearson Correlation, p <0,05) dengan peningkatan aktivitas SGOT dan SGPT. Peningkatan aktivitas SGOT dan SGPT tidak melebihi pada batas rentang normal. Dari gambaran histopatologi, pada kelompok kontrol dan perlakuan tidak ditemukan kerusakan histopatologi sel hati.Dari hasil penelitian disimpulkan bahwa pemberian subakut triterpen total pada dosis 21, 42, 84 mg/kgBB/hari selama 6 minggu dapat meningkatkan aktivitas SGOT dan SGPT dan belum ditemukan kelainan histopatologi sel hat
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
PENGARUH SUHU PENYIMPANAN TERHADAP STABILITAS KLINDAMISIN FOSFAT DALAM SEDIAAN EMULGEL DENGAN HYDROXYPROPYL METHYLCELLULOSE (HPMC) SEBAGAI GELLING AGENT
Full text linkThe present study was undertaken to investigate the effect of temperature on the degradation of clindamycin phosphate emulgel. This study aims to determine the rate of decomposition of clindamycin phosphate emulgel was storage at three different temperature of 30˚C, 50˚C, and 70˚C. Determination of percentage clindamycin phosphate was carried out every hour for 5 hours using Spectrophotometry UV-VIS. The results were statistically analyzed using the paired t-test. It was found a decrease in the levels of clindamycin phosphate emulgel at the storage temperature of 30˚C by 99.0874; 50˚C by 96.9314%, and a storage temperature of 70˚C by 96.0114%. Therefore, it can be said that clindamycin phosphate in emulgel preparations is chemically stable for 5 hours at a storage temperature of 30˚C, 50˚C, and 70˚C and the kinetics of the degradation rate of clindamycin phosphate in the emulgel preparation is in accordance with the second-order. Based on the statistically processed data result, it can be concluded that the storage temperature of 30˚C, 50˚C, and 70˚C shows that there is a significant difference (<0.005) in the data.Telah dilakukan penelitian tentang pengaruh suhu penyimpanan terhadap stabilitas klindamisin fosfat dalam sediaan emulgel. Penelitian ini bertujuan untuk mengetahui laju penguraian klindamisin fosfat dikarenakan variasi suhu penyimpanan dalam sediaan emulgel Emulgel klindamisin fosfat dilakukan penyimpanan pada suhu 30˚C, 50˚C, dan 70˚C. Pengukuran kadar dilakukan pada tiap interval waktu pada jam ke-0; 1; 2; 3; 4, dan jam ke-5. Penetapan kadar emulgel klindamisin fosfat menggunakan spektrofotometri UV-Vis kemudian hasil perolehan data dianalisa secara statistik menggunakan uji t berpasangan. Dari hasil penelitian didapatkan adanya penurunan kadar emulgel klindamisin fosfat pada sediaan dengan suhu penyimpanan 30˚C sebesar 99,0874%, suhu penyimpanan 50˚C sebesar 96,9314%, dan suhu penyimpanan 70˚C sebesar 96,0114% sehingga dapat dikatakan bahwa klindamisin fosfat dalam sediaan emulgel stabil secara kimia selama 5 jam pada suhu penyimpanan 30˚C, 50˚C, dan 70˚C dan kinetika laju penguraian klindamisin fosfat dalam sediaan emulgel mengikuti orde-2. Berdasarkan hasil pengolahan data secara statistik dapat dinyatakan bahwa suhu penyimpanan 30˚C, 50˚C, dan 70˚C menunjukkan data ada perbedaan signifikan (< 0.005
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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