1,720,956 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
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
Perbandingan Kuantitas dan Kualitas DNA Bacillus sp. antara Heat Treatment dan Filter berbasis Kit: The Quantity and Quality Comparison of Bacillus sp. DNA between Heat Treatment and Filter Based Kit
Full text linkDiagnosis of bacterial infection can be done quickly with simplified DNA isolation methods, such as Heat Treatment, which is a simple and inexpensive DNA isolation method, but detection and quantification levels of Bacillus sp. still unknown. This study aims to compare the quantity and quality of DNA isolates from Bacillus sp. using Heat Treatment etraction method and Filter Based isolation method. This research used in vitro experiment method. Heat Treatment is compared to Filter Based Kit according to Limit of Detection (LoD) and Limit of Quantification (LoQ). Data analyzed with ANOVA and Honesty Significant Difference (HSD). DNA yield obtained by Heat Treatment at the highest concentration was 5 µg/ml, whereas Filter Based Kit was 3.67 µg/ml. LoD of the Heat treatment and Filter Based Kit were 1.61 and 5.72 µg/ml, while LoQ of the Heat treatment and Filter Based Kit were 4.87 and 17.34 µg/ml. The number of bacteria that exceeded the LoD and LoQ of Heat Treatment was 101 and 104 CFU/ml, whereas the LoD and LoQ of Filter Based Kit was >104 CFU/ml. The quantitiy of Bacillus sp. DNA with Heat Treatment method is better than Filter Based Kit. The quality of Bacillus sp. DNA both the Heat Treatment and Filter Based Kit methods are not good.
Keywords: DNA isolation, Bacillus sp., heat treatment, Filter Based Kit
ABSTRAK
Penegakkan diagnosis infeksi bakteri dapat dilakukan secara cepat dengan metode isolasi DNA yang telah disederhanakan, seperti Heat Treatment yang merupakan metode ekstraksi DNA sederhana dan ekonomis, namun tingkat deteksi dan kuantifikasi terhadap Bacillus sp. masih belum diketahui. Penelitian ini bertujuan membandingkan kuantitas dan kualitas DNA dari Bacillus sp. dengan menggunakan metode ekstraksi Heat Treatment dan metode isolasi Filter Based Kit. Penelitian ini menggunakan metode penelitian eksperimen secara in vitro. Heat Treatment dibandingkan dengan Filter Based Kit berdasarkan Limit of Detection (LoD) and Limit of Quantification (LoQ). Analisa data menggunakan uji ANOVA serta uji Honesty Significant Diference (HSD). Yield DNA yang didapatkan Heat Treatment pada konsentrasi terbesar adalah 5 µg/ml, sedangkan dengan Filter Based Kit adalah 3.67 µg/ml. Nilai LoD Heat treatment dan Filter Based Kit adalah 1.61 µg/ml dan 5.72 µg/ml, sedangkan nilai LoQ Heat treatment dan Filter Based Kit adalah 4.87 µg/ml dan 17.34 µg/ml. Jumlah bakteri yang melebihi nilai LoD dan LoQ Heat treatment adalah 101 CFU/ml dan 104 CFU/ml, sementara LoD dan LoQ Filter Based Kit adalah >104 CFU/ml. Kuantitas DNA Bacillus sp. dengan metode Heat Treatment lebih baik dibandingkan dengan Filter Based Kit. Kualitas DNA Bacillus sp. baik dengan metode Heat Treatment maupun Filter Based Kit tidak baik.
Kata kunci: isolasi DNA, Bacillus sp., heat treatment, Filter Based Ki
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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