1,720,954 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Get PDFWe 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
Analisis Ekspresi Gen MmCu/Zn-SOD dan Ketahanan Tanaman Kentang Kultivar IPB CP3 Transgenik Terhadap Cekaman Herbisida Parakuat
Get PDF AbstrakPenggunaan herbisida parakuat untuk mengendalikan pertumbuhan gulma telah menjadi metode yang paling umum. Namun, penggunaan herbisida juga dapat menyebabkan kematian sel tanaman kentang yang sedang dibudidayakan, karena herbisida parakuat dapat menginduksi pembentukan senyawa Reactive Oxygen Species (ROS) yang dapat merusak sel tanaman. Ekspresi berlebih dari gen MmCu/Zn-SOD diharapkan dapat memberikan ketahanan tanaman terhadap cekaman herbisida parakuat. Penelitian ini bertujuan untuk menganalisis ekspresi gen MmCu/Zn-SOD pada kentang transgenik IPB CP3 kultivar dan ketahanannya terhadap cekaman herbisida parakuat. Perlakuan herbisida parakuat dengan konsentrasi 75 µM pada tanaman transgenik (P3SOD6, P3SOD9, P3SOD17) dan non-transgenik (NT) secara in vitro menunjukkan bahwa semua tanaman transgenik lebih tahan terhadap cekaman parakuat dibandingkan tanaman non-transgenik. Klon P3SOD9 paling tahan terhadap herbisida parakuat, dengan perbandingan 10 tanaman hidup dari 12 tanaman yang diuji. Ekspresi gen MmCu/Zn-SOD pada galur transgenik lebih tinggi dibandingkan galur non-transgenik. Ekspresi relatif gen MmCu/Zn-SOD pada P3SOD9, P3SOD6, dan P3SOD17 secara berturut-turut lebih tinggi 233,22; 127,62; dan 3,18 kali dibandingkan ekspresi gen tersebut pada NT. Semakin tinggi ekspresi gen MmCu/ZnSOD, semakin tinggi ketahanan terhadap cekaman herbisida parakuat.AbstractThe use of paraquat herbicide to control weed growth has become the most common method. However, using the herbicide can also cause cell death in potato plants that are being cultivated because it can induce the formation of Reactive Oxygen Species (ROS) compounds that can damage plant cells. Overexpression of the MmCu/Zn-SOD gene is expected to provide resistance to paraquat herbicide stress. The study aimed to analyze the expression of the MmCu/Zn-SOD gene in transgenic potato cultivar IPB CP3 and its resistance to paraquat herbicide stress. In vitro treatment of transgenic (P3SOD6, P3SOD9, P3SOD17) and non-transgenic (NT) potato with 75 µM paraquat herbicide showed that all transgenic plants were more resistant to paraquat stress than that non-transgenic plants. The P3SOD9 clone was the most resistant to paraquat herbicide, with a ratio of 10 surviving plants of the 12 tested plants. The expression of MmCu/Zn-SOD in transgenic lines was higher than that in non-transgenic lines. The relative expressions of MmCu/Zn-SOD gene in P3SOD9, P3SOD6, and P3SOD17 were 233.22; 127.62; and 3.18 times higher than that of NT, respectively. The expression level of MmCu/ZnSOD correlates with the level of resistance to paraquat herbicide stress
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
Cek Plagiasi : PENGARUH KEGIATAN EKSTRAKURIKULER TERHADAP HASIL BELAJAR SISWA DENGAN FREKUENSI BELAJAR SEBAGAI VARIABEL MEDIASI
No full textAuthor-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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