1,720,984 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
Biofertilizer Application Influence in Dinamics of Microorganisms Abundance on Tin Mined Area planted Pepper Plant (Piper nigrum L.): Aplikasi Pupuk Hayati Terhadap Dinamika Kelimpahan Mikrob pada Lahan Bekas Tambang Timah yang Ditanami Tanaman Lada (Piper nigrum L.)
Full text linkPupuk hayati (biofertilizer) merupakan pupuk yang mengandung 9 konsorsium mikrob dan bermanfaat untuk pertumbuhan tanaman. Keuntungan penggunaan pupuk hayati adalah untuk meningkatkan efisiensi pemupukan, menjaga kesuburan serta kesehatan tanah dan tanaman, sehingga meningkatkan hasil dan berkelanjutan. Penelitian ini bertujuan untuk mengetahui pengaruh dosis pupuk hayati terhadap dinamika kelimpahan mikrob tanah di lahan bekas tambang timah yang ditanami tanaman lada (Piper nigrum L.) Metode yang digunakan adalah observasi langsung di lapangan melalui pengambilan sampel tanah dengan teknik purposive sampling. Sampel tanah diambil dari setiap taraf perlakuan pada lahan bekas tambang timah yang ditanami tanaman lada sebanyak 6 sampel. Seluruh sampel tanah kemudian diisolasi, media PDA untuk cendawan, media NA untuk bakteri dan media pikovskaya untuk pengujian mikrob pelarut fosfat baik untuk bakteri maupun cendawan, sehingga diperoleh sebanyak 54 cawan. Hasil menunjukkan bahPemberian dosis pupuk hayati yang berbeda-beda tidak berpengaruh terhadap dinamika kelimpahan mikrob. Perlakuan B4 (10 g L-1 tanaman-1) memberikan pengaruh yang relatif baik terhadap kelimpahan cendawan. Sedangkan perlakuan B3 (5 g L-1 tanaman-1) memberikan pengaruh yang relatif baik terhadap kelimpahan bakteri. Hasil dari uji fiksasi nitrogen diperoleh bakteri penambat N pada media NFB dengan adanya pellicle pada bagian bawah tabung reaksi. Hasil uji pelarut fosfat diperoleh dengan zona bening yang mengelilingi bakteri dan cendawan. Dari 6 sampel tanah yang dianalisis mengandung bakteri fiksasi nitrogen dan Bacillus cereus dengan bakteri sebagai pelarut fosfat.Biofertilizer is a fertilizer containing nine microbial consortia that useful for plant growth. The benefits of using biofertilizers are to improve fertilizer efficiency, maintain fertility soil and plant health, improving yield and sustainability. The aim of this research was to know the effect of the biofertilizer dosage to the population dynamics of microbial abundance of tin mined area planted with pepper plant (Piper nigrum L.). The method used is a direct observation method in the field through soil sampling with a purposive sampling technique. Six Soil samples were taken from every level of treatment. Soil samples were isolated, PDA media for fungi, NA media for bacteria and pikovskaya media for microbes solubilazition phosphate testing for both bacteria and fungi consisting of 54 plates. Result of the research indicate that different dosage of biofertilizers did not affect the dynamics of micro-organisms abundance. Treatment of B4 (10 g L-1 plant-1) gave a good effect on the abundance of fungi. While the treatment of B3 (5 g L-1 plant-1) gave a good effect on bacterial abundance. The result of nitrogen-fixing test was obtained by N inhibiting bacteria on NFB media in the presence of a pellicle at the bottom of the test tube. The result of the phosphate solubilization test was obtained with clear zones surrounded bacteria and fungi. Analyzed six soil samples contained nitrogen-fixing bacteria and Bacillus cereus with bacteria as phosphate solubilization bacteria
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
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