1,720,958 research outputs found
CHARACTERISTIC OF CONTRACTION AND DISCHARGE COEFFICIENT FOR FLOW UNDER SLUICE GATE
Get PDFThe contraction coefficient (Cc) and discharge coefficient (Cd) always rise in flow while sluice gate operated with variation of open gate and discharge (Q). This experimental research used prototype model made from fiberglass (horizontal channel), sluice gate installed on it. Two models of trapezoid baffle block installed as three rows, specified location 25 cm after sluice gate pair using sill with different dimension. Water depth (y) and velocity (v) were measured during each running test then Froude number, contraction coefficient (Cc) and discharge coefficient (Cd) were calculated. The result showed that trapezoid baffle block model T2 (used no sill, sill 2 cm and sill 2.7 cm, Fr = 0.11 - 0.75) gives the better performance modelling of Cc and Cd in term of the initial Froude number with R2 = 0.8086 (Cc) and R2 = 0.8273 (Cd)
Water Quality Analysis of Village and Monitoring Well around Rembang Steam Power Plant (EIA in Central Java, Indonesia)
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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
Pengaruh Alkalinisasi Serat Terhadap Kekuatan Mekanik Plafon Komposit Serat Rumput Payung (Cyperus Alternifolius) Dengan Matriks Epoxy
Get PDFPerbaikan karakteristik serat alam sebagai bahan komposit dapat dilakukan salah satunya dengan metode alkalinisasi. Alkalinisasi serat akan mereduksi penyerapan kelembapan serat alam, sehingga akan memperbaiki daya ikat serat dan polymer. Perlakuan kimia terhadap serat alam yang sering dilakukan adalah dengan menggunakan perlakuan alkali seperti NaOH, karena lebih ekonomis. Penelitian ini dilakukan untuk mengoptimalkan kekuatan mekanik plafon komposit serat rumput payung (cyperus alternifolius) dengan matriks epoxy. Proses alkalinisasi serat, dilakukan untuk memperbaiki daya ikat baik antara serat dan epoxy. Serat akan dialkalinisasi menggunakan larutan NaOH sebesar 5% dengan variasi lama perendaman 0,1,2,dan 3 jam. Serat yang telah teralkalinisasi dikombinasikan bersama epoxy untuk membentuk susunan lamina menjadi plafon yang memiliki ketebalan 5 mm. Kekuatan mekanik yang dianalisis adalah kekuatan tarik dan lentur plafon komposit. Hasil pengujian dibandingkan dan dianalisis dengan hasil penelitian sebelumnya yang telah dilakukan tanpa perlakuan alkalinisasi serat. Berdasarkan hasil penelitian diperoleh peningkatan kekuatan mekanik komposit sebesar 85,7% dari penelitian sebelumnya, sehingga dapat disimpulkan bahwa terdapat pengaruh alkalinisasi serat terhadap peningkatan kekuatan mekanik plafon komposit serat rumput payung (cyperus alternifolius) dengan matriks epoxyÂ
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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