1,721,509 research outputs found

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The 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

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    “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

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    We 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

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    We 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

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    Analysis of Crude Protein Contents in Grass Stenotaphrum secundatum at The Standard Testing Location of Small Ruminant Instruments Using The Kjeldahl Method

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    Analysis of Crude Protein in Stenotaphrum secundatum Grass at the Small Ruminant Instrument Standard Testing Site has been carried out. Protein is one of the ingredients needed to help the growth process in livestock. It is important to know the content of a feed ingredient before giving it to livestock. This research aims to determine the crude protein content found in Stenotaphrum secundatum grass. The method used in this research is the Kjeldahl method. The working principle of the Kjeldahl method uses a special method to measure the quantity of protein by measuring the nitrogen content in food or other ingredients. The Kjeldahl method consists of three stages, namely destruction, distillation and titration. In the digestion stage, the organic nitrogen content in the sample is converted into ammonia using sulfuric acid and a catalyst through a heating process. Then in the distillation stage, the resulting ammonia will be evaporated by heating and captured in a standard acid solution. Next, in the titration stage, the captured ammonia is measured by titration using a standard acid solution. The results of this titration provide nitrogen levels in the sample, which can then be used to calculate protein or nitrogen levels in the sample. The crude protein content obtained from Stenotaphrum secundatum grass was 9.80%.40 PagesKertas Karya Diplom

    Analisis Kadar Zat Organik pada Sampel Air Bersih dengan Metode Titrimetri di Balai Teknik Kesehatan Lingkungan dan Pengendalian Penyakit (BTKLPP)

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    Water is a very basic need for human life. All activities require water, especially clean water for drinking, cooking and washing. The availability of clean water is limited due to poor human treatment in maintaining the sustainability of water sources so that water quality decreases. Pollution due to domestic waste such as rubbish, where decomposed waste produces leachate which contains organic substances. Meanwhile, the need for clean water continues to increase as the population increases every year. This study aims to analyse the levels of organic substances in clean water samples at the Environmental Health and Disease Control Engineering Center (BTKLPP). The titrimetric method developed is using general quantitative chemical analysis in determining the concentration of an analyte. The analysis results showed 6.0 mg/L in test sample number 242; 5.9 mg/L in test sample number 265; 6.0 mg/L in test sample number 266; 6.0 mg/L in test sample number 275, and 6.1 mg/L in test sample number 276. The levels of organic substances are declared to still meet the quality standards in accordance with the requirements according to PERMENKES No.32 of 2017 with the maximum limit of organic substance levels set at 10 mg/L.46 HalamanKertas Karya Diplom

    Analysis Physicochemical Properties of Lard Fried Noodles and Analysis of Pork DNA Using Polymerase Chain Reaction (PCR)

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    Lard is used as a component in food or as a food supplement. Simple analytical methods are required in determining lard in adulterated foods. The purpose of this study was to prepare and extract lard from fried noodles and to analyze the extracted lard using physicochemical properties test and to analyze using Polymerase Chain Reaction. The results obtained from the analysis of physicochemical properties where the refractive index of lard with the best result is 1,4656, the melting point of lard with the best result is 41°C and the saponification number is 231,56 %. Qualitative analysis with lard emulsion test where a mixture of lard and aquadest forms a dispersion system called an emulsion. Quantitative analysis with Polymerase Chain Reaction (PCR) in which a positive sample contains pork DNA indicated by sample DNA bands that are parallel to the positive control DNA band (pork) and the purity value of sample pork DNA is 0,9931 μg/mL.89 PagesSkripsi Sarjan
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