1,720,974 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

    Pengaruh Perbedaan Bahan Perekat dan Sumber Filtrat terhadap Fraksi Serat dan Kualitas Fisik Wafer Ransum Komplit

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    ABSTRACT. Pelepah sawit dapat diolah dengan penambahan filtrat abu sekam padi (FASP) dan filtrat abu tandan kosong (FATK) selanjutnya digunakan sebagai bahan pembuatan wafer. Perbedaan sumber filtrat dan bahan perekat dalam pembuatan wafer memengaruhi fraksi serat dan kualitas fisik. Penelitian bertujuan mengetahui pengaruh sumber filtrat dalam pengolahan pelepah sawit dan bahan perekat berbeda dalam pembuatan wafer terhadap fraksi serat dan kualitas fisik. Rancangan acak lengkap berfaktor 2 x 3 dengan 3 ulangan digunakan dalam penelitian. Faktor F : sumber filtrat : F1= FATK dan F2 = FASP. Faktor L: bahan perekat, L1 = molases; L2. onggok; L3. tepung tapioka. Parameter yang diukur adalah kualitas fisik (kerapatan partikel dan daya serap air) serta fraksi serat (serat detergen asam/acid detergent fiber (ADF), hemiselulosa, selulosa, lignin dan serat detergen netral/neutral detergent fiber (NDF). Data dianalisis dengan analisis variansi selanjutnya analisis ragam dengan uji jarak berganda Duncan/Duncan Multiple Range Test (DMRT). Pelepah sawit yang diolah dengan sumber filtrat berbeda tidak memengaruhi kualitas fisik (daya serap air dan kerapatan partikel) serta kandungan selulosa dan hemiselulosa, tapi memengaruhi (P0,05) kandungan ADF, lignin dan NDF. Penggunaan bahan perekat berbeda dalam pembuatan wafer tidak memengaruhi kerapatan partikel tapi memengaruhi (P0,05) daya serap air dan fraksi serat (ADF, lignin, hemiselulosa, NDF, dan selulosa). Interaksi sumber filtrat dalam pengolahan pelepah sawit dengan bahan perekat dalam pembuatan wafer memengaruhi (P0,05) fraksi serat dan kualitas fisik. Pelepah sawit yang diolah dengan FASP selanjutnya dibuat wafer berbahan perekat molases menghasilkan fraksi serat terbaik (NDF 43,03%; ADF 40,29%; lignin 12,62%; selulosa 24,63%; hemiselulosa 2,74%) dan pelepah sawit yang diolah dengan FATK selanjutnya dibuat wafer berbahan perekat tepung tapioka menghasilkan kualitas fisik terbaik.    (The effect of differences of adhesive and filtrates sources on fiber fraction and physical quality of complete ration wafer)  ABSTRAK. Palm fronds can be processed with the addition of rice husk ash filtrate (RHAF) and empty bunches ash filtrate (EBHF) and then used as an ingredient in making wafers. Difference source of the filtrate and adhesive material in wafer making affect the fiber fraction and physical quality. The study aimed to determine the effect of the filtrate source in the processing of palm fronds and different adhesives in wafer making on the fiber fraction and physical quality. A completely randomized design with a factorial pattern, 2 x 3 with 3 replications was used in the study. Factor F : filtrate source : F1 = RHAF and F2 = EBHF. Factor L : adhesive material, L1 = molasses; L2 = tapioca by product ; L3 = tapioca flour. The measured parameters are physical quality (particle density and water absorption) and fiber fraction (ADF, hemicellulose, lignin, cellulose, and NDF). Data were analyzed by analysis of variance and the differences were analyzed by DMRT test. Palm fronds treated with different filtrate sources did not affect the physical quality (water absorption and particle density) and cellulose and hemicellulose content, but affected (P0.05) the content of ADF, lignin and NDF. The use of different adhesives in wafer making did not affect particle density but affected (P0.05) water absorption and fiber fraction (ADF, lignin, hemicellulose, NDF, and cellulose). The interaction of the filtrate source in the processing of palm fronds with the adhesive in wafer making affected (P0.05) the fiber fraction and physical quality. Palm fronds which were processed with RHAF then formed wafers with molasses as an adhesive, producing the best fiber fraction (NDF 43.03%; ADF 40.29%; lignin 12.62%; cellulose 24.63%; hemicellulose 2.74%) and palm fronds which were processed with EBAF then formed wafers with tapioca flour adhesive, resulting in the best physical quality

    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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    Evaluation of ensiled soy sauce by-product combined with several additives as an animal feed

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    Aim: The present experiment aimed to evaluate the use of different additives, i.e., lactic acid bacteria (LAB) inoculant, tannin extract, and propionic acid, on the chemical composition, fermentative characteristics, and in vitro ruminal fermentation of soy sauce by-product (SSB) silage. Materials and Methods: SSB was subjected to seven silage additive treatments: Fresh SSB, ensiled SSB, ensiled SSB+LAB, ensiled SSB+2% acacia tannin, ensiled SSB+2% chestnut tannin, ensiled SSB+0.5% propionic acid, and ensiled SSB+1% acacia tannin+1% chestnut tannin+0.5% propionic acid. Ensiling was performed for 30 days in three replicates, and each replicate was made in duplicate. The samples were evaluated for their chemical composition and silage fermentation characteristics and were tested in an in vitro rumen fermentation system. Results: In general, the nutrient compositions did not differ among the tested SSBs in response to the different additives used. The addition of tannins, either acacia or chestnut, and propionic acid significantly decreased the pH of the ensiled SSB (p<0.05). The addition of several additives (except LAB) decreased the ammonia concentration in SSB silage (p<0.05). The total volatile fatty acids in the in vitro rumen fermentation profile of the ensiled SSB were not significantly altered by the various additives applied. The addition of some additives, i.e., ensiled SSB+LAB and ensiled SSB+2% acacia tannin, reduced the digestibility values of the SSB (p<0.05). Different silage additives did not significantly affect methane production, although the addition of acacia tannins tended to result in the lowest methane production among treatments. Conclusion: The use of additives, particularly 2% acacia tannins, can reduce proteolysis in SSB silage
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