1,720,974 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
Kajian Performansi Mesin Pendingin Absorpsi Intermitten Menggunakan Fluida Kerja Ammonia – Air
Full text linkPenanganan komoditi pertanian seperti buah-buahan maupun sayuran pasca panen yang cepat dan tepat mutlak diperlukan karena produk tersebut mudah rusak dan tidak tahan lama (perishable) pada suhu tinggi. Salah satu cara untuk mengatasi hal tersebut adalah dengan penyimpanan dalam suhu rendah melalui proses pendinginan (refrigerasi). Metode pendinginan alternatif untuk mengatasi masalah yang dihadapi oleh sistem pendingin kompresi uap adalah menggunakan sistem pendinginan absorpsi. Sistem pendinginan absorpsi dalam pengoperasiannya menggunakan energi panas yang dapat diperoleh dari sumber energi terbarukan dan menggunakan refrigeran alami. Konstruksi yang sederhana dan mudah untuk dibawa (portabel) serta mudah pengoperasiannya membuat mesin pendingin absorpsi intermitten sesuai digunakan untuk pendinginan buah-buahan dan sayuran dalam skala kecil. Penelitian ini bertujuan untuk menguji kinerja dan menganalisa parameterparameter yang mempengaruhi performa dari mesin pendingin absorpsi intermitten tipe icyball menggunakan fluida kerja ammonia – air
Komposit DESAIN KOMPOSISI BAHAN KOMPOSIT YANG OPTIMAL BERBAHAN BAKU UTAMA LIMBAH AMPAS SERAT TEBU (BAGGASE): Material Komposit
No full textBahan baku atau material komposit sebagai alternatif bahan baku non logam dipilih pada bidang industri karena memiliki sifat ketahanan korosi yang lebih baik, karakteristik yang dapat dikontrol serta berat yang lebih ringan dan biaya produksi yang murah. Upaya yang dilakukan melalui inovasi desain bahan baku utama komposit yang memiliki keunggulan serta lebih aman dan ramah terhadap lingkungan. Salah satu jenis serat alam yang sangat potensial adalah ampas serat tebu (baggase). Ampas serat tebu merupakan limbah dari proses pengolahan gula yang pemanfaatannya kecil. Sehingga diperkirakan sebanyak 40 % dari ampas tebu tersebut belum dimanfaatkan secara optimal .
Melihat dari potensi tersedianya bahan baku, maka penelitian ini diarahkan untuk pemanfaatan limbah ampas serat tebu sebagai serat utama dengan kombinasi bahan baku pendamping berupa serat batang pisang dan serat/sabut kelapa, yang bertjuan untuk menentukan kekuatan bending dan kekuatan tarik dari hasil komposisi level faktor optimal dari tree in one of material komposit yang dilakukan, baik bahan baku serat maupun bahan perekatnya. Tahapan penelitian diawali dengan penerapan metode desain robust dari indentitifikasi variabel penelitian hingga pelaksanaan eksperimen dengan penentuan level faktor kualitas dan ortogonal array yang sesuai dan replikasi 2 kali, maka diperoleh desain komposisi level optimal pada eksperimen ke-4 dimana komposisi bahan baku 70%, 10%, 20% ( Matrik + Filler) dengan posisi struktur serat Searah, perekat yang sesuai memakai resin epoxy diperoleh rata–rata kekuatan bending sebesar 8,2404 MPa dan rata-rata kekuatan tarik sebesar 2,992748718 MPa, dan hasil desain komposisi bahan baku komposit level optimal ini berharap dapat meningkatkan kualitas bahan baku komposit dari serat alami tentunya perlu dilakukan treatment spesifik penelitian lanjutan yang lebih sempurna dan produksi komposit yang dihasilkan dapat diterima di pasarkan.
Kata Kunci : Ampas serat tebu, Komposit, desain komposisi optima
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
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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