1,720,967 research outputs found
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
DEKOMPOSISI PEMBAKARAN MIKROALGA SPIRULINA PLATENSIS PADA VARIASI KADAR KATALIS ZINC OXIDESEBAGAI BAHAN BAKAR ALTERNATIF TERBARUKAN
No full textABSTRAK Huda, Muhammad Misbachul, Dekomposisi Pembakaran Mikroalga Spirulina Platensis Pada Variasi Kadar Katalis Zinc Oxide Sebagai Bahan Bakar Alternatif Terbarukan. Skripsi, Jurusan Teknik Mesin, Fakultas Teknik, Universitas Negeri Malang. Pembimbing: (I) Dr. Sukarni, S.T., M.T.(II) Rr. Poppy Puspitasari, S.Pd., M.T. Ph.D. Kata Kunci: Mikrolaga Spirulina platensis, Analisis thermogravimetric, dekomposisi pembakaran, ZnO. Menipisnya cadangan bahan bakar minyak dunia khususnya dari bahan bakar fosil yang tidak dapat diperbarui telah menimbulkan masalah berupa krisis energi. Banyak cara menangani masalah ini salah satunya dengan penghematan penggunaan. Namun, penghematan saja belum cukup menyelesaikan masalah. Perlu ada tindakan lebih dari sekedar mengurangi pemakaian misalnya dengan menciptakan energi terbarukan. Mikroalga dengan laju pertumbuhannya yang cepat, dan telah dilakukan penelitian bahwa mikroalga dapat menghasilkan biofuel, yakni biodiesel dan bioethanol, menjadikan latar belakang tulisan ini untuk meneliti mikroalga sebagai bahan bakar alternatif terbarukan, dengan dilihat dari dekomposisi pembakaran menggunakan katalis zinc oxide. Pengujian dilakukan dengan mikroalga Spirulina p. dibakar dengan pada suhu ruangan hingga suhu 1200 oC dengan laju pemanasan 10 oC/min pada udara atmosphere dengan laju udara 50 ml/min. dengan didapatkan bahwa, semakin tinggi kadar katalis, semakin banyak pula massa Spirulina p. yang dilepaskan pada saat pembakaran. Penelitian ini bertujuan untuk mengetahui dekomposisi pembakaran campuran mikroalga Spirulina p. dan zinc oxide sebagai bahan bakar terbarukan. Metode penelitian yang digunakan dalam penelitian ini adalah menggunakan penelitian eksperimental. Metode tersebut merupakan metode yang mengidentifikasi sifat mendasar terlebih dahulu pada material yang diteliti kemudian dilakukan beberapa pengujian untuk diketahui data dan info tema penelitian yang diangkat. Berdasarkan hasil penelitian dekomposisi pembakaran mikroalga Spirulina p. terjadi pada 4 tahap pembakaran. Tahap pertama merupakan tahap pelepasan kandungan moisture, tahap kedua adalah tahap dimana volatil matters terlepas, kemudian tahap ke tiga proses terdekomposisi dan terlepasnya fixed carbon, serta tahap ke empat adalah tahap akhir dari dekomposisi pembakaran, tahap ini merupakan proses dekomposisi lambat abu. Dibandingkan di antara lima variasi, kadar zinc oxide yang paling baik digunakan untuk campuran biomassa mikroalga Spirulina p. adalah 6% dan 9 % dari massa total sampel. Penambahan 6% dan 9% katalis zinc oxide dapat mempercepat laju kehilangan massa, zinc oxide dengan kadar 6% dan 9% juga efektif digunakan untuk menghilangkan moisture, volatil matter, dan fixed carbon jika dibandingkan dengan zinc oxide dengan kadar 3%, 12% dan 15%. Selain itu zinc oxide dengan kadar 6% dan 9% mampu menurunkan temperatur pembakaran masing-masing sekitar 13,7 oC dan 10,9 oC pada tahap pelepasan moisture. Zinc oxide dengan kadar 6%, dan 9% mampu menurunkan temperatur masing-masing sekitar 7 oC dan 4,8 oC pada laju pelepasan volatile matter. Pada pelepasan fixed carbon zinc oxide kadar 9% mampu menurunkan temperatur masing-masing sekitar 5 oC
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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