1,720,984 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
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
Pengembangan Industri Kimia Berbasis Sumberdaya Alam Hayati Sebagai Alternatif Prospektif Menuju Pembangunan Nasional Berkelanjutan
No full textBACK TO NATURAL BERSAMA KIMIA BAHAN ALAMKimia bahan alam dalam pengertian luas adalah semua konstituen kimiawi yang diperoleh dari alam, baik yang berasal dari hewan maupun tumbuhan termasuk pula hasil-hasil pertambangan. Namun dalam tulisan ini, yang dimaksudkan sebagai kimia bahan alam adalah konstituen “organik bahan alam” yang berasal dari sumberdaya hayati, lebih khusus metabolit sekunder yang akhir-akhir ini semakin banyak mendapat perhatian para peneliti kimia dan semakin diandalkan sebagai penopang perkembangan industri maju diberbagai negara. Selogan Back to natural semakin meluas dan menjadi alternatif dalam penyelesaian berbagai masalah besar yang dihadapi masyarakat global saat ini. Terutama dalam pemenuhan bahan sandang, pangan serta bahan obat-obatan yang semakin meningkat tajam. Meski muncul sebagai alternatif baru, kiranya selogan tersebut dimaknai sebagai kebersesamaan dengan alam, tidak menjadikan alam semata-mata sebagai objek yang terus dieksploitasi tanpa terkendali.“Beri yang terbaik untuk alam, karenanya kita akan mendapatkan terbaik pula darinya.” Selama ini, sumber devisa pembangunan nasional bertumpu pada bahan alam berupa hasil-hasil tambang. Eksploitasi komponen kimia alam tak-terbaharukan yang terjadi selama ini semakin memperihatinkan, sumberdaya alam berupa material tambang batu bara, emas, nikel, gas dan minyak bumi semakin menipis, situasi ini kian menyeret kita pada kebangkrutan. Karenanya diperlukan reorientasi pengelolaan dan pemanfaatan sumberdaya alam yang lebih bijak dan berkelanjutan. Sebagai negara yang memiliki sumberdaya alam hayati melimpah bangsa Indonesia seharusnya memprioritaskan pengembangan IPTEKS yang berorientasi pada sumber daya alam hayati.Disampaikan dalam Seminar Nasional Kimia, Himpunan Kimia Indonesia Cab. Kalimantan Timur, Samarinda 9 November 201
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