1,720,960 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
PENGARUH CEKAMAN KEKERINGAN TERHADAP PERTUMBUHAN DAN BEBERAPA KARAKTER MORFO-FISIOLOGIS TANAMAN NILAM
Full text linkCekaman kekeringan merupakan salah satu faktor abiotik yang sangat ber-pengaruh terhadap produktivitas nilam. Salah satu teknologi yang relatif murah dan efektif untuk menekan kerugian akibat adanya cekaman kekeringan adalah peng-gunaan varietas nilam yang toleran terha-dap cekaman kekeringan. Tujuan perco-baan ini adalah mendapatkan karakter morfo-fisiologis varietas dan nomor nilam yang toleran terhadap cekaman keke-ringan. Sebuah percobaan pot dilakukan di rumah kaca Balittro Bogor pada Februari – Agustus 2004. Percobaan menggunakan Rancangan Acak Lengkap (RAL) dengan 4 ulangan. Tujuh varietas dan nomor nilam yaitu Sidikalang, Tapak Tuan, Lhok Seumawe, Aceh Merah, TT 75, II-8, dan Girilaya ditanam di pot kayu berukuran 100 x 25 x 10 cm dan diberikan perlakuan cekaman kekeringan. Setelah benih di- tanam, semua pot disiram dengan air sampai jenuh dengan kapasitas lapang 100%. Selanjutnya semua pot diberikan perlakuan cekaman kekeringan dengan tidak memberikan penyiraman sampai umur 120 hari setelah tanam (HST). Parameter yang diamati adalah komponen pertumbuhan, produksi, dan kadar prolin daun. Hasil pengamatan pada umur 120 HST, terlihat bahwa komponen pertum-buhan dan produksi biomas varietas Girilaya paling tinggi diikuti oleh varietas Tapak Tuan. Produktivitas terendah dijum-pai pada varietas Sidikalang. Panjang mak-simum dan bobot segar akar serta kadar prolin di daun tertinggi juga dijumpai pada varietas Girilaya dan Tapak Tuan. Berda-sarkan data hasil pengamatan pertum-buhan, produksi, dan karakter morfo-fisiologi dari ketujuh varietas dan nomor nilam yang ketahanannya diuji terhadap cekaman kekeringan, mengindikasikan bahwa varietas dan nomor paling toleran adalah varietas Girilaya dari jenis nilam Jawa (Pogostemon heyeanus Benth). Sedangkan varietas yang paling toleran di antara nilam Aceh (Pogostemon cablin Benth) dan hasil induksi somaklonal adalah varietas Tapak Tuan. Oleh karena itu, untuk pengembangan nilam di daerah yang sering terjadi cekaman kekeringan, penggunaan varietas unggul Tapak Tuan dapat dianjurkan
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
RESPON DUA NOMOR HARAPAN PIRETRUM TERHADAP PEMUPUKAN
Full text linkResponses of two promising clones of pyrethrum to fertilizer applicationPyrethrum is one of the potential botani-cal pesticides to be further developed for the substitution of synthetic pesticide such as pyreth-roid, which is found to be harmful both to the environment and human being. Therefore, high yielding plant material with high pyrethrin content is a prerequisite for a continuous supply of raw material in botanical pesticides produc-tion. For that purpose, two promising clones of pyrethrum were assessed for their response to fertilizer application and conducted at Kayu Giyang village (1500 m asl) of Wonosobo re-gency, Central Java. Two promising clones of pyrethrum namely Prau 6 and Gunung Wates 45 were subjected to seven NPK fertilizer combina-tion treatments using Split Plot Design with three replications. The results showed that N and P fertilizer applications at the Kayu Giyang, Dieng highland were able in improving produc-tivity of pyrethrum by increasing flower number and flower fresh weight of both Prau 6 and Gunung Wates 45 clones, significantly. NPK application with medium dosage (100 kg N, 200 kg P, and 100 kg K/ha) was able to produce high productivity and fertilizer efficiency. However, there was no significant effect as compared to the high dosage application. Based on the nut-rient status and dry weight, it could be con-cluded that amount of N absorbed by plant was high, followed by K and P. Furthermore, based on the nutrient status, the P fertilizer absorbed by pyrethrum was relatively low and approxi-mately 20.00% from N absorbed. The pyrethrin contents from the two clones tested were relatively high (>1.00%).
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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