1,720,970 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
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
RESPON PERTUMBUHAN DAN HASIL KENTANG (Solanum tuberosum L.) DATARAN MEDIUM VARIETAS DTO 28 TERHADAP DOSIS PUPUK NPK DAN PGPR
Get PDFDi Indonesia, budidaya kentang umumnya dilakukan di dataran tinggi. Peningkatan produktivitas kentang dapat dilakukan dengan budidaya kentang di dataran medium. Salah satu faktor pembatas produksi kentang adalah ketersediaan unsur hara dalam tanah. Penggunaan varietas yang tepat dengan optimalisasi dosis pupuk NPK yang dibantu oleh PGPR merupakan salah satu cara untuk meningkatkan hasil kentang dataran medium. Penelitian ini bertujuan untuk mempelajari interaksi antara dosis NPK dengan waktu pemberian PGPR terhadap pertumbuhan dan hasil kentang di dataran medium. Penelitian dilaksanakan di Desa Junrejo, Kota Batu dengan ketinggian tempat 600 m diatas permukaan laut dan dimulai pada bulan Januari hingga Mei 2017. Penelitian ini merupakan percobaan faktorial dengan metode Rancangan Acak Kelompok yang terdiri atas 2 faktor. Faktor pertama adalah dosis NPK, yaitu tanpa NPK (P0), 600 kg/ha NPK (P1), 900 kg/ha NPK (P2), 1.200 kg/ha NPK (P3). Faktor kedua adalah waktu pemberian PGPR, yaitu saat tanam (T1), saat tanam dan 15 hari setelah tanam (T2), saat tanam, 15, dan 30 hari setelah tanam (T3). Hasil penelitian menunjukkan bahwa interaksi antara dosis NPK dan waktu pemberian PGPR mempengaruhi bobot umbi kentang per petak dan per hektar. Dosis NPK mempengaruhi jumlah umbi per tanaman dan bobot umbi per tanaman. Namun, pemberian PGPR pada berbagai waktu tidak mempengaruhi pertumbuhan dan hasil kentang
Pengaruh Jenis dan Dosis Pupuk Nitrogen terhadap Pertumbuhan dan Hasil Tanaman Selada (Lactuca sativa L.)
Get PDFSelada (Lactuca sativa L.) merupakan tanaman sayuran dengan bentuk daun bergelombang dan berwarna hija kekuningan. Tanaman Selada  merupakan tanaman semusim yang dapat tumbuh pada daerah tropis dan subtropis serta memiliki total produksi yang cukup tinggi di Asia. Duaja (2012) menjelaskan bahwa tanaman selada memliki kandungan mineral, diantaranya iodium, fosfor, besi, kalsium, kalium, vitamin A, asam folat, dan beta karoten yang penting bagi kesehatan. Pemupukan nitrogen merupakan upaya untuk membantu pertumbuhan tanaman agar dapat berkembang dan meningkatkan produksi  tanaman. Penelitian meng-gunakan Rancangan Acak Kelompok (RAK) terdiri dari sepuluh perlakuan yaitu N0 : Tanpa pupuk N, N1 : NPK 50 kg N / ha, N2 : NPK 75 kg N / ha, N3 : NPK 100 kg N / ha, N4 : Urea 50 kg N / ha, N5 : Urea 75 kg N / ha, N6 : Urea 100 kg N / ha, N7 : ZA 50 kg N / ha, N8 : ZA 75 kg N / ha, N9 : ZA 100 kg N / ha. . Variabel pengamatan yang digunakan adalah luas daun, bobot kering total tanaman, bobot segar total tanaman. Hasil penelitian pupuk ZA dosis 100kg/ha menunjukkan hasli luas daun lebih tinggi dibandingkan dengan perlakuan tanpa pupuk nitrogen. Pada parameter bobot kering tanaman pupuk ZA dosis 100kg/ha dan pupuk NPK 100kg/ha menunjukkan hasil bobot kering tinggi dibandingkan perlakuan tanpa pupuk nitrogen. Parameter hasil bobot segar total tanaman menunjukkan pupuk ZA 100kg/ha  lebih tinggi dibandingkan dengan perlakuan tanpa pupuk nitrogen
Pengaruh Pupuk Fosfor Terhadap Pertumbuhan Dua Varietas Tomat Lokal
Get PDFFosfor berperan penting pada pertumbuhan tanaman. Kekurangan fosfor dapat menye-babkan tanaman kerdil. Saat ini, tidak ada rekomendasi pupuk fosfor yang tersedia pada tanaman tomat varietas lokal. Tujuan penelitian ini adalah untuk mempelajari pengaruh pemberian pupuk fosfor pada pertumbuhan tanaman tomat, mempelajari respon varietas tomat lokal pada pemberian dosis pupuk fosfor yang berbeda, serta mempelajari interaksi varietas tomat dengan dosis pupuk fosfor. Penelitian ini dilaksa-nakan di desa Bocek, Malang, pada bulan maret sampai juli 2017. Metode penelitian menggunakan Rancangan Acak Kelompok (RAK) yang disusun secara faktorial dan terdiri dari dua faktor. Faktor pertama adalah Varietas Tomat lokal (V) yaitu Varietas Karina (V1) dan Varietas Mawar (V2). Faktor kedua adalah Dosis pupuk Fosfor (P) yang terdiri dari 5 taraf : (75, 100, 125, 150 dan 175 kg.P2O5.ha-1). Hasil penelitian menunjukkan bahwa tidak terjadi interaksi nyata pada parameter pertum-buhan, namun pemupukan fosfor berpengaruh nyata pada tinggi tanaman dan jumlah daun. Varietas Mawar memiliki rata-rata tinggi tanaman dan jumlah daun lebih tinggi daripada varietas Karina. Pemberian pupuk fosfor sebanyak 175 kg.P2O5.ha-1 mampu mengoptimalkan pertumbuhan tanaman
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