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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
PENGARUH TANIN TERHADAP SEKRESI MUCUS Parmarion pupillaris (KEONG KERE) DAN Filicaulis bleekeri (RESPO) HAMA PADA TANAMAN KUBIS DI DESA MOJOREJO CURUP
No full textPenelitian ini bertujuan untuk mengetahui pengaruh tanin terhadap sekresi
mucus Parmarion pupillaris (keong kere) dan Filicaulis bleekeri (respo). Rentang
waktu penelitian mulai bulan Juli sampai dengan September 2005 dan penelitian
dilakukan di Laboratorium PHPT Mojorejo Curup. Tahapan penelitian yang dilakukan
yaitu pengumpulan dan pemeliharaan keong kere dan respo, uji penjajakan dan uji
perlakuan. Rancangan percobaan yang digunakan yaitu Rancangan Acak Lengkap
(RAL) dengan 6 perlakuan, masing-masing perlakuan digunakan 4 kali ulangan, tiap
perlakuan digunakan 6 ekor hewan uji. Hasil berat mucus yang diperoleh ini dianalisis
dengan menggunakan Uji Keragaman Anova. Jika F hitung > F tabel, maka dilanjutkan
dengan uji Duncan. Dari hasil uji penjajakan didapat 6 kisaran konsentrasi yang
digunakan dalam uji perlakuan yaitu 0 ppm (kontrol), 200 ppm, 400 ppm, 600 ppm, 800
konsentrasi tanin terhadap berat mucus keong kere pada pengamatan 1 dan 6 jam
dengan nilai koefisien korelasi (r) hitung yaitu 0,96 dan 0,65 (a: 0,01) dan korelasi sangat
nyata antara konsentrasi tanin terhadap berat mucus respo terjadi pada pengamatan 1, 6
dan 12 jam dengan nilai r hitung yaitu 0,55; 0,76 dan 0,92 (a: 0,01). Penurunan bobot
tubuh tertinggi pada keong kere setelah 24 jam perlakuan pada konsentrasi 400 ppm
sebesar 8,6 %; pada 48 jam dengan konsentrasi 1000 ppm sebesar 11,4 %; pada 72 jam
dengan konsentrasi 600 ppm sebesar 12,7 % dan pada 96 jam dengan konsentrasi 800
ppm sebesar 11,6 %. Tetapi pada respo penambahan bobot tubuh, dengan prosentase
tertinggi pada 24, 48, 72 dan 96 jam setelah uji perlakuan pada konsentrasi 1000 ppm
sebesar 15,2 %; 11,1 %; 6,1 % dan 1,8 %
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
UJI EFEKTIVITAS EKSTRAK KULIT BUAH MANGGIS (Garcinia mangostana L,) TERHADAP PENYEMBUHAN LUKA BAKAR PADA MENCIT (Rattus novergicus)
No full textPenelitian ini bertujuan untuk mengetahui tingkat efektivitas serta
menentukan konsentrasi efektif ekstrak kulit buah manggis Garcinia mangostana L, terhadap penyembuhan luka bakar pada mencit Rattus novergicus. Pembuatan sampel ekstrak kulit buah manggis dilakukan dengan cara ekstraksi dengan pelarut methanol 96%, dengan perbandingan antara pelarut dan serbuk kulit buah manggis adalah 4:1. Uji efektivitas ekstrak kulit buah manggis terhadap luka bakar dilakukan dengan cara mengaplikasikannya pada mencit betina Rattus novergicus. Mrncit betina dilukai pada bagian punggungnya dengan penginduksi panas yang berupa lempengan logam berukuran 2 x 2 cm dan bersuhu 80
0
C yang dihubungkan dengan elemen pemanas dengan voltase 220 Volt selama 5 detik. Pengujian efektivitas dibagi menjadi enam kelompok perlakuan yaitu kontrol negatif, kontrol positif dengan obat komersil Bioplacenton serta empat kelompok dengan ekstrak kulit buah manggis Garcinia mangostana L, dengan konsentrasi berturut-turut 0,60%, 2,60%, 4,85% dan 6,25%. Hasil penelitian menunjukkan bahwa kelompok uji dengan konsentrasi ekstrak kulit buah manggis sebesar 2,60% merupakan konsentrasi yang paling efektif jika dibandingkan dengan kelompok kontrol negatif dan kontrol positif dengan waktu kesembuhan pada hari ke 15. Analisis menggunakan ANOVA satu faktor dan uji BNT menunjukkan bahwa penggunaan ekstrak kulit buah manggis dengan berbagai konsentrasi terhadap kesembuhan luka bakar pada mencit menunjukkan perbedaan yang bermakna dengan kontrol negatif (TPO)
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
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