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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
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
Effectiveness of Defibrillation on the Cellulose Nanofibers Isolation from Water Hyacinth (Eichornia Crassipes) Stem by Steam Explosion Pretreatment and Ultrasonication with Time Variation
No full textWater hyacinth is among the world's top 10 invasive weeds due to its adaptability and high growth rate. Its high cellulose content makes water hyacinth a potential source of cellulose nanofiber (CNF) for alternative commercial polymers that are difficult to degrade by nature. CNF isolation that only involves chemical treatment in purifying cellulose generally uses chemicals that are less environmentally friendly. In this study, steam explosion pretreatment was used to optimize the chemical treatment in cellulose purification and ultrasonication defibrillation in CNF isolation. The removal of FTIR spectra at peaks of 1730 cm-1, 1510 cm-1, and 1260 cm-1 as well as the drastic increase of crystallinity index in XRD and degradation temperature in TGA indicated that the chemical treatmen used successfully removed lignin and hemicellulose. At ultrasonication defibrillation time variations of 1, 2, and 3 hours, CNF with diameters of 24.30±0.62, 12.06±0.34, and 8.9±0.26 nm were produced where the diameter reduction was supported by an increase in the contact angle value. The percent yield of CNF at various ultrasonication times was 98%, 96%, 92%, respectively, and the slight decrease in the crystallinity index and degradation temperature of CNF of about 71% and 304ºC indicate that the ultrasonication method has little impact on crystal destruction and shortening of cellulose chains. Comparison with previous studies shows steam explosion pretreatment successfully reduces and simplifies the use of chemicals by damaging the initial structure of lignocellulose. The visual analysis and stability of the suspension dispersion, nanofiber diameter, FTIR spectra, crystallinity index, contact angle and thermal properties of the CNF produced in this study are comparable to previous studies so that the ultrasonication method is effective due to the lower mechanical defibrillation power used.105 PagesSkripsi Sarjan
PENGARUH FAKTOR-FAKTOR GEOGRAFI TERHADAP PERUBAHAN NILAI LAHAN DI KECAMATAN PARONGPONG
Get PDFPenilitian ini dilatarbelakangi oleh permasalahan perubahan nilai lahan yang signifikan di hampir setengah wilayah Kecamatan Parongpong pada beberapa tahun terakhir. Perubahan tersebut dapat dipengaruhi oleh faktor-faktor geografi antara lain faktor lokasi, aksesbilitas, infrastruktur, morfologi dan kegunaan.
Metode yang digunakan dalam penelitian ini adalah metode Deskriptif, dengan teknik pengumpulan data observasi, interpretasi peta, wawancara, studi literatur, dan studi dokumentasi. Dalam menganalis data digunakan analisis persentase untuk melihat distribusi frekuensi data, kemudian menggunakan rumus Chi Square untuk mengukur terdapat pengaruh atau tidak, dan menggunakan rumus Korelasi Pearson’R untuk mengukur seberapa kuat kepengaruahan atau ketidakpengaruhan.
Hasil analisis data menunjukan bahwa secara keseluruhan nilai lahan di Kecamatan Parongpong mengalami peningkatan mulai dari tahun 2000 sampai dengan tahun 2012. Peningkatan paling tinggi terjadi di sebelah Timur yaitu di Desa Cihideung dan Desa Cigugur Girang dengan perubahan rata-rata Rp 1.168.386 (agak cepat). Kemudian disebelah Selatan yaitu di Desa Ciwaruga dan Desa Sariwangi sebesar Rp 760.913 (sedang). Terakhir disebelah Barat dan Utara yaitu Desa Cihanjuang, Cihanjuang Rahayu dan Karyawangi sebesar Rp 613.112 (agak lambat). Faktor-faktor geografi yang mempengaruhi perubahan nilai lahan di Kecamatan Parongpong mulai dari tahun 2000 sampai tahun 2012 antara lain faktor infrastruktur dengan besar pengaruh 0,135, diikuti kegunaan sebesar 0,119, lokasi sebesar 0,111, morfologi dengan rata-rata 0,034 dan terakhir aksesbilitas sebesar 0,025.
Kata Kunci : Lokasi, Aksesbilitas, Infrastruktur, Morfologi, Kegunaan, Nilai Laha
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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