1,720,973 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
Population dynamics of horse mussels Modiolus modulaides (Röding, 1798) in Kendari Bay, Southeast Sulawesi, Indonesia
Full text linkHorse mussels are bivalves found in Kendari Bay and are frequently consumed by the people in the surrounding coastal communities. The population dynamic of this mussel species in Kendari Bay is not yet fully understood. This study aims to determine the size structure, growth, mortality, and exploitation rate of horse mussels in Kendari Bay. This research was carried out in Kendari Bay on the outskirts of Southeast Sulawesi, Indonesia, from January to December 2019. Horse mussel samples of all different sizes were randomly collected from different points of the area of the mussel habitat. The collected samples were counted in total, and their shell length was measured using a caliper with an accuracy of 0.05 mm. The size, growth, mortality, and exploitation rate data were analyzed using the Bhattacharya method, inverse von Bertalanffy, Pauly empirical, and length-converted catch curve accommodated in the FiSAT II. The results showed that the horse mussels comprised two dominant size groups, with one dominating most of the months. The asymptotic length (L?) of the mussels was 9.7 cm, with a growth coefficient (K) of 1.1 yr-1. Moreover, the growth performance index of the mussels was (Ø)'=2.01 yr-1, and the maximum age (Tmax) was 2.73 years. The generated inverse von Bertalanffy equation for the horse mussels was Lt = 9.7-(9.7-0.025)e-1.1t. The natural mortality (M), fishing mortality (F), and total mortality (Z) of the horse mussels were 2.73 yr-1, 1.17 yr-1, and 3.90 yr-1, respectively. The horse mussels in Kendari Bay were well within the underexploited category, with an exploitation rate of 0.30
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
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
Estimasi Biomassa Mangrove Menggunakan NDVI (Normalized Difference Vegetation Index) di Desa Soligi, Kabupaten Halmahera Selatan
No full textMangrove merupakan tumbuhan tingkat tinggi yang tumbuh pada habitat intertidal antara daratan dan laut di daerah tropis serta subtropis. Keberadaan mangrove sangat penting dalam mengurangi risiko bencana akibat perubahan iklim karena kemampuannya yang signifikan dalam menyimpan karbon pada biomassa dan sedimen. Penelitian ini bertujuan untuk menganalisis biomassa ekosistem mangrove berdasarkan kategori NDVI (Normalized Difference Vegetation Index) di pesisir Desa Soligi, Kecamatan Obi Selatan, Kabupaten Halmahera Selatan dengan total luas area 12,12 hektar dan total biomasa mencapai 899,78 ton. Kategori NDVI dibagi menjadi empat kelas yaitu: Sangat Rendah, Rendah, Sedang, dan Tinggi. Hasil analisis menunjukkan bahwa kategori Tinggi berkontribusi terbesar terhadap total biomasa dengan 639,94 ton/ha, terdiri dari 499,97 ton/ha untuk biomassa di atas tanah (AGB) dan 139,98 ton/ha untuk biomassa di bawah tanah (BGB). Sebaliknya, kategori Sangat Rendah menunjukkan nilai biomasa yang sangat rendah, yaitu 0,32 ton/ha. Temuan ini menekankan pentingnya pengelolaan dan konservasi ekosistem mangrove untuk meningkatkan kapasitas penyimpanan karbon dan mendukung keberlanjutannya
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
- …
