1,720,954 research outputs found
ANALISIS MORFOMETRIK CEMPEDAK MENTAWAI Artocarpus integer (Thunb.) Merr (MORACEAE)
Full text linkPenelitian ini menganalisis perbedaan morfologi Artocarpus integer dengan analisis morfometrik yang telah dilakukan dari bulan November 2017 sampai September 2018. Penelitian ini bertujuan untuk mengetahui variasi karakter morfologi A. integer di Siberut Mentawai dan daratan Sumatera Barat. Hasil menunjukkan bahwa Artocarpus integer tidak mempunyai karakter morfologi daun spesifik yang membedakan masing-masing lokasi. Karakter morfologi spesifik yang membedakan antar lokasi diperlihatkan pada karakter morfologi buah. Kluster yang terbentuk dalam dua kelompok utama, namun kedua kelompok memuat individu yang berasal dari semua lokasi. A. integer di Siberut Mentawai dan daratan Sumatera Barat masih berada dalam satu spesies dan tidak terdapat variasi karakter yang tinggi
ANALISIS MORFOMETRIKA GEOMETRIS PUTATIF HIBRID ALAM ANTARA Nepenthes gymnamphora Reinw. ex Nees DENGAN Nepenthes inermis Danser
Full text linkBerdasarkan pengamatan pendahuluan dilapangan terhadap populasi Nepenthes yang terdapat di Gunung Kunyit, Kabupaten Kerinci, ditemukan beberapa jenis Nepenthes yang hidup secara simpatrik, yaitu N. gymnamphora dengan N. inermis. Selain itu ditemukan pula populasi Nepenthes yang diduga merupakan hibrid alam dari kedua jenis tersebut. Takson yang belum teridentifikasi ini secara morfologi kantong memiliki karakter intermediate dengan kedua spesies lain. Namun, diperlukan analisis untuk membuktikan bahwa taksa tersebut merupakan hibrid alam. Penelitian ini dilakukan dengan pendekatan morfometrika geometris. Kantong Nepenthes difoto dari tiga sudut pandang yang berbeda dan kemudian dilakukan analisis outline berbasis Fourier (Elliptical Fourier analysis). Selanjutnya dilakukan analisis menggunakan Principal Component Analysis (PCA) dan multivariate analysis of variance (MANOVA). Analisis data dilakukan menggunakan R Statistical Software. Total Nepenthes yang diperoleh pada penelitian ini adalah 18 sampel (6 sampel pada setiap spesies). Hasil penelitian menunjukan adanya variasi pada bentuk kantong putatif hibrid alam antara spesies N. gymnamphora dengan N. inermis. Karakter yang menunjukkan variasi terdapat pada bentuk kantong pada tampilan depan, posisi mulut kantong dan bentuk bagian bawah kantong pada tampilan samping dan ukuran lid kantong pada tampilan lid. Nepenthes yang memiliki karakter bentuk intermediate dengan kedua tetuanya (Nepenthes gymnamphora dan Nepenthes inermis) merupakan individu hibrid alam
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
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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