1,720,960 research outputs found
Karakter morfometrik meristik dan reproduksi ikan kuro (Eleutheronema tetradactylum, Shaw 1804) di Pantai Mayangan, Jawa Barat
No full textIkan kuro (Eleutheronema tetradactylum) merupakan jenis ikan tangkapan utama yang bernilai ekonomis, dan cenderung dieksploitasi di perairan pantai Mayangan. Upaya penangkapan yang cenderung berlebih dapat memengaruhi keberadaan ikan kuro di perairan. Untuk mengatasi hal itu perlu dilakukan upaya pengelolaan sumber daya ikan kuro. Penelitian ini dilakukan untuk mendeskripsikan aspek reproduksi ikan kuro meliputi, Tingkat Kematangan Gonad (TKG); mendeskripsikan ikan berdasarkan ciri morfometrik-meristik dan pola pertumbuhannya. Penelitian ini berguna sebagai sarana untuk mendukung penelitian dasar sehubungan informasi reproduksi ikan kuro khususnya di pantai Mayangan. Pengambilan contoh ikan kuro dilakukan selama enam bulan mulai bulan Mei- Oktober 2011 dengan interval waktu pengambilan contoh yaitu setiap satu bulan sekali. Pengambilan ikan menggunakan alat tangkap jaring insang (rampus) pada daerah muara sungai dan perairan sekitar pantai. Analisis laboratorium dilakukan di Laboratorium Biologi Makro 1. Hasil penelitian menunjukkan bahwa semua ikan kuro yang tertangkap berjumlah 147 ekor yang berjenis kelamin jantan dengan selang kelas ukuran panjang 140-259 mm belum mengalami matang gonad. Ikan yang didapat masih berukuran juvenil dan memiliki TKG I dan TKG II. Pada hasil analisis karakter meristik didapat rumus sirip dorsal D1. VIII; D2. I-II 13-17; A. II 13-17; P 14 -21 + 4 sirip filamen ; V I. 5; L.l 43-75. Hubungan panjang-berat bersifat allometrik positif dengan persamaan W= 0,000006L3,109
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
IPB (Bogor Agricultural University)
No full textRawa di Kota Palangkaraya merupakan tipe ekosistem rawa lebak (floodplain) yaitu genangan air yang terbentuk sebagai akibat luapan air sungai. Sekitar 16,67 % wilayah Kota Palangkaraya merupakan kawasan rawa lebak, terutama rawa lebak dari sungai Rungan. Keanekaragaman jenis ikan perairan tawar di dunia sebagian besar berada di kawasan rawa lebak tropika, bahkan rawa lebak di Kalimantan merupakan kawasan hot spot dari keanekaragaman ikan di Paparan Sunda. Perikanan penangkapan merupakan sumber penghasilan utama masyarakat tradisional yang tinggal di rawa lebak. Upaya konservasi keanekaragaman ikan cenderung hanya terbatas pada kawasan yang sudah ditetapkan sebagai kawasan suaka perikanan. Kawasan di luar itu yang justru memiliki wilayah yang luas, menghadapi ancaman eksploitasi ikan berlebih, dan kerusakan ekosistem. Oleh karena itu diperlukan upaya pengelolaan di luar kawasan konservasi dengan tujuan mempertahankan keanekaragaman ikan dan menjamin keberlanjutan mata pencaharian nelayan yang hidupnya bergantung pada ekosistem tersebut. Penelitian ini bertujuan untuk mengidentifikasi kondisi keanekaragaman ikan dan kondisi lingkungan ekosistem rawa lebak, mengidentifikasi faktor – faktor yang berpengaruh terhadap pendapatan nelayan, dan merumuskan model pengelolaan ekosistem rawa lebak yang mendukung keanekaragaman ikan dan peningkatan pendapatan nelayan
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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