1,720,959 research outputs found
Orchid inventory in Bantimurung-Bulusaraung National Park, South Sulawesi, Indonesia
No full textAbstract. Puspitaningtyas DM. 2017. Orchid inventory in Bantimurung-Bulusaraung National Park, South Sulawesi, Indonesia. Biodiversitas 18: 341-350. Bantimurung-Bulusaraung National Park, commonly abbreviated as Babul National Park, is in South Sulawesi. It occupies an area of 43,750 hectares between 119o34'17"-119o55'13" East and 4o42'49"-5o06'42" South. Babul National Park is an area in the transition zone between Asia and Australia and therefore has a unique flora and fauna. The study reported here aimed to inventory the orchid species in the Babul National Park area and to determine the orchid diversity in the area. The results of the study recorded approximately 60 orchid species found in Babul National Park. These were representative of 32 genera and consisted of 42 species of epiphytic orchids and 18 species of terrestrial orchids. The terrestrial orchid Habenaria beccarii and the epiphytic orchid Aerides inflexa were the most common orchids found, and were spread evenly throughout the Babul National Park area. Coelogyne celebensis and Aerides inflexa are endemic orchids of Sulawesi found within the Park. Three species of the genus Nervilia, i.e. N. punctata, N. plicata, and N. aragoana, were also found in this area. Some species of orchid such as Tropidia angulosa, Coelogyne rumphii and Dendrobium lampongense were found as new records in Sulawesi.
Keywords: Bantimurung-Bulusaraung National Park, inventory, orchid, South Sulawesi</jats:p
Penyimpanan Biji Anggrek Coelogyne Spp. Untuk Konservasi Ex Situ
No full textCoelogyne merupakan anggrek asli Indonesia yang mempunyai ukuran bunga relatif besar dan warna menarik. Penyimpanan biji Coelogyne perlu dilakukan untuk menjaga keragaman spesies tersebut. Percobaan penyimpanan biji pada tujuh spesies anggrek Coelogyne pada suhu -20oC telah dilakukan selama empat tahun di PKT KR?LIPI. Rancangan percobaan yang digunakan adalah Rancangan Acak Lengkap, dengan faktor media yang diperlakukan pada masing-masing spesies Coelogyne. Empat macam media kultur yang digunakan untuk menguji perkecambahan biji adalah KCA (Knudson C), KC (modifikasi Knudson C), VW (modifikasi Vacin and Went), dan HS (modifikasi Hyponex). Uji viabilitas biji diamati setelah biji disimpan selama 0, 1, 2, 3, 6, 9, 12, 18, 24, 36, 48 bulan. Hasil penelitian menunjukkan bahwa biji Coelogyne spp. mampu berkecambah di empat media percobaan. Viabilitas biji Coelogyne spp. menurun dalam waktu tiga bulan, enam bulan, sembilan bulan, dan seterusnya tergantung pada spesies Coelogyne tersebut. Biji Coelogyne yang dapat disimpan selama 1?2 tahun adalah C. pandurata, C. asperata dan C. rumphii, sedangkan biji yang dapat disimpan selama tiga tahun adalah biji C. foerstermannii dan C. pulverula. Biji C.rochussenii dan C. celebensis dengan masa hidup yang singkat harus ditanam segera setelah panen, dan selanjutnya disimpan dalam bentuk kultur bibit in vitro atau biji sintetis melalui enkapsulasi protocorm
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
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