1,720,960 research outputs found
KEANEKARAGAMAN DAN KELIMPAHAN IKAN DI DANAU TES, BENGKULU SUATU UPAYA KONSERVASI SECARA IN-SITU
No full text<p><em>The research of the diversity and abundance of fish had been done at Tes Lake at the province of Bengkulu by using in-situ conservation. Observation and collecting of samples had been done in the mid of August to the mid of November 2002. Collecting of samples was done in 4 stations. There are 21 species of fish included 18 genera and 12 families which had been caught using gillnet (jaring insang), cast net (jala), fish pot (lukah/bubuh), fishline (pancing/tajur), and dip net (serok). Cyprinidae is the fish family which has most variety (8 species), while other families have only 2 and 1 species. The species of fish which had been caught were mostly river fish (freshwater fish). Based on the index of diversity (H’), the diversity of fish is medium between 0.78 – 1.27 with the highest diversity index is at station I (1.27) and the lowest is at station IV (0.78). The spread of fish based on uniformity index (E) is about 0.33 – 0.49 with the highest uniformity index is at station III (0.49) and the lowest is at station IV (0.33). The total abundance of fish which are collected during the research is 13,030 with the highest abundance is at station IV (4,643 fish) and the lowest is at station III (1,171 fish). Species of fish that are abundance and predominant are Puntius binotatus (C.V.) and Osteochilus hasseltii (C.V.) compared with others. The value of CPUE is 2.75 kg/trip with the highest value of CPUE is at station IV (4.6 kg/trip) and the lowest are at station II and III (1.7 kg/trip). The water quality of Tes Lake is still able to fishes living and fishery. The kinds of fish which are really valuable economically but it’s extinction being threatened are Anguilla marmorata Benn. and Tor douronensis (C.V.)</em>.</p></jats:p
Inbreeding depression level of post-larvae freshwater prawn (Macrobrachium rosenbergii) from several hatcheries in Java, Indonesia
No full textBinur R, Pancoro A. 2017. Inbreeding depression level of post-larvae freshwater prawn (Macrobrachium rosenbergii) from several hatcheries in Java, Indonesia. Biodiversitas 18: 609-618. Inbreeding accumulation will tend to reduce genetic variation or depressed of the prawn fry produced. This problem has caused a decrease in production and quality of prawns culture in Indonesia. The purpose of this study is to measure the level of inbreeding depression prawn fry generated from several hatcheries in Java by microsatellite markers. There is four microsatellite locus to be used i.e Prk9A/T1, Prk4G/T1, TGFP16, and Mr8-88. The amplification of fourth locus using PCR with 6-carboxy-fluorescine (6-FAM) label. The number of alleles (Na) from fourth locus is Mr8-88 (11 alleles), TGFP16 (10 alleles), Prk4G/T1 (9 alleles), dan Prk9A/T1 (5 alleles), respectively. The level of polymorphism locus from highest to lowest is locus Prk4G/T1 (0.703), Prk9A/T1 (0.507), TGFP16 (0.410), and Mr8-88 (0.370), respectively. Inbreeding depression level of postlarvae (PL) M. rosenbergii tend to moderate with BBI Ciamis (He 0.444), BBUG Samas (He 0.514), LRPTBPAT Sukamandi (He 0.519), and UPBL Probolinggo (He 0.530), respectively. AMOVA analysis showed about 8.0% genetic variation among populations. From these results, it can be concluded that the PL produced indicated have been depressed. Post-larvae prawns produced from fourth hatcheries is not recommended to be a broodstock but can be used for cultivation for farmers.</jats:p
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
The Diversity of Freshwater Fishes in Haya, Mamberamo-Papua
No full textThis research aims improved data of the species and abudance freshwater fish for conservation planning Mamberamo region. The survey was lasted 18 days from 5 February to 24 April 2008 in several habitat consists river, creeks, oxbowlake and stream. A total at least 20 species in 17 genera and 14 families were collected were captured using gillnet, castnet, handnet, longline and poisson plant from Deris sp. Two species new record for Mamberamo that is Chilaterina lorentzi was previously know only from Tawarin river on the north coast Papua about 200 km west Jayapura and Puive creek, tributary of the Pual River near Vanimo, PNG and Monopterus albus (intoduction fish) was not previously know in Mamberamo although Papua. The generally freshwater fish fauna were collected in Haya about 70 % similar to record from Dabra.</jats:p
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
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