1,720,959 research outputs found
Pomacentrus bangladeshius, a new species of damselfish (Perciformes, Pomacentridae) from Saint Martin's Island, Bangladesh
No full textHabib, Kazi Ahsan, Islam, Md Jayedul, Nahar, Najmun, Neogi, Amit Kumer (2020): Pomacentrus bangladeshius, a new species of damselfish (Perciformes, Pomacentridae) from Saint Martin's Island, Bangladesh. Zootaxa 4860 (3): 413-424, DOI: https://doi.org/10.11646/zootaxa.4860.3.
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
No full text“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
No full textWe 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
No full textWe 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
ASSESSMENT OF UNDERWATER BIODIVERSITY OF SAINT MARTIN'S ISLAND OF BANGLADESH
No full textAbstract
Occupying less than one percent of the ocean floor, reefs are home to more than
twenty-five percent of marine life. Saint Martin's Island (SMI) is the only island
in Bangladesh where a reef-like ecosystem is found. An underwater survey was
conducted to uncover the underwater biodiversity on this island in the winter
seasons from 2016 to 2019. The photographs of these species were captured by
scuba diving and snorkeling in a water depth of about 3 to 7 meters. The study
revealed 131 faunal and 18 floral species of different taxa viz. Bivalves (5
species), Crabs (5 spp.), Feather star (l sp.), Fireworm (l sp.), Fishes (53 spp.),
Flatworm (l sp.), Hard corals (27 spp.), Hermit crab (1 sp.), Jellyfishes (3 spp.),
Lobster (1 sp.), Octopus (1 sp.), Sea anemones (3 spp.), Sea cucumber (1 sp.), Sea
fans (8 spp.), Sea fern (1 sp.), Sea slug (6 spp.), Sea turtle (1 sp.), Sea snail (1 sp.),
Sea star (l sp.), Sea urchin (1 sp.), Sea whip (1 sp.), Sponges (3 spp.), Tubeworms
(4 spp.), Zoanthid coral (2 spp.), and Seaweed (18 spp.). Coral bleaching was also
observed in this study. The present study exposes the hidden beauties of rich
underwater biodiversity of this island to the people with the hope to take part in
supporting and conserving this island by the tourists, related stakeholders and
government.
Keywords: Saint Martin' Island, underwater survey, snorkeling, scuba diving, coral
DIVERSITY AND DNA BARCODING OF CORAL-ASSOCIATED FISHES OF SAINT MARTIN'S ISLAND FOR EFFECTIVE CONSERVATION OF MARINE LIFE
No full textAbstract
Saint Marin's Island (SMI), is the only sedimentary continental island in
Bangladesh. We have conducted an ichthyological survey to assess the reefassociated
fish species on this island. In this survey, we have identified and
recorded 141 species of reef-associated fishes of 56 Families under 20 Orders.
Among them, 37 species of reef fishes were recorded for the first time in
Bangladesh and one is discovered as a new species to the science during the
current study. In this study, we also obtained 221 DNA sequences from 100
species of which 179 sequences (96 species) were obtained from the COI gene
and 42 sequences (26 species) obtained from the 16S rRNA gene region. The COI
sequences of those 96 species comprised 145 haplotypes with 337 polymorphic
sites. The mean genetic distances within species, genera, and families were
0.34%,12.26%, and 19.03%, respectively. In the case of 16S rRNA sequences, 42
sequences of 26 fish species comprised 31 haplotypes containing 241
polymorphic sites. The mean genetic divergence within species, genera and
families was 0.94%, 4.72% and 12.43%, respectively. This study is a significant
contribution to the fisheries statistics of this ecologically critical area (ECA) and
Marine Protected Area (MPA) of Bangladesh as well as the nOithem Bay of
Bengal which would facilitate the assessment of species catch composition and
hence for strategizing management plans. It is also an important input to the DNA
barcode library of reef fishes of the northem Bay of Bengal and to the marine
fishes of Bangladesh as well as global DNA barcode entries in general.
Keywords: ichthyological survey, Saint Martin's island, mitochondrial DN
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