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Boring sponges from the Ha Long Bay (Tonkin Gulf, Vietnam)
No full textSponges of Vietnam are poorly known (Lévi 1961) particularly excavating sponges. In 1898, Lindgren recorded 20 species from Nha Trang (southern Vietnam), none of them excavating. The only paper entirely devoted to the sponge fauna of Vietnam was written by Lévi (1961), who recorded 28 species from Nha Trang, but included no excavating sponges. Excavating sponges from Vietnam were reported by Dawydoff (1952) in a paper on the Indo-Chinese marine benthic fauna, but the most complete reference regarding the area is a checklist of sponges recorded from the South China Sea by (Hooper et al. 2000). During 4 surveys performed from 2002 to 2004, 9 species of boring sponges were recorded from Ha Long Bay, on the northern coast of Vietnam: Cliona aurivilli (Lindgren 1897), C. celata Grant, 1826, C. orientalis Thiele, 1900, Cliothosa hancocki (Topsent 1888), Pione carpenteri (Hancock 1826), Spirastrella decumbens Ridley, 1884, S. solida Ridley and Dendy, 1886, S. tentorioides Dendy, 1905, and Aka mucosa (Bergquist 1965). Cliona orientalis, P. carpenteri, S. decumbens, S. tentorioides Dendy 1905, and A. mucosa are new records from the Tonkin Gulf, whereas all the other species are already known from Vietnam. The aim of this paper was to make an initial contribution to the knowledge of the Vietnamese excavating sponges in the Tonkin Gulf, northern Vietnam
sj-docx-1-npx-10.1177_1934578X221088061 - Supplemental material for Halipanasterol, a New Sterol Isolated From the Marine Sponge <i>Halichondria panicea</i>
No full textSupplemental material, sj-docx-1-npx-10.1177_1934578X221088061 for Halipanasterol, a New Sterol Isolated From the Marine Sponge Halichondria panicea by Phan Van Kiem, Do Thi Trang, Bui Huu Tai, Nguyen Xuan Nhiem, Dan Thi Thuy Hang, Do Cong Thung, Do Thi Thao, Pham Hai Yen and Phan Thi Thanh Huong in Natural Product Communications</p
EVALUATION OF ENVIRONMENTAL POLLUTION LEVEL AND DECLINE OF BIODIVERSITY IN TIDAL ECOSYSTEMS IN THE NORTHERN VIETNAM
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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
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
The Ha Long Bay Marine Ecosystem. An Unprecedented Opportunity for Evolutionary Studies on Marine Taxa
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