1,720,965 research outputs found
A new species of the genus Hippolyte (Decapoda: Caridea: Hippolytidae) from Singapore
No full textGan, Zhibin, Li, Xinzheng (2017): A new species of the genus Hippolyte (Decapoda: Caridea: Hippolytidae) from Singapore. Raffles Bulletin of Zoology 65: 207-212, DOI: 10.5281/zenodo.450281
Lysmata leptodactylus, a new species of lysmatid shrimp (Crustacea: Decapoda: Caridea) from China
No full textGan, Zhibin, Li, Xinzheng (2016): Lysmata leptodactylus, a new species of lysmatid shrimp (Crustacea: Decapoda: Caridea) from China. Zootaxa 4138 (1): 181-188, DOI: http://doi.org/10.11646/zootaxa.4138.1.
Fig. 1 in Gibbosaverruca weijiai, a new verrucid (Crustacea, Thoracica) species from the Weijia Guyot deep-sea seamount in the West Pacific
No full textFig. 1. Gibbosaverruca weijiai sp. nov., holotype, SRSIO17090313. A. Opercular plates. B. Fixed tergum and scutum. C. From above. D. Fixed tergum. E. Fixed scutum. F. Movable tergum. G. Movable scutum.Published as part of Gan, Zhibin, Zhang, Dongsheng & Wang, Chunsheng, 2021, Gibbosaverruca weijiai, a new verrucid (Crustacea, Thoracica) species from the Weijia Guyot deep-sea seamount in the West Pacific, pp. 158-167 in European Journal of Taxonomy 739 (1) on page 160, DOI: 10.5852/ejt.2021.739.1273, http://zenodo.org/record/462068
Fig. 3 in Gibbosaverruca weijiai, a new verrucid (Crustacea, Thoracica) species from the Weijia Guyot deep-sea seamount in the West Pacific
No full textFig. 3. Gibbosaverruca weijiai sp. nov., holotype, SRSIO17090313. A. Soft body. B. Cirrus I. C. Cirrus II. D. Cirrus III. E. Cirrus IV. F. Cirrus V. G. Cirrus VI. H. Penis. I. Eggs.Published as part of Gan, Zhibin, Zhang, Dongsheng & Wang, Chunsheng, 2021, Gibbosaverruca weijiai, a new verrucid (Crustacea, Thoracica) species from the Weijia Guyot deep-sea seamount in the West Pacific, pp. 158-167 in European Journal of Taxonomy 739 (1) on page 162, DOI: 10.5852/ejt.2021.739.1273, http://zenodo.org/record/462068
Fig. 4. Hippolyte singaporensis spec. nov. Ovigerous female holotype, ZRC1979.4.28.132 in A new species of the genus Hippolyte (Decapoda: Caridea: Hippolytidae) from Singapore
No full textFig. 4. Hippolyte singaporensis spec. nov. Ovigerous female holotype, ZRC1979.4.28.132 (AE). Male paratype, ZRC1979.4.28.133 (F, G). A, right first pereiopod, lateral; B, tip of the right first pereiopod, mesial (setae not shown); C, right second pereiopod, lateral; D, tip of the right second pereiopod, mesial (setae not shown); E, left third pereiopod, lateral; F, left fourth pereiopod, lateral; G, left fifth pereiopod, lateral; H, propodus and dactylus of left third pereiopod, lateral; I, endopod of right second pleopod, lateral. Scales: A, C, E–I, 1 mm; B, D, 5 mm.Published as part of Gan, Zhibin & Li, Xinzheng, 2017, A new species of the genus Hippolyte (Decapoda: Caridea: Hippolytidae) from Singapore, pp. 207-212 in Raffles Bulletin of Zoology 65 on page 210, DOI: 10.5281/zenodo.450281
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
Hippolyte singaporensis Gan & Li 2017, spec. nov.
No full textHippolyte singaporensis spec. nov. (Figs. 1–4) Material examined. Holotype: 1 ovigerous female, 0.9 mm CL, ZRC 1979.4.28.132, Singapore, Coll. R. u. G., 28 March 1967. Paratypes: 2 ovigerous females, 0.8–1.0 mm CL, 2 female, 0.7–0.9 mm CL, ZRC 1979.4.28.133–136, Singapore, Coll. R. u. G., 28 March 1967; 1 ovigerous female, 1.1 mm CL, ZRC 1979.4.28.129, Changi, Singapore, Coll. Lim Bee Cheng, 27 March 1967; 3 ovigerous females, 0.7–0.9 mm CL, 1 female, 0.7 mm CL, 1 male, 0.6 mm CL, ZRC 1979.4.28.122–126, Changi, Singapore, Coll. D. S. Johnson, 26 August 1957; 2 males, 0.6–0.7 mm CL, ZRC 1979.4.28.137–138, Singapore, Coll. Lim Bee Cheng, 18 May 1967; 15 ovigerous females, 0.7–1.0 mm CL, 7 females, 0.6–0.8 mm CL, 5 males, 0.5–0.7 mm CL, ZRC 1979.4.28.189–215, Tg. Teritip, Singapore, Coll. Lim Bee Cheng, 29 March 1967; 8 ovigerous females, 0.7–1.0 mm CL, 14 females, 0.6–0.9 mm CL, 4 males, 0.5–0.7 mm CL, ZRC 1979.4.28.80–105, Singapore, Coll. Lim Bee Cheng, 28 April 1967. Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao 266071, China; University of Chinese Academy of Sciences, Beijing 100049, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, 1 Wenhai Road, Qingdao 266200, China; Email: [email protected] (* corresponding author) Description. Very small-sized shrimp (0.5–1.1 mm CL in present material) with normal body form (Fig. 1A). Ratio lateral length/height of carapace 1.2–1.6. Rostrum (Figs. 1B, 2A) slender, 7.3–7.6 times as long as high, straight, slightly shorter or longer than carapace length, distinctly falling short of antennular peduncle apex. Rostrum without lateral carina, without dorsal tooth, with only one ventral tooth in distal position. Carapace smooth and glabrous, with robust supraorbital spine, antennal spine and hepatic spine (Figs. 1A, 2A). Base of supraorbital spine posterior to posterior orbital margin. Tip of antennal spine slightly overreaching inferior orbital angle. Base of hepatic spine nearly situating at anterior edge of carapace. Inferior orbital angle strongly produced; pterygostomian region rounded, not produced (Figs. 1A, 2A). © National University of Singapore ISSN 2345-7600 (electronic) | ISSN 0217-2445 (print) Abdominal segments smooth (Fig. 1A). Third abdominal segment geniculately curved. Ratio dorsal length/height of the sixth abdominal segment 1.5–1.7. Telson (Fig. 2B) distinctly longer than sixth abdominal segment; posterior margin rounded, armed with eight strong spines, outer spines smallest, medial two longest, without intermediate spinules. Dorsal surface armed with two pairs of spines situated on distal 0.2 and 0.4 telson length. Eye (Figs. 1A, 1B) well developed; unpigmented part of eyestalk slightly longer than broad; cornea semispherical, reaching stylocerite apex when extended forward; cornea shorter than unpigmented part of eyestalk. Antennular peduncle (Figs. 1B, 2C) reaching proximal 0.8–0.9 length of scaphocerite. First segment of antennular peduncle with only one distolateral tooth, distinctly longer than second and third segments combined; inner ventral tooth on middle-length of first segment (excluding distolateral tooth); stylocerite reaching 0.6 (distolateral tooth included), or 0.7 (distolateral tooth excluded) of first segment. Second segment of antennular peduncle 1.5 times as long as broad in dorsal view, approximately 1.2 times as long as third segment in dorsal view. Outer antennular flagellum shorter and thicker than inner. Scaphocerite (Fig. 2D) 2.6–2.8 times as long as wide; distolateral spine of scaphocerite terminating well short of distal margin of blade; distolateral spine and blade separated by notch. Mouthparts typical for genus. Mandible (Fig. 3A) without palp, incisor process with three acute teeth, molar process without teeth. Maxillula (Fig. 3B) with simple curved palp, upper lacinia broad, distal margin armed with 13–15 spines and two plumose setae. Maxilla (Fig. 3C) with simple palp; lateral border of scaphognathite slightly convex; inner lacinia bilobed, distal margin furnished with row of spines; proximal endite well developed, with simple setae on distal margin. Epipod of first maxilliped (Fig. 3D) with outer margin continuous; palp slender, outer margin with long simple setae; exopod with well-developed flagellum, bearing long simple setae at apex; caridean lobe feebly developed; basal endite broad, mesial margin incised, outer margin setose. Second maxilliped (Fig. 3E) with epipod deeply bilobed; exopod well-developed, with long simple apical setae; endopod normal, dactylar segment short but broad, terminal margin furnished with spinous setae; propodal segment with anteromedial margin slightly produced, outer margin bearing simple setae; carpus smaller than merus; ischium and basis fused, outer margin furnished with long plumose setae. Third maxilliped (Fig. 3F) reaching about 0.5–0.6 of scaphocerite when extended forward; ultimate segment (excluding apical spine) 1.9–2.0 times as long as penultimate segment, distal 0.4 of ultimate segment with eight to nine strong spines; antepenultimate segment slightly shorter than ultimate segment and penultimate segment combined; exopod long, nearly reaching distal margin of antepenultimate segment. First pereiopod (Fig. 4A) moderately robust, slightly overreaching basicerite when extended forward. Basis and merus furnished with few long plumose setae. Cutting edges of fingers of chela not denticulate, but with tiny setula and long simple apical setae; tip of fixed finger with three tiny spines; tip of dactylus with four tiny spines (Fig. 4B). Second pereiopod (Fig. 4C) not reaching distolateral spine of scaphocerite when extended forward. Carpus with three subsegments, first segment longest, about 1.4–1.5 times as long as second segment, third segment slightly shorter than or subequal to first segment; first segment 2.7 times as long as wide; second segment 1.6 times as long as wide; third segment 2.1 times as long as wide. Cutting edges of fingers of chela not denticulate, tip of fixed finger and dactylus armed with three tiny spines (Fig. 4D). Third to fifth pereiopods long and robust. Third pereiopod (Fig. 4E) reaching beyond terminal blade of scaphocerite by dactylus when extended forward. Dactylus of third pereiopod with 8–11 spines; all spines in ventral or apical position (none in dorsal or subdorsal position); two large apical spines, ultimate one strongest and longest. Propodus 7.8 times as long as wide, armed with five to seven pairs of spines on ventral margin, the spines considerably increasing in size from proximal to distal pair. Carpus 3.5 times as long as wide, armed with one proximal lateral spine. Merus of third pereiopod 5.5 times as long as wide, armed with two lateral spines. Ratio length of third pereiopod dactylus with longest apical spine/length of propodus 0.5; ratio length of third pereiopod dactylus with longest apical spine/length of carpus 1.1; ratio length of dactylus without spines/breadth of dactylus without spines 3.3; ratio length of dactylus with longest spines/breadth of dactylus without spines 5.7; ratio length of longest spine of dactylus/breadth of dactylus without spines 2.7. Fourth and fifth pereiopods (Fig. 4F, G) similar in shape to third pereiopod, but slightly decreasing in size. Merus of fourth pereiopod armed with one lateral spine; merus of fifth pereiopod without lateral spine. Sexual dimorphism. Propodus and dactylus of third pereiopod of male specimens forming a prehensile apparatus (Fig. 4H). Appendix masculina with six apical setae, about half length of appendix interna (Fig. 4I). Colouration. Unknown. Habitat. All specimens were collected at low tide level. The holotype was captured among seagrass bed (Enhalus acoroides [Linnaeus f.] Royle, 1839); paratypes ZRC 1979.4.28.189–215 were captured among gulfweed (Sargassum sp.); paratypes ZRC 1979.4.28.137–138 were captured among Padina sp. Etymology. The new species is named after its type locality, Singapore. Distribution. Currently only known from the type locality, Singapore.Published as part of Gan, Zhibin & Li, Xinzheng, 2017, A new species of the genus Hippolyte (Decapoda: Caridea: Hippolytidae) from Singapore, pp. 207-212 in Raffles Bulletin of Zoology 65 on pages 207-211, DOI: 10.5281/zenodo.450281
- …
