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FIGURE 13 in A revision of the genus Pachygrapsus Randall, 1840 (Crustacea: Decapoda: Brachyura, Grapsidae), with special reference to the Southwest Pacific species
No full textFIGURE 13. —Pachygrapsus transversus (Gibbes, 1850). Male 17 x 22.5 mm, French Guiana (MNHN B16013): a) dorsal view; b) front; c) left chela outer face, d) right P5, e) male abdomen.Published as part of Poupin, Joseph, Davie, Peter J. F. & Cexus, Jean-Christophe, 2005, A revision of the genus Pachygrapsus Randall, 1840 (Crustacea: Decapoda: Brachyura, Grapsidae), with special reference to the Southwest Pacific species, pp. 1-66 in Zootaxa 1015 (1) on page 46, DOI: 10.11646/zootaxa.1015.1.1, http://zenodo.org/record/504923
Pachygrapsus corrugatus
No full textPachygrapsus corrugatus (von Martens, 1872) (Figures 1a–d, 14f, 15f) Grapsus (Leptograpsus) corrugatus von Martens, 1872: 107, pl. 4, fig. 8, 8b [type locality: Cuba]. Pachygrapsus corrugatus — Kingsley, 1880: 200 (key). — Rathbun, 1918: 252, pl. 160, fig. 4 (Cuba); 1933: 89 (Puerto Rico). — Chace & Hobbs, 1969: 167 (Virgin Is.). — Manning, 1963: 159–160 (Bahamas). — Holthuis et al., 1980: 46 (St Paul's Rocks). — Manning & Chace, 1990: 66, fig. 43 (Ascension I.). — Melo, 1996: 452, fig. 1 (Brazil); 1998: 499 (Brazil). Type material Three females and one male in alcohol with the label " Leptograpsus corrugatus, collector Gundlach, Cuba " (ZMB 3702). These are not indicated as types but many types in this collection are not marked as such (C. O. Coleman, pers. comm.). The smallest specimen (ZMB 3702) is a male approximately 12 x 14 mm, probably the specimen that is described in von Martens (1872: 107). It is herein designated as lectotype and the remaining three females are the paralectotypes. Material Examined West Atlantic. Virgin Is.: St. Croix, on coastal rocks Judith Fancy Bay, coll. H. A. Beatty, 1935–1936, 1 ov. F. 13.6 x 15.2 mm (USNM 72340). Bahamas, Treasure I., Salt Cay, ChaplinBahama collection, stn 247, south shore of western tip, coll. J. C. Briggs et al., 14 August 1955, 1 M 15.4 x 17.3 mm (USNM 122786). South Central Atlantic. Ascension I.: south of Collyer Point, intertidal rocky flat around blowhole adjacent to Cable and Wireless Beach, hand and poison, coll. R. B. Manning, 25 May 1971, 1 M 8.6 x 10.2 mm (USNM 252325). Diagnosis Very similar to Pachygrapsus fakaravensis (see diagnosis and remarks for that species). The two species differ by the striation of the abdomen, which is less pronounced in P. corrugatus than in P. fakaravensis. Measurements: medium size; carapace of specimens examined ranging from 8.6 x 10.2 to 15.4 x 17.3 mm. For Ascension I., Manning & Chace (1990: 66) indicated a smaller cl, ranging from 3.2 to 8.5 mm. Distribution West and south central Atlantic: Brazil, Bahamas, Cuba, Puerto Rico, the Virgin Is., St. Paul's Rocks, Ascension I. Habitat Intertidal rock pools often around algae.Published as part of Poupin, Joseph, Davie, Peter J. F. & Cexus, Jean-Christophe, 2005, A revision of the genus Pachygrapsus Randall, 1840 (Crustacea: Decapoda: Brachyura, Grapsidae), with special reference to the Southwest Pacific species, pp. 1-66 in Zootaxa 1015 (1) on pages 8-9, DOI: 10.11646/zootaxa.1015.1.1, http://zenodo.org/record/504923
Space-Based Displacement Monitoring of Coastal Urban Areas: The Case of Limassol’s Coastal Front
Full text linkIn the last five years, the urban development of the city of Limassol has rapidly increased in the sectors of industry, trade, real estate, and many others. This exponentially increased urban development arises several concerns about the aggravation of potential land subsidence in the Limassol coastal front. Forty six Copernicus Sentinel-1 acquisitions from 2017 to 2021 have been processed and analyzed using the Sentinel Application Platform (SNAP) and the Stanford Method for Persistent Scatterers (StaMPS). A case study for the identification and analysis of the persistent scatterers (PS) in pixels in a series of interferograms and the quantity of the land displacements in the line of sight of the Limassol coastal front is presented in this research, with subsidence rates up to about (−5 to 4 mm/year). For the validation of the detected deformation, accurate ground-based geodetic measurements along the coastal area were used. Concordantly, considering that there is a significant number of skyscrapers planned or currently under construction, this study attempts a preliminary assessment of the impact these structures will pose on the coastal front of the area of Limasso
Analyse des signaux non-stationnaires par transformation de Huang, Opérateur deTeager-Kaiser, et Transformation de Huang-Teager (THT)
No full textThe objective rests on the treatment and analyzes nonstationary signals, multi-components. For the treatment (filtering and denoising), we propose new tools based on the Huang-Transform (or empirical modal Decomposition: EMD). On the basis of the Teager-Kaiser Energy Operator, we propose a new operator of measurement of interaction between two complex signals. We establish the theoretical properties with the time-frequency distributions of the class of Cohen. We show that it is a measurement of similarity and that it is adapted to the detection of signals. For the analysis, we introduce a new method time-frequency based on the joint use of the EMD and the Teager-Kaiser operator: the Huang-Teager Transform (THT). To illustrate these concepts, of the results of filtering, denoising, detection, analysis time-frequency of signals are presented. We finish by the analysis and classification of the echoes of targets sonars by THT.L'objectif repose sur le traitement et l'analyse des signaux non-stationnaires, multi-composantes. Pour le traitement (filtrage et débruitage), nous proposons de nouveaux outils fondés sur la Transformation de Huang (ou Décomposition modale empirique : EMD). Partant de l'opérateur de Teager-Kaiser, nous proposons un nouvel opérateur de mesure d'interaction entre deux signaux complexes. Nous établissons les liens théoriques avec les représentations temps-fréquence de la classe de Cohen. Nous montrons que c'est une mesure de similarité et qu'il est adapté à la détection de signaux. Pour l'analyse, nous introduisons une nouvelle méthode temps-fréquence basée sur l'utilisation conjointe de l'EMD et de l'opérateur de Teager-Kaiser : la Transformation de Huang-Teager (THT). Pour illustrer ces concepts, des résultats de filtrage, de débruitage, de détection, d'analyse temps-fréquence de signaux sont présentés. Nous terminons par l'analyse et classification des échos de cibles sonars par THT
Pachygrapsus crassipes Randall 1840
No full textPachygrapsus crassipes Randall, 1840 (Figures 2a–e, 14g, 15g, 16) Pachygrapsus crassipes Randall, 1840: 127 [type locality: Hawaiian Is. but according to Rathbun (1918) and Edmonson (1959) this locality must be erroneous]. — Stimpson, 1858: 48 [102] (California, Japan); 1907: 116 (Japan). — Ortmann, 1894: 708 (California; Japan). — Rathbun, 1918: 241 (California; Galápagos Is., Japan, Korea; but not Chile, see distribution). — Tesch, 1918: 76 (Key). — Garth, 1957: 103 (invalid record in Chile; see distribution). —Edmonson, 1959: 168 (California). — Sakai, 1976: 634, pl. 218, fig. 1 (Japan, Korea; references). — Dai & Yang, 1991: 511 (China sea, Guangdong, Fujian, and Zhejiang). — Hendrickx, 1995: 140 (east Pacific from Oregon to Gulf of California and Rocas Alijos; references). — Cuesta & Schubart, 1998: 1501 (California). — Ng et al., 2001: 40 (Taiwan; references). Grapsus eydouxi H. Milne Edwards, 1853: 170 [136] (Chile; probably an erroneous locality, see distribution). Leptograpsus gonagrus H. Milne Edwards, 1853: 173 [139] (type locality unknown). Type material Male preserved in alcohol (ANSP CA 901) (P. Callomon, pers. comm.). Material Examined East Pacific. California: Pacific Grove, 1 M 27.0 x 30.8 mm (MNHN B12892); coll. J. E. Benedict, June 1905, 3 M 26.5 x 29.8–37.2 x 42.9 mm, 4 ov. F 27.3 x 30.1–31.9 x 36.8 mm, 2 F 25.6 x 28.4, 34.0 x 39.6 mm, plus numerous other specimens not examined (USNM 32234). West Pacifi c. Japan: Enoshima, Sagami Bay, coll. M. Takeda, 15 August 1980, 1 M 31.9 x 36.6 mm (NSMT Cr7516). — Sotobo, Chiba Prefecture, coll. T. Habe, 25 March 1975, 2 M 16.8 x 18.9, 24.9 x 29.3 mm (NSMT Cr 6822). Diagnosis Carapace with dorsal surface weakly convex, striated on gastric, hepatic, branchial regions; striae without setae. Cardiac, intestinal regions smooth or only with faint striae. Lateral margins convergent posteriorly, with single tooth behind exorbital angle (Fig. 2a). Front 0.6 times exorbital width, anterior margin slightly sinuous with 2 lobules distally (Fig. 2b). Infraorbital margin weakly dentate on inner half, deeply dentate on outer half; outer notch deep (Fig. 14g). Outer face of chelae smooth with faint longitudinal line near lower margin, becoming clearly noticeable only on outer face of fixed finger; upper margin slightly carinated; tip of fingers spoonlike, glabrous (Fig. 2c). Ambulatory legs almost totally glabrous; carpi, propodi with several short mobile spines; dactyli with longitudal rows of long mobile spines, ending with strong, corneous claw. Lower margin of P5 merus smooth with rounded distal angle (Fig. 2d). Abdominal tergites smooth; sixth somite of abdomen plus telson triangular in male (Fig. 2e). G1 bluntly truncated with small hornlike process distally (Fig. 15g). Colour: very variable on photographs examined. Carapace green to almost totally black. Chelipeds light pink to purple or black, with a marbled pattern on the chelae. Ambulatory legs light green or purple to almost totally black. Measurements: large size; carapace of specimens examined ranging from 26.5 x 29.8 mm to 37.2 x 42.9 mm. Distribution East Pacific. Oregon and California, Mexico, Galápagos. West Pacific. China, Japan, Korea, Taiwan. The type locality given by Randall (1840), the Hawaiian Is., is certainly erroneous as this largesize and common species has never again been recorded from the islands. The type specimen was most probably collected on the California coast. Pachygrapsus crassipes was also listed as occurring in Chile by Rathbun (1918: 241) based on the fact that this is the type locality given for Grapsus eydouxi H. Milne Edwards (1853: 170). The type of G. eydouxi has not been found at the MNHN. Garth (1957: 105) considered the type locality of Chile for G. eydouxi to be erroneous, and thus he did not include P. crassipes as part of the Chilean fauna. Habitat Intertidal on rocky shores. Remarks Pachygrapsus crassipes, together with P. gracilis, P. laevimanus, P. loveridgei, P. maurus, and P. transversus, belongs to the group of species with only one tooth behind the exorbital angle. It clearly differs from these species by the shape of its G1 (Fig. 15). Of this group it is morphologically close to P. transversus, another largesize species. The two can be separated by the presence of striae on the cardiac and intestinal regions of the carapace being marked only in P. transversus (Fig. 2a, 13a); the longitudinal stria on the outer face of the chela is unclear in P. crassipes, but deep in P. transversus (Fig. 2c, 13c); the ventrodistal angle of the P5 merus is rounded in P. crassipes, but it has spines in P. transversus (Fig. 2d, 13d); and the male abdomen is regularly triangular at its tip only in P. crassipes (Fig. 2e, 13e). Pachygrapsus crassipes is common on the Pacific coasts of North and South America from Oregon to Mexico and the Galápagos Is. Stimpson (1907: 116) was the first to record it from the west Pacific, indicating that he was "unable to find a distinguishing character, however minute, between the specimens from Japan and those from California". Pachygrapsus crassipes was reported several times thereafter from the west Pacific, including Korea (Rathbun, 1918), Japan (Sakai, 1976), China (Dai & Yang, 1911), and Taiwan (Ng et al., 2001). This amphiPacific distribution is rather unusual, the fauna of the east and west Pacific normally being distinct. The G1 of Asian P. crassipes appears to have never been figured or compared with the American P. crassipes. The examination of the G1 of Japanese specimens (NSMT Cr7516, Cr 6822) shows them to be very similar to the American P. crassipes. Despite this, preliminary DNA analyses by C. Schubart (pers. comm.) indicate genetic differences between the Asian and American populations and, if these are confirmed by additional data (morphology, larval development, colour pattern), the two could be considered separate species.Published as part of Poupin, Joseph, Davie, Peter J. F. & Cexus, Jean-Christophe, 2005, A revision of the genus Pachygrapsus Randall, 1840 (Crustacea: Decapoda: Brachyura, Grapsidae), with special reference to the Southwest Pacific species, pp. 1-66 in Zootaxa 1015 (1) on pages 9-12, DOI: 10.11646/zootaxa.1015.1.1, http://zenodo.org/record/504923
Pachygrapsus loveridgei Chace 1966
No full text<i>Pachygrapsus loveridgei</i> Chace, 1966 (Figures 6a–e, 14i, 15i) <p> <i>Pachygrapsus loveridgei</i> Chace, 1966: 640, fig. 9–10 [type locality: St. Helena I.]. — Manning & Chace, 1990: 66 (Ascension I.).</p> <p> <i>Pachygrapsus transversus</i> — Miers, 1881: 432 (Ascension I.) [Not <i>Pachygrapsus transversus</i> (Gibbes, 1850)].</p> <p> <i>Type material</i> Male holotype 10.3 x 13.1 mm (USNM 112457) and 6 paratypes (USNM 112467).</p> <p> <i>Material Examined</i></p> <p> <b>Central Atlantic.</b> <b>St. Helena I.</b>: Rupert’s Bay, on buoy cable, coll. A. Loveridge, 18 March 1960, 1 M 10.3 x 13.1 mm (Holotype USNM 112457); 11 February 1963, 3 M 5.5 x 6.8–7.7 x 9.5 mm, 1 F 6.2 x 7.9 mm, 2 ov. F. 5.0 x 6.7, 7.2 x 8.6 mm (Paratype USNM 112467); 1 M 8.1 x 10.0 mm (MNHN B17836).</p> <p> <i>Diagnosis</i></p> <p>Carapace dorsal surface markedly convex; with glabrous striae on protogastric, hepatic, branchial region; mesogastric, cardiac, intestinal region smooth or with only few short striae (Fig. 6a). Lateral margins convergent posteriorly, with only one tooth behind exorbital angle. Anterior margin of front sinuous, 0.5 times exorbital width (Fig. 6b). Infraorbital margin minutely denticulate, with shallow outer notch (Fig. 14i).</p> <p>Outer face of chelae regularly convex, smooth except for conspicuous longitudinal line near lower margin, running nearly entire length of palm to tip of fixed finger (Fig. 6c). Cutting edges of fingers narrowly gaping, with several triangular teeth. Tip of fingers corneous, spoon­like, glabrous.</p> <p>Ambulatory legs with several scattered long bristles. P2 propodi with plumose setae on anterodorsal surface, forming light brush of setae. Lower margin of P5 with 1–3 submedian tubercles; distoventral angle with 2–3 spines (Fig. 6d).</p> <p>Abdominal tergites smooth; sixth somite of male broadly subrectangular, not triangular with telson (Fig. 6e). Distal process of G1 stout, sickle­like tip (Fig. 15i).</p> <p>Colour: Live coloration unknown. Chace (1966: 643) indicated the colour of freshly preserved specimens as “the carapace is mottled grayish brown with all transverse striae dark brown; chelipeds dark reddish brown dorsally, fading to light tan on outer surface of palm and to nearly white near tip of fingers; ambulatory legs mottled with brown, gray, and tan, proximal and distal ends of propodus and proximal end of dactyl nearly white, giving banded appearance to legs.”</p> <p>Measurements. Medium size; carapace of specimens examined ranging from 5.0 x 6.7–10.3 x 13.1 mm. Chace (1966) and Manning & Chace (1990) indicated that cl varies between 1.9–12.4 mm, with 3.2 mm for the smallest ovigerous females.</p> <p> <i>Distribution</i> <b>Central Atlantic</b>: Ascension and St. Helena islands.</p> <p> <i>Habitat</i></p> <p>Intertidal, but also on buoys, associated with barnacles, from near the surface to 7 meters.</p> <p> <i>Remarks</i></p> <p> <i>Pachygrapsus loveridgei</i> is morphologically close to <i>P. transversus</i> (Gibbes, 1850). Both species have only one tooth on the lateral margins of the carapace behind exorbital angle, a conspicuous line on the outer face of the chelae near the lower margin, a brush of setae on the P2 propodi, and a male abdomen that is not apically triangular. <i>P. loveridgei</i> is smaller in size, the carapace is more convex, and the chitinous terminal portion of the G1 is broadly sickle shaped, rather than obliquely T­shaped as in <i>P. transversus</i> (Fig. 15i, l).</p> <p> Chace (1966: 644) indicated that 85 of the 211 specimens examined from St. Helena I. were found living near the surface on a buoy. This sporadic semi­pelagic way of life, along with its small size and markedly convex carapace, suggest affinities with species of <i>Planes</i> Bowdich, especially <i>Planes marinus</i> Rathbun, 1911, a species at one time included <i>Pachygrapsus</i> (see Chace, 1951).</p>Published as part of <i>Poupin, Joseph, Davie, Peter J. F. & Cexus, Jean-Christophe, 2005, A revision of the genus Pachygrapsus Randall, 1840 (Crustacea: Decapoda: Brachyura, Grapsidae), with special reference to the Southwest Pacific species, pp. 1-66 in Zootaxa 1015 (1)</i> on pages 23-25, DOI: 10.11646/zootaxa.1015.1.1, <a href="http://zenodo.org/record/5049232">http://zenodo.org/record/5049232</a>
Analyse des signaux non-stationnaires par transformation de Huang, Opérateur deTeager-Kaiser, et Transformation de Huang-Teager (THT)
No full textThe objective rests on the treatment and analyzes nonstationary signals, multi-components. For the treatment (filtering and denoising), we propose new tools based on the Huang-Transform (or empirical modal Decomposition: EMD). On the basis of the Teager-Kaiser Energy Operator, we propose a new operator of measurement of interaction between two complex signals. We establish the theoretical properties with the time-frequency distributions of the class of Cohen. We show that it is a measurement of similarity and that it is adapted to the detection of signals. For the analysis, we introduce a new method time-frequency based on the joint use of the EMD and the Teager-Kaiser operator: the Huang-Teager Transform (THT). To illustrate these concepts, of the results of filtering, denoising, detection, analysis time-frequency of signals are presented. We finish by the analysis and classification of the echoes of targets sonars by THT.L'objectif repose sur le traitement et l'analyse des signaux non-stationnaires, multi-composantes. Pour le traitement (filtrage et débruitage), nous proposons de nouveaux outils fondés sur la Transformation de Huang (ou Décomposition modale empirique : EMD). Partant de l'opérateur de Teager-Kaiser, nous proposons un nouvel opérateur de mesure d'interaction entre deux signaux complexes. Nous établissons les liens théoriques avec les représentations temps-fréquence de la classe de Cohen. Nous montrons que c'est une mesure de similarité et qu'il est adapté à la détection de signaux. Pour l'analyse, nous introduisons une nouvelle méthode temps-fréquence basée sur l'utilisation conjointe de l'EMD et de l'opérateur de Teager-Kaiser : la Transformation de Huang-Teager (THT). Pour illustrer ces concepts, des résultats de filtrage, de débruitage, de détection, d'analyse temps-fréquence de signaux sont présentés. Nous terminons par l'analyse et classification des échos de cibles sonars par THT
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
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