105,358 research outputs found
Pseudanapis hoeferi Kropf, 1995, n. sp.
No full textPseudanapis hoeferi, n. sp. (Figs. 1-22) Types: Male holotype (type locality: Rio Tarumá Mirim, Igapó, a 20 km upstream from Manaus, Brazil, Amazonas), deposited in INPA (Instituto National de Pesquisas da Amazônia, Manaus, Brazil), 7 March 1988, pitfall trap, H. Höfer leg.Paratypes, leg. H. Höfer at type locality: 1♂, 1♀ (INPA),1♂ 1♀ (AMNH, American Museum of Natural History, New York), 7 March 1988, pitfall trap; 1♂ (INPA), 2 December 1987, pitfall trap; 6♂ 1♀ (INPA), 4 March 1988,pitfall trap; 7♂ (one opisthosoma missing), 3♀ (INPA), 11 March 1988, pitfall traps; 3♂ (INPA), 17 February 1988, pitfall trap; 1♂ (INPA), 3 December 1987, pitfall trap; 1♀ (SMNK, Staatliches Museum für Naturkunde, Karlsruhe, Germany), 6 December 1987, pitfall trap; 1♀ (SMNK), 17 February 1988,arboreal funnel trap; 1♂ 3♀ (SMNK), 18 February 1988, arboreal funnel traps. Additional material from the same collections is deposited in AMNH, not seen by the author. Derivatio nominis: The specific name refers to the collector of the new species, Dr Hubert Höfer. Diagnosis: Males of Pseudanapis hoeferi, n. sp. are separated from all other Pseudanapis species by the palpal femur, which bears a proximal ventral bump and a proximal apophysis with stridulatory ridges on the retrolateral surface. Females can be distinguished from P. parocula (Simon, 1899) and P. wilsoni Forster, 1959 by the long pedipalps, from P. parocula,P. aloha Forster, 1959, P. serica Brignoli, 1981 and P. schauenbergi Brignoli, 1981 by the simple globular spermathecae (female internal genitalia of P. wilsoni are insufficiently known) and from P. gertschi (Forster, 1958) and P. benoiti Platnick & Shadab, 1979 by the presence of straight copulatory ducts leading from the epigastric furrow to the spermathecae. The female of P. domingo is unknown. Male: Dimensions (n=4): Total length 1.0 (0.98-1.02); prosoma length 0.44 (0.42-0.44), width 0.39 (no varia¬ tion), height 0.43 (0.41-0.44); opisthosoma length 0.61 (0.60-0.61),width 0.57 (0.55-0.58), height 0.56 (0.55- 0.57). Colour (alcohol-preserved material): Prosoma orange, palps and chelicerae light orange, legs yellow to light orange with patellae pale yellow. Opisthosoma: ventral scutum orange, dorsal scutum and ring around spinnerets light orange, sclerotised spots orange, spinnerets pale yellow, soft areas white. Carapace (tergum): Ovoid (Fig. 1),slightly ascending behind PME, then almost horizontal and after middle strongly descending (Fig. 2). Covered with numerous depressions with single excentric pore at bottom and sclerotised rims; lateral band and area behind PME without depressions. Striking depression with number of pores and sclerotised pad on lateral border above gnathocoxae. Four or five short hairs in middle of dorsal area, a long hair behind PME (Fig. 1). Eyes: Position and shape slightly variable; AME lacking; posterior row recurved, seen from above; ALE largest, PLE almost as large as ALE, diameter of PME 2/3 of ALE; PME separated by less than half their diameter, and from PLE by a little more than PME diameter; laterals separated by very narrow area, ALE separated by almost two diams; two long hairs behind ALE, two shorter hairs next to PLE (Figs. 1-3). Clypeus: Concave below anterior eyes, then convex (Fig. 2); almost as high as eye region; with none or only a single hair and some depressions in variable numbers and positions (Fig. 3). Sternum: Covered with short hairs and depressions like carapace; separating coxae IV by more than their diameter (Fig. 4); fused with pleurae and posteriorly with carapace. Labium: Rounded, fused with sternum (Fig. 4). Chelicerae: Long, with short mesal anterior extension; anteriorly with two diagonal rows of long hairs and three plumose hairs at base of fang (Fig. 5); posteriorly with transverse swelling and few hairs; mesal side with two excavations; posterior margin with row of five plumose hairs and four teeth, three on a common base, the fourth standing separately on inner side (Fig. 6) and varying in width. Palp: Gnathocoxae much broader than long, with transverse serrula and plumose hairs on anterior side (Fig. 4); trochanter normal; femur with ventral proximal bump and two apophyses (Figs. 7, 8): proximal apophysis (Fig. 7, arrow) dorsally situated, more or less blunt tipped (variable) and with stridula¬ tory ridges on retrolateral surface (functional morphol¬ ogy of stridulatory organ will be described elsewhere); distal apophysis slender, curved backwards, originating prolaterally, protruding dorsally. Patella with distal, dorsal, sharp-pointed apophysis and small, tongue-like, retrolateral distal apophysis (Figs. 7, 8); tibia with prolateral, scale-like prolongation (Fig. 8); cymbium without peculiarities. Genital bulb: Rounded, subtegulum and tegulum fused; broad invagination starting on retrolateral side (Fig. 9), narrowing distally, and continuing as slit-like groove prolaterally (Figs. 7, 8); embolus originating ventro-proximally with broad base, bent distally at right-angle, tip sharp-pointed (Fig. 9); sperm duct with wide lumen proximally, showing one rotation counter-clockwise (right palp), then forming letter "S,,before entering embolus base (Fig. 10). Two haematodochae present, visible only in expanded bulb (Fig. 11): basal haematodocha large, subdistai haematodocha {sensu Kropf, 1993) situated at embolus base, causing erection of embolus. Legs (Figs. 13, 14): One strong bristle distally on each patella, two on tibiae; metatarsi shorter than tarsi; three tarsal claws. Trichobothria (large arrows in Figs. 13, 14): three on tibiae I—III, four on tibia IV, one on metatarsi I-III; most distal trichobothrium on tibia longest. On retrolateral side one blunt-tipped hair distally on metatarsi I and II and proximally on tarsi I and II, these hairs thicker than others (small arrows in Fig. 13). Tarsal organ situated proximally (I: 0.14; II: 0.16; III: 0.18; IV: 0.17). Femur IV with group of retrolateral knobs (small arrow in Fig. 14), number and position variable. Dimensions: I-IY-II-III: Figs. 1-12: Pseudanapis hoeferi, n. sp., male. 1 Prosoma, dorsal view; 2 Ditto, lateral view; 3 Carapace, anterior view; 4 Prosoma, ventral view, chelicerae omitted; 5 Right chelicera, anterior view; 6 Ditto, posterior view; 7 Right palp, retrolateral view (arrow: proximal femoral apophysis with stridulatory ridges); 8 Ditto, prolateral view; 9 Right palpal bulb, ventral view; 10 Course of sperm duct, ventral view; 11 Right palpal bulb, expanded, dorso-retrolateral view; 12 Opisthosoma, lateral view, hairs omitted. Scale lines = 0.1 mm (Figs. H), 0.05 mm (Figs. 5-11), 0.2 mm (Fig. 12). Opisthosoma (Fig. 12): Large scutum covering dorsal surface, covered with hairs; ventral scutum showing some hairs, surrounding petiolus, extending posteriorly to epigastric furrow, with two striking darker spots behind insertion of petiolus, and lateral row of darker spots on each side; these spots bear indistinct depres¬ sions; sclerotised ring surrounding three pairs of spin¬ nerets and anal tubercle; anterior spinnerets largest, median spinnerets smallest; colulus missing; lateral side of opisthosoma with three rows of sclerotised spots, area behind dorsal scutum with two rows, some spots on ventral side behind epigastric furrow, number of spots variable; hairs on soft parts originating from small sclerotised plates; book-lungs replaced by tracheae, posterior tracheal spiracle missing. Female: Only differences from male are described. Dimensions (n=4): Total length 1.03 (1.0-1.06); prosoma length 0.44 (no variation), width 0.39 (no variation), height 0.42 (0.41-0.43); opisthosoma length 0.64 (0.62- 0.65),width 0.59 (0.57-0.60), height 0.55 (0.55-0.56). Colour (alcohol-preserved material): Similar to male, but most individuals paler; palp pale yellow; opisthosoma without dorsal scutum and thus lighter; vulva orange. Carapace (tergum): Lateral border more impressed anteriorly, looking more slender than in males but with no significant difference in width (Fig. 15). Dorsal line ascending more steeply up to middle (Fig. 16). Eyes: Posterior row only slightly recurved in dorsal view (Fig. 15); ALE closer together, separated by only their diam¬ eter (Fig. 17); PME separated from PLE by less than PME diameter. Clypeus: Less high than in males, with several hairs (Figs. 16,17); vaulted forwards, lateral areas forming “cheeks” (Fig. 17). Palp: Very thin, trochanter-femur and tibia-tarsus joints fused, distin¬ guished only by transverse grooves, claws absent (Fig. 16). Legs: Position of tarsal organ 0.15 on tarsi I and II, 0.16 on tarsi III and IV. Legs shorter than in males. Dimensions: I = IV, II, III. Opisthosoma: Dorsal scutum lacking so that full pattern of sclerotised spots visible (Figs. 18-20); fourth dorso¬ lateral row, transverse posterior row dorsally and two anterior spots, other spots as in males; ventral scutum Figs. 13-14: Pseudanapis hoeferi, n. sp., male. 13 Leg I, retrolateral view (large arrows: trichobothria; small arrows: blunt-tipped hairs); 14 Leg IV, retrolateral view (large arrows: trichobothria; small arrow: knobs on femur). Scale line = 0.2 mm. (Fig. 21) extended less far anteriorly; with fewer hairs in anterior region. Epigyne (Fig. 21): Indistinct, external openings two narrow, curved slits (arrows in Fig. 21); vulva shining through. Vulva (Fig. 22): Heavily sclero¬ tised; copulatory ducts running straight forwards to globular spermathecae; fertilisation ducts connected to copulatory ducts by fine slits anteriorly, hardly visible (Kropf, 1990), branching off posteriorly, then turning medially, sometimes laterally (variation), before entering uterus. Distribution: Known only from the type locality. Ecology: Inhabiting the litter layer; before inundation, the species migrates to the trunk and canopy region (Höfer, 1990). Discussion The second South American species, P. domingo, is most similar to P. hoeferi. The male palpi of the two species seem to be almost identical, apart from the presence of stridulatory ridges on the proximal femoral apophysis and a proximal ventral bump in P. hoeferi, apparently lacking in P. domingo (see Platnick & Shadab, 1979: fig. 53). The third American species, P.gertschi from Mexico, Costa Rica and Panama has a different male palpus but similar female genitalia. This species can be distin¬ guished from P. hoeferi by the S-shaped, slender copulatory ducts (see Platnick & Shadab, 1979: fig. 59). The presence of a proximal apophysis on the male palpal femur unites the American species of Pseudana¬ pis. In all other species of this genus the two femoral apophyses are situated in the distal half of the femur. As the apomorphic status of this character remains doubtful, there is little morphological evidence for the monophyly of American Pseudanapis species at present. In Pseudanapis and in the genus Comaroma Bertkau, 1889 there are prosomal depressions with a single pore at the bottom (see Kropf, 1990: fig. 11). The study of this character in other anapid genera will probably provide useful phylogenetic information.Published as part of Kropf, C., 1995, Pseudanapis hoeferi, n. sp. from Central Amazonia, Brazil (Araneae, Anapidae)., pp. 19-22 in Bull. Br. arachnol. Soc. 10 on pages 19-2
MF2313
No full textDonald Kropf & Curtis Kastner, Color and oxidative properties of irradiated beef, Kansas State University, January 1998
Application layer scalable video coding for the iphone
No full textVideos streamed over the Internet can be received by mobile devices anywhere and anytime. The challenges for Internet streaming include avoiding data loss and playing back the content in the desired quality. A technique for achieving these goals is Scalable Video Coding (H.264-SVC) that adapts the content to network and device characteristics without transcoding. Since there is no player for rendering scalable video content on mobile phones using more than the base layer, we present our prototype implementation that is able to decode multiple layers of scalable content in the temporal, spatial or quality domain. Currently the prototype is available and has been tested on the iPhone 3G
Dalí Museum, second anniversary, John H., Gary C., R.Rigo, Joan Kropf at table, Joan cutting butterfly cake, punch bowl and pitcher nearly empty, melting clock cake remnants, Ecumenical Council, Discovery of America by Christopher Columbus, Hallucenogenic Toreador & wall showcase
No full text3x3color photo, second anniversary, table white tablecloths, Joan Kroph cutting butterfly cake punch bowl and pitcher with small amounts of punch left, remnants of melting clock chocolate cake, John H. and R. Rigo enjoying cake, Gary C. standing by table, Ecumenical Council behind Joan Kropf, Discovery of America by Chrisopher Columbus behind Gary C. and facing John H., Hallucenogenic Toreador to Joan's lef
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
Gamasomorpha ophiria Eichenberger & Kranz-Baltensperger & Ott & Graber & Nentwig & Kropf 2012, n. sp.
No full textGamasomorpha ophiria Eichenberger n. sp. (Figs. 15–16) Type material: Holotype male (PBI_OON 00012010): West-Malaysia: Johor: Gunung Ledang (= Mount Ophir), Puteri Waterfalls, 2°21'22.2"N / 102°37'48.8"E, 80-130 m, rain forest near stream, 21 – 22 May 2004, leg. P. Schwendinger (MHNG). Female paratype (PBI_OON 00016053), collected with male holotype (MHNG). Male paratype (PBI_OON 00016052), collected with male holotype (NMBE). Etymolog y: The species epithet, an adjective, is composed of the name of the Mount Ophir in West-Malaysia which is the type location of this species. Diagnosis: Resembles G. insomnia n. sp. but booklung covers small, ovoid, elevated from body surface (figs. 15. I–J), carapace with two pairs of posterolateral spikes (cps), (fig. 15. H) and carapace lateral margin with sharply pointed denticles (fig. 15. H). Description: Description based on 2 males and 1 female. MALE: Body length: 2.1 mm. Uniformly orange-brown colored species, legs pale orange (figs. 15. A–C). Sternum with radial furrows of large, roundish, droplike pits between coxae I-II, II-III, III-IV (fig. 15. D), anterior margin with interrupted transverse groove (itg) (fig. 15. D). Carapace with two pairs of posterolateral spikes (cps) (figs. 15. F, H); posterolateral edge with a pair of pits (cpp) (figs. 15. F, H); lateral margin straight from dorsal view. Eye group by radius to diameter of anterior lateral eyes narrower than clypeus (fig. 15. E). Abdomen scuto-pedicel region and pedicel tube unmodified (fig. 15. G). No detailed description on promarginal chelicerae setae, serrula, grooves on lateral margin of sternum, trichobothria hood structure, tarsal organ and scopula between claws. Male genitalia: Similar to G. asterobothros n. sp. with a long slender, lamellar embolus (em), adjacent to an embolic accessory appendage (ma) and a lamellar conductor (co) (figs. 16. A–E). Mesal embolic accessory appendage (ma) with a transparent, denticulated seam (ds) (figs. 16. A–C). Conical extension unincisive (ce) (figs. 16. A–C). FEMALE: Body length 2.3 mm. Female genitalia: Ventral view (fig. 16. D): Without external features. Distribution: Known only from the type location, Mount Ophir, West-Malaysia (fig. 49. A).Published as part of Eichenberger, Beata, Kranz-Baltensperger, Yvonne, Ott, Ricardo, Graber, Werner, Nentwig, Wolfgang & Kropf, Christian, 2012, Morphology of new Indian / Indonesian Gamasomorpha and Xestaspis species (Araneae: Oonopidae) 3160, pp. 1-68 in Zootaxa 3160 (1) on page 21, DOI: 10.11646/zootaxa.3160.1.1, http://zenodo.org/record/524692
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
The construction of Karen Karnak: The multi-author-function
No full textThis thesis is situated within the comparatively recent developments of Web 2.0 and the emergence of interactive WikiMedia, and explores the mode of authorship within a Read/Write culture compared to that of a Read/Only tradition. The hypothesis of this study is that the role of the audience has become merged with the author, and as such, represents new functions and attributes, distinct from a more conventional concept of authorship, in which the roles of audience and author are more separate. Read/Write and participatory culture, as defined by this study, is focused on collaboration, and includes the influences of D.I.Y. culture, Open-Source practices and the production of text by multiple authors. Multi-authorship presents a re-thinking of several concepts which support the notion of the individual author, since the focus of multi-authorship is not on attribution and ownership of a finished text, but on the continued malleability of a text. Modes of multi-authorship, demonstrated in the use of the pseudonyms Alan Smithee and Karen Eliot, represent declarative authors whose names signify multiple origins, whilst concurrently indicating a distinct body of work. The function of these names form an important context to this study, since primary research involves the construction of an experimental mode of multi-authorship utilising WikiMedia technology and the interaction of thirty nine participants, who are invited to create a body of work under the collective pseudonym Karen Karnak. The data generated by this experiment is analysed using aspects of Michel Foucault's author-function to identify and determine power structures inherent in the WikiMedia context. The interplay of power structures, including concepts such as identity, ownership and the body of work, affect the resulting mode of authorship and contribute to the construction of Karen Karnak, suggesting further areas of research into the emerging multi-author
- …
