113,482 research outputs found
Caracladus zamoniensis Frick & Muff, 2009, spec. nov.
No full text<i>Caracladus zamoniensis</i> spec. nov. <p>(Figs 48–58)</p> <p> <i>Caracladus avicula,</i> Lessert 1907: 108, figs 5–6, ♂ misidentified; Lessert 1910: 160, figs 98–99, ♂ misidentified.</p> <p> <b>Type material.</b> <b>HOLOTYPE: Switzerland:</b> <i>Grisons</i>: Sur, Alp Flix, Salategnas, 1960 m [46°31'11.00'' N, 9°38'46.00'' E], 1♂ 24.x.2007, litter sieving, close to the edge of a subalpine forest of Norway spruce (<i>Picea abies</i>), leg. H. Frick, P. Muff, S. Klopfstein, det. H. Frick (NMBE Ar6741). <b>PARATYPES: Switzerland:</b> <i>Grisons</i>: Sur, Alp Flix, Salategnas, 1960 m [46°31'11.00'' N, 9°38'46.00'' E], 3♂ 4♀ 24.x.2007, litter sieving, close to the edge of a subalpine forest of Norway spruce (<i>Picea abies</i>), leg. H. Frick, P. Muff, S. Klopfstein, det. H. Frick (NMBE AR 6742); Sur, Alp Flix, Salategnas, 1960 m [46°31'09.01'' N, 9°38'50.07'' E], 1♀ 17.x.–06.v.2005, pitfall trap, in spruce forest, leg. P. Muff, det. H. Frick (NMBE Ar6736) (Muff <i>et al.</i> 2007); Sur, Alp Flix, Salategnas, 1960 m [46°31'11.00'' N, 9°38'46.00'' E], 1♂ 19.ix.–16.x.2005, pitfall trap, in spruce forest, leg. P. Muff, det. H. Frick (NMBE Ar6735) (Muff <i>et al.</i> 2007); Sur, Alp Flix, Salategnas, 1960m [46°31'11.00'' N, 9°38'46.00'' E], 1♀ 27.v.-24.vi.2005, pitfall trap, in spruce forest, leg. P. Muff, det. H. Frick (MHNG) (Muff <i>et al.</i> 2007); Sur, Alp Flix, Salategnas, 1960 m [46°31'11.00'' N, 9°38'46.00'' E], 1♂ 21.v.–24.vi.2005, pitfall trap, in spruce forest, leg. P. Muff, det. H. Frick (MHNG) (Muff <i>et al.</i> 2007); Sur, Alp Flix, Salategnas, 1960 m [46°31'11.50'' N, 9°38'41.89'' E], 1♂ 17.x.2005 – 06.v.2005, pitfall traps, in spruce forest, leg. P. Muff, det. H. Frick (NMB 2795b) (Muff <i>et al.</i> 2007); Sur, Alp Flix, Salategnas, 1960 m [46°31'11.00'' N, 9°38'46.00'' E], 1♀ 17.x.2005 – 06.v.2006, pitfall traps, in spruce forest, leg. P. Muff, det. H. Frick (NMB 2795a) (Muff <i>et al.</i> 2007); Sur, Alp Flix, Salategnas, 1960 m [46°31'11.50'' N, 9°38'41.89'' E], 1♂ 17.x.2005 – 06.v.2005, pitfall traps, in spruce forest, leg. P. Muff, det. H. Frick (SMF) (Muff <i>et al.</i> 2007); Sur, Alp Flix, Salategnas, 1960 m [46°31'09.24'' N, 9°38'47.74'' E], 1♀ 19.ix.-16.x.2005, pitfall trap, alpine timberline, leg. P. Muff, det. H. Frick (SMF) (Muff <i>et al.</i> 2007).</p> <p> <b>Examined material. Austria:</b> <i>Vorarlberg</i>: Montafon, Garneratal, close to Gaschurn, 1560 m [46°57'56'' N, 10°00'40'' E], 1♂ 19.vii.–29.viii.2000, leg., det. and coll. W. Breuss (Breuss unpubl.). <b>France:</b> <i>Rhône- Alpes</i>: Haute-Savoie, Chamonix, montagne des Posettes (Montroc), 1600 m [45°59'40'' N, 6°56'03'' E], 1♀ 18.viii.1993, spruce forest with some birch trees, ground dwelling, leg., det. and coll. J.-C. Ledoux (Ledoux unpubl.); Vallorcine, entrance to the canyon of Bérard, 1680 m [46°02'30'' N, 6°56'10'' E], 1♂ 17.viii.1993, underbrush of larch trees, in litter, leg., det. and coll. J.-C. Ledoux (Ledoux unpubl.). <i>Provence-Alpes-Côte d’Azur</i>: Alpes-de-Haute-Provence, Banon, ca. 800 m [44°02'16'' N, 5°37'40'' E], 1♂ 11.v.1986, leg. P. Poot, det. and coll. R. Bosmans (Bosmans unpubl.); Hautes-Alpes, Ceillac, ca. 1650 m [44°40'03'' N, 6°46'39'' E], 1♀ 04.viii.1980, leg. P. Poot, det. and coll. R. Bosmans (Bosmans unpubl.). <b>Switzerland:</b> <i>Bern</i>: Axalp, 1550 m [46°43'00'' N, 8°02'20'' E], 1♂ vi., leg. R. de Lessert, det. H. Frick (MHNG) (Lessert 1907). <i>Grisons</i>: Sur, Alp Flix, Salategnas, 1960 m [46°31'11.50'' N, 9°38'41.89'' E], 3♂ 17.x.2005 – 06.v.2005, pitfall traps, in spruce forest, leg. P. Muff, det. H. Frick (NMBE AR 6740) (Muff <i>et al.</i> 2007); Sur, Alp Flix, Salategnas, 1960 m [46°31'11.00'' N, 9°38'46.00'' E], 1♂ 21.v.–24.vi.2005, pitfall trap, in spruce forest, leg. P. Muff, det. H. Frick (coll. H. Frick, SP _0362) (Muff <i>et al.</i> 2007); Sur, Alp Flix, Salategnas, 1960 m [46°31'11.00'' N, 9°38'46.00'' E], 1♀ 17.x.2005 – 06.v.2006, pitfall traps, in spruce forest, leg. P. Muff, det. H. Frick (coll. H. Frick, SP _0363) (Muff <i>et al.</i> 2007); Trins, Mulins, above Purcs, ca. 1800 m [46°50'42.32'' N, 9°21'11.41'' E], 1♂ 2♀ 01.viii.1930, leg. E. Schenkel, det. P. Muff (NMB 2795f) (Schenkel 1933); Trins, Mulins, Bargis–Rischiglus–Furca–Flimserstein [46°51'30'' N, 9°17'30'' E], 1♀ 11.viii.1930, alpine zone, leg. E. Schenkel, det. P. Muff (NMB 2795f) (Schenkel 1933); Trins, Mulins, Belmont–Bargis, ca. 1550–2000 m [46°51'10'' N, 9°18'40'' E], 1♀ 21.vii.1930, leg. E. Schenkel, det. P. Muff (NMB 2795f) (Schenkel 1933); Trins, Mulins, below Alp Mora, ca. 1800 m [46°50'44'' N, 9°21'10'' E], 1♂ 2♀ 11.viii.1931, upper forest part, leg. E. Schenkel, det. P. Muff (NMB 2795f) (Schenkel 1933); Trins, Mulins, Si Munt-Uaul Sec, ca. 1200 m [46°50'0'' N, 9°21'10'' E], 1♂ 1♀ 04viii.1930, leg. E. Schenkel, det. P. Muff (NMB 2795f) (Schenkel 1933). <i>Nidwalden</i>: Bruniswaldalp close to Altzellen,> 1400 m [46°51'20'' N, 8°23'20'' E], 1♂ 4♀ viii., leg. E. Schenkel, det. P. Muff (NMB 2795g) (Schenkel 1923). <i>Ticino</i>: Val Bedretto, Bedretto to Alpe di Folcra, 1400–1800 m [46°30'8'' N, 8°30'59'' E], 1♀ 11.–22.vii.1927 /1928, forest slope on the right valley side, leg. E. Schenkel, det. P. Muff (NMB 2795e) (Schenkel 1929). <i>Valais</i>: close to Fiesch, Rafgarten – Ober Titer, 1500 m – 1600 m [46°30'50'' N, 8°18'20'' E], 6♀ 15.vii.1925, leg. E. Schenkel, det. P. Muff (NMB 2795c) (Schenkel 1926); Fionnay, 1500 m [46°01'54'' N, 7°18'26'' E], 1♂ 2♀ ix.1906, in moss of spruce forest, leg. R. de Lessert, det. H. Frick (MHNG) (Lessert 1907; Thaler 1972); Leukerbad, ca. 1400 m [46°22'30'' N, 7°37'30'' E], 1♂ 4♀ viii.1930, leg. R. de Lessert, det. H. Frick (MHNG), 1♂ 1♀ viii.1930, leg. R. de Lessert, det. P. Muff (NMB 2795h) (Lessert 1930); Lötschental, close to Ried, 1500 m – 1600 m [46°24'50'' N, 7°48'20'' E], 1♂ 11♀ vii.1938, leg. E. Schenkel, det. P. Muff (NMB 2795i) (Schenkel 1939); Saas-Tal, Saas-Tal below Saas-Fee, Almagell–Saas-Fee, ca. 1600 m [46°06'30'' N, 7°55'40'' E], 1♂ vii./viii., leg. E. Schenkel, det. P. Muff (NMB 810d) (Schenkel unpubl.).</p> <p> <b>Diagnosis.</b> <i>C. zamoniensis</i> spec. nov. is most similar to <i>C. avicula</i> but differs in the shape of the male and female genitalia and the shape of the male cephalic lobe.</p> <p> <i>Males</i>: Cephalic lobe of <i>C. zamoniensis</i> spec. nov. more robust than in <i>C. avicula</i>: the neck-like prolongation of <i>C. zamoniensis</i> spec. nov. is of equal diameter directly below and above the eye-field (AME, ALE, PLE) (Fig. 54) but much thinner below the eye-field in <i>C. avicula</i> (Fig. 23); distance between sulcus and AME is below 0.11 mm in <i>C. zamoniensis</i> spec. nov. (Fig. 53) and above 0.12 mm in <i>C. avicula</i> (Fig. 22); sulcus cup-like in <i>C. zamoniensis</i> spec. nov. and channel-like in <i>C. avicula</i>. Embolus of <i>C. zamoniensis</i> spec. nov. short, broad and robust basally, thin and U-shaped distally (Figs 49, 50); <i>C. avicula</i> with long, straight and whip-like embolus that narrows constantly towards the end (Figs 18, 19). <i>C. zamoniensis</i> spec. nov. tibia I proximally bent and dorsally with glabrous area on the proximal half (Fig. 55) and no macroseta, in <i>C. avicula</i> with one dorsal macroseta in small glabrous field (Fig. 24).</p> <p> <i>Females</i>: Epigyne of <i>C. zamoniensis</i> spec. nov. with two anterior pouches formed by the ventral and dorsal plate, anterior borders highly sclerotised (Fig. 56). Pouches in <i>C. avicula</i> much larger and less sclerotised (Fig. 26). <i>C. zamoniensis</i> spec. nov. with ventrally visible square dorsal plate, sclerotised parts of the vulva visible in transparency through ventral and dorsal plate defining a bright hourglass-like form centrally (Fig. 56). <i>C. avicula</i> with rectangular dorsal plate without sclerotised parts visible in transparency through dorsal plate but lateral to it (Fig. 26). Vulva of <i>C. zamoniensis</i> spec. nov. without copulatory duct, those of <i>C. avicula</i> with. Vulva of <i>C. zamoniensis</i> spec. nov. simple with hook-like sclerotised pouch borders, originating anterior and mesal to the receptacula (Figs 57, 58), in <i>C. avicula</i> shapes more complex (Figs 27, 28).</p> <p> <b> Description. <i>Male</i></b> (Holotype, NMBE Ar 6741): Total length 2.18 mm. Cephalothorax: honey brown (138 U); reticulated; broad oval; 0.85 mm long without cephalic lobe (Fig. 54), 1.22 mm long with cephalic lobe (Fig. 54); 0.65 mm wide. Cephalic lobe: honey brown (138 U); shaft with few long hairs (Fig. 52); shaft constantly thick, at thinnest part below the eye-field 0.10 mm wide laterally, 0.11 mm wide dorsally (Figs 52, 54); tip of lobe laterally flattened with many short, stout and few long, slender hairs anterior to the PME (Figs 52, 54); sulcus 0.08 mm below AME (Fig. 53). Eyes: PME topmost on the cephalic lobe; AME projecting forward, lateral eyes besides the AME; one long macroseta projecting forward between AME (Fig. 54). Clypeus: directed obliquely backwards. Sternum: very fine brown (469 U) pigmentation on yellow (124 U) ground, dark brown (469 U) on the margins; 0.47 mm long; 0.51 mm wide; shield-shaped. Chelicerae: yellow (124 U); promargin with 5 teeth; retromargin with 5 denticles; stridulatory striae very dense and fine. Legs: yellow to light brown (120 U); formula 4-1-2-3; tibia I proximally bent and dorsal with glabrous area from proximal to more than half its length (Fig. 55), tibia III–IV with one dorsal proximal macroseta (0-0-1-1); metatarsi I–III with one trichobothrium, Tm I: 0.54 mm, metatarsus IV without trichobothria. Pedipalp: patella two times longer than broad, tibia retrolateral with expansion (round glabrous area, Fig. 51), one retrolateral and one prolateral trichobothrium (Fig. 51); paracymbium a simple clasp; tegulum distal with short and long papillae on protegulum (Fig. 48); suprategular apophysis semi-circular; marginal suprategular apophysis rather small, emerging close to the tip; distal suprategular apophysis robust, highly sclerotised (Figs 49, 50); column broad; embolic membrane slender; radix simple without any processes other than the elongated radical tailpiece and the embolus; embolus strongly sclerotised, twisted; broad at the base; very thin, curved tip (Fig. 50). Abdomen: dark olive green-brown (125 U); booklung covers very light brown (467 U); scaly.</p> <p> <i>Female</i> (Paratype, NMBE Ar 6742): Total length 1.81 mm. Cephalothorax: honey brown (138 U); reticulated; 0.89 mm long; 0.65 mm wide. Eyes: posterior row slightly procurved; anterior row straight. Sternum: very fine brown (469 U) pigmentation on yellow (124 U) ground, dark brown (469 U) on the margins; 0.46 mm long; 0.46 mm wide; shield-shaped. Chelicerae: honey brown (138 U); promargin with 5 large teeth; retromargin with 5 denticles; stridulatory striae very fine and dense. Legs: yellow (122 U); formula 4-1-2-3; tibia I–IV with one dorsal proximal macroseta (1-1-1-1); metatarsi I–III with one trichobothrium, Tm I: 0.52 mm, metatarsus IV without trichobothria. Epigyne: simple with hook-like sclerotised pouch borders, originating anteriorly and mesally to the receptacula (Figs. 57, 58); dorsal plate square, fully visible in ventral view; sclerotised parts of vulva visible in transparency through ventral and dorsal plate, defining a bright hourglass-like form centrally (Fig. 56). Vulva: without copulatory duct; receptacula globular, incoming dorsally. Abdomen: dorsal olive green-brown (119 U), ventral darker (147 U).</p> <p> <b>Variation</b>. The measurements are based on all type material (10♂ 9♀) plus specimens from the NMB (810i: 1♂ 2♀) and the MHNG (Axalp: 1♂; Fionnay: 1♂ 1♀).</p> <p> <i>Males</i> (n=13, means in brackets): The coloration is variable. Total length 1.91–2.18 mm (2.09 mm). Cephalothorax: 0.73–0.86 mm (0.82 mm) long without cephalic lobe, 1.10–1.23 mm (1.18 mm) long with cephalic lobe; 0.61–0.69 mm (0.65 mm) wide. Cephalic lobe: at thinnest part below the eye-field 0.10–0.13 mm (0.11 mm) wide laterally, 0.09–0.11 mm (0.11 mm) wide dorsally; sulcus 0.07–0.11 mm (0.08 mm) below AME (Fig. 53). Legs: Tm I: 0.50–0.59 mm (0.54 mm).</p> <p> <i>Females</i> (n=12, means in brackets): The colorations are variable. Total length 1.62–2.00 mm (1.82 mm). Cephalothorax: 0.75–0.89 mm (0.82 mm) long; 0.60–0.65 mm (0.62 mm) wide. Legs: Tm I: 0.48–0.60 mm (0.53 mm).</p> <p> <b>Distribution.</b> Endemic to the Alps, occurring in the Western- and Central Alps in France, Switzerland and Austria (Fig. 59). The Eastern distribution border seems to be in Western Austria. Checking of specimens of <i>C. avicula</i> collected west of Vorarlberg (Austria) revealed no misidentifications.</p> <p> <b>Habitat.</b> <i>C. zamoniensis</i> spec. nov. occurs in the litter layer of Norway spruce (<i>Picea abies</i>) forests at the alpine timberline. Most sampling sites were inside the forest with no direct sunlight under branches of Norway spruce. The collection site and its surroundings were sampled intensively in two previous studies (Frick <i>et al.</i> 2006; Frick <i>et al.</i> 2007; Muff <i>et al.</i> 2007). We found no specimens of <i>C. zamoniensis</i> spec. nov. around stand alone trees in the dwarf-shrub heath with a similar microclimate as the closed forests. <i>C. zamoniensis</i> spec. nov. seems to avoid the open land. We only found two specimens in more open areas in the dwarf-shrub heath close to the subalpine forest. <i>C. zamoniensis</i> spec. nov. was never collected together with <i>C. avicula</i> in the same pitfall trap but already in pitfall traps about 20 m away from <i>C. avicula</i>. The locus typicus is approximately 50 m away from the alpine timberline in the subalpine deciduous forest. We found the type specimens in litter under snow close to the tree trunk under a Norway spruce (Fig. 47) at 1960 m a.s.l. Other specimens were found between 1400–2000 m in litter and moss of spruce forests (e.g. Schenkel 1939). One record was much lower at app. 800 m in France (Bosmans pers. comm.).</p> <p> <b>Phenology.</b> This species seems to be eurychronous. All records of other authors at altitudes from 1400 m to 1800 m were between July and September. However, at the type locality (1960 m) specimens were exclusively found between September and June. This corresponds with the time between the first snow fall and the beginning of the snow free time.</p> <p> <b>Etymology.</b> The cephalic lobe of the male is morphologically very similar to the noses of the so called dwarf pirates and other imaginary figures from “Zamonia”. Zamonia is a continent inhabited by freaky creatures in the novel “The 13 ½ Lives of Captain Bluebear” by the German writer Walter Moers (2000). Translated, the species name means “ <i>Caracladus</i> from Zamonia”.</p> <p> <b>Remarks.</b> <i>C. zamoniensis</i> spec. nov. lacks a copulatory duct. The insertion of sperm is assumed to take place through a space between the ventral and the dorsal plates which are supposed to be pressed apart during copulation.</p> <p> The specimens that Lessert (1907, 1910) shows have been evaluated by H.F. The figures of males in Lessert (1907: figs 5, 6) and reprinted in Lessert (1910: figs 98, 99) show <i>C. zamoniensis</i> spec. nov. and not <i>C.</i></p> <p> <i>avicula</i>. The female mentioned in Lessert (1907: fig. 7) and Lessert (1910: fig. 100) shows <i>Diplocentria bidentata</i> (Emerton, 1882) (Thaler 1972).</p> <p> The specimen that was pictured by Pesarini (1996: figs 9–10) was not available to the authors. A definite assignment to either <i>C. avicula</i> or <i>C. zamoniensis</i> spec. nov. is not possible. However, his records are referred to as <i>C. avicula</i> in the distribution map (Fig. 59) and the list of records.</p> <p> The remaining pictures so far named as <i>C. avicula</i> in Heimer and Nentwig (1991: figs 350.1–350.5), Millidge (1977: fig. 162), Simon (1884: figs 408, 409 and fig. 8 on plate 27) and Thaler (1969: figs 16–21, 1972: figs 7–11) are correctly assigned to <i>C. avicula</i>.</p>Published as part of <i>Frick, Holger & Muff, Patrick, 2009, Revision of the genus Caracladus with the description of Caracladus zamoniensis spec. nov. (Araneae, Linyphiidae, Erigoninae), pp. 1-37 in Zootaxa 1982</i> on pages 20-26, DOI: <a href="http://zenodo.org/record/185321">10.5281/zenodo.185321</a>
Frick Collection
No full textp. 217-368 : ill., maps (some col.) ; 26 cm.Includes bibliographical references (p. 350-368)."Late Tertiary Valentine and Ash Hollow formations of the Ogallala Group in north-central Nebraska contain two previously unnamed fossiliferous ash-bearing members. These, with four published members, provide a startigraphic framework for large collections of fossils in the Frick Collection in AMNH and other institutions. The Cornell Dam Member (new) in the basal Valentine Formation has salient lithic features and geologic relationships not found in other members of the Valentine. Basal channel sand disconformably overlying the Rosebud Formation contains macro- and microinvertebrate fossils (Norden Fauna, new) that also show the ecological and faunal distinction of this member. Fission track dates suggest that Valentine sediments spanned one and perhaps three million years. The Merritt Dam Member (new) of late Clarendonian to late Hemphillian age, disconformably overlies the Cap Rock Member of the referred Ash Hollow Formation. The Merritt Dam Member is less cliff forming than the Cap Rock Member, contains more volcanic ash and local channel and pond sediments. Tectonic readjustment caused deep channel erosion through the Ogallala into Arikaree rocks on the east flank of the Chadron Arch and eastward into the Cap Rock Member and the Valentine Formation. Sediments filling some of these channels contain vertebrate fossils overlain by vitric tuffs with a fission track date of 9.5 [+ or -] 0.8 Ma. The paleogeomorphology of the Ogallala Group and its depositonal framework is the product of overlapping alluvial fans of at least three paleodrainage systems which filled pre-existing valleys and spread sediments over a vast Great Plains area in Nebraska and South Dakota. In north-central Nebraska widespread aggradation and two short periods of degradation occurred during the Valentinian. Gradual aggradation during the early Clarendonian was followed by intermittent aggradation and degradation during the late Clarendonian and Hemphillian. The stratigraphic allocation and history of 98 collecting localities and documentation of 90 holotypes of fossil vertebrates and 13 plants provide a firm base for continued research. The prinipal aquifer in the Ogallala is the Crookston Bridge Member of the Valentine Formation"--P. 217
Calycomyza flavinotum Frick
No full textCalycomyza flavinotum (Frick) (Figs. 107–108) Material examined. MASSACHUSETTS: Berkshire Co., Savoy, Tannery Falls parking area, 12.vii.2012, em. 31.vii.2012, C.S. Eiseman, ex Eupatorium perfoliatum, #CSE15, CNC391394, 391396 (1♂ 2♀); Franklin Co., Northfield, 276 Old Wendell Rd., 8.ix.2013, em. 11.x.2013, C.S. Eiseman, ex Arctium minus, #CSE936, CNC392639 (1♂); same collection data, em. 17–29.iv.2014, #CSE1083, CNC384749–384753 (2♂ 3♀). Hosts. Asteraceae: Ageratina altissima (L.) R.M. King & H. Rob., Arctium lappa L., A. minus Bernh., * Eupatorium perfoliatum L., Eutrochium maculatum (L.) E.E. Lamont, E. purpureum (L.) E.E. Lamont (Frick 1956; Spencer 1969; Spencer & Steyskal 1986). A female paratype from Ontario labeled “on Viburnum pubescens ” (= V. dentatum L., Adoxaceae) was misinterpreted by Frick (1956, 1959) as a rearing record (Spencer 1969). Leaf mine. (Figs. 107–108) Initially an irregular track, expanding into a large, whitish blotch with frass in numerous fine grains. Mines of several larvae coalesce to form a single blotch. Puparium. Reddish-brown; formed outside the mine. Distribution. USA: MA, ME, MN, NY, PA, WI; Canada: ON.Published as part of Eiseman, Charles S. & Lonsdale, Owen, 2018, New state and host records for Agromyzidae (Diptera) in the United States, with the description of thirty new species, pp. 1-156 in Zootaxa 4479 (1) on page 31, DOI: 10.11646/zootaxa.4479.1.1, http://zenodo.org/record/145291
Publicationen der V. Kuffner’schen Sternwarte in Wien. Herausgegeben von Dr Léo de Ball. V Band, Wien, 1900. W. Frick, in-4
No full textPublicationen der V. Kuffner’schen Sternwarte in Wien. Herausgegeben von Dr Léo de Ball. V Band, Wien, 1900. W. Frick, in-4. In: Bulletin astronomique, tome 17, 1900. p. 208
Publication en per V. Kuffner’schen Sternwarte in Wien. Herausgegeben von Dr Léo de Ball. IV. Band. Wien, 1896, W. Frick
No full textR. R. Publication en per V. Kuffner’schen Sternwarte in Wien. Herausgegeben von Dr Léo de Ball. IV. Band. Wien, 1896, W. Frick. In: Bulletin astronomique, tome 15, 1898. pp. 425-426
author-bios-SRD-19-0063.R1 – Supplemental material for The Network Structure of Police Misconduct
No full textSupplemental material, author-bios-SRD-19-0063.R1 for The Network Structure of Police Misconduct by George Wood, Daria Roithmayr and Andrew V. Papachristos in Socius</p
Gandhi, Mohandas Karamchand: Ausgewählte Werke, 5 Bände, Hg. v. Shriman Narayan, bearbeitet von Wolfgang Sternstein, Nachwort von Gita Dharampal-Frick, Wallstein Verlag. Göttingen. 2011. 2098 S. [Rezension]
No full textRezension von: Gandhi, Mohandas Karamchand: Ausgewählte Werke, 5 Bände, Hg. v. Shriman Narayan, bearbeitet von Wolfgang Sternstein, Nachwort von Gita Dharampal-Frick, Wallstein Verlag. Göttingen. 2011. 2098 S
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
Threshold crossings and doctoral education: learning from the examination of doctoral education
No full textCITATION: Wisker, G., Kiley, M. & Masika, R. 2016. Threshold crossings and doctoral education: learning from the examination of doctoral education, in L. Frick, V. Trafford & M. Fourie-Malherbe (eds.). Being Scholarly: Festschrift in honour of the work of Eli M Bitzer. Stellenbosch: SUN MeDIA. 117-124. doi:10.18820/9781928314219/11.The original publication is available from AFRICAN SUN MeDIA, Stellenbosch: South Africa.Introduction: Doctoral supervision has been identified as a key factor in timely PhD completion.
Therefore, this chapter sets out to explore what can be learned from doctoral
examinations to support doctoral education and supervision. Applying the lens
of threshold concepts theories it reflects on findings raised in previous research
reports. We argue that threshold concepts theories, in addition to providing
useful insights for doctoral examining, also inform supervisory approaches and
enhance doctoral students’ learning and completion. We show that understanding
conceptual threshold crossing at different stages in a doctoral student’s learning
journey, and the learning, teaching and supervision which support this, can lead to
more effective learner strategies, focused guidance and student preparation.Publisher's versio
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
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