162,792 research outputs found
Pygmarrhopalites buffaloensis Zeppelini, Taylor & Slay, 2009, sp. nov.
No full textPygmarrhopalites buffaloensis sp. nov. pygmaeus- group s. str. (Fig. 4) Description. No traces of pigment, dorsal body setae short, very scattered on anterior part, more than twice as long on posterior part of great abdomen, posterior setae longer than third unguis (Table 2). Ant. IV with 6 subsegments (Fig. 4 A), apex with capitate sense rod. Ant. III not swollen basally; sense organ with 2 parallel sense rods in separate pits; seta Aai curved, blunt; Api and Ape slender, bristle-like and short, Ae, Ap and Ai normal elongate setae, more than twice as long as Ape and Api (Fig. 4 B). 1 + 1 eyes present. Dorsal cephalic setae short, not spine-like, M 4–5 present (Fig. 4 C). Metatrochanteral organ elongate (Fig. 4 D). Seta FSa present on all tibiotarsi. First unguis slender, elongated, all ungues with inner tooth, tunica absent. First unguiculus slender without corner tooth, apical filament exceeding unguis tip. Second and third unguiculi with short apical filament, third unguis lanceolate with corner tooth on distal third (Figs. 4 E). Corpus tenaculum with two setae (Fig. 4 F). Dens with 7 dorsal E setae, E 1 strongly spine-like, other E setae normal; L 1 spine-like, L 2–3 present, 4 ventral setae rows (3,2,1,1) present (Fig. 4 G), dental chaetotaxy in Table 3. Mucro narrow, gutter-like, slightly spoon shaped tip, outer edge serrate, inner edge almost smooth. Anal valve without cuticular spines (Fig. 4 H); setae C 1 normal, C 2–6 swollen basally, D 5 absent, D 6–10 present, chaetotaxy in Table 4. Female subanal appendage slightly palmate, deeply serrated distally (Fig. 4 I). Type material. Holotype (female) (number 1 in the slide): USA, ARKANSAS, Newton Co., Walnut Cave, 29 -xii- 2003, M.E. Slay, C.J. Bitting leg. (INHS). Paratypes: 1 female mounted in a slide and 2 adults in alcohol, same locality as holotype (INHS). Etymology. The type specimens were collected from a cave near the Buffalo River, in northern Arkansas. Remarks. Pygmarrhopalites buffaloensis was found in single cave at Buffalo National River approximately 26 km upstream from the cave containing P. youngsteadtii. The climate is Cfa, physiographic province Springfield Plateau of the Ozark Plateaus. This species resembles P. s a p o by presenting the E 2–7 not spine-like, and can be distinguished from this by the subanal appendages, the absence of D 5 on anal valve, and most of its chaetotaxy.Published as part of Zeppelini, Douglas, Taylor, Steven J. & Slay, Michael E., 2009, Cave Pygmarrhopalites Vargovitsh, 2009 (Collembola, Symphypleona, Arrhopalitidae) in United States, pp. 1-18 in Zootaxa 2204 on pages 10-12, DOI: 10.5281/zenodo.18968
Pygmarrhopalites plethorasari Zeppelini, Taylor & Slay, 2009, sp. nov.
No full textPygmarrhopalites plethorasari sp. nov. pygmaeus -group s. str. (Fig. 2) Description. No traces of pigment, dorsal body setae short on anterior, longer on posterior part of great abdomen, posterior setae about same length as third unguis (Table 2). Ant. IV of holotype 1.32 times cephalic diagonal, with five subsegments (Fig. 2 A), apex with capitate sense rod. Ant. III not swollen basally; sense organ (Fig. 2 B) with 2 parallel sense rods in single socket; seta Aai club-shaped, acuminate; Api and Ape short, slender and acuminate; Ae, Ap and Ai normal, elongate setae. 1 + 1 eyes. Dorsal cephalic setae not spine-like, M 5 present, L 1–2 not seen (Fig. 2 C). Metatrochanteral organ elongate (Fig. 2 D). Seta FSa present on all tibiotarsi. All ungues with inner tooth, no tunica. First and second unguiculi with conspicuous corner tooth, third unguiculus slender, lanceolate, with tiny corner tooth in distal third, all unguiculi with apical filament exceeding unguis tip in first and second claw pairs (Fig. 2 E). Corpus tenaculum with two setae (Fig. 2 F). Dens with 7 dorsal E setae, E 1 and E 3 strongly spine-like, other E setae normal; L 1–3 strongly spine-like, 4 ventral setae rows (3,2,1,1) present (Fig. 2 G), dental chaetotaxy in Table 3. Mucro narrow, gutter-like, with spoon shaped or globular tip, both edges serrate. Anal valve without cuticular spines (Fig. 2 H); setae C 1 forked, C 2 swollen, C 3–4 slightly lamellate, C 4 branched at base, C 5–6 lamellate, D 5 present, chaetotaxy in Table 4. Female subanal appendage fringed at tip (Fig. 2 I). Dental chaetotaxy Ant. iv Ant. iii Eyes per Ceph. Id ve ve Species subd. basal side spines E 1 E 2 E 3 E 6 E 7 2 -3 L 1 L 2 L 3 L 4 1 5 P. ashcraftensis 6 - 1 - S + S + + + S S s + + - P. leonardwoodensis 5 - 1 - S + S + + + S S S - + - P. buffaloensis 6 - 1 - S + + + + + S + + - + - P. youngsteadtii 7 - 1 - S + S + + + S s - - + - P. plethorasari 5 - 1 - S + S + + + S S s - + - P. shoshoneiensis 7 - 1 v - S + + + + + S s s - + - += present, -= absent, S= strongly spine-like, s= spine-like, v= vestigial. Type material. Holotype (female) (number 1 in the slide): USA, MISSOURI, Pulaski Co., Big Freeman Cave, 9 -i-04, S. Taylor, M. Slay leg. (INHS). Paratypes: female in the same slide with holotype and 3 females: USA, MISSOURI, Pulaski Co., Ramsey Cave, 9 -i-04, S. Taylor, M. Slay leg. (INHS). 8 paratypes in alcohol, same locality as the latter ones (INHS). Etymology. An anagram of the name of the type genus of the family, Arrhopalites. Remarks. Pygmarrhopalites plethorasari was found in caves of the Fort Leonard Wood military installation, close to each other in the physiographic province Salem Plateau of the Ozark Plateaus, the climate is Cfa. This species resembles P. hubbardi from Colorado in the apical filament of feet complexes, dental chaetotaxy, and the forked C 1 seta on the anal valve. The fourth antennal subsegmentation and the basal swelling of the third antennal segment of P. hubbardi, the female subanal appendages, and the lamellate C setae on anal valve of P. plethorasari differentiate these species from each other.Published as part of Zeppelini, Douglas, Taylor, Steven J. & Slay, Michael E., 2009, Cave Pygmarrhopalites Vargovitsh, 2009 (Collembola, Symphypleona, Arrhopalitidae) in United States, pp. 1-18 in Zootaxa 2204 on pages 6-8, DOI: 10.5281/zenodo.18968
Arrhopalites caecus Tullberg 1871
No full textArrhopalites caecus (Tullberg, 1871) Material examined. USA: CALIFORNIA: Siskiyou Co.: Coral Reef Cave, 12 -vi-05, S.J. Taylor, J.K. Krejca, J. Jacoby; NEVADA: White Pine Co.: Snake Creek Cave, 12 -v-06, S.J. Taylor, J.K. Krejca, M.E. Slay, G. Baker; Lehman Cave, 26 -v-06, J.K. Krejca, M.E. Slay, G. Baker, B. Roberts, M. Horner. Remarks. This is the first record for California and Nevada, the species A. caecus has a world wide distribution.Published as part of Zeppelini, Douglas, Taylor, Steven J. & Slay, Michael E., 2009, Cave Pygmarrhopalites Vargovitsh, 2009 (Collembola, Symphypleona, Arrhopalitidae) in United States, pp. 1-18 in Zootaxa 2204 on page 14, DOI: 10.5281/zenodo.18968
The accumulatic slay motion of loom
No full textAnaliza działania bidła krosna tkackiego ujawnia jego wady. Przedstawiono nowe rozwiązanie napędu bidła. Wykazano analitycznie i doświadczalnie, w oparciu o zbudowany model fizyczny, korzystniejsze warunki pracy rezonansowego bidła akumulacyjnego wobec dotychczas stosowanego. Opracowano wskaźniki skuteczności dobicia dowodzące jej trzykrotnej poprawy w rozwiązaniu nowym.The analysis of the loom slay action reveals its defects. The new solutions of slay driver were presented. Better work conditions of resonant accumulatic slay were proved, both analytically and experimentally, on the base of a physical model in comparison with the one used so far. The efficiency indicators of beaten show its treble improve in a new solution
Pygmarrhopalites leonardwoodensis Zeppelini, Taylor & Slay, 2009, sp. nov.
No full textPygmarrhopalites leonardwoodensis sp. nov. pygmaeus -group s. str.; Fig. 1 Description. Animals white in alcohol. Dorsal body setae short on anterior and posterior part of the great abdomen, the posterior setae much longer than the anterior (Fig. 1 A), posterior setae 0.56 times length of third unguis (Table 2). Ant. IV of holotype as long as cephalic diagonal, with five subsegments, apex with capitate sense rod (Fig. 1 B). Ant. III not swollen basally; sense organ (Fig. 1 C) with 2 sense rods in separate sockets; seta Aai club-shaped, blunt; Api and Ape slender, acuminate; Ae, Ap and Ai normal, elongate setae. 1 + 1 eyes. Dorsal cephalic setae not spine-like, M 5 absent (Fig. 1 D). Metatrochanteral organ (seta D 2) elongate (Fig. 1 E). Seta FSa present on all tibiotarsi. All ungues with inner tooth, no tunica. All unguiculi with corner tooth, apical filament reaching unguis tip of first and second claw pairs (Fig. 1 F). Corpus tenaculum with two setae (Fig. 1 G). Dens with 7 dorsal E setae, E 1 and E 3 strongly spine-like, other E setae normal; L 1–3 strongly spine-like, 4 ventral setae rows (3,2,1,1) present (Fig. 1 H), dental chaetotaxy in Table 3. Mucro narrow, gutter-like, with narrow tip, both edges serrate (Fig. 1 I). Anal valve without cuticular spines (Fig. 1 J); setae C 1 swollen, C 3–4 slightly lamellate, C 5–6 lamellate, C 6 branched at base in all specimens examined, D 5 present, D 7 absent, chaetotaxy in Table 4. Female subanal appendage unilaterally fringed in distal half (Fig. 1 K). Type material. Holotype (female) (number 2 in the slide): USA, MISSOURI, Pulaski Co., Folly Cave, 12 -iv-04, S. Taylor, M. Slay leg. (INHS). Paratypes: female, in the same slide with holotype and 5 paratypes in alcohol: USA, MISSOURI, Pulaski Co., Folly Cave, 12 -iv-04, S. Taylor, M. Slay leg. (INHS). Etymology. Refers to the military installation, Fort Leonard Wood, where the species is known to occur. Remarks. Pygmarrhopalites leonardwoodensis was found in a single cave in Fort Leonard Wood, a military installation at the physiographic province Salem Plateau of the Ozark Plateaus. The climate is Cfa, temperate/mesothermal, humid subtropical with uniform precipitation distribution. This species resembles P. madonnensis from Illinois in the foot complexes, head and apical organ of the third antennal segment chaetotaxies, and fourth antennal segment subsegmentation. The strongly serrated lamellae on C 4–6 of P. madonnensis, and the short posterior body setae, the female subanal appendages, the presence of E 7 and the L 3 strongly spine-like on dens in P. leonardwoodensis can differentiate the species from each other. Tibiotarsus 2 width 29.78 24.17 38.47 38.35 25.68 25.57 continued next page 1 Abbreviations in parentheses are used in the table above: Antennae and head: Apical subsegment of the fourth antennal segment (apic-antIV), second subsegment of the fourth antennal segment (antIV sub seg 2), third subsegment (antIV sub seg 3), fourth subsegment (antIV sub seg 4), fifth subsegment (antIV sub seg 5), sixth subsegment (antIV sub seg 6), basal subsegment of the fourth antennal segment (bas-antIV), total length of the fourth antennal segment (Total AntIV), longest seta of the segment (Longest Seta AntIV), widest subsegment of the fourth antennal segment (Widest Subseg AntIV), ratio of the longest seta and the widest subsegment width (ratio Lseta/Wsubseg), ratio of antIV total length and cephalic diagonal (Ratio AntIV/cep-diag), cephalic diagonal (cep-diag), ratio of apical subsegment and total length of fourth antennal segment (ratio Apical subseg / total AntIV), ratio of basal subsegment and total length of fourth antennal segment (ratio Basal subseg /total AntIV); Body: length of the posterior body seta (post-bd-st), maximum length of the third unguis (ung-III), ratio of posterior body seta and the third unguis length (ratio post-bd-st/ung-III), Total Body Length; Legs: length and width of coxa, trochanter, femur and tibia of all legs, ratio of length and width for each leg segment; Dens: dens length, dens width, ratio of length and width of dens (Length/Width Ratio-Dens).Published as part of Zeppelini, Douglas, Taylor, Steven J. & Slay, Michael E., 2009, Cave Pygmarrhopalites Vargovitsh, 2009 (Collembola, Symphypleona, Arrhopalitidae) in United States, pp. 1-18 in Zootaxa 2204 on pages 3-5, DOI: 10.5281/zenodo.18968
Pygmarrhopalites shoshoneiensis Zeppelini, Taylor & Slay, 2009, sp. nov.
No full textPygmarrhopalites shoshoneiensis sp. nov. furcatu s-group. (Fig. 5) Description. No traces of pigment, dorsal body setae short on anterior part and twice as long on posterior part of great abdomen, posterior setae longer than third unguis (Table 2). Ant. IV of holotype 1.34 times the cephalic diagonal, with 7 subsegments (Fig. 5 A), apex with capitate sense rod. Ant. III not swollen basally; sense organ (Fig. 5 B) with 2 parallel sense rods in separate pits; seta Aai straight, blunt; Api slender, bristlelike and short, Ape strong, short, acuminate, Ae, Ap and Ai elongate, about twice as long as Ape and Api. Eyes reduced to pair of smooth round spots in cuticle behind antennae. Dorsal cephalic setae slender, not spine-like, M 4–5 present (Fig. 5 C). Metatrochanteral organ elongate (Fig. 5 D). Seta FSa present on all tibiotarsi. First unguis elongate, all ungues with inner tooth, tunica absent. First unguiculus slender, corner tooth very small or absent. Apical filament exceeding unguis tip in first and second unguiculi. Third unguiculus elongated, with corner tooth and short apical filament (Figs. 5 E). Corpus tenaculum with two setae (Fig. 5 F). Dens with 7 dorsal E setae, E 1 strongly spine-like, other E setae normal; L 1 strongly spine-like, L 2– 3 spine-like, 4 ventral setae rows (3,2,1,1) present (Fig. 5 G), dental chaetotaxy in Table 3. Mucro narrow, gutter-like, with narrow tip, outer edge serrate, inner edge smooth. Anal valve without cuticular spines (Fig. 5 H); setae C 1 forked, C 3–6 swollen basally, D 5 and D 7 absent, chaetotaxy in Table 4. Female subanal appendage forked with both branches deeply fringed (Fig. 5 I). Type material. Holotype (female) (number 3 in the slide): USA, NEVADA, White Pine Co., Model Cave, 24 -v-06, S.J. Taylor. J.K. Krejca, M.E. Slay leg. (INHS). Paratypes: 2 females (number 1 and 2) in the same slide with the holotype, and 6 adults in alcohol, same locality as holotype (INHS). Etymology. The specific epithet refers to the Western Shoshone, a group of Native Americans who have visited the caves of Great Basin National Park for many hundreds of years, leaving behind only traces of their lives. Their tribal homeland encompasses large portions of the Basin and Range province of the Great Basin region. Remarks. Pygmarrhopalites shoshoneiensis type specimens were found in a cave at Great Basin National Park. The physiographic province Basin and Range Province of the Great Basin, climate is BSk, dry, Steppe, middle latitude. This species resembles P. s e x t u s in many aspects, including the shape of female subanal appendages and anal valve chaetotaxy, antenna/cephalic diagonal ratio, fourth antennal segment subdivision, and foot complex. The most important features that split them apart are the presence, in P. shoshoneiensis, of a forked C 1 on the anal valve, the spine-like L 1–3 on dens, the mucro with one smooth edge, the stout short Ape on apical organ of ant. iii, the presence of M 5 on head, and the absence of a conspicuous eye.Published as part of Zeppelini, Douglas, Taylor, Steven J. & Slay, Michael E., 2009, Cave Pygmarrhopalites Vargovitsh, 2009 (Collembola, Symphypleona, Arrhopalitidae) in United States, pp. 1-18 in Zootaxa 2204 on page 12, DOI: 10.5281/zenodo.18968
Developing communities of practice within and outside higher education institutions
No full textThis is the accepted version of the following article: Hodgkinson-Williams, C., Slay, H. & Sieborger, I. 2008. Developing communities of practice within and outside higher education institutions. British Journal of Educational Technology. 39(3): 433–442. DOI: 10.1111/j.1467-8535.2008.00841.x., which has been published in final form at: http://dx.doi.org/10.1111/j.1467-8535.2008.00841.x.Higher education institutions (HEIs) are largely built on the assumption that learning is an individual process best encouraged by explicit teaching that is, on the whole, separated from social engagement with those outside the university community. This perspective has been theoretically challenged by those who argue for a social constructivist learning theory and a more collaborative approach to learning. Information and communication technologies (ICTs) afford lecturers and students an opportunity for extending the boundaries of a learning experience, not merely beyond the lone individual, but beyond the limits of discipline boundaries within a specific university community and beyond the institution into the local community. This paper illustrates how a collaborative effort between lecturers and students from the Computer Science and Education Departments at Rhodes University, teachers from the local community, the provincial Department of Education and a non-governmental organisation developed into an unfolding virtual and physical community of practice which enabled ICT take-up in a number of schools in the Grahamstown District, South Africa. This discussion of what has become known as the e-Yethu project provides an example of how ICTs, underpinned by the insights of social constructivism, the notion of 'community of practice' and in particular Hoadley and Kilner's C4P Framework for Communities of Practice, can serve to help HEIs understand ways in which ICTs can provide opportunities for developing collaborative learning within HEIs, and between the HEI and the local community
[Report to Chief J. E. Curry, by an unknown author #1]
No full textReport to Chief J. E. Curry, by an unknown author. The report contains a list of officers who gave depositions to the United States Attorney
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