11,749 research outputs found
Rede uitgesproken op 17 september 1956 ter gelegenheid van de erepromotie van Dr. Th. von Karman door de promotor Dr. C.B. Biezeno
No full textRede uitgesproken door prof. C.B. Biezeno ter gelegenheid van de erepromotie aan de TH Delft van dr. Theodore von Karman.Precision and Microsystems EngineeringMechanical, Maritime and Materials Engineerin
Prof. Th. W. Adorno and the author Hans Erich Nossack.
No full textProf. Th. W. Adorno and the author Hans Erich Nossack at a reception of Insel Verlag, Buchmesse Frankfurt 1966LB
Author, publisher and bookseller : a tripartite synergy in Nigerian book industry
No full textThis work is about the roles of Author, Publisher and Bookseller in Book development in
Nigeria. The paper started by delving into the history of Book Publishing in Nigeria after
which it proceeded by defining who an author, a publisher, and a bookseller is and
expatiated on the indispensable roles of these key actors in Nigerian Book Industry and in
the emerging Information Society. Furthermore, the various constraints to book
development were identified while the paper advised on how the Book Industry can be
further promoted in Nigeria. However, the paper concluded and made recommendations
on how the Book sector can help in enhancing scholarship in the country
Scymnus (Parapullus) alishanensis Pang and Yu
No full text3. Scymnus (Parapullus) alishanensis Pang and Yu (Figs. 12, 28– 32) Scymnus (Parapullus) alishanensis Pang et Yu, 1993: 230; Yu et al., 2000: 168; Pang et al., 2004: 82; Kovář, 2007: 584; Ren et al., 2009: 68. Diagnosis. This species is similar to S. (P.) tsugae in general appearance and male genitalia, but can be distinguished from it by the dilated of the pre-apex of penis. The shape of the parameres and penis guide is diagnostic. Description. TL: 2.40 mm, TW: 1.65 mm, TH: 1.10 mm, TL/TW: 1.45, PL/PW: 0.48, EL/EW: 1.12. Body oval, moderately convex, dorsum surface with fine, pale yellowish pubescence (Fig. 12). Head and antennae yellowish brown. Pronotum, scutellum and elytra reddish brown. Underside yellowish brown except metaventrite reddish brown. Head small, 0.65 × of pronotal width (HW/PW= 0.75 / 1.15). Punctures on head finer than eye facets, separated by 1–2 diameters, with white pubescence. Eyes small, the widest interocular distance 0.47 × of head width. Pronotum 0.70 × of elytral width (PW/EW= 1.15 / 1.65), pronotal punctures larger than those on head, 1–1.5 diameters apart. Surface of elytra with densely punctures, separated by 1–2.5 diameters. Prosternal carinae extending to anterior margin, slightly convergent anteriorly. Prosternal process trapezoid, length 5.0 times of width at the base. Abdominal postcoxal lines incomplete, slightly recurved toward the base of ventrite (Fig. 28). Area surrounded by the line evenly and sparsely punctured, relatively narrowly smooth along the line. Male genitalia: Penis stout, with a developed penis capsule (Fig. 29), apex of penis forming a large hook (Fig. 30). Tegmen stout, penis guide slightly constricted near middle and converging gradually to a pointed tip in ventral view (Fig. 32). Parameres relatively broad, oblong, distinctly shorter than penis guide, apex with two groups long and uniform setae (Fig. 31). Female not examined. Type. Paratype: 1 male, Alishan, Taiwan, 2400m, 10. VI. 1977, J. Klapperich Leg / Paratype (yellow label), 910520 - 1 (hand writing) / Scymnus (Parapullus) alishanensis Pang et Yu (hand writing). Distribution. China (Taiwan).Published as part of Chen, Xiao-Sheng, Ren, Shun-Xiang & Wang, Xing-Min, 2012, Revision of the subgenus Scymnus (Parapullus) Yang from China (Coleoptera: Coccinellidae), pp. 22-34 in Zootaxa 3174 on pages 26-29, DOI: 10.5281/zenodo.27989
Axinoscymnus singaporicus Pang et Gordon 1986
No full textAxinoscymnus singaporicus Pang et Gordon, 1986 (Figs 6a–d) Axinoscymnus singaporicus Pang et Gordon, 1986: 186. Diagnosis. This species is similar to A. beneficus Kamiya in the elytral colour patterns but can be distinguished from the latter by the stout penis with blunt apex according to the illustrations given by Pang & Gordon (1986). It also resembles with A. fumatus (Sicard) in the dark brown elytra and stout penis, but can be separated from the latter by its elytra with yellowish brown basal margin (Fig. 6a). Description. TL: 1.65–1.71 mm, TW: 1.19–1.22 mm, TH: 0.88–0.92 mm, TL/TW: 1.35–1.44, EL/EW: 1.04– 1.11, PL/PW: 0.48–0.52, HW/PW: 0.67–0.69, PW/EW: 0.67–0.70. Body oval, moderately convex, dorsum with pale yellow pubescence (Figs 6a–c). Head, antennae and mouthparts yellow (Fig. 6b), tip of mandibles dark brown. Pronotum and scutellar shield yellow. Elytra dark brown, basal margin yellowish brown (Figs 6a–c). Prothoracic hypomeron and prosternum yellow. Mesoventrite and metaventrite dark brown. Elytral epipleurae black. Legs yellow. Head with fine frontal punctures, as large as eye facets, 1.0–1.5 diameters apart. Eyes densely faceted, interocular distance about 0.27 times of head width (Fig. 6b). Pronotal punctures slightly larger than those on frons, 1.0–1.5 diameters apart. Surface of elytra with punctures much larger than those on pronotum, separated by 1.0–2.0 diameters. Male genitalia. The male genitalia of the paratype we examined were lost. For detailed illustrations see Pang & Gordon (1986). Material examined. Paratypes: 2♂, on Aleyrodid, Singapore, 29. VII. 1929, No. #2407, Clausen CP leg (SCAU, Fig. 6d). Distribution. Singapore. Remark. The holotype of this species is deposited in the collection of the United States National Museum (USNM), Washington. Two paratype specimens were preserved in the collection of Department of Entomology, South China Agricultural University (SCAU). However, these two paratypes are discolored and their male genitalia were lost.Published as part of Peng, Feng, Xie, Xiufeng, Peng, Zhengqiang, Wang, Xingmin & Chen, Xiaoshen, 2022, A taxonomic review of the genus Axinoscymnus Kamiya, with descriptions of three new species (Coleoptera, Coccinellidae), pp. 431-453 in Zootaxa 5154 (4) on pages 440-441, DOI: 10.11646/zootaxa.5154.4.2, http://zenodo.org/record/665115
Axinoscymnus glotticus Ren et Pang 1992
No full textAxinoscymnus glotticus Ren et Pang, 1992 (Figs 5a–h) Axinoscymnus glotticus Ren et Pang, 1992: 22.— Pang et al. 2004: 90. Diagnosis. This species resembles A. rai Kamiya in male genitalia but can be separated from the latter by the entirely brown elytra without dark brown markings on humeral and apical parts (Fig. 5a). It is also similar to A. gongxinensis Peng et Chen, sp. n. in external appearance, but can be recognized by the different shape of the abdominal postcoxal lines (Fig. 5d) and penis guide in lateral view (Fig. 5f). Description. TL: 1.57–1.62 mm, TW: 1.06–1.10 mm, TH: 0.76–0.78 mm, TL/TW: 1.47–1.49, EL/EW: 1.08– 1.17, PL/PW: 0.52–0.57, HW/PW: 0.70–0.72, PW/EW: 0.66–0.68. Body oval, weekly convex, dorsum with pale yellow pubescence (Figs 5a–c). Head dark brown, antennae and mouthparts yellow, tip of mandibles brown. Pronotum yellow, scutellar shield dark brown. Elytra dark brown. Prothoracic hypomeron and prosternum yellow. Mesoventrite and metaventrite dark brown. Legs yellow. Head with fine and sparse frontal punctures, 2.0–2.5 diameters apart. Eye densely faceted, interocular distance about 0.33 times of head width (Fig. 5c). Pronotal punctures similar with those on frons. Surface of elytra with punctures much larger than those on pronotum, separated by 1.0–2.0 diameters. Abdominal postcoxal lines complete and moderately recurved, reaching 3/4 length of ventrite 1 (Fig. 5d), area enclosed by the lines finely and sparsely punctate, irregularly distributed, broadly smooth along the lines; ventrite 1 with coarse and irregular punctures at middle. Male genitalia. Penis short and slender, slightly broadened at base, apex pointed (Fig. 5e); tegmen with penis guide subtrapezoidal, parallel sided at basal 1/4, then strongly tapering to apex in inner view (Fig. 5g), about 3/4 length of parameres; parameres stout and elongate oval with few setae at apex in lateral view (Fig. 5f). Material examined. Holotype: male, Qianling Park, Guiyan, Guizhou, 15. VIII. 1987, Pang XF leg (SCAU, Fig. 5h). Paratype: 1♀, with same data as holotype (SCAU). Distribution. China (Guizhou). Remarks. We examined the holotype of this species, which is discolored and inconsistent with the original description in terms of body color.Published as part of Peng, Feng, Xie, Xiufeng, Peng, Zhengqiang, Wang, Xingmin & Chen, Xiaoshen, 2022, A taxonomic review of the genus Axinoscymnus Kamiya, with descriptions of three new species (Coleoptera, Coccinellidae), pp. 431-453 in Zootaxa 5154 (4) on pages 439-440, DOI: 10.11646/zootaxa.5154.4.
Asulconotoides Liu 1984
No full textKey to the species Asulconotoides 1. Male tegmen longer, reaching to or beyond the middle of epiproct................. A. asulcata (Zheng, 1988) comb. nov. –. Male tegmen shorter, reaching to the middle of hind femur or 5 th abdominal tergite................................. 2 2. Male 10 th abdominal tergite with furcula; epiproct triangular............................... A. sichuanensis Liu, 1984 –. Male 10 th abdominal tergite without furcula; epiproct tongue-shaped............. A. microptera (Zheng, 1988), comb. nov.Published as part of Mao, Ben-Yong & Huang, Zhi-Pang, 2023, Taxonomy on three allied genera within Arcypterini (Orthoptera: Acrididae) from Qinghai-Xizang Plateau, China, pp. 265-279 in Zootaxa 5239 (2) on page 273, DOI: 10.11646/zootaxa.5239.2.5, http://zenodo.org/record/762431
Sticholotis petila Yu & Pang
No full textSticholotis petila Yu & Pang (Figures 41–43, 169–173, 297) Sticholotis petila Yu & Pang in Yu et al., 1993: 467. Diagnosis. This species is very similar to S. ruficeps in dorsal color pattern, but can be distinguished by its elytra with arcuate row of large punctures at mid length near suture (Fig. 41) and distinctly different shape of the penis capsule (Fig. 170). Description. TL: 2.32–2.44 mm, TW: 1.98–2.11 mm, TH: 1.05–1.19 mm, TL/TW: 1.16–1.18; PL/PW: 0.43– 0.44; EL/EW: 0.94–0.97; HW/TW: 0.38; PW/TW: 0.63. Head reddish brown, mouthparts yellow. Pronotum reddish brown and scutellum black. Elytra dark brown, with narrow yellowish brown band along lateral margins, each elytron with two large yellowish spots, anterior very large, irregular, at middle of basal margin (touching margin), posterior small, 1/2 size of anterior spot, at apical third (Figs 41–43). Underside reddish brown, middle of meso- and metaventrite black. Legs reddish brown. Body almost circular in outline, hemispherical, shiny and glabrous. Head frontal punctures medium and densely distributed, 0.5–1.5 diameters apart, with scattered short setae, interocular distance of eyes 0.58x head width (Fig. 43). Pronotal punctures fine and conspicuous, 1.0–2.0 diameters apart, slightly smaller than those on head. Elytral punctures medium, similar to those on pronotum, 1.0–1.5 diameters apart; each elytron with arcuate row of large punctures near suture at mid length. Elytral margins wide, visible from above. Prosternal punctures inconspicuous, with long sparse setae. Mesoventral surface shagreened, punctures coarse, with scattered short setae. Metaventrite broad and slightly shagreened, flat medially, covered by coarse and dense punctures distributed at center. Elytral epipleuron broad, complete to apex, feebly foveate to accommodate femoral tips of hind legs. Wings well-developed. Male genitalia: Penis short and slender, strongly curved at base, capsule broadening basally and with a small inner process (Figs 170–171); tegmen with penis guide slightly shorter than paramere, in lateral view thin and straight; parameres very thin (Fig. 172). Female genitalia: Ovipositor elongate and narrowly triangular, styli inconspicuous (Fig. 173). Specimens examined. Holotype: 1male, China, Guangdong: Chebaling, [24°45.18′N, 114°19.67′E], ca 760m, 24.iv.1991, Yu GY leg (SCAU). China, Guangdong: 4males, 1female, Shimentai, Yingde, [24°24.36′N, 113°17.68′E], ca 460m, 7.x.2004, Wang XM leg. (SCAU); 1male, Qinshuigu, Nanling National Natural Reserve, [24°53.82′N, 113°1.35′E], ca 1400m, 29.ix.2004, Wang XM leg. (SCAU). Distribution. China: Guangdong.Published as part of Xingmin Wang, Hermes E. Escalona, Shunxiang Ren & Chen Xiaosheng, 2017, Taxonomic review of the ladybird genus Sticholotis from China (Coleoptera: Coccinellidae), pp. 1-72 in Zootaxa 4326 (1) on pages 18-19, DOI: 10.11646/zootaxa.4326.1.1, http://zenodo.org/record/99903
Dissipative Range Scaling of Higher Order Structure Functions for Velocity and Passive Scalars
No full textDifferently to Kolmogorov's second similarity hypothesis, we find that the 2n-th order velocity and scalar structure functions scale with n-th order moment of the energy dissipation and the scalar dissipation, respectively. The origins of this scaling are analyzed by the transport equations of the fourth order velocity and scalar increment moments and by direct numerical simulations
Also By The Same Author: AKTiveAuthor, a Citation Graph Approach to Name Disambiguation
No full textThe desire for definitive data and the semantic web drive for inference over heterogeneous data sources requires co-reference resolution to be performed on those data. In particular, name disambiguation is required to allow accurate publication lists, citation counts and impact measures to be determined. This paper describes a graph-based approach to author disambiguation on large-scale citation networks. Using self-citation, co-authorship and document source analyses, AKTiveAuthor clusters papers, achieving precision of 0.997 and recall of 0.818 over a test group of eight surname clusters
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