231 research outputs found
Prismosticta Wang, Huang & Wang, 2011, sp. n.
No full textPrismosticta tianpinga Wang, Huang & Wang, sp. n. (Figs. 2 –4? Type material. Holotype. Male, Tianping Mountain, Badagongshan National Nature Reserve, Zhangjiajie City, Hunan Province, China, 14.V. 2007, Liu-Sheng Chen, Zhen Li and Yang Long leg., deposited in South China Agricultural University, Guangzhou, China (SCAU). Paratype. 1 male, same data as holotype except for 6.V. 2009, Guo-Hua Huang leg., deposited in Institute of Entomology, Hunan Agricultural University, China (HUNAU). Description. Male. Forewing length 16–18 mm, antenna length 5–8 mm, bipectnate to apex (Fig. 2). Head. Frons covered with grey scales; proboscis absent; labial palpi moderately long with long brown scales. Thorax. Dorsum brown with long postmedian setae; abdomen with black scales, between thorax and abdomen with a wide light-grey band. Forewing ground color greenish brown; apex slightly falcate, apical part of the forewing with a larger triangular white hyaline dot; termen almost straight, curved near apex; antemedian and basal fasciae curved inwardly; postmedian and discocellular fasciae curved towards basal part of the forewing; discal cell with a larger dot. Anterior part of hind wing red brown, posterior part greenish brown; termen wavy; postmedian and discocellular fasciae obscure. Abdomen. Tergite VIII helmet, sternite VIII nearly rectangular (Fig. 3). Male genitalia (Fig. 4) with uncus short and robust with two sickleshaped processes, mesial uncus weakly bilobed, V-shaped; gnathos slender with mesial scobination and protruded spines; apex of valva slightly pointed, mesial valva with a nearly rectangular process; saccus broad and short; aedeagus almost straight, about 0.7 x length of valva, vesica with three cornuti. Female. Unknown. Etymology. The specific name refers to the type locality of Tianping Mountain. Remarks. The new species is similar to P. regalis in wing pattern, and to P. fenestrata in male genitalia. Distinguishing characters include: forewing greenish brown in P. tianpinga, yellowish brown in P. regalis; mesial uncus deeply bilobed, U-shaped, apex of valva truncate, mesial valva with a tongue-like process in P. fenestrata, mesial uncus weakly bilobed, V-shaped, apex of valva slightly pointed, mesial valva with a nearly rectangular process in P. tianpinga. Distributed in China (Hunan).Published as part of Wang, Xing, Huang, Guo-Hua & Wang, Min, 2011, Notes on the genus Prismosticta (Lepidoptera, Bombycidae) with description of a new species from China, pp. 65-68 in Zootaxa 2895 on pages 67-68, DOI: 10.5281/zenodo.20687
Neoperla quadrispina Li & Mo & Wang 2020, sp. nov.
No full textNeoperla quadrispina sp. nov. (Figs. 6–7) Adult habitus ( Figs. 6–7). The head pale except for yellow and dark markings: a large yellowish brown median rhombolic area interrupted by pale M-line, and the small area between two ocelli surrounded by subsquare dark brown spots, and the distance between the ocelli subequal to the diameter of a single ocellus; the antennae brown but basal segments light yellow; pronotum pale yellow with median half brown with rugosities. Legs brownish; wings light brown, veins brown; cerci pale brown. Male ( Figs. 6–7). Forewing length 8.4–8.9 mm. Hindwing length 7.0– 7.5 mm. Posterior process of tergum 7 nearly quadrate covered with dense dorsal and distal sensilla basiconica. Tergum 8 with an upward curved, tongueshaped process, with sensilla basiconica at apex. Tergum 10 with finger-like hemitergal process, medial portion distinctly curved forward, tip bluntly sharp. Aedeagal tube straight, apically with Y-shaped ventral lobe, with two black spines at the ends of each fork; the lobe generally straight and finger-like in lateral aspect.Aedeagal sac ca. 2X as long as the tube, distal two third abruptly curved ventrally, covered with many dark tiny spines at the triangular apex. Female. Unknown. Material examined. Holotype male (HIST), China: Guangxi, Guigang City, Tianping Mountain National Forest Park, 210m, 2017.VIII.3, G.Q. Wang. Paratype: 1 male (HIST) same locality and date as holotype. Etymology. The specific name “quadrispina” refers to the four apical spines of the Y-shaped lobe of the aedeagal tube. Distribution. China (Guangxi Zhuang Autonomous Region). Remarks. The Y-shaped lobe of the aedeagal tube also demonstrate its placement in the diehli subgroup, including several species mentioned above and Neoperla delphina sp. nov.. However, the two spines at the ends of each fork of the Y-shaped lobe of Neoperla quadrispina sp. nov. could distinguish it from other species in this subgroup.Published as part of Li, Weihai, Mo, Raorao & Wang, Guoquan, 2020, Two new species of Neoperla montivaga group (Plecoptera: Perlidae) from Guangxi Zhuang Autonomous Region of southern China, pp. 573-583 in Zootaxa 4718 (4) on pages 577-581, DOI: 10.11646/zootaxa.4718.4.10, http://zenodo.org/record/360259
Ripeacma bitriangulata Xu & Wang 2022, sp. nov.
No full textRipeacma bitriangulata Wang, sp. nov. (Figs 6, 18, 28) Type material. CHINA, Hainan: Holotype ♂, Hongkan (19.08°N, 100.34°E), Yinggeling, 540 m, 17.III.2016, leg. QY Wang et al., slide No. ZXJ18372. Paratypes: Hainan: 3♂ 6♀, same data as holotype except dated 15‒17.III.2016, slide Nos. LiSR16260 ♂, LJ17552 ♂, XZX20240 ♂, XZX20241 ♀, LiSR16223 ♀, LiSR16287 ♀, ZXJ18441 ♀, ZXJ19009 ♀; Guangxi : 1♀, Mt. Tianping, Huaping, Longsheng County, 767 m, 18.VIII.2020, leg. H Sun et al., slide No. XZX20249. Diagnosis. The new species can be distinguished from other described species of the genus by the juxta triangularly produced posterolaterally, the clubbed saccus, and the aedeagus with a slender process that exceeds the apex of the aedeagus. Description. Adult (Fig. 6). Wingspan 9.5 − 12.0 mm. Head yellow, sparsely tipped with greyish brown. Labial palpus in male with first palpomere black, second palpomere yellow with black scales; in female yellow, first palpomere with black scales, second palpomere ringed with black at middle and near apex.Antenna yellow on ventral surface; scape mottled with black scales and flagellum black and yellow on dorsal surface. Thorax and tegula black basally, yellow distally. Forewing yellow, with yellowish brown scales; costal margin with dense black scales along basal 1/3, forming an ill-defined band, with three black spots evenly spaced from before middle to distal 1/4; terminal dots black, running from apex along termen to tornus; discal, discocellular and plical stigmata black; tornal spot black, diffused; fringe greyish black. Hindwing and fringe grey. Legs yellow; coxa of fore- and hindlegs black on ventral surface; on dorsal surface, tibia of foreleg black, ringed with yellow at apex, tarsus black at middle of first tarsomere and at base of second tarsomere as well as on entire third and fourth tarsomeres; tibia of midleg black, with yellow streak at basal 1/3, at middle and apex, tarsus black at middle of first tarsomere and on entire other tarsomeres; all femora black; on outer surface, tibia of hindleg black, with yellow streak at middle and apex, tarsus black at base of each tarsomere. Male genitalia (Fig. 18). Uncus sub-trapezoidal, wide at base, narrowed from base to basal 2/3, contracted at distal 1/3, with a seta set laterally before contraction, distal 1/3 horizontally fusiform, extended outward from middle and narrowed to lateral margin. Gnathos as long as uncus; ventral plate composed of two spine-shaped lobes, each lobe extending horizontally outward from middle to pointed tip, concave anteromedially; basal arm widely banded, longer than width of ventral plate. Tegumen roundly arched on posterior margin, widened to posterior 3/5, with a large triangular emargination; lateral arm shorter than median width. Valva narrowly elongate, bent inward, sub-parallel sided, obtusely rounded at apex, with a line of setae running from basal 1/4 to 1/2 above ventral margin; costa banded, narrowed distally, not reaching tip of costal margin; transtilla lobes rod-shaped; sacculus less than 2/5 length of valva, triangular, heavily sclerotized and horn-shaped distally. Saccus clubbed. Juxta widened posteriorly, narrowed medially; posterior half gradually widened, posterior margin deeply concave medially, forming two triangular lobes; anterior half represented by two slender lateral bands, produced in triangle anterolaterally. Aedeagus slightly shorter than valva, slightly inflated from base to basal 2/5, then tapered to basal 2/3, distal 1/3 heavily sclerotized, produced triangularly to acute apex; with two processes: one from beyond lateral 1/3 extending dorsad and fused at its middle length, forming a spine-shaped process reaching basal 2/3 length of aedeagus; another arising from distal 1/3, slender, apically exceeding apex of aedeagus. Female genitalia (Fig. 28). Apophyses anteriores less than 1/2 length of apophyses posteriores. Eighth tergum rectangular, straight on posterior margin; eighth sternal plate concave in U shape medially on posterior margin, forming two hillock-like lobes. Lamella antevaginalis large, circular, exceeding antrum anteriorly. Antrum shorter than 1/3 length of ductus bursae, posterolaterally extended as a wide sclerotized band. Ductus bursae thickened and granulate anteriorly, narrowed near corpus bursae. Corpus bursae about 4/5 length of ductus bursae, elliptical; signum obovate, margined with dense denticles. Distribution. China (Hainan, Guangxi). Etymology. The specific epithet is derived from the Latin bi - and triangulatus, referring to the shape of the two posterior lobes of the juxta.Published as part of Xu, Zhixin & Wang, Shuxia, 2022, Description of twelve new species of the genus Ripeacma Moriuti, Saito & Lewvanich (Lepidoptera: Autostichidae) from China, pp. 521-540 in Zootaxa 5168 (5) on pages 526-527, DOI: 10.11646/zootaxa.5168.5.2, http://zenodo.org/record/691144
Motivate the intrest of college student to participate in physical exercise
No full textWith the development of society and economy, when people meet their needs, they also need to improve their quality of life. Taking part in physical exercise is not only to satisfy people's needs, but also to improve their quality of life. However, author observes that the present situation is that college students are addicted to the Internet and do not want to take part in physical exercise. This paper is about stimulating the interest of college physical training, advising the school take different measures for different types of people. The aim is make more college students take part in physical exercise.
The author hopes to find ways to enable college students to take an active role in physical exercise. The author also investigated 105 students from Guangzhou polytechnic of sports. Study show that although most students like physical training, some students are passive in physical exercis
Universal Approximation to Nonlinear Operators by Neural Networks with Arbitrary Activation Functions and Its Application to Dynamical Systems
No full textThe purpose of this paper is to investigate neural network capability systematically. The main results are: (1) Every Tauber-Wiener function is qualified as an activation function in the hidden layer of a three-layered neural network; (2) For a continuous function to be a Tauber-Wiener function, the necessary and sufficient condition is that it is not a polynomial; (3) The capability of approximating nonlinear functionals defined on some Banach space and nonlinear operators has been shown, which implies that (4) we can use neural network computation to approximate the output as a whole (not at a fixed point) of a dynamical system. Key words: Approximation theory, neural networks, dynamical systems, compact set, functional, operator. 1 The author is with the Department of Mathematics, Fudan University, Shanghai, P.R.China. 2 The author was with the Department of Electrical Engineering, University of Notre Dame, Notre Dame, Indiana 46556, USA. He is now with VLSI Libraries, Inc., 183..
Adaptive Tracking Control of a Single-Link Flexible Robotic Manipulator System with Unmodeled Dynamics and Motion Constraint
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