33,592 research outputs found
Zhang Zhouxuan 張冑玄 († entre 605 et 617) (Defu 德符) – Astronome des Sui
No full textInternational audienceDaniel P. Morgan, « Zhang Zhouxuan 張冑玄 († entre 605 et 617) (Defu 德符) – Astronome des Sui », dans Dictionnaire biographique du haut Moyen Âge chinois, François Martin et Damien Chaussende (éd.), Paris, Les Belles Lettres, 2020, p. 625-627
Zhang Zhouxuan 張冑玄 († entre 605 et 617) (Defu 德符) – Astronome des Sui
No full textInternational audienceDaniel P. Morgan, « Zhang Zhouxuan 張冑玄 († entre 605 et 617) (Defu 德符) – Astronome des Sui », dans Dictionnaire biographique du haut Moyen Âge chinois, François Martin et Damien Chaussende (éd.), Paris, Les Belles Lettres, 2020, p. 625-627
Zhang Zhouxuan 張冑玄 († entre 605 et 617) (Defu 德符) – Astronome des Sui
No full textInternational audienceDaniel P. Morgan, « Zhang Zhouxuan 張冑玄 († entre 605 et 617) (Defu 德符) – Astronome des Sui », dans Dictionnaire biographique du haut Moyen Âge chinois, François Martin et Damien Chaussende (éd.), Paris, Les Belles Lettres, 2020, p. 625-627
Zhang Zhouxuan 張冑玄 († entre 605 et 617) (Defu 德符) – Astronome des Sui
No full textInternational audienceDaniel P. Morgan, « Zhang Zhouxuan 張冑玄 († entre 605 et 617) (Defu 德符) – Astronome des Sui », dans Dictionnaire biographique du haut Moyen Âge chinois, François Martin et Damien Chaussende (éd.), Paris, Les Belles Lettres, 2020, p. 625-627
A New Proportional-Integral Guidance Law
No full textThis paper proposes a new proportional-Integral (PI) guidance law for maneuvering targets interception. We first investigate the physical interpretation of the PI guidance law and the analysis results reveal that the PI guidance law is exactly the same as a direct model reference adaptive guidance law: the integral term in PI control plays the same role as the adaptive law in adaptive control. Based on this fact, we suggest a new PI guidance law by leveraging a modified reference model to improve the transient performance. Numerical simulation results are conducted to validate the analytic findings
Sinojassus loberus Dai, Zhang and Zhang, sp. nov.
No full textSinojassus loberus Dai, Zhang and Zhang sp. nov. Figs 1, 4, 7, 14– 27. Male 4.8–5.7mm long, 1.8 –2.0mm wide across eyes and 2.3–2.5mm wide across hind margin of pronotum. Female 5.9 –6.0mm long, 2.0mm wide across eyes and 2.5mm wide across hind margin of pronotum. Proportion of width of head including eyes to hind margin of pronotum is 0.78–0.8. Forewing with base of clavus and appendix piceous. Hind femur piceous. Male genitalia: Pygofer caudal margin with small lobe ventrally directed medially and covered with spicules; caudo-dorsal margin convex, with many macrosetae on caudal half. Subgenital plates short, triangular, tapered to apex, with several hair-like setae on lateral margins and many short setae at apex. Style elongate, basal arm produced anteriorly, apophysis tapered to acutely pointed apex, bent at obtuse angle at distal 0.35. Aedeagus with well developed dorsal apodeme, preatrium short, rounded, lobe-like; shaft in lateral view widest at midlength, then tapered to apex, curved dorsally, with spicules preapically. Female genitalia: Seventh sternite twice as long as sixth, hind margin slight roundly concave. Material examined. Holotype 3, China, Zhejiang Prov., Wuyanling, 800m, 7 Aug. 2007, Zhang Xinmin. Paratypes: China, 13, Guizhou Prov., Fanjingshan, Heiwan river, 600m, 27 July 2001, Sun Qiang; 13, Guangxi Prov., Napo, Defu, 1350 m, 19 June 2000, Zhu Chaodong. Other material: China, 13, 1Ƥ, Zhejiang Prov., Gutianshan, 333m, 17-19 Aug. 2003, Dai Wu; 1 Ƥ, Hainan Prov., Jianfengling, 940m, 4 Sep. 2007, Duan Yani; 1 Ƥ, Zhejiang Prov., Longquan county, Fengyangshan, 1700m, 31 July 2007, Zhang Xinmin; 1 Ƥ, Zhejiang Prov.,Tianmushan, Xianrending, 7 Aug. 2007, Zhang Xinmin (All in NWAFU). Remarks. This species can be easily recognized by the piceous base of the clavus and appendix of the forewing, the triangular subgenital plates, the more acutely pointed apophysis of the style, the apex of the aedeagal shaft and the presence of a small lobe on the caudal margin of the male pygofer. Etymology. The species is named for the small ventral lobe of the male pygofer.Published as part of Dai, Wu, Zhang, Xinmin & Zhang, Yalin, 2010, A new Oriental genus of Iassini leafhoppers (Hemiptera: Cicadellidae: Iassinae) with description of four new species, pp. 15-26 in Zootaxa 2641 on page 18, DOI: 10.5281/zenodo.19859
Pythamus rufus Wang & Zhang, 2015, sp. n.
No full textPythamus rufus sp. n. (Figs 11–19) Description. Body length (including forewing): ♂, 6.7 mm. Crown (Figs 11, 13) with red markings at lateral carina and submarginal carina. Median longitudinal carina of frontoclypeus is lamellate in upper half (Figs 12, 13). Forewing (Figs 11, 12) brown and translucent, marked with dark chocolate brown stripes in middle and end part, and two white semicircular spots on outer and inner margins respectively. Male pygofer (Fig. 18) posteriorly narrowed along with caudo-ventral margin. Pygofer ventral process (Fig. 18) rather straight, slightly longer than pygofer, with about 5 toothed process distally. Aedeagus (Figs 16, 17) with bilobed apodeme arising from atrium and extended dorsolaterad; shaft recurved dorsally, apex hooked, subapex with a pair of lateral conical processes; gonopore apical. Style (Fig. 19), with footlike apex of apophysis having elongated lateral angle, apodeme apex acute. Subgenital plate (Fig. 15) elongate. Type material. Holotype: ♂ (NWAFU), China, Guangxi Province, Napo Defu Natural Reserve, 1400 m, 7.viii. 2013, Qingquan Xue. Etymology. The specific epithet “ rufus ”, meaning red, refers to the red lateral markings on crown.Published as part of Wang, Yang & Zhang, Yalin, 2015, Two new species in the leafhopper genus Pythamus Melichar (Hemiptera: Cicadellidae: Evacanthinae) from China, pp. 429-436 in Zootaxa 4058 (3) on page 435, DOI: 10.11646/zootaxa.4058.3.9, http://zenodo.org/record/23524
†Chuchinolepididae Zhang 1978
No full textFamily †Chuchinolepididae Zhang 1978, spelling in prevailing recent practice †Chuchinolepidae Zhang 1978a: 296 (family) † Chuchinolepis Zhang 1978 [family name also seen as †Chuchinolepididae; author also seen as Chang] †Qujinolepidae Zhang 1978b: 173 (family) † Qujinolepis Zhang 1978 [family name sometimes seen as † Qujinolepididae] †Procondylolepidae Zhang 1984: 82 (family) † Procondylolepis Zhang 1984Published as part of Laan, Richard Van Der, 2018, Family-group names of fossil fishes, pp. 1-167 in European Journal of Taxonomy 466 on page 27, DOI: 10.5852/ejt.2018.466, http://zenodo.org/record/555755
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