30,781 research outputs found
CHUN-LIN HU & JIN-HUA DING (2014) A new species of Neobelocera Ding & Yang (Hemiptera Delphacidae: Delphacinae: Tropidocephalini) from China, with a key to species of the genus. Zootaxa,
No full textHu, Chun-Lin, Ding, Jin-Hua (2014): CHUN-LIN HU & JIN-HUA DING (2014) A new species of Neobelocera Ding & Yang (Hemiptera Delphacidae: Delphacinae: Tropidocephalini) from China, with a key to species of the genus. Zootaxa,. Zootaxa 3790 (3): 500-500, DOI: http://dx.doi.org/10.11646/zootaxa.3790.3.
Iterative regularization for learning with convex loss functions
No full textWe consider the problem of supervised learning with convex loss functions and propose a new form of iterative regularization based on the subgradient method. Unlike other regularization approaches, in iterative regularization no constraint or penalization is considered, and generalization is achieved by (early) stopping an empirical iteration. We consider a nonparametric setting, in the framework of reproducing kernel Hilbert spaces, and prove consistency and finite sample bounds on the excess risk under general regularity conditions. Our study provides a new class of efficient regularized learning algorithms and gives insights on the interplay between statistics and optimization in machine learning. ©2016 Junhong Lin, Lorenzo Rosasco and Ding-Xuan Zhou
The mitochondrial genome of Calohilara tibetensis Ding, He, Lin, and Yang, 2020 (Diptera: Empididae)
No full textThe dance fly Calohilara tibetensis Ding, He, Lin and Yang, 2020 belongs to the subfamily Empidinae of Empididae. The mitochondrial genome of C. tibetensis was sequenced as the new representative of the subfamily Empidinae. The nearly complete mitogenome was 15,354 bp, consisting of 13 protein-coding genes, two rRNAs, and 22 tRNAs. All genes have the similar locations and strands with that of other published species of Empididae. The nucleotide composition biases toward A and T is 77.4% of the entirety. All PCGs start with ATN codons except COI and NAD1, and end with TAA or incomplete stop codon. Bayesian inference (BI) analysis strongly supported the monophyly of both Empididae and Dolichopodidae and the monophyly of subfamily Empidinae. It suggested that Calohilara is the sister group of Hilara
DePaul Digest - Moments - Margaret Hie Ding Lin Park
No full textPhoto spread of Chicago’s Margaret Hie Ding Lin Park, which DePaul renovated to celebrate the the university’s 125th anniversary and commitment to community service
A new species of Longtania Ding from China and redescription of the male genitalia of Platytibia ferruginea Ding (Hemiptera: Fulgoromorpha: Delphacidae)
No full textQin, Dao-Zheng, Zhang, Ya-Lin (2009): A new species of Longtania Ding from China and redescription of the male genitalia of Platytibia ferruginea Ding (Hemiptera: Fulgoromorpha: Delphacidae). Zootaxa 1979: 62-68, DOI: 10.5281/zenodo.18523
Neobelocera Ding & Yang 1986
No full textGenus Neobelocera Ding & Yang, 1986 Type species: Neobelocera asymmetrica Ding & Yang, 1986 (original designation). Diagnosis The genus Neobelocera is easily distinguished from other genera of Tropidocephalini by the following combination of characters: antennae with first segment subsagittate, markedly flattened, a longitudinal carina down middle, the ventral apical angle longer than dorsal apical angle (Figs 1E, 2B, 3E, 4B); when postclypeus viewed in profile, apical part of median carina bent at rounded angle, not at right angle (Figs 1D, 3D) (Hou & Chen 2010; Hu & Ding 2014). Host plant Bamboo. Distribution Oriental region (China).Published as part of LI, Hong-Xing, Yang, Lin & Chen, Xiang-Sheng, 2020, Two new species of the bamboo-feeding planthopper genus Neobelocera Ding & Yang, 1986 from China (Hemiptera, Fulgoroidea, Delphacidae), pp. 1-14 in European Journal of Taxonomy 641 on page 3, DOI: 10.5852/ejt.2020.641, http://zenodo.org/record/381711
Bambusiphaga Huang & Ding 1979
No full textBambusiphaga Huang & Ding, 1979 Bambusiphaga Huang & Ding, 1979: 170; Asche, 1983: 211; Ding & Tian, 1983 (in Kuoh et al. 1983): 49; Yang & Yang, 1986: 37; Wang & Ding, 1996: 22; Ding et al., 1999: 441; Ding, 2006: 126; Chen & Liang, 2007: 504; Hou & Chen, 2010: 392. Type species. Bambusiphaga nigropunctata Huang & Ding, 1979, by original designation. Diagnosis. Head including eyes narrower than pronotum. Vertex quadrate or rectangular, with submedian carinae uniting at apex of vertex. Frons rectangular, longer at middle line than wide (1.64–2.7: 1), median carina distinct and simple. Antennae cylindrical, basal segment slightly longer or equal to width, 2 nd segment longer than 1 st (more than 2.7: 1), reaching or almost reaching frontoclypeal suture. Pronotum about as long as vertex, lateral carinae straight, reaching or almost reaching hind margin. Mesonotum longer at middle line than vertex and pronotum together (about 1.3 –2.0: 1). Spinal formula of hind leg 5-6 - 4. Post-tibial spur without teeth along posterior margin, but with an apical tooth. Forewings with cross vein deposited medially. Anal style small. Anal segment of male ring-like, ventral margin with or without a process. Pygofer with or without medioventral processes. Aedeagus with or without phallobase; phallus complex, tubular. Genital styles simple, with a process, or forked apically. Seventh abdominal sternite of female present or absent. Host plants. Bamboo (Bambusoideae). Specimens of Bambusiphaga species were collected on leaves of bamboo in several genera, viz. Bambusa, Dendrocalamus, Sinocalamus, Neosinocalamus, and Phyllostachys (Huang et al. 1979; Ding & Hu 1982; Ding et al. 1986; Yang & Yang 1986; Chen & Li 2000; Chen et al. 2000; Chen & Liang 2007). Distribution. Oriental region, with highest species density in China.Published as part of Yang, Lin & Chen, Xiang-Sheng, 2011, The Oriental bamboo-feeding genus Bambusiphaga Huang & Ding, 1979 (Hemiptera: Delphacidae: Tropidocephalini): a checklist, a key to the species and descriptions of two new species, pp. 50-59 in Zootaxa 2879 on pages 50-59, DOI: 10.5281/zenodo.20602
Aspidistra albovillosa T. Ding, B. Pan & C. R. Lin 2023, sp. nov.
No full text<i>Aspidistra albovillosa</i> T. Ding, B. Pan & C.R. Lin, <i>sp. nov.</i> (Figs. 1, 2) <p> <b>Type:</b> — China. Guangxi, Luizhou City, Luijiang District, Luoman Town, Qiaomu Village, in the crevices of the stones on shady, at the foot of the limestone hill, not common, 109°11’ E, 24°22’ N, alt. 130 m, 27 April 2023, <i>Tao Ding</i> & <i>Bo Pan 2703</i> (holotype: IBK!, Isotype: IBK!).</p> <p> <b>Diagnosis:</b> —The new species is morphologically similar to <i>A. ovatifolia</i>, but clearly distinguished by its perianth lobes basely with purplish red appendages, which sometimes white and slightly rolled upwards at apex, tube adaxially densely with white villous, stigma slightly undulate and 6 (or 8) lobed at margin.</p> <p> <b>Herbs</b> perennial, evergreen, rhizomatous. <b>Rhizome</b> creeping, subterete, 6–8 mm thick, covered with scales, nodes dense. <b>Roots</b> numerous. <b>Vagina</b> leaves 4–5, purple-red, 1–10 cm long, enveloping base of petiole, becoming blackbrown when dry. <b>Leaves</b> solitary, ca. 1cm apart; <b>petiole</b> stiff, upright, 12–24 cm long, 2–3 mm thick, adaxially sulcate; <b>leaf blade</b> broad ovate to ovate, 14–17 cm long, 8–13 cm wide, dark green, base cordate to suborbicular, abruptly narrow into petiole, inequilateral, apex cuspidate to acuminate, margin entire. <b>Peduncle</b> decumbent, pale green slightly with purplish red spots, 2–4 cm long, with 4–5 bracts, terminal 1 or 2 close to flower; the <b>bracts</b> at the base of perianth broadly ovate, white with purple spots, ca. 8–10 mm long, 10–12 mm wide, apex subobtuse. <b>Flowers</b> solitary at the top of the peduncle; <b>perianth</b> urceolate, fleshy, slightly 6 (or 8) lobed apically; <b>lobes</b> suberect, triangular, 2–3 mm long and 2–4 mm wide at base, abaxially whitish and slightly purplish mottled, adaxially pale yellow, densely with purplish red speckles at base, each lobe basally with an adaxial, purplish red, toothlike appendage, ca. 2 mm long, 2–4 mm wide, apex with 2–3 denticulate, and sometimes white, slightly rolled upwards, appendages protruding horizontally or obliquely over tube opening and reducing the opening to 2–4 mm; <b>tube</b> 8–10 mm long, greatest 12–15 mm in diam., abaxially white and sometimes slightly with purplish red spots, adaxially deep purple to nearly purplish black, densely white villous. <b>Stamens</b> 6 (or 8), opposite to lobes, inserted at ca. 2mm from the base of perianth tube, positioned conspicuously lower than stigma; <b>anther</b> subsessile, ovate, ca. 2 mm long and ca. 1 mm wide, pollen yellow; <b>Pistil</b> 7–8 mm long, <b>ovary</b> indistinct, <b>style</b> cylindrical, ca. 2 mm long, <b>stigma</b> peltate, enlarge, round, 10–12 cm in diam., 5–6 mm high, upper surface yellow to yellowish white, glabrous, the central part slightly convex with 3 or 4 radial, 2–3 forks lines, <b>slightly</b> undulate and 6 (or 8) lobed at margin, lower surface dark purplish red, with 12 (or 16), alternating large and small longitudinal ribs. Flowering from April to May.</p> <p> <b>Etymology:—</b> The specific epithet ‘ <i>albovillosa</i> ’ is derived from the perianth tube adaxially densely with white villous. The Chinese name is given as ‘ <b>ǝfflÑṞffifi</b> ’(Chinese pinyin: bái máo zhî zhű bào dàn).</p> <p> <b>Distribution and ecology:</b> — <i>Aspidistra albovillosa</i> is currently only known from the type locality in Luijiang District, central Guangxi, China. It grows under broad-leaved evergreen forests, in shaded rocky limestone slopes at elevation range of 120– 240 m. Living plants introduced from the type locality are currently cultivated in Guilin Botanical Garden of Guangxi Institute of Botany.</p> <p> <b>Conservation status:</b> — In the field investigations, <i>Aspidistra albovillosa</i> was only found from the type locality with one populations with about 80 individuals. All discovered individuals were occurring in the natural scenic spot, where the habitat was in good condition. The further detailed investigation of the same habitats is also needed to give a better understanding of its natural distribution and abundance, and the status of new species is currently considered as Data Deficient (DD), following the IUCN Red List Categories and Criteria (IUCN 2022).</p> <p> <b>Similar species:—</b> <i>Aspidistra albovillosa</i> is similar to <i>A. ovatifolia</i> Yan Liu & C. R. Lin in Lin <i>et al.</i> (2014: 287, Fig. 3) in the urceolate perianth and ovate leaf blade, but differs by the widerleaf blades (8–13 cm vs. 6–9.5 cm wide), the purplish red (vs. pure white) and slightly rolled upwards at apex (vs. flat) appendages at the base of the perianth lobes, surface of the perianth tube (adaxially densely villous vs. with 8 longitudinal grooves), thre ovate (vs. oblong) anther, structure of the stigma (margin slightly undulate and 6 (or 8) lobed vs. margin bent upwards, with 16 longitudinal ribs). A detailed morphological comparison between the two species is provided in Table 1.</p>Published as part of <i>Ding, Tao, Pan, Bo & Lin, Chun-Rui, 2023, Aspidistra albovillosa (Asparagaceae), a new species from Guangxi, China, pp. 244-250 in Phytotaxa 620 (3)</i> on pages 245-248, DOI: 10.11646/phytotaxa.620.3.5, <a href="http://zenodo.org/record/10012445">http://zenodo.org/record/10012445</a>
sj-docx-1-ijb-10.1177_13670069221111861 – Supplemental material for Rethinking marginalization and heritage language vitality in multilingual families
No full textSupplemental material, sj-docx-1-ijb-10.1177_13670069221111861 for Rethinking marginalization and heritage language vitality in multilingual families by Seong Lin Ding in International Journal of Bilingualism</p
Revisiting the "Irtish tectonic belt": Implications for the Paleozoic tectonic evolution of the Altai orogen
No full textAbstract not availableChuan-Lin Zhang, M. Santosh, Hai-Bo Zou, Yi-Gang Xu, Gang Zhou, Yong-Guan Dong, Ru-Fu Ding, Hong-Yan Wan
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