74,956 research outputs found
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
Complete solo piano works of Zhou Long
No full textAccess to thesis restricted until 07/2023.Zhou Long is a contemporary composer of Chinese American descent, who
belongs to a generation of Chinese composers that began introducing traditional
Chinese music to western audiences. He gained international recognition after
receiving the 2011 Pulitzer Prize for his opera, Madame White Snake (2011). Very
few performances, recordings, and publications currently exist on Zhou’s piano
music, and this doctoral lecture recital is the first time an artist has performed the
complete collection of Zhou’s solo piano pieces. The pieces include: Mongolian Folk-
Tune Variations, Wu Kui, Pianogongs, and Pianobells. In his piano music, Zhou
makes use of unconventional extended piano techniques, imitates and evokes Chinese
traditional instruments, and likes to make connections with other art genres. Also, the
prominence of percussive elements in Zhou’s music is of a great importance. In this
lecture recital, the author has mainly focused on 1) the background information of
Zhou Long and his solo piano works; 2) the influence of Chinese traditional
instruments, ancient literatures and aesthetic concepts, in addition to folk elements on
his piano music; 3) how the composer combined those elements with western music
and compositional skills; and 4) the exploration of the percussive usage of the piano
along with various sound effect. Much of the discussion were from the author’s own
observations; it also include insights from an interview the author conducted with the
composer. Through the combined presentation of the lecture and performance of Zhou
Long’s four piano pieces, the author intended to help bring exposure to his piano
works, and to serve as a guide for piano students and teachers interested in exploring
Zhou’s piano music.Thesis (D.A.
Perenniporia subrhizomorpha Tian & Liu & Zhou & Wang & Zhou 2021, sp. nov.
No full textPerenniporia subrhizomorpha Xue W. Wang, L.W. Zhou & X.M. Tian, sp. nov. (Figs. 2 & 3) MycoBank: MB 841348. Etymology:— subrhizomorpha (Lat.), refers to the similarity to Perenniporia rhizomorpha. Diagnosis:— Perenniporia subrhizomorpha is similar to P. rhizomorpha by having cream-colored rhizomorphs and similar pores (4–6 per mm), but differs in its wider generative hyphae and truncated basidiospores. Holotype:— CHINA. Hebei Province: Baoding, Laishui County, Yesanpo Bailixia Scenic Spot, on fallen branch of angiosperm, 23 July 2019, Li-Wei Zhou, LWZ 20190723-10 (HMAS!). Description:— Basidiomes annual, resupinate, adnate, papery, soft when fresh, becoming corky upon drying. Pore surface white when fresh, cream to buff upon drying; pores angular, 4-6 per mm; dissepiments thin, entire. Sterile margin thinning, white, up to 2 mm wide, usually with white to cream-colored rhizomorphs. Context cream, thin, up to 0.2 mm thick. Tubes concolorous with pore surface, corky, up to 0.6 mm long. Hyphal system dimitic; generative hyphae with clamp connections, slightly cyanophilous; skeletal hyphae cyanophilous; tissue unchanged in KOH. Generative hyphae in context infrequent, difficult to find, hyaline, thin-walled, unbranched, 4–5 μm diam, usually encrusted with crystals; skeletal hyphae in context dominant, hyaline, thick-walled with a distinct lumen, branched, interwoven, 3–4 μm diam. Generative hyphae in trama infrequent, difficult to find, hyaline, thin-walled, unbranched, 3.5–4.5 μm diam; skeletal hyphae in trama dominant, hyaline, thick-walled with a distinct lumen, branched, interwoven, 2–3 μm wide. Dendrohyphidia present at the dissepiments. Cystidia and cystidioles absent. Basidia clavate, with four sterigmata and a basal clamp connection, 17–20 × 9–10 μm; basidioles in shape similar to basidia but slightly smaller. Basidiospores ellipsoid to broadly ellipsoid, truncate, hyaline, thick-walled, smooth, dextrinoid, cyanophilous, (5.6–)5.7–6.5(–7.6) × (4.2–)4.3–5.5(–5.8) μm, L = 6.2 μm, W = 4.8 μm, Q = 1.26–1.29 (n = 60/2). Additional specimen (paratype) examined:— CHINA. Beijing: Fangshan District, Shangfangshan National Forest Park, on fallen trunk of angiosperm, 22 July 2019, Li-Wei Zhou, LWZ 20190722-36 (HMAS!).Published as part of Tian, Xue-Mei, Liu, Shi-Liang, Zhou, Lin-Jiang, Wang, Xue-Wei & Zhou, Li-Wei, 2021, Perenniporia subrhizomorpha sp. nov. (Polyporales, Basidiomycota) from North China, pp. 125-132 in Phytotaxa 528 (2) on page 129, DOI: 10.11646/phytotaxa.528.2.5, http://zenodo.org/record/577872
Hemiphyllodactylus huishuiensis Yan, Lin, Guo, Li & Zhou, 2016, sp. nov.
No full textHemiphyllodactylus huishuiensis sp. nov. Huishui Slender Gecko Fig. 2 Holotype. Adult male (NJNUh00851) collected on 9 July, 2015 by Yubo Lin and Hao Li in the vicinity of Huishui County, Guizhou Province, China (26 °08.36’N, 106 ° 39.72 ’E, at an elevation of 990 m). Paratype. Four adult female specimens: NJNUh00852, NJNUh00854, NJNUh00855, and NJNUh00856, collected on 10–11 July, 2015 from almost the same locality as the holotype; and three adult specimens, NJNUh00857 (female), NJNUh00858 (female) and NJNUh00859 (male), collected on 13–14 July, 2015 from Ziyun County, Guizhou Province, China (25 ° 45.17 ’N, 106 °04.85’E, at an elevation of 1260 m). Diagnosis. Hemiphyllodactylus huishuiensis sp. nov. can be distinguished from the remaining congeners of the genus Hemiphyllodactylus by having the unique combination of the following characters: a bisexual taxon; a maximum SVL of 47.4 mm in males and 51.2 mm in females; 8 or 10 chin scales; enlarged postmental scales; 3 circumnasal scales; 2 or 3 scales between supranasals; 9–11 supralabials; 9–11 infralabials; 13–15 dorsal scales; 7– 9 ventral scales; a lamellar hand formula of 3-4 - 4 - 4 or 4 - 4 / 5 - 5 - 4; a lamellar foot formula of 4 - 4 / 5 - 5 - 4 / 5; 3 subdigital lamellae on the first finger; 3 subdigital lamellae on the first toe; a continuous precloacal and femoral pore series of less than 20; one cloacal spur on each side in both males and females; no enlarged subcaudal scales; dark dorsal transverse blotches; dark postorbital stripe; a brown postsacral mark bearing anteriorly projecting arms; and unpigmented caecum and gonads (Table 4). Description of holotype. Body compressed, size small SVL 42.6 mm, tail regenerated (TailL 4.2 + 19.8 mm), trunk length (TrunkL) 20.5 mm; head longer than wide (HeadL 9.5 mm, HeadW 7.8 mm); eye diameter (EyeD) 2.7 mm; snout-eye length (SnEye) 3.9 mm; nare-eye length (NarEye) 2.8 mm; internarial distance (SnW) 1.3 mm; ear opening distance (EarD) 0.5 mm. Proportions: TrunkL/SVL 48.1 %, HeadL/SVL 22.3 %, HeadW/SVL 18.2 %, HeadW/HeadL 81.5 %, SnEye/HeadL 41.4 %, NarEye/HeadL 29.2 %, EyeD/HeadL 28.3 %, SnW/HeadL 12.7 %, EyeD/NarEye 96.8 %, SnW/HeadW 15.6 %. Scalation. Pupil vertical; supralabials 11 / 11, enlarged from rostral to below eye, smaller in subocular rictus; three circumnasal scales and three scales between supranasals; mental triangular; larger than first infralabial; infralabial 11 / 11; two postmentals, distinctly enlarged, in contact with each other medially, with mental and first infralabials anteriorly; 10 chin scales; dorsal scale granular, in 14 rows at midbody on dorsum (contained within one eye diameter), ventral scales larger than dorsal scales, in 9 rows at midbody on venter (contained within one eye diameter); one cloacal spur on each side; precloacal and femoral pore series continuous, 20 in total; all digits except digit I well developed; digit I vestigial, clawless; three transversely expanded lamellae on digit I (of both forefoot and hindfoot); one triangular lamellae on the distal end of each of the digits II–V of forefoot and hindfoot, digital formulae 3-4 - 4 - 4 (forefoot) and 4-5 - 5 - 5 (hindfoot) (Table 6). Species 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Hemiphyllodactylus huishuiensis - sp. nov. (KU 519707 - 11) H. aurantiacus (JN 393933) 30.5-30.9 - H. banaensis (KF 219783) 16.0- 16.4 3 0.2 - H. changningensis (KP 732436) 26.1-26.4 2 7.2 2 6.9 - H. chiangmaiensis (KF 219782) 26.1-26.6 2 8.0 2 5.6 1 9.1 - H. dushanensis (FJ 971016) 6.6-7.1 3 1.6 1 7.4 2 5.1 2 7.2 - H. engganoensis (KF 219776) 29.3 -30.0 32.0 31.3 27.9 28.3 29.5 - H. ganoklonis (JN 393950) 31.0- 31.3 27.2 30.7 28.1 28.8 30.3 22.7 - H. harterti (KF 219760) 31.8-32.2 35.7 32.7 30.8 30.2 31.8 31.8 30.1 - . H. jinpingensis (FJ 971041) 25.4-25.9 25.4 27.5 17.5 14.8 25.9 27.8 27.4 30.5 - . H. kiziriani (KJ 676800) 20.5-21.2 27.6 22.7 25.9 27.5 20.6 29.9 30.8 32.3 28.1 - . H. longlingensis (FJ 971046) 28.6 -29.0 25.0 30.3 18.4 18.7 29.5 28.3 28.8 32.7 18.5 27.7 - . H. titiwangsaensis (KF 219785) 30.3-31.3 29.0 29.3 27.8 30.0 30.0 30.3 29.6 25.4 28.1 32.5 28.6 - . H. typus (GQ 257745) 29.0- 29.8 26.5 31.7 29.3 27.7 30.1 19.5 19.0 31.1 28.3 28.8 27.9 29.8 - . H. yunnanensis (FJ 971021) 20.5 -21.0 27.9 22.0 23.9 25.0 21.0 28.3 27.9 29.8 25.6 20.7 26.4 29.5 27.9 - . H. zugi (KF 575152) 7.3-7.8 30.9 16.2 25.5 26.7 5.9 30.4 31.9 31.4 25.8 20.5 30.4 30.7 31.0 21.2 - . H. sp. nov. 8 (JN 393949) 27.5-27.9 23.7 27.3 20.3 14.4 27.9 28.2 27.0 31.1 13.2 28.2 18.9 28.4 27.2 25.7 28.1 - . H. sp. nov. 9 (JN 393935) 28.3-28.6 21.7 27.3 27.8 26.5 29.3 32.0 30.3 31.0 26.6 27.4 28.6 30.0 30.8 27.1 29.0 26.9 - ……continued on the next page Holotype Paratype NJNUh00851 NJNUh00859 NJNUh00852 NJNUh00854 NJNUh00855 NJNUh00856 NJNUh00857 NJNUh00858 Holotype Paratype Coloration in preservation. Dorsal surface of head and body brown, darker on body; dorsal surface of the tail yellowish grey with several transverse brown bands, while the regenerated tail dark brown; at the base of the tail, white inconsecutive V- or U-shaped arms stretching forward; dorsal surface of limbs brown similar to head with weak, dark mottling; faint, diffuse dark stripe on lateral head, from the posterior corner of the orbit to neck, edged above by a narrow white stripe; ventral surface of the head and limbs cream grey and the body light brown. Variation. Measurements and scalation characters of the paratypes are presented in Table 5 and Table 6. The scale counts vary among the type series: scales between supranasals 2 or 3; supralabials and infralabials 9–11; dorsal scale rows at midbody 13–15, and ventral scale rows at midbody 7–9; precloacal and femoral pores 0–20. Etymology. This specific epithet is derived from the name of Huishui County of China and is in reference to the type locality. Natural history. Huishui County is located in the central and southern part of Guizhou Province, with an average elevation of 1100 m. These specimens were collected in the evening on the walls of the village houses. Three female paratypes (NJNUh00852, NJNUh00854 and NJNUh00855) were gravid with two shelled eggs each. Distribution. The species is currently known only from Huishui County and Ziyun County in southern Guizhou Province, Southwest China (Fig. 3). Morphological comparisons. We compared the undescribed gecko species from southern Guizhou Province with selected members of the genus Hemiphyllodactylus based on examination of specimens and data obtained from the literature (Zhou et al. 1981 with English translation of Ota 1996; Zug 2010; Grismer et al. 2013, 2014; Nguyen et al. 2013, 2014; Ngo et al. 2014; Guo et al. 2015). Diagnostic characters separating this species from other nominal taxa of Hemiphyllodactylus are shown in Table 4. Hemiphyllodactylus huishuiensis sp. nov. differs from H. chiangmaiensis Grismer, Wood & Cota; H. jinpingensis; H. kiziriani Nguyen, Botov, Le, Nophaseud, Bonkowski & Ziegler; H. longlingensis Zhou & Liu; H. yunnanensis; H. zugi and H. changningensis Guo, Zhou, Yan & Li in having a maximum SVL of 51.2 mm vs. a SVL 17 dorsal scales, and from H. kiziriani and H. zugi additionally by having 7–9 vs.> 11 ventral scales. Hemiphyllodactylus huishuiensis sp. nov. has a lamellar hand formula of 3-4 - 4 - 4 or 4 - 4 / 5 - 5 - 4 which separates chiangmaiensis (3 - 3 - 3 - 3 or 3-4 - 3 - 3) and H. changningensis (3 - 3 / 4 - 3 / 4 - 3), and a lamellar foot formula of 4 - 4 / 5 - 5 - 4 / 5 which separates chiangmaiensis (3 - 3 - 3 - 3 or 3-4 - 4 - 4); H. jinpingensis (4 - 4 - 4 - 4) and H. changningensis (3 - 3 - 3 - 3 or 3-4 - 4 - 4). Subdigital lamellae on first finger/toe can further differentiate Hemiphyllodactylus huishuiensis sp. nov. from H. banaensis; H. jinpingensis; H. kiziriani; H. longlingensis; H. yunnanensis and H. zugi, 3 vs. 4–6. Hemiphyllodactylus huishuiensis sp. nov. can also be separated from H. banaensis; H. chiangmaiensis; H. kiziriani; H. longlingensis and H. zugi by having no light postorbital stripe. From H. dushanensis, Hemiphyllodactylus huishuiensis sp. nov. differs by the coloration of the dorsal surface of the body (brown with dark transverse stripes vs. unicolor light brown in H. dushanensis); having less subdigital lamellae on first finger (3 vs. 4–5 in H. dushanensis) and first toe (3 vs. 5–6 in H. dushanensis); less precloacal and femoral pores (usually <20 vs. 24–26 in H. dushanensis), and having dark postorbital stripe (vs. light postorbital stripe in H. dushanensis).Published as part of Yan, Jie, Lin, Yubo, Guo, Weibo, Li, Peng & Zhou, Kaiya, 2016, A new species of Hemiphyllodactylus Bleeker, 1860 (Squamata: Gekkonidae) from Guizhou, China, pp. 543-554 in Zootaxa 4117 (4) on pages 546-553, DOI: 10.11646/zootaxa.4117.4.6, http://zenodo.org/record/26592
Streptomyces reniochalinae Li & Wang & Zhou & Lin & Lu 2019, SP. NOV.
No full textDESCRIPTION OF STREPTOMYCES RENIOCHALINAE SP. NOV. Streptomyces reniochalinae (re.ni.o.cha′ li.nae. N.L. gen. n. reniochalinae of the marine sponge Reniochalina stalagmitis). Aerobic, Gram-stain-positive, non-motile, non-acid–alcohol-fast actinomycete that forms extensively branched substrate mycelia and white aerial hyphae which differentiated into chains of smooth-surfaced spores. Growths occurs at 20–40 Ǫ C and at pH 6.0–11.0 with 0–15% NaCl. Gelatin, and Tweens 40 and 60 are degraded, but CMC, aesculin and Tween 80 are not. Degradation of Tween 20 and starch are weakly positive. Milk coagulation, peptonization and nitrate reduction are positive. Utilizes L- arabinose, D- arabinose, cellobiose, D- fructose, D- galactose, D- glucose, glycerol, lactose, maltose, D- mannitol, D- mannose, melibiose, L- rhamnose, D-ribose, trehalose, D- xylose, sodium acetate, sodium pyruvate and sodium citrate as sole carbon sources; weakly utilizes inositol and raffinose, but not dulcitol, D- sorbitol, sucrose or D- xylitol. Utilizes L- glutamine, L- lysine, L- proline, L- serine and L- threoninexanthine as sole nitrogen sources; weakly utilizes L- alanine, L- arginine, L- asparagine, glycine, L- histidine, hypoxanthine, L- hydroxyproline and L- leucine, but not adenine, L- aspartic acid, L- cystenine, L- glutamic acid, L-methionine, L- phenylalanine, L- tryptophan, L- tyrosine or L-valine. The cell wall contains LL- diaminopimelic acid and the whole-cell sugars are galactose, glucose and ribose. Diphosphatidylglycerol, phosphatidylethanolamine and phosphatidylinositol are the predominant polar lipids. The menaquinone system contains MK-9(H 6) as a major component, and MK-9(H 4) and MK-9(H 8) as minorities. The major fatty acids are iso-C 16: 0, anteiso-C 15: 0 and anteiso-C 17: 0. The G+C content is 71.9 mol% of the 7.6 Mb draft genome. The type strain, LHW50302 T (=DSM 106194 T =CCTCC AA 2018013 T), was isolated from a Reniochalina stalagmitis marine sponge collected in the South China Sea. The GenBank accession number for the 16S rRNA gene sequence and the draft genome sequence of the type strain are KX347891 and QOIM00000000, respectively.Published as part of Li, Lei, Wang, Jie, Zhou, Yong-jun, Lin, Hou-wen & Lu, Yan-hua, 2019, Streptomyces reniochalinae sp. nov. and Streptomyces diacarni sp. nov., from marine sponges, pp. 99-104 in International Journal of Systematic and Evolutionary Microbiology 69 (1) on pages 102-103, DOI: 10.1099/ijsem.0.003109, http://zenodo.org/record/604864
Streptomyces diacarni Li & Wang & Zhou & Lin & Lu 2019, SP. NOV.
No full textDESCRIPTION OF STREPTOMYCES DIACARNI SP. NOV. Streptomyces diacarni (di.a.car′ ni. N.L. gen. n. diacarni of the marine sponge Diacarnus megaspinorhabdosa). Aerobic, Gram-stain-positive, non-motile, non-acid–alcohol-fast actinomycete that forms extensively branched substrate mycelia and white aerial hyphae which differentiated into chains of smooth-surfaced spores. Growths occurs at 20–40 Ǫ C and at pH 6.0–11.0 with 0–15 % NaCl. Growths occurs at 20–40 Ǫ C and at pH 6.0–11.0 with 0–15 % NaCl. Gelatin, and Tweens 20, 40 and 60 are degraded, but CMC and Tween 80 are not. Degradation of aesculin and starch are weakly positive. Milk coagulation, peptonization and nitrate reduction are positive. Utilizes L- arabinose, D- arabinose, cellobiose, D- fructose, D- galactose, D- glucose, glycerol, lactose, maltose, D- mannitol, D- mannose, melibiose, L-rhamnose, D- ribose, sodium acetate, sodium pyruvate, sodium citrate, trehalose and D- xylose as sole carbon sources; weakly utilizes inositol and raffinose, but not dulcitol, D- sorbitol, sucrose or D- xylitol. Utilizes L- alanine, L- arginine, L- asparagine, L- glutamine, glycine, L- histidine, L-hydroxyproline, L- lysine, L- proline, L- serine, L- threonine and xanthine as sole nitrogen sources; and weakly utilizes hypoxanthine, L- leucine and L- valine, but not adenine, L-aspartic acid, L- cystenine, L- glutamic acid, L- methionine, L-phenylalanine, L- tryptophan or L- tyrosine. The cell wall contains LL- diaminopimelic acid and whole-cell sugars are glucose, galactose and ribose. Diphosphatidylglycerol, phosphatidylethanolamine and phosphatidylinositol are the predominant polar lipids. The menaquinone system contains MK-9(H 6) as a major component, and MK-9(H 4) and MK-9(H 8) as minorities. The major fatty acids are iso-C 16: 0, anteiso-C 15: 0 and anteiso-C 17: 0. The G+C content is 72.1 mol% of the 7.6 Mb draft genome. The type strain, LHW51701 T (=DSM 106126 T =CCTCC AA 2018017 T), was isolated from a Diacarnus megaspinorhabdosa marine sponge collected in the South China Sea. The GenBank accession number for the 16S rRNA gene sequence and the draft genome sequence of the type strain are KX347890 and QOIN00000000, respectively.Published as part of Li, Lei, Wang, Jie, Zhou, Yong-jun, Lin, Hou-wen & Lu, Yan-hua, 2019, Streptomyces reniochalinae sp. nov. and Streptomyces diacarni sp. nov., from marine sponges, pp. 99-104 in International Journal of Systematic and Evolutionary Microbiology 69 (1) on page 103, DOI: 10.1099/ijsem.0.003109, http://zenodo.org/record/604864
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
Data collection for Section M in the northeastern Bay of Bengal
No full textObservational Data from the China-Myanmar joint cruise, in relation to the publication
An intrathermocline eddy observed in the northeastern Bay of Bengal
Xiwu Zhou, Yun Qiu, Xinyu Lin, Hui Teng, Cherry Aun
Descriptions of four new dextral land snails of the genus Camaena (Gastropoda, Eupulmonata, Camaenidae) from south China
No full textIn this study, four new dextral camaenid from China are reported, based on shell morphology, reproductive system anatomy, and molecular phylogenetic analyses: Camaena funingensis Zhou, Wang & Lin, sp. nov., Camaena gaolongensis Zhou, Wang & Lin, sp. nov., Camaena maguanensis Zhou, Wang & Hu, sp. nov., and Camaena yulinensis Zhou, Wang & Hu, sp. nov. Detailed descriptions of the morphological characteristics including shells and genitalia, DNA sequences, and living environments of the four new species are provided, with further comparisons with congeners
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