42,226 research outputs found
Bai pin pu wang luo zhong de jing ji xue
No full textLuo, Yuan.Thesis Ph.D. Chinese University of Hong Kong 2015.Includes bibliographical references (leaves 273-283).Abstracts also in Chinese.Title from PDF title page (viewed on 01, November, 2016).Luo, Yuan
Frequency domain iterative feedforward/feedback tuning for MIMO ANVC
No full textA new iterative feedback/feed-forward tuning (IFFT) method is presented for multiple-input multiple-output (MIMO) control systems that relies on efficient computation of the negative gradient of the controller cost function in the frequency domain. The iterative method is using only one experiment per iteration and it is therefore suitable for realtime implementation for periodic adjustment of the controller. The primary target application area of the presented method is self-tuning feedback control in active noise and vibration control (ANVC)
FIGURE 5. R. tomurensis L. Luo, C in Rosa tomurensis, a new species of Rosa (Rosaceae) from China
No full textFIGURE 5. R. tomurensis L. Luo, C. Yu & Q. X. Zhang, A. Habit, B–C. Leaf, D. Stipule, E. Prickle, F–H. Flower, I. Pink flower, J–K. Bud, L–N. Hip, O. Whole plant.Published as part of Deng, Tong, Luo, Le, Yu, Chao, Zhang, Qi-Xiang, Liu, Xue-Sen & Deng, Ze-Yi, 2022, Rosa tomurensis, a new species of Rosa (Rosaceae) from China, pp. 169-177 in Phytotaxa 556 (2) on page 173, DOI: 10.11646/phytotaxa.556.2.6, http://zenodo.org/record/696599
Rosa tomurensis L. Luo, C. Yu & Q. X. Zhang
No full textRosa tomurensis L. Luo, C. Yu & Q. X. Zhang (Figures 3, 4, 5) Type: — CHINA. Xinjiang Uygur autonomous region, Akesu Prefecture, Wensu County, Tuomuerfeng Natural Preservation Areas, in river valleys, ca. 1800m, 10 June 2017, L. Luo, C. Yu, Y. J. Sui, F. Yang & S. Zhao 171022 (holotype BJFC00107674!). Diagnosis: — R. tomurensis is different from R. laxa in the following characteristics: prickles are rare, single prickles are larger, and the tip of prickles is not curved significantly; leaf blade apex serrate only, subbase one-third entire; flowers often solitary, and single flowers are larger than R. laxa; receptacles purplish red, occasionally green; pedicels very long, purplish red or green; sepals are purplish red or green; hips are larger than R. laxa, often pendulous, hip apex without short neck; hip pedicels slightly inflated at base; sepals abaxially, receptacle and pedicel glandular or glandless together, the glands in the pedicel sometimes shed at anaphase. (Table 2). Description: —Shrubs, erect, 2.5–3 m tall, basal branching. Branchlets slender, brownish red; branchial spines are rare, scattered, rarely opposite, pale yellow and white, unequal in length, slender, broad at base, apex slightly downward curved. Leaflets 5–9, usually 7, elliptic, obovoid, ovoid or oblong, 0.6–2 × 0.5–1 cm, abaxially sparsely pilose, adaxially smooth; leaf margin simple serrate, often entire subbase one-third. Stipules usually wider, base mostly adnate to petiole, free portion ovate, triangulate, margin glandular spot. Flowers often solitary, sometimes 2–3 in corymbose cymes, (3) 3.5–6.5 (7) cm in diam; pedicel 1.5–3.5 cm, pedicel and calyx tube glabrous or tomentose and sparsely glandular hairs; bracts ovate, margin glandular teeth, abaxially with distinct midrib and lateral veins; sepals long lanceolate, margin entire, apex elongated widened into appendages, abaxially glandular and densely tomentose, adaxially densely pubescent, margin more densely; petals white, sparse pink,or pale pink, at bud stage, petal tips are often pink or pale pink. Hip subglobose or ovoid, red, shiny, 1–2.1cm in diam, 1.5–2 cm long, sepals persistent and spreading; fruit pedicel straight or bent. Distribution and habitat: —This species is produced in the Tuomuerfeng Natural Preservation Areas of Wensu County in Aksu Perfecture, the Pamir Plateau Mountain Area of Kizilsu Kirgiz Autonomous Prefecture, Tajik Autonomous County of Taxkorgan in Kashgar Prefecture and the south slope of Duku Highway, Xinjiang Uygur Autonomous Region. It borns in arid mountains, river valleys and riparian thickets, at elevations between 1700 m and 3000 m. The associated woody plants in this area are R. laxa, R. albertii, Berberis sp., Caragana sp., etc. Phenology: —Flowering from June to July, fruiting from August to October. Etymology: —The specific epithet refers to the distribution where the new species was first discovered. Paratypes: — CHINA. Xinjiang Uygur autonomous region, Akesu Prefecture, Wensu County, Tuomuerfeng Natural Preservation Areas, in river valleys, ca. 1800m, 24 September 2017, L. Luo, C. Yu, Y. J. Sui, F. Yang & S. Zhao 171023 (BJFC00107688!); the same locality, 8 June 2017, L. Luo, C. Yu, Y. J. Sui, F. Yang & S. Zhao 171024 (BJFC00107671!). Conservation status: —Based on currently available data, the species should be assigned to the ‘Data Deficient’ (DD) category of IUCN (2022). There is little human interference in this species’ distribution areas, so these populations are not easy to be destroyed.Published as part of Deng, Tong, Luo, Le, Yu, Chao, Zhang, Qi-Xiang, Liu, Xue-Sen & Deng, Ze-Yi, 2022, Rosa tomurensis, a new species of Rosa (Rosaceae) from China, pp. 169-177 in Phytotaxa 556 (2) on pages 174-175, DOI: 10.11646/phytotaxa.556.2.6, http://zenodo.org/record/696599
Structure characterization and tribological study of magnetron sputtered nanocomposite nc-TiAlV(N, C)/a-C coatings
No full textGrown by reactive unbalanced magnetron sputtering in a mixed N2 and CH4 gaseous medium, heterogeneous nanocomposite coatings in the Ti-Al-V-N-C system show extraordinarily excellent tribological performance of coated machining tools. Using analytical high resolution TEM, EELS, FEG-SEM, XRD, and Raman spectroscopy, this paper reports detailed structural and chemical characterization of the coatings grown at various CH4: N2 ratios. Meanwhile, the mechanical and tribological properties were also measured, including hardness, Young’s modulus, residual stress and the dry-sliding friction and wear at varying environmental humidity. When CH4 gas was introduced in the deposition, the structure of the coatings has been found to experience a change from nano-scale TiAlN-VN multilayer architecture to a complex mixture of columnar grains of nc-TiAlV(N,C)/a-C nanocomposites and inter-column network of sp2-type amorphous carbon. Carbon incorporation and segregation also shows remarkable influence on the columnar growth model by leading to finer grain size. As compared to the carbon-free nitride coating, the nanocomposite coatings showed substantially reduced residual stress owing to the free-carbon precipitation, whereas the coatings maintained comparable hardness to the carbon-free TiAlN/VN. Their tribological properties were found to be strongly dependent on the environment. In humid air at RH > 30%, the coatings showed low friction coefficient less than 0.4 and extremely low wear rate at a scale of ~10-17 m3N-1m-1
Intonation in Luo
No full textThis thesis investigates the intonation of Luo. It shows how intonation distinguishes sentences. It also investigates how information structure (i.e. focus, dislocations and topics) is intonationally cued in a sentence. The aim is to establish the phonological and phonetic representation of Luo intonation by examining the factors that contribute to the observed F0 contours. Data were collected in Rorya and Tarime districts in Tanzania, where Luo is predominantly spoken. The materials designed comprise of scripted Luo sentences, Swahili sentences to be translated into Luo and picture-based tasks. The analysis is based on the Auto-segmental metrical theory which maps phonological elements to continuous acoustic parameters (Ladd, 1996, 2008). It is found that Luo is a tone-terracing language with four lexical tones: High, Low, Falling and Rising. The observed downtrends are downstep, declination and final lowering. Downstep is the most significant process, contrasting automatic and non-automatic downstep. The latter has no evidence of floating L and thus attributed to right edge boundary effect. Declination is observed in all-High and all-Low tone sequences, as a phonetic effect. Final lowering is also observed as a final effect in both declaratives and questions. Downstep is also a final effect triggered by a boundary L%. Questions are produced with Pitch Range Expansion triggered by a left edge -H intonational tone. There is no prominence on focused constituents but focus constructions are produced with a higher register. Luo dislocations are asymmetrical, with right dislocations phrased with the main clause while left dislocations are phrased separately from the main clause. Complex clauses, except complementizer clauses, are recursive
Esempio di rappresentazione del sé in Lu Ling 路翎, Luo Dadou de yisheng 罗大斗的一生 (La vita di Luo Dadou)
No full textIn the story Luo Dadou’s life (Luo Dadou de yisheng 罗大斗的一生), Lu Ling 路翎 (1923-1994) gives shape to the deepness of human psyche and stresses the suffering of the Self of his age by giving a brilliant emphasis to human individuality. The author succeeds in doing so by creating an amazing psychological characterization of the main character, both by means of words and by means of grammatical structures. By applying Denton’s categories for the study of the Self in modern Chinese literature, I analysed Lu Ling’s short story from the Freudian and Kleinian psychodynamic perspective, so to demonstrate how Lu Ling enters his characters’ minds and wonderfully recreates the psychological dynamics inside and between them
Design of split-inductors applied in positive output super lift luo-converters
No full textAs the demand of the modern electronic devices and appliances are getting higher, the role of the converters with higher output and efficiency become wider for different industries. It has been the role of engineers to explore the converter topology to provide higher output voltage in simple design with less cost. There are quite a number of different ways of lifting output voltage in converter topology.The method that the author will be introducing is called “Split- Inductors Method”, where the
output voltage is totally dependent on the number of inductors used in the converter design. The
report will include a detail discussion about design and results of” split-inductors topology”,
applied to “Positive Output Super Lift Luo Converter” using software simulations and hardware
experiments.Bachelor of Engineerin
Lepadella jingruae Luo & Segers 2020, n. sp.
No full textLepadella jingruae n. sp. Figures 6 a–c, I-5 Type locality. Lohulu River near Bomane, DR Congo 24 May 2010 (KM48, KM49). Material examined. Holotype: one female specimen in permanent slide, deposited in RBINS (RIR.305); Paratypes: six permanent slides containing one female specimen each, deposited in RBINS (RIR.306 to RIR.311), one permanent slides containing one female specimen and one permanent slide containing two female specimens in CSB-UK; one permanent slide containing two female specimens, deposited in SHNU. Differential diagnosis. The relatively flat lorica of L. jingruae n. sp. places the species in the vicinity of L. ovalis (Müller, 1786) and L. eurysterna Myers, 1942. The new species is diagnosed from both by the remarkable protruding projections laterally of the head aperture, and further from L. ovalis by its smaller size and posteriorly rounded lorica (relatively large and with a sharply set-of posterior concavity in L. ovalis). Lepadella jingruae n. sp. can easily be distinguished from species of the L. patella— complex, including the similarly rounded L. discoidea Segers, 1993 by its flat lorica and the protruding lateral projections of the head aperture. Differential diagnosis. Parthenogenetic female (male unknown): Lorica rounded, about as wide as long. Ventral lorica flat, dorsally with a central dome, lateral parts strongly flattened, lorica about thrice as wide as high. Head aperture ventrally a deep V-shaped sinus, dorsally semi-circular in anterior view, broadly U-shaped in ventral view, with weak collar. Anterior of lorica protruding into a pair of well-developed, sharp projections. Lateral margins of lorica smooth, evenly curved, posterior edge convex. Dorsal lorica smooth, without markings. Apertures to the lateral antennas situated slightly posterior the level of the anterior margin of the foot aperture, arranged symmetrically about medially from median axis to the lateral margin of the lorica. Foot aperture elongate, lateral margins diverging to posteriorly. Foot with three distinct pseudosegments, the distal one about twice as long as the second, bearing a dorsal sensory groove near its basis. A pair of equal-sized toes present, these almost parallel-sided basally, more strongly tapering from about midway to distally. Measurements (n=10). Lorica length: 100–110 (106), width: 90–101 (93); head aperture width: 25–31 (28), depth dorsally: 15–21 (18), depth ventrally: 24–28 (25), foot aperture width: 15–19 (18), length: 26–31 (28), toe length: 26–29 (29). Etymology. The specific name is as a noun in the genitive case, after Miss Jingru Zhu, daughter of the first author of this paper.Published as part of Luo, Yongting & Segers, Hendrik, 2020, Eight new Lepadellidae (Rotifera, Monogononta) from the Congo bring to level endemism in Africa's rotifers, pp. 371-387 in Zootaxa 4731 (3) on page 376, DOI: 10.11646/zootaxa.4731.3.6, http://zenodo.org/record/365363
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