285,164 research outputs found
Model reduction of fuzzy logic systems
Full text linkThis paper deals with the problem of l 2 - l ∞ model reduction for continuous-time nonlinear uncertain systems. The approach of the construction of a reduced-order model is presented for high-order nonlinear uncertain systems described by the T-S fuzzy systems, which not only approximates the original high-order system well with an l 2 - l ∞ error performance level γ but also translates it into a linear lower-dimensional system. Then, the model approximation is converted into a convex optimization problem by using a linearization procedure. Finally, a numerical example is presented to show the effectiveness of the proposed method. © 2014 Zhandong Yu et al
Experimental evidence in favor of the fluctuation origin of the transverse-resistance increase near the edge of the superconducting transition in Bi2Sr2CaCu2O8+δ
No full textThe experimentally observed increase of the transversal resistance near the edge of the transition in Bi2Sr2CaCu2O8+delta epitaxial film is analyzed on the basis of a recent theoretical proposal on its fluctuation origin [L. Ioffe, A. I. Larkin, A. A. Varlamov, and L. Yu, Phys. Rev. B (to be published). It is shown that the excess resistance in a wide range of temperatures increases logarithmically as the superconducting transition temperature is approached from above, in agreement with the theoretical consideration. These results are also compared with the available data on YBa2Cu3O7 compounds
The mineralogy of the diamond, par Yu. L. Orlov, 1977
No full textPoirot Jean-Paul. The mineralogy of the diamond, par Yu. L. Orlov, 1977. In: Bulletin de Minéralogie, volume 101, 5-6, 1978. pp. 582-583
The mineralogy of the diamond, par Yu. L. Orlov, 1977
No full textPoirot Jean-Paul. The mineralogy of the diamond, par Yu. L. Orlov, 1977. In: Bulletin de Minéralogie, volume 101, 5-6, 1978. pp. 582-583
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
Marine algal flora of Pengchia Yu and its special place in the marine phytogeography of Taiwan
No full textA total of 52 taxa of marine benthic algae is reported from Pengchia Yu, a remote islet located off northeastern Taiwan. Two taxa represent new records for the marine flora of Taiwan, three taxa show their range extension. This islet acts as a tropical refugium in a region that is widely known to have cold water floristic affinities. The effects of the sea surface-water temperature and current on the distribution of algae are also discussed.TR: CS9510874Source type: Electronic(1
Yu. M. Lotman Forever Turned the Idea of the Text
No full textAn interview with O. A. Kling is presented, revealing the significance of Yu. M. Lotman’s works for literary criticism of the XX–XXI centuries. Oleg Alekseevich Kling is a Russian literary critic, Doctor of Philology, Professor, Head of the Department of Literary Theory of the Faculty of Philology of Lomonosov Moscow State University, winner of the magazine award “Questions of Literature”. The areas of scientific interests are Russian literature, the history of Russian literary studies, symbolism and post-symbolism, the Silver Age. He is the author of many works in these fields, including books: “Alexander Blok: The Structure of the Novel in Verse”, “Russian Poetry: The poem ‘Twelve’” (2004), “The Poetic World of Marina Tsvetaeva” (2004), “The Influence of Symbolism on Post-Symbolist Poetry in Russia of the 1910s: Problems of Poetics” (2010), “‘The Platinum Age’ in Russian Literature” (2017), editor-in-chief of the encyclopedia “Russian Literary Critics of the twentieth Century: BioBibliographic Dictionary. Vol. I: A–L” (2017)
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Qidan yu he Liao dai Han yu ji qi jie chu yan jiu
No full text"Qi dan yu he liao dai han yu ji qi jie chu yan jiu" ben shu li yong qi dan yu wen ben he han yu xiang guan wen ben dui qi dan yu he liao dai han yu zuo zong he yan jiu,xi tong ti qu qi dan wen zi dan wei he han yu,Menggu yu yu yan dan wei de dui ying,bing zong he gen ju wen ben fen bu,shi dai fen bu he han yu fang yan yu yin te zheng wei ju ti de dui ying xun zhao xian zhi tiao jian.ran hou zai ci ji chu shang tui qiu liao dai han yu yin xi he qi dan yu de ge zhong xin xi,bing jin yi bu gui na qi dan yu he han yu xiang hu pi pei de gui l
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