37,765 research outputs found
On the adjoint of Laplace’s tidal equations
No full textThe concept of the adjoint is regularly used in studies of both the resonances of physical systems and their response to external forcing. This report reviews the underlying theory involved in the adjoints of both differential equations and matrices and shows how the theory may be used to derive a physically meaningful adjoint to Laplace’s Tidal Equations.
Numerical models of the tides usually use a finite difference form of the tidal equations. The report investigates the adjoint properties of the finite difference equations. It shows that the are not necessarily symmetrical, i.e. the finite difference form of the adjoint tidal equations may not be the same as the adjoint of the normal finite difference equations. It also shows that, with a suitable choice of the way the boundary conditions and Coriolis terms are represented, the finite difference forms can be made symmetric
Single- and Multi-carrier Quadrature Amplitude Modulation: Principles and Applications for Personal Communications, WATM and Broadcasting: 2nd
No full textSingle- and Multi-carrier Quadrature Amplitude Modulation Principles and Applications for Personal Communications, WLANs and Broadcasting L. Hanzo Department of Electronics and Computer Science, University of Southampton, UK W. Webb Motorola, Arlington Heights, USA formerly at Multiple Access Communications Ltd, Southampton, UK T. Keller Ubinetics, Cambridge Technology Centre, Melbourn, UK formerly at Department of Electronics and Computer Science, University of Southampton, UK Motivated by the rapid evolution of wireless communication systems, this expanded second edition provides an overview of most major single- and multi-carrier Quadrature Amplitude Modulation (QAM) techniques commencing with simple QAM schemes for the uninitiated through to complex, rapidly-evolving areas, such as arrangements for wide-band mobile channels. Targeted at the more advanced reader, the multi-carrier modulation based second half of the book presents a research-orientated outlook using a variety of novel QAM-based arrangements. * Features six new chapters dealing with the complexities of multi-carrier modulation which has found applications ranging from Wireless Local Area Networks (WLAN) to Digital Video Broadcasting (DVB) * Provides a rudimentary introduction for readers requiring a background in the field of modulation and radio wave propagation * Discusses classic QAM transmission issues relevant to Gaussian channels * Examines QAM-based transmissions over mobile radio channels * Incorporates QAM-related orthogonal techniques, considers the spectral efficiency of QAM in cellular frequency re-use structures and presents a QAM-based speech communications system design study * Introduces Orthogonal Frequency Division Multiplexing (OFDM) over both Gaussian and wideband fading channels By providing an all-encompassing self-contained treatment of single- and multi- carrier QAM based communications, a wide range of readers including senior undergraduate and postgraduate students, practising engineers and researchers alike will all find the coverage of this book attractive
Measurement of the ratio of branching fractions B(B0→K∗0γ )/B(B0s→φγ ) and the directCP asymmetry inB 0→K∗0γ
No full textThe ratio of branching fractions of the radiative B decays B0→K⁎0γ and B0s→ϕγ has been measured using an integrated luminosity of 1.0 fb−1 of pp collision data collected by the LHCb experiment at a centre-of-mass energy of s√=7TeV. The value obtained is
B(B0→K⁎0γ)B(B0s→ϕγ)=1.23±0.06(stat.)±0.04(syst.)±0.10(fs/fd),
where the first uncertainty is statistical, the second is the experimental systematic uncertainty and the third is associated with the ratio of fragmentation fractions fs/fd. Using the world average value for B(B0→K⁎0γ), the branching fraction B(B0s→ϕγ) is measured to be (3.5±0.4)×10−5.
The direct CP asymmetry in B0→K⁎0γ decays has also been measured with the same data and found to be
ACP(B0→K⁎0γ)=(0.8±1.7(stat.)±0.9(syst.))%.
Both measurements are the most precise to date and are in agreement with the previous experimental results and theoretical expectations
Sounama (Stenaulophrys) dentata Liang & Webb 2002, sp. nov.
No full textSounama (Stenaulophrys) dentata sp. nov. (®gures 87, 88, 110) Length: 4.8±5.0 mm, 5.4 mm. External characters as in S. (Sounama) acuta but vertex without a medial longitudinal carina. Male genitalia similar to borneensis but subgenital plate (®gure 88) with expanded basal region very short, outer margin strongly tapered to long, posterodorsally directed, spine-like apical process and aedeagal shaft (®gure 87) with a ventral subapical projection. Etymology. Named for the presence of a ventral tooth on the aedeagal shaft. Material examined. HOLOTYPE, China: Guangxi, Tianlin, Langping, 30 May 1982 (J.-K. Yang) (IZCAS). PARATYPES: China: 1, 1 Guangxi, Jinxiu, Mt Dayaoshan, 13 June 1982 (F.-S. Li) (IZCAS). Distribution. Southwestern China (Guangxi).Published as part of Liang, A. - P. & Webb, M. D., 2002, New taxa and revisionary notes in Rhinaulacini spittlebugs from southern Asia (Homoptera: Cercopidae), pp. 729-756 in Journal of Natural History 36 (6) on page 753, DOI: 10.1080/00222930110062336, http://zenodo.org/record/475735
Kutara Distant 1908
No full textChecklist of Kutara species K. breviplata Viraktamath, 1998: 170, figs. 236–244. Distribution: India. K. brunnescens Distant, 1908: 308–309, fig. 197; Kuoh, 1966: 119-120, fig. 108; Linnavuori, 1978: 44–45, figs. 13f–h; Anufriev, 1979: 166–167, figs. 1–6; lectotype male figured by Zhang & Webb, 1996: 16, figs. 29, 168–174, 498; Viraktamath, 1998: 168, figs. 191–204. Distribution: Russia, China, India, Nepal, Sri Lanka. K. costalis (Distant, 1908), 146, figs. 8–8a; Zhang & Webb, 1996: 16, figs. 196–200, 496. Distribution: Borneo (Kalimantan Island). K. crypta Viraktamath, 1998: 170, figs. 225–231. Distribution: Burma. K. grisescens Evans, 1947: 256–257, figs. 31b, b, h; Zhang & Webb, 1996: 16, figs. 201–207, 503. Distribution: Sarawak (Malaysia). K. lui Zhang & Chen, 1997: 176–177, figs. 4A–F. Distribution: China. Kutaria nigrifasciata Kuoh, 1992: 300–301 (316), figs. 59a–h. Kutara nigrifasciata, Zhang & Webb, 1996: 16; Zhang, Chen & Zhang, 1997: 175–176, fig. 3. Distribution: China. K. producta (Evans, 1947), 256, figs. 31d, g, j; Zhang & Webb, 1996: 16, figs. 181–188, 499. Distribution: Malaysia. K. sinensis (Walker, 1851), 871; Metcalf, 1966: 89; Zhang & Webb, 1996: 16, figs. 189–195, 497. Distribution: China. K. spinifera Zhang & Chen, 1997: 177–178, figs. 5A–F. Distribution: China. K. striata Viraktamath, 1998: 169, figs. 214–224. Distribution: India. K. tenuipenis Zhang & Zhang, 1997: 178–179, figs. 6A–F. Distribution: China. K. transversa Zhang & Webb, 1996: 16–17, figs. 175–180, 502; Viraktamath, 1998: 170, figs. 232–235. Distribution: Sri Lanka. K. trifida Viraktamath, 1998: 168–169, figs. 205–213. Distribution: India. K. trispinosa Xu & Zhang sp. nov. Distribution: Vietnam.Published as part of Xu, Deliang, Dietrich, Christopher H., Webb, M. D. & Zhang, Yalin, 2020, A new species of the Oriental leafhopper genus Kutara Distant (Hemiptera: Cicadellidae: Deltocephalinae) from Vietnam, pp. 585-592 in Zootaxa 4772 (3) on pages 586-587, DOI: 10.11646/zootaxa.4772.3.8, http://zenodo.org/record/381976
DSM of Newton type for solving operator equations F(u) = f with minimal smoothness assumptions on F.
No full textThis paper is a review of the authors’ results on the DSM (Dynamical Systems Method) for solving operator equation (*) F(u) = f. It is assumed that (*) is solvable. The novel feature of the results is the minimal assumption on the smoothness of F. It is assumed that F is continuously
Fr´echet differentiable, but no smoothness assumptions on F0(u) are imposed. The DSM for solving equation (*) is developed. Under weak assumptions global existence of the solution u(t) is proved, the existence
of u(1) is established, and the relation F(u(1)) = f is obtained. The DSM is developed for a stable solution of equation (*) when noisy data
f are given, kf − f k
Kanozata shillongana Liang & Webb 2002, comb. nov.
No full textKanozata shillongana (Distant), comb. nov. (®gures 18, 19, 52 ±56) Au W dus shillonganu s Distant, 1916: 204, ®gure 156. Type, India, lost. Stenaulophrys shillonganus (Distant); Chou et al., 1988: 137. Material examined. India (northeastern): 1, Kurseong, alt. 5000 ft, E. Himalayas, 10±26 September [19]09 (Lynch, C., Ind. Museum) (BMNH) (®gured specimen); 1, Darjeeling, Fengal, 20 May 1938 (T. C. Maa); 1, NE Darjeeling ± Tiger Hill, 2250 m, 30 August 1958 (J. L. Gressitt) (both in BPBM). Thailand (north): 1, NW Mae Hong Son, Pasia N.P., 1700 ft, 29 November 1985 (K. A. Spencer) (NMW. Z. 1981-08 6) (NMGW). Laos: 1, Vientiane Province, Ban Van Eue, 31 December 1968 (BPBM). China, Yunnan: 1, Pingbian, Daweishan, 1400± 1500 m, 17 June 1956 (K.- R. Huang et al.); 1, same locality, but collected by Pan ®lov (all in IZCAS); 3, Yingjiang, Mangxian electric power station, 10 October 1981 (X.-S. He) (SIE); 1, Ruili, 2 September 1979 (S.-L. Liu) (TMNH). Guangxi: 1, 3, Jinxiu, Dayaoshan, 12± 15 June 1982 (J.-K. Yang) (CAUIC); Hainan: 1, 2, Ta Han, 23± 24 June 1935 (J. L. Gressitt) (NCSU); 1, Jianfengling, 14 December 1974 (F.-S. Li); 1, 2, same data, but collected by J.-K. Yang (all in CAUIC); 1, Mt Diaoluo, 11 May 1965 (S.-K. Liu) (BJMNH); Fujian: 2, 1, Dehua, Shuikou, 7, 12 November 1974 (F.-S. Li) (CAUIC). Tibet: 1, MeÃdog, Gelin, 1550±1900 m, 24 May 1983 (Z. Lin) (IZCAS). Distribution. Northeastern India (Assam, Shillong), northern Thailand (new record), Laos (new record), southern China (Yunnan, Guangxi, Hainan, Fujian) (new record), Tibet (new record). Remarks. The type of A. shillonganus could not be found in the BMNH collection (the depository for other Distant types) and is presumed lost.Published as part of Liang, A. - P. & Webb, M. D., 2002, New taxa and revisionary notes in Rhinaulacini spittlebugs from southern Asia (Homoptera: Cercopidae), pp. 729-756 in Journal of Natural History 36 (6) on page 744, DOI: 10.1080/00222930110062336, http://zenodo.org/record/475735
Skolomystax gippslandicus Suter & Webb & Gattolliat 2023, n. sp.
No full text<i>Skolomystax gippslandicus</i> n. sp. (figs. 10, 11, 25e) <p>u r n: l s i d: z o o b a n k. o r g: a c t: C 7 8 7 8 9 3 E - 3 F 4 3 - 4 3 C E 91E1-883992186247</p>Published as part of <i>Suter, P. J., Webb, J. M. & Gattolliat, J. - L., 2023, Skolomystax, a new genus for the Australian species formerly included in Centroptilum Eaton (Ephemeroptera: Baetidae), pp. 1-48 in Memoirs of Museum Victoria (Mem. Mus. Vic.) (Mem. Mus. Vic.) 82</i> on page 21, DOI: 10.24199/j.mmv.2023.82.01, <a href="http://zenodo.org/record/8065508">http://zenodo.org/record/8065508</a>
Organization and chromosomal localization of the murine Testisin gene encoding a serine protease temporally expressed during spermatogenesis
No full textScarman, Anthony L.; Hooper, John D.; Boucaut, Kerry J.; Mae-Le Sit; Webb, Graham C.; Normyle, John F.; Antalis, Toni M
K. F. C. Rose, The date and author of the Satyricon, with an introduction by J. P. Sullivan, 1971
No full textRastier Françoise. K. F. C. Rose, The date and author of the Satyricon, with an introduction by J. P. Sullivan, 1971. In: Revue des Études Anciennes. Tome 74, 1972, n°1-4. pp. 300-303
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