59,427 research outputs found
A Characterization of Procyclic Groups via Complete Exterior Degree
No full textWe describe the nonabelian exterior square G∧^G of a pro-p-group G (with p arbitrary prime) in terms of quotients of free pro-p-groups, providing a new method of construction of G∧^G and new structural results for G∧^G. Then, we investigate a generalization of the probability that two randomly chosen elements of G commute: this notion is known as the “complete exterior degree” of a pro-p-group and we will use it to characterize procyclic groups. Among other things, we present a new formula, which simplifies the numerical aspects which are connected with the evaluation of the complete exterior degree
C, Marin B., Biondi G., Naples. Démythifier la ville
No full textRodrigues-Malta Rachel. C, Marin B., Biondi G., Naples. Démythifier la ville. In: Méditerranée, tome 96, 1-2-2001. Politique urbaines à Naples et à Marseille: regards croisés, sous la direction de Nicole Girard et Michèle Joannon. pp. 120-121
Engraçadinha : passagens e cortes / Nelson Rodrigues na televisão
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Comunicação e ExpressãoAsfalto Selvagem I e II - Engraçadinha seus amores e seus pecados foi escrito por Nelson Rodrigues, originalmente, sob a forma de folhetim, diariamente publicado no jornal Ultima Hora (1959-60), e seguindo o caminho de seus folhetins anteriores recebeu uma impressão posterior (1961) em forma de livro, "transformando-se" em romance. Em 1995, novamente, Asfalto Selvagem... migra para outro veículo da indústria cultural indo parar num seriado de televisão. Este trabalho propõe retraçar as pontes entre o folhetim como forma de literatura industrializada e a televisão como veículo da indústria cultural e como bem simbólico (na cultura brasileira), a fim de localizar Asfalto Selvagem: Engraçadinha seus amores e seus pecados em sua passagem do jornal à televisão em alguns aspectos implicados nesse processo. Em primeiro lugar, na obra de Nelson Rodrigues, Engraçadinha destaca-se em sua travessia social de gêneros e como romance-folhetim. Em segundo lugar, há uma re-montagem histórica da teledramaturgia como pano de fundo propiciador de uma exposição do folhetim de Nelson Rodrigues. Em terceiro lugar, a passagem, propriamente dita, do folhetim à imagem, se por um lado reforça o caráter conservador da TV, por outro, atualiza a transgressividade erótica presente no texto rodrigueano, já como uma adaptação ao século XX do folhetim do século XIX
Observations of Bºs→ψ(2S)η and Bº(s)→ψ(2S)π+π- decays
No full textFirst observations of the B0s
→ψ(2S)η, B0 →ψ(2S)π
+
π
− and B0s
→ψ(2S)π
+
π
− decays are made
using a dataset corresponding to an integrated luminosity of 1.0 fb−1 collected by the LHCb experiment in
proton–proton collisions at a centre-of-mass energy of
√
s = 7 TeV. The ratios of the branching fractions
of each of the ψ(2S) modes with respect to the corresponding J/ψ decays are
B(B0s
→ψ(2S)η)
÷
B(B0s
→J/ψη)
= 0.83± 0.14 (stat)±0.12 (syst) ±0.02 (B),
;
B(B0→ψ(2S)π
+
π
−
)
÷
B(B0→J/ψπ
+
π
−
)
= 0.56± 0.07 (stat)±0.05 (syst)± 0.01 (B),
;
B(B0s
→ψ(2S)π
+
π
−
)
÷
B(B0s
→J/ψπ
+
π
−
)
= 0.34± 0.04 (stat)±0.03 (syst)± 0.01 (B),
where the third uncertainty corresponds to the uncertainties of the dilepton branching fractions of the J/ψ
and ψ(2S) meson decays
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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
Numerical bounds for the exterior degree of finite simple groups
No full texthe exterior degree of a finite group is the probability that a pair of elements chosen uniformly at random in satisfies the condition , where denotes the operator of nonabelian exterior square and is the neutral element in . The well known probability that two elements of commute (in the sense of Erd\H{o}s and Tur\'an) upper bounds . Of course, if and only if is abelian, but if and only if is cyclic, so we may detect cyclic groups as long as is close to (among abelian groups). We present new numerical results for the exterior degree of finite simple groups
Lepidophthalmus siriboia Felder & Rodrigues 1993
No full textLepidophthalmus siriboia Felder & Rodrigues, 1993 (Figure 20) Lepidophthalmus siriboia Felder & Rodrigues 1993: 367, figs. 2 e–h, 4 a–f, 5 a–g, 6 a–l. Material examined. Brazil, Ceará: 1 female, LIMCE-UFC 706, Icapuí, Manguezal da Barra Grande, mangrove, in burrow, suction pump, coll. A. Anker, 02.vi. 2012 [fcn 12 -092]; 1 female, LIMCE-UFC 670, Icapuí, Manguezal da Barra Grande, mangrove, mud flat, in burrow, suction pump, coll. P.P.G. Pachelle, 30.iii. 2013 [fcn PP 13 -001]; 1 male, LIMCE-UFC 889, Caucaia, Rio Barra Nova estuary, sand-mud flat, in burrow, suction pump, coll. P.P.G. Pachelle et al., 19.iii. 2014; 1 male, LIMCE-UFC 890, same collection data [fcn PP 14 -021]; 1 male, 1 female, MZUSP 32613, same collection data [fcn PP 14 -022, PP 14 -023]; 1 female, LIMCE-UFC 897, Paracuru, Rio Curu estuary, mud flat, in burrow, suction pump, coll. P.P.G. Pachelle, 29.iv. 2014 [fcn PP 14 -047]. Distribution. Western Atlantic: Brazil (Pará, Maranhão, Ceará, Paraíba, Pernambuco, Alagoas, Bahia) (Calado et al. 1998; Rodrigues & Shimizu 1998; Coelho et al. 2007; present study). Remarks. The present abundant material is the first record of Lepidophthalmus siriboia in Ceará, showing that the species is very common in estuarine and mangrove habitats of this state, e.g., in Mundaú (A. Anker & P.P.G. Pachelle, pers. obs.), Paracuru, Caucaia and Icapuí. This ghost-shrimp may be the primary host for the burrowassociated “commensal” alpheid shrimp Leptalpheus forceps (see above).Published as part of Pachelle, Paulo P. G., Anker, Arthur, Mendes, Cecili B. & Bezerra, Luis E. A., 2016, Decapod crustaceans from the state of Ceará, northeastern Brazil: an updated checklist of marine and estuarine species, with 23 new records, pp. 1-63 in Zootaxa 4131 (1) on pages 28-29, DOI: 10.11646/zootaxa.4131.1.1, http://zenodo.org/record/40029
THE TRANSITION OF MOLECULAR OXYGEN
No full textAuthor Institution: Research School of Physical Sciences and Engineering, The Australian National University; Molecular Physics Laboratory, SRI InternationalThe origin of the intensity of the transition of molecular oxygen, first observed recently by Eppink et al. [J. Chem. Phys. 108, 1305 (1998).], is discussed. It is shown that the transition borrows its intensity principally from the dipole-allowed transition, through spin-orbit mixing between the and states. Estimated continuum photoabsorption cross sections and discrete oscillator strengths for the system are presented
Measurement of the branching fraction
No full textThe B
0
s
→ J/ψK
0
S
branching fraction is measured in a data sample corresponding to 0.41 fb−1
of integrated luminosity collected with the LHCb detector at the LHC. This channel is sensitive to
the penguin contributions affecting the sin 2β measurement from B
0
→ J/ψK
0
S
. The time-integrated
branching fraction is measured to be B(B
0
s
→ J/ψK
0
S
) = (1.83±0.28)×10−5
. This is the most precise
measurement to date
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