749 research outputs found
Tettagalma Menon, new genus
No full text<i>Tettagalma</i> Menon, new genus <p> <b>Diagnosis.</b> Medium­sized (25 mm forewing length) tettigarctid; prominent costal margin; Rs with three branches; origin of MA branches proximal to nodal line; CuA strongly deflected anteriorly at nodal line; wide marginal membrane; marginal membrane bearing numerous, equidistant striae.</p> <p> <b>Etymology.</b> Genus­group name formed from a combination of <i>tetti</i> in reference to the family and <i>agalma</i> from the Greek present, gift, as the specimen was donated to the author.</p> <p> <b>Type locality and horizon.</b> Vicinity of Nova Olinda, Nova Olinda Member, Crato Formation.</p> <p> <b>Type species.</b> <i>Tettagalma striata</i> Menon new genus and species, by monotypy.</p>Published as part of <i>Menon, Federica, 2005, New record of Tettigarctidae (Insecta, Hemiptera, Cicadoidea) from the Lower Cretaceous of Brazil, pp. 53-58 in Zootaxa 1087</i> on page 54, DOI: <a href="http://zenodo.org/record/170508">10.5281/zenodo.170508</a>
Novel Dialogue 2.3: Because I Couldn't Be a Dancer: Sigrid Nunez and Tara Menon (JP)
No full textThe brilliant New York writer Sigrid Nunez's most recent novel is What Are You Going Through; her previous one, The Friend, (2018) won the National Book Award. She speaks with Tara Menon, of the Harvard English department, and author of a terrific article about Sigrid Nunez in the Sewanee Review. The conversation ranges widely and then plunges into depths. Because life is defined by grief and mourning, so too are my novels, says Nunez. She thinks her upbringing with immigrant parents who felt adrift from their homeland and her own "failure" as a dancer (recounted in her 1995 debut novel, A Feather on the Breath of God ) are the ferment from which her vocation as a writer arose. The question of genre is tossed around: "fictional memoir" perhaps, which gets confused (insultingly, Tara thinks!) with auto-fiction. But Sigrid is fascinated by establishing a reality that is entirely made-up ("not a single friend angry!"), yet also documentary in nature. Perhaps the best tag for her work is "essay novel": that allows one to do what Javier Marias calls "literary thinking." And there's a wonderfully non-Pavlovian answer to the treat question: sometimes you can just have the whiskey
A priori and a posteriori analysis of the hybrid two-level large-eddy simulation method for high Reynolds number complex flows
No full textWe present a priori and a posteriori analysis of the assumptions and predictions of the hybrid two-level large-eddy simulation (TLS-LES) method for high Reynolds number complex flows. The TLS-LES methodology is a multi-scale framework for simulation of turbulent flows in complex configurations at practically relevant Reynolds number. It additively combines the two-level simulation (TLS) model with a conventional large-eddy simulation (LES) approach by employing a static or dynamic blending function. In the present study, first we analyze the model assumptions employed by the TLS model to obtain the small-scale solution necessary for closure of the large-scale equations. Afterward, we analyze the large-scale and small-scale solutions to assess the predictive ability of the multi-scale framework for specific turbulence physics such as role of forward and backscatter of energy and presence of co- and counter-gradient diffusion. To perform these investigations, we consider cases with increasing degree of geometrical complexity, namely, flow in a periodic channel, flow past a bump placed on the lower surface of the channel and flow past a finite-span NACA0015 airfoil
Il bene del filosofo e il limite della città. Sulla politica filosofica di Leo Strauss
No full textThe intention of this paper is to show how Leo Straussʼ mature writings respond to the twofold necessity of political philosophy: contributing, at the same time, to the good of the city and to the good of the philosophers. In the first place, it will try to prove this point by analyzing in detail the Introduction to On Tyranny (1948), which represents an essential step in order to understand the intention of the author. In the second place, it will tackle the problem of justice, that is, of natural right, by concentrating on the so called " tyrannical teaching ". This teaching is a way to present a truth which the city cannot find acceptable, that is, an unpleasant truth concerning the irresoluble problem of justice and legitimacy. In conclusion, it will point to the tension between philosophy, i.e., search for knowledge, and the city, i.e., the realm of opinion. For the philosopher, as such, has to " corrupt " the young in order to pursue his search for knowledge of the whole, or the nature of all things. Therefore, he weakens the city, since philosophizing implies unbelief in the gods of the city
Equivariant elliptic cohomology and twisted equivariant k-theory
No full textEquivariant elliptic cohomology and twisted equivariant K-theory are both related to the representations of loop groups. After making these relationships precise, we propose a map from twisted equivariant elliptic cohomology to twisted K-theory of the inertia stack using equivariant de Rham models. This proposal agrees with the Freed-Hopkins-Teleman q = 1 map from characters of representations of loop groups to distributions associated to twisted equivariant K-theory classes.Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2021-08-01The student, Dileep Menon, accepted the attached license on 2019-05-24 at 15:54.The student, Dileep Menon, submitted this Dissertation for approval on 2019-05-24 at 16:06.This Dissertation was approved for publication on 2019-05-28 at 10:50.DSpace SAF Submission Ingestion Package generated from Vireo submission #13991 on 2019-11-26 at 13:00:58Made available in DSpace on 2019-11-26T20:49:00Z (GMT). No. of bitstreams: 4
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Total Hadronic Cross Section And The Elastic Slope: An Almost Model-independent Connection
No full textAn almost model-independent parametrization for the ratio of the total cross section to the elastic slope, as function of the center of mass energy, is introduced. The analytical result is based on the approximate relation of this quantity with the ratio R of the elastic to total cross section and empirical fits to the R data from proton-proton scattering above 10 GeV, under the conditions of asymptotic unitarity and the black-disk limit. This parametrization may be useful in studies of extensive air showers and the determination of the proton-proton total cross section from proton-air production cross section in cosmic-ray experiments. © 2012 Elsevier B.V.880111Ulrich, R., Engel, R., Müller, S., Schüssler, F., Unger, M., (2009) Nucl. Phys. B (Proc. Suppl.), 196, p. 335Sokolsky, P., Introduction to Ultrahigh Energy Cosmic Ray Physics (1989) Frontiers in Physics, 76. , Addison-Wesley, New YorkEngel, R., Gaisser, T.K., Lipari, P., Stanev, T., (1998) Phys. Rev. D, 58, p. 014019Engel, R., (2000) Nucl. Phys. B (Proc. Suppl.), 82, p. 221Ávila, R.F., Luna, E.G.S., Menon, M.J., (2003) Phys. Rev. D, 67, p. 054020Glauber, R., (1955) Phys. Rev., 100, p. 629Glauber, R., Matthiae, G., (1970) Nucl. Phys. B, 21, p. 135Matthiae, G., (1994) Rep. Prog. Phys., 57, p. 743Cudell, J.R., (2002) Phys. Rev. Lett., 89 (20), p. 201801. , COMPETE CollaborationCudell, J.R., (2002) Phys. Rev. D, 65, p. 074024. , COMPETE CollaborationNakamura, K., (2010) J. Phys. G, 37, p. 075021. , Particle Data GroupAntchev, G., (2011) Europhys. Lett., 96, p. 21002. , TOTEM CollaborationMartini, A.F., Menon, M.J., Montanha, J., (2004) Braz. J. Phys., 34, p. 263Eden, R.J., (1971) Rev. Mod. Phys., 43, p. 15Froissart, M., (1961) Phys. Rev., 123, p. 1053Martin, A., (1966) Nuovo Cimento A, 42, p. 930Lukaszuk, L., Martin, A., (1967) Nuovo Cimento A, 52, p. 122MacDowell, S.W., Martin, A., (1964) Phys. Rev. B, 135, p. 960Block, M.M., (2006) Phys. Rep., 436, p. 71Block, M.M., Halzen, F., (2011) Phys. Rev. Lett., 107, p. 212002Chou, T.T., Yang, C.N., (1968) Phys. Rev. D, 170, p. 1591Bourrely, C., Soffer, J., Wu, T.T., (1984) Nucl. Phys. B, 247, p. 15Bourrely, C., Soffer, J., Wu, T.T., (1987) Z. Phys. C, 37, p. 369Troshin, S.M., Tyurin, N.E., (2007) Int. J. Mod. Phys. A, 22, p. 4437Troshin, S.M., Tyurin, N.E., (1993) Phys. Lett. B, 316, p. 175http://root.cern.ch/drupal/, URL:http://root.cern.ch/root/html/TMinuit.htmlBevington, P.R., Robinson, D.K., (1992) Data Reduction and Error Analysis for the Physical Sciences, , McGraw-Hill, Boston, Massachusettshttp://durpdg.dur.ac.uk/HEPDATA/REAC, Durham Reaction DatabaseAzimov, Y.I., (2011) Phys. Rev. D, 84, p. 056012Fagundes, D.A., Menon, M.J., Silva, P.V.R.G., Total hadronic cross section data and the Froissart-Martin bound, , arxiv:1112.4704Conceição, R., Dias de Deus, J., Pimenta, M., Proton-proton cross-sections: The interplay between density and radius, , arxiv:1107.091
An Updated Analysis On The Rise Of The Hadronic Total Cross-section At The Lhc Energy Region
No full textA forward amplitude analysis on pp and elastic scattering above 5 GeV is presented. The dataset includes the recent high-precision TOTEM measurements of the pp total and elastic (integrated) cross-sections at 7 TeV and 8 TeV. Following previous works, the leading high-energy contribution for the total cross-section (σtot) is parametrized as lnγ(s/sh), where γ and s h are free real fit parameters. Singly-subtracted derivative dispersion relations are used to connect σtot and the rho parameter (ρ) in an analytical way. Different fit procedures are considered, including individual fits to σtot data, global fits to σtot and ρ data, constrained and unconstrained data reductions. The results favor a rise of the σtot faster than the log-squared bound by Froissart and Martin at the LHC energy region. The parametrization for σtot is extended to fit the elastic cross-section (σel) data with satisfactory results. The analysis indicates an asymptotic ratio σel/σ tot consistent with 1/3 (as already obtained in a previous work). A critical discussion on the correlation, practical role and physical implications of the parameters γ and sh is presented. The discussion confronts the 2002 prediction of σtot by the COMPETE Collaboration and the recent result by the Particle Data Group (2012 edition of the Review of Particle Physics). Some conjectures on possible implications of a fast rise of the proton-proton total cross-section at the highest energies are also presented. © 2013 World Scientific Publishing Company.2820Froissart, M., (1961) Phys. Rev., 123, p. 1053Martin, A., (1966) Nuovo Cimento A, 42, p. 930Martin, A., (1966) Nuovo Cimento A, 44, p. 1219Lukaszuk, L., Martin, A., (1967) Nuovo Cimento A, 52, p. 122Azimov, Ya.I., (2011) Phys. Rev. D, 84, p. 056012Azimov, Ya.I., Froissart Bounds for Amplitudes and Cross-sections at High Energies, , arXiv:1204.0984 [hep-ph]Azimov, Ya., What Is the Real Meaning of the Froissart Theorem?, , arXiv:1208.4304 [hep-ph]Cudell, J.R., (2002) Phys. Rev. D, 65, p. 074024. , COMPETE CollabCudell, J.R., (2002) Phys. Rev. Lett., 89, p. 201801. , COMPETE CollabIgi, K., Ishida, M., (2002) Phys. Rev. D, 66, p. 034023Igi, K., Ishida, M., (2005) Phys. Lett. B, 622, p. 286Block, M.M., Halzen, F., (2004) Phys. Rev. D, 70, p. 091901Block, M.M., Halzen, F., (2005) Phys. Rev. D, 72, p. 036006Nakamura, K., (2010) J. Phys. G: Nucl. Part. Phys., 37, p. 075021. , Particle Data GroupAntchev, G., (2011) Europhys. Lett., 95, p. 41001. , TOTEM CollabAntchev, G., (2011) Europhys. Lett., 96, p. 21002. , TOTEM CollabAntchev, G., (2012) Europhys. Lett., 98, p. 31002. , TOTEM CollabBeringer, J., (2012) Phys. Rev. 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Risk-reducing early salpingectomy and delayed oophorectomy as a two-staged alternative for primary prevention of ovarian cancer in women at increased risk: a commentary.
No full textThis is the peer reviewed version of the following article: Gaba, F. , Piek, J. , Menon, U. and Manchanda, R. (2019), Risk reducing early salpingectomy and delayed oophorectomy as a two staged alternative for primary prevention of ovarian cancer in increased risk women: a commentary. BJOG: Int J Obstet Gy. Accepted Author Manuscript. doi:10.1111/1471-0528.15651, which has been published in final form at https://doi.org/10.1111/1471-0528.15651. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Version
God on the hill and other stories
No full textWhat makes this book poignant and relevant is the counterpoint to archaeological narratives it posits. Though archaeologists tell us that these megalithic dolmens, menhirs and the like were funerary or commemorative structures, local villagers near the monuments insist that they were the houses of a now-extinct race of dwarves called Moriyas. The stories in this collection are inspired by actual monuments and sites in India. As architect-author Srikumar M Menon went along collecting data about the monuments, he could not help collecting stories too. Srikumar’s stories also draw attention to outdated theories on the development of disciplines such as the ‘history of architecture’. Legislation and barbed wire fencing are grossly inadequate to protect these primitive monuments that our prehistoric ancestors built
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