973 resultados para Gustavo Rubio


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Most authors struggle to pick a title that adequately conveys all of the material covered in a book. When I first saw Applied Spatial Data Analysis with R, I expected a review of spatial statistical models and their applications in packages (libraries) from the CRAN site of R. The authors’ title is not misleading, but I was very pleasantly surprised by how deep the word “applied” is here. The first half of the book essentially covers how R handles spatial data. To some statisticians this may be boring. Do you want, or need, to know the difference between S3 and S4 classes, how spatial objects in R are organized, and how various methods work on the spatial objects? A few years ago I would have said “no,” especially to the “want” part. Just let me slap my EXCEL spreadsheet into R and run some spatial functions on it. Unfortunately, the world is not so simple, and ultimately we want to minimize effort to get all of our spatial analyses accomplished. The first half of this book certainly convinced me that some extra effort in organizing my data into certain spatial class structures makes the analysis easier and less subject to mistakes. I also admit that I found it very interesting and I learned a lot.

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We present measurements of Underlying Event observables in pp collisions at root s = 0 : 9 and 7 TeV. The analysis is performed as a function of the highest charged-particle transverse momentum p(T),L-T in the event. Different regions are defined with respect to the azimuthal direction of the leading (highest transverse momentum) track: Toward, Transverse and Away. The Toward and Away regions collect the fragmentation products of the hardest partonic interaction. The Transverse region is expected to be most sensitive to the Underlying Event activity. The study is performed with charged particles above three different p(T) thresholds: 0.15, 0.5 and 1.0 GeV/c. In the Transverse region we observe an increase in the multiplicity of a factor 2-3 between the lower and higher collision energies, depending on the track p(T) threshold considered. Data are compared to PYTHIA 6.4, PYTHIA 8.1 and PHOJET. On average, all models considered underestimate the multiplicity and summed p(T) in the Transverse region by about 10-30%.

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The ALICE experiment at the LHC has studied J/psi production at mid-rapidity in pp collisions at root s = 7 TeV through its electron pair decay on a data sample corresponding to an integrated luminosity L-int = 5.6 nb(-1). The fraction of J/psi from the decay of long-lived beauty hadrons was determined for J/psi candidates with transverse momentum p(t) > 1,3 GeV/c and rapidity vertical bar y vertical bar < 0.9. The cross section for prompt J/psi mesons, i.e. directly produced J/psi and prompt decays of heavier charmonium states such as the psi(2S) and chi(c) resonances, is sigma(prompt J/psi) (p(t) > 1.3 GeV/c, vertical bar y vertical bar < 0.9) = 8.3 +/- 0.8(stat.) +/- 1.1 (syst.)(-1.4)(+1.5) (syst. pol.) mu b. The cross section for the production of b-hadrons decaying to J/psi with p(t) > 1.3 GeV/c and vertical bar y vertical bar < 0.9 is a sigma(J/psi <- hB) (p(t) > 1.3 GeV/c, vertical bar y vertical bar < 0.9) = 1.46 +/- 0.38 (stat.)(-0.32)(+0.26) (syst.) mu b. The results are compared to QCD model predictions. The shape of the p(t) and y distributions of b-quarks predicted by perturbative QCD model calculations are used to extrapolate the measured cross section to derive the b (b) over bar pair total cross section and d sigma/dy at mid-rapidity.

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Fil: Castellino, Marta Elena. Universidad Nacional de Cuyo. Facultad de Filosofía y Letras

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Fil: Torchia Estrada, Juan Carlos.

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Fil: Zalazar, Oscar.

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En Arte, forma, sentido; La poesía de Daniel Devoto, Víctor Gustavo Zonana – Doctor en Letras por la Universidad Nacional de Cuyo e investigador del Conicet– incursiona una vez más en el rescate de voces que completan y profundizan el conocimiento de la generación poética argentina del ‘40, ya iniciado en libros anteriores como Sueños de un caminante solitario.

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El presente trabajo pretende abordar el análisis de la práctica ensayística del escritor platense Gustavo García Saraví (1920-1994). Este poeta consumado, además, incursionó en el cuento, la novela, el teatro, la radio, la prensa escrita, etc. De allí su amplio y rico bagaje para llevar adelante otros géneros. Se puede establecer un vínculo fuerte entre su producción poética y los ensayos que produjo, puesto que la temática a la que alude en ellos está referida a su concepción teórica de la producción poética y en particular, del soneto. Las problemáticas a trabajar serán, las marcadas influencias de la estilística española en G.G.S, así como también cuáles de esas características son retomadas, aprovechadas, reelaboradas, sobre todo si tenemos presente que el corpus ensayístico principal recala en la reflexión acerca de las condiciones de elaboración del soneto; y qué manifestaciones influyen y se perciben en el campo intelectual y en la práctica escrituraria del poeta/ensayista

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Fil: Obregón, Martín. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina.