1,432 research outputs found

    Ascenso de los discursos de extrema derecha en Chile: una aproximación desde la teoría crítica

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    Considering the political and social contingency at the international level nowadays, but with respect to the Chilean reality, we have proposed to interpret the rise of extreme right-wing and neo-fascist discourses. To address this problem, some guidelines of psychoanalytic thought applied to the field of culture were used, which from an early date addressed the problem of interpreting sociocultural phenomena, recognizing a relationship of imbrication and continuity between the conditions of culture, the social functioning, and the ways in which these phenomena find a place of embodiment in the experience of the subject. Within this framework of interpretation, we have opted for the validity of the concepts elaborated by authors linked to critical theory, with special emphasis on the ideas established by Reich, Adorno, and Benjamin, based on their receptions of Freudian theory.Tomando en consideración la contingencia político-social actual, a nivel internacional, pero en particular respecto de la realidad chilena, nos hemos propuesto interpretar el ascenso de los discursos de extrema derecha y neofascistas. Para abordar tal problemática se recurrió a algunos lineamientos del pensamiento psicoanalítico aplicado al campo de la cultura, el cual abordó desde temprana data el problema de la interpretación de fenómenos socioculturales, dando cuenta de una relación de imbricación y continuidad entre las condiciones de la cultura, el funcionamiento social y los modos en que estos fenómenos encuentran un lugar de encarnación en la experiencia del sujeto. Dentro de este marco de interpretación hemos apostado por la vigencia de los conceptos elaborados por autores vinculados a la teoría crítica, con especial énfasis en las ideas que Reich, Adorno y Benjamin establecieron a partir de sus particulares recepciones de la teoría freudiana

    Aprovechamiento y respuesta productiva de ovinos en una pastura de Agropiros en la Patagonia Austral

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    En el sur de Santa Cruz se desarrolló un trabajo con el objetivo de evaluar la eficiencia del aprovechamiento y la respuesta productiva de corderos/as y ovejas de cría con dos niveles contrastantes de carga animal en una pastura mezcla de agropiros introducidos de Canadá desde el 10/Ene-28/Dic al 14-21/Feb de las temporadas 2016-2017 y 2017-2018, respectivamente. En tres sectores de la pastura se realizaron mediciones de plantas logradas por m2 y cobertura aérea vegetal, y en las fechas inicial y final del uso se determinó la altura de plantas (AP), la biomasa aérea (agropiros + inter-coironal) por sector y total ajustada disponible y las fracciones vivo y muerto del material cosechado. Al final del pastoreo, se calculó la eficiencia de utilización mediante fórmula. El trabajo incluyó registros de lluvias y temperaturas. En ambas categorías ovinas, se registró el peso vivo (PV) inicial y final (I y F), ganancia de PV total (GPVT) y diaria (GPVD) y se establecieron rangos de PVI y PVF. En las ovejas se midió la condición corporal (CC) I y F. El análisis estadístico relacionó la biomasa aérea disponible (BADisp) I y F de los agropiros por sector con la AP mediante correlaciones. Al final del pastoreo la AP y la BADisp disminuyeron conforme el forraje cosechado en cada sector de la pastura. En general, la eficiencia de utilización fue superior en el sector más productivo. Hubo una respuesta contrastante en el desempeño productivo de los corderos/as en función de la carga animal impuesta en ambas temporadas. Se concluye la necesidad de lograr un mejor ajuste de éste último parámetro que evite una excesiva defoliación de plantas, pero a su vez permita un mayor aprovechamiento de este recurso forrajero con ganado ovino.EEA Santa CruzFil: Utrilla, Víctor Ricardo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz. Grupo Producción Agropecuaria; Argentina.Fil: Clifton, Guillermo Raimundo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz. Grupo Producción Agropecuaria; Argentina.Fil: Barría, Daniel Osvaldo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz. Campo Experimental Potrok Aike; Argentina.Fil: Vargas, Paola Patricia. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz. Grupo Producción Agropecuaria; Argentina.Fil: Andrade, Miguel Alberto. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz. Grupo Producción Agropecuaria; Argentina.Fil: Gallardo, Rodrigo Martin. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz. Grupo Producción Agropecuaria; Argentina.Fil: Nuñez, Mario Del Corazón de Jesus. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz. Campo Experimental Potrok Aike; Argentina

    Non-capsulated and capsulated Haemophilus influenzae in children with acute otitis media in Venezuela: a prospective epidemiological study

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    <p>Abstract</p> <p>Background</p> <p>Non-typeable <it>Haemophilus influenzae </it>(NTHi) and <it>Streptococcus pneumoniae </it>are major causes of bacterial acute otitis media (AOM). Data regarding AOM are limited in Latin America. This is the first active surveillance in a private setting in Venezuela to characterize the bacterial etiology of AOM in children < 5 years of age.</p> <p>Methods</p> <p>Between December 2008 and December 2009, 91 AOM episodes (including sporadic, recurrent and treatment failures) were studied in 87 children enrolled into a medical center in Caracas, Venezuela. Middle ear fluid samples were collected either by tympanocentesis or spontaneous otorrhea swab sampling method. Standard laboratory and microbiological techniques were used to identify bacteria and test for antimicrobial resistance. The results were interpreted according to Clinical Laboratory Standards Institute (CLSI) 2009 for non-meningitis isolates. All statistical analyses were performed using SAS 9.1 and Microsoft Excel (for graphical purposes).</p> <p>Results</p> <p>Overall, bacteria were cultured from 69.2% (63 of the 91 episodes); at least one pathogen (<it>S. pneumoniae, H. influenzae, S. pyogenes </it>or <it>M. catarrhalis</it>) was cultured from 65.9% (60/91) of episodes. <it>H. influenzae </it>(55.5%; 35/63 episodes) and <it>S. pneumoniae </it>(34.9%; 22/63 episodes) were the most frequently reported bacteria. Among <it>H. influenzae </it>isolates, 62.9% (22/35 episodes) were non-capsulated (NTHi) and 31.4% (11/35 episodes) were capsulated including types d, a, c and f, across all age groups. Low antibiotic resistance for <it>H. influenzae </it>was observed to amoxicillin/ampicillin (5.7%; 2/35 samples). NTHi was isolated in four of the six <it>H. influenzae </it>positive samples (66.7%) from recurrent episodes.</p> <p>Conclusions</p> <p>We found <it>H. influenzae </it>and <it>S. pneumoniae </it>to be the main pathogens causing AOM in Venezuela. Pneumococcal conjugate vaccines with efficacy against these bacterial pathogens may have the potential to maximize protection against AOM.</p

    Combined Forward-Backward Asymmetry Measurements in Top-Antitop Quark Production at the Tevatron

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    The CDF and D0 experiments at the Fermilab Tevatron have measured the asymmetry between yields of forward- and backward-produced top and antitop quarks based on their rapidity difference and the asymmetry between their decay leptons. These measurements use the full data sets collected in proton-antiproton collisions at a center-of-mass energy of s=1.96\sqrt s =1.96 TeV. We report the results of combinations of the inclusive asymmetries and their differential dependencies on relevant kinematic quantities. The combined inclusive asymmetry is AFBttˉ=0.128±0.025A_{\mathrm{FB}}^{t\bar{t}} = 0.128 \pm 0.025. The combined inclusive and differential asymmetries are consistent with recent standard model predictions

    Optimasi Portofolio Resiko Menggunakan Model Markowitz MVO Dikaitkan dengan Keterbatasan Manusia dalam Memprediksi Masa Depan dalam Perspektif Al-Qur`an

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    Risk portfolio on modern finance has become increasingly technical, requiring the use of sophisticated mathematical tools in both research and practice. Since companies cannot insure themselves completely against risk, as human incompetence in predicting the future precisely that written in Al-Quran surah Luqman verse 34, they have to manage it to yield an optimal portfolio. The objective here is to minimize the variance among all portfolios, or alternatively, to maximize expected return among all portfolios that has at least a certain expected return. Furthermore, this study focuses on optimizing risk portfolio so called Markowitz MVO (Mean-Variance Optimization). Some theoretical frameworks for analysis are arithmetic mean, geometric mean, variance, covariance, linear programming, and quadratic programming. Moreover, finding a minimum variance portfolio produces a convex quadratic programming, that is minimizing the objective function ðð¥with constraintsð ð 𥠥 ðandð´ð¥ = ð. The outcome of this research is the solution of optimal risk portofolio in some investments that could be finished smoothly using MATLAB R2007b software together with its graphic analysis

    Search for heavy resonances decaying to two Higgs bosons in final states containing four b quarks

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    A search is presented for narrow heavy resonances X decaying into pairs of Higgs bosons (H) in proton-proton collisions collected by the CMS experiment at the LHC at root s = 8 TeV. The data correspond to an integrated luminosity of 19.7 fb(-1). The search considers HH resonances with masses between 1 and 3 TeV, having final states of two b quark pairs. Each Higgs boson is produced with large momentum, and the hadronization products of the pair of b quarks can usually be reconstructed as single large jets. The background from multijet and t (t) over bar events is significantly reduced by applying requirements related to the flavor of the jet, its mass, and its substructure. The signal would be identified as a peak on top of the dijet invariant mass spectrum of the remaining background events. No evidence is observed for such a signal. Upper limits obtained at 95 confidence level for the product of the production cross section and branching fraction sigma(gg -> X) B(X -> HH -> b (b) over barb (b) over bar) range from 10 to 1.5 fb for the mass of X from 1.15 to 2.0 TeV, significantly extending previous searches. For a warped extra dimension theory with amass scale Lambda(R) = 1 TeV, the data exclude radion scalar masses between 1.15 and 1.55 TeV

    An embedding technique to determine ττ backgrounds in proton-proton collision data

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    An embedding technique is presented to estimate standard model tau tau backgrounds from data with minimal simulation input. In the data, the muons are removed from reconstructed mu mu events and replaced with simulated tau leptons with the same kinematic properties. In this way, a set of hybrid events is obtained that does not rely on simulation except for the decay of the tau leptons. The challenges in describing the underlying event or the production of associated jets in the simulation are avoided. The technique described in this paper was developed for CMS. Its validation and the inherent uncertainties are also discussed. The demonstration of the performance of the technique is based on a sample of proton-proton collisions collected by CMS in 2017 at root s = 13 TeV corresponding to an integrated luminosity of 41.5 fb(-1).Peer reviewe

    Measurement of the top quark mass using charged particles in pp collisions at root s=8 TeV

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    Measurement of t(t)over-bar normalised multi-differential cross sections in pp collisions at root s=13 TeV, and simultaneous determination of the strong coupling strength, top quark pole mass, and parton distribution functions

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    Bose-Einstein correlations of charged hadrons in proton-proton collisions at s\sqrt s = 13 TeV

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    Bose-Einstein correlations of charged hadrons are measured over a broad multiplicity range, from a few particles up to about 250 reconstructed charged hadrons in proton-proton collisions at s \sqrt{s} = 13 TeV. The results are based on data collected using the CMS detector at the LHC during runs with a special low-pileup configuration. Three analysis techniques with different degrees of dependence on simulations are used to remove the non-Bose-Einstein background from the correlation functions. All three methods give consistent results. The measured lengths of homogeneity are studied as functions of particle multiplicity as well as average pair transverse momentum and mass. The results are compared with data from both CMS and ATLAS at s \sqrt{s} = 7 TeV, as well as with theoretical predictions.[graphic not available: see fulltext]Bose-Einstein correlations of charged hadrons are measured over a broad multiplicity range, from a few particles up to about 250 reconstructed charged hadrons in proton-proton collisions at s=\sqrt{s} = 13 TeV. The results are based on data collected using the CMS detector at the LHC during runs with a special low-pileup configuration. Three analysis techniques with different degrees of dependence on simulations are used to remove the non-Bose-Einstein background from the correlation functions. All three methods give consistent results. The measured lengths of homogeneity are studied as functions of particle multiplicity as well as average pair transverse momentum and mass. The results are compared with data from both CMS and ATLAS at s=\sqrt{s} = 7 TeV, as well as with theoretical predictions
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