5,453 research outputs found

    Measurement of muon momentum resolution of the ATLAS detector

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    The ATLAS detector has been designed to have good muon momentum resolution up to momenta in the TeV range. The muon momentum resolution of the ATLAS spectrometer has been measured with p-p collision data recorded in 2011. The measurement combines the di-muon mass resolution in J/\Psi->\mu\mu and Z->\mu\mu decays with measurements of the alignment accuracy of the detector based on straight muon tracks, which are acquired with special runs without magnetic field in the ATLAS detector.Comment: Presented at the 2011 Hadron Collider Physics symposium (HCP-2011), Paris, France, November 14-18 2011, 3 pages, 7 figure

    Cognitive Driver Distraction Improves Straight Lane Keeping: A Cybernetic Control Theoretic Explanation

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    Experimental data revealed that drivers performing a visual secondary task exhibited deteriorated lane keeping performance, but that the same drivers performing a cognitive secondary exhibited an improvement in lane keeping compared to baseline driving. In this paper we present a computational cybernetic driver model that characterizes the effect of difference in eye fixation durations between on and off road glances across the three task conditions on straight lane keeping performance. The model uses perceptual cues as control input, maintains internal representations of these cues across fixations through Bayesian updating, and each time a change in cue magnitude is perceived based on mechanisms akin to signal detection theory a change in control is applied. The model is shown to be able to capture the experimental results encouragingly well. The model also sheds light on the relative magnitude of lane keeping performance degradation caused by glancing away from the road and the fact that internal representations are degraded each time a saccade takes place. The adopted approach to modeling driver perception during and across fixations is expected to lead to new insights into the effects that various in-vehicle activities have on driving performance and risk

    Femininity and the Electric Chair: An Equal Protection Challenge to Texas\u27s Death Penalty Statute

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    Capital punishment in the United States appears to apply to only one class of citizens—men. Despite their significant proportional commission of homicides, women account for less than one percent of executions in America. This Note evaluates this trend in the context of a Fourteenth Amendment equal protection challenge to capital punishment in Texas, America’s staunchest death penalty supporter. It discusses issues of paternalism and gender theory as they relate to the Texas capital punishment statute and its application throughout the legal and political process. Finally, this Note argues that despite a series of constitutional obstacles, the Supreme Court should strike down the Texas death penalty statute based on its invidious gender discrimination

    O papel do darwinismo na legitimação da opressão

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    El capitalismo es el orden social y el sistema económico dominante que asegura la libertad económica en la disposición y el usufructo de la propiedad privada sobre el capital como herramienta de producción. Definido también como el sistema que consiste en la explotación del hombre por el hombre y siendo el sistema que rige la economía global, es responsable de las condiciones de desigualdad entre los hombres. Habermas afirma que el desarrollo científico y técnico se ha convertido en la misma base de legitimación del dominio capitalista. En este contexto es fundamental remarcar el papel del darwinismo, que desde sus orígenes fue una justificación natural de la explotación entre los hombres y continúa hoy en día como mecanismo de legitimización y racionalización de la opresión y del sometimiento de la libertad del hombre a la libertad del mercado.O capitalismo é a ordem social e o sistema econômico dominante que garante a liberdade econômica na disposição e fruição da propriedade privada sobre o capital como ferramenta de produção. Definido também como o sistema que consiste na exploração do homem pelo homem e sendo o sistema que rege a economia global, é responsável pelas condições de desigualdade entre os homens. Habermas afirma que o desenvolvimento científico e técnico transformou-se na mesma base de legitimação do domínio capitalista. Nesse contexto, é fundamental salientar o papel do darwinismo que, desde suas origens, foi uma justificativa natural da exploração entre os homens e se mantém atualmente como mecanismo de legitimação e racionalização da opressão e da submissão da liberdade do homem diante da liberdade do mercado.Fil: Salvucci, Emiliano Jesus. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Ciencia y Tecnología de Alimentos Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Ciencia y Tecnología de Alimentos Córdoba; Argentin

    Instituciones políticas y crecimiento económico en Latinoamérica

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    Editada en la Fundación Empresa PúblicaPublicad

    Consequences of Biome Depletion

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    El microbioma constituye el conjunto de microorganismos asociados a un hospedero principal. Es una parte integral del superorganismo que integran los microorganismos y el hospedero y éstos han coevolucionado desde los primeros días de la existencia de la especie humana. La modificación del microbioma, sumado a los cambios en los há- bitos sociales y alimentarios del ser humano a lo largo de su historia biológica ha llevado a la emergencia de numerosas enfermedades. La visión darwinista de la naturaleza que considera a la competencia como motor evolutivo y el reduccionismo como enfoque, impiden un acertado abordaje del estudio evolutivo y la interpretación de la naturaleza. Enfoques holísticos, desprendidos de conceptos estáticos y dogmáticos, permiten un abordaje más certero, novedoso y en contacto con los hechos. Así, la reconstitución del microbioma surge como una terapia fundamental ante la emergencia de enfermedades causadas por la continua pérdida del mismo.The human microbiome is an integral part of the superorganism together with their host and they have co-evolved since the early days of the existence of the human species. The modification of the microbiome as a result changes in food and social habits of human beings throughout their life history has led to the emergence of many diseases. In contrast with the darwinian view of nature of selfishness and competence, new holistic approaches are rising. Under these views, the reconstitution of the microbiome comes out as a fundamental therapy for emerging diseases related to biome depletion.Fil: Salvucci, Emiliano Jesus. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin

    Five centuries of Latin American income inequality

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    Special Issue on Latin American InequalityMost analysts of the modern Latin American economy believe that it has always had very high levels of inequality. Indeed, some have argued that high inequality appeared very early in the post-conquest Americas, and that this fact supported rent-seeking and anti-growth institutions that help explain the disappointing growth performance we observe there even today. This paper argues to the contrary. Compared with the rest of the world, Latin American inequality was not high either in pre-conquest 1491 or in the post-conquest decades following 1492. Indeed, it was not even high in the mid-19th century just before Latin America’s belle e´poque. It only became high thereafter. Historical persistence in Latin American inequality is a myth.La mayoría de los análisis sobre la economía latinoamericana contemporánea creen que siempre ha tenido muy altos niveles de desigualdad. A decir verdad, algunos han argumentado que los altos niveles de desigualdad aparecieron en épocas muy tempranas en la América posterior a la Conquista. Esto supondría la existencia de instituciones buscadoras de renta y no propiciatorias del crecimiento lo que nos ayudaría a explicar los problemas de desarrollo que observamos incluso hoy en día. Este artículo argumenta lo contrario. Comparada con el resto del mundo, la desigualdad en Latinoamérica no era alta en los años anteriores a la Conquista de 1491, y no fue alta en las décadas posteriores que siguieron a 1492. En realidad, no fue alta a mitad del siglo XIX en los años anteriores a la belle époque en Latinoamérica. Sólo llegó a ser alta posteriormente. La persistencia histórica de la desigualdad en Latinoamérica es un mito

    Effects of food price shocks on child malnutrition:The Mozambican experience 2008/2009

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    A propitiously timed household survey carried out in Mozambique over the period 2008/2009 permits us to study the relationship between shifts in food prices and child nutrition status in a low income setting. We focus on weight-for-height and weight-for-age in different survey quarters characterized by very different food price inflation rates. Using propensity score matching techniques, we find that these nutrition measures, which are sensitive in the short run, improve significantly in the fourth quarter of the survey, when the inflation rate for basic food products is low, compared to the first semester or three quarters, when food price inflation was generally high. The prevalence of underweight, in particular, falls by about 40 percent. We conclude that the best available evidence points to food penury, driven by the food and fuel price crisis combined with a short agricultural production year, as substantially increasing malnutrition amongst under-five children in Mozambique.</p
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