347 research outputs found

    Identidad: Pertenencia y Participación.

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    Reception of the Second Vatican Council in Tucumán, 1965-1973

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    A mediados de la década de 1960 finalizaba el Concilio Vaticano II, uno de los hitos más importantes del mundo católico del siglo XX. Los documentos elaborados plantearon una renovación de ciertos aspectos en lo litúrgico así como también en la concepción de la misión pastoral, que no significaron necesariamente una ruptura sino más bien un aggiornamiento ante los cambios culturales, sociales y políticos de toda la primera mitad del siglo y que parecían llegar a un punto de efervescencia en la década del '60. En este caso nos interesa analizar las repercusiones del Concilio Vaticano II en el mundo católico tucumano, así como los cambios y las continuidades que se pueden reconocer a partir de este hecho. Cabe destacar que Tucumán vivía, en el período que aquí se abarca, un momento particular con respecto al mundo eclesiástico así como a la realidad político-económica. A partir de lo señalado, entonces, nos interesa dar cuenta de las voces que se superponen en el seno de un catolicismo heterogéneo, y la articulación entre el discurso renovado de la Iglesia con la realidad local.The Vatican Council II, one of de most important landmarks of twentieth century Catholic world, ended in the mid 1960s. Te documents produced proposed a re- newal in some liturgical aspects as well as in the conception of the pastoral mission. Tey did not necessarily mean a break but rather an updating to acknowledge the cultural, social and political changes of the frst half of the century that seemed to reach a point of efervescence in the ‘60s. In this case we want to analyze the impact of the Second Vatican Council in the catho- lic world of Tucuman, and the alterations and continuities that can be recognized from this event. It should be noted that Tucumán was liv- ing a particular moment with regard to the ecclesiastical world as well as to the politi- cal and economic reality in the period cov- ered here. Thus, from these data, we want to account for overlapping voices within heteroge- neous Catholicism, and the articulation be- tween the Church’s renewed dicourse and local reality.Fil: Schkolnik, Iris. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Saavedra 15. Instituto de Historia Argentina y Americana ; Argentin

    El mundo del trabajo y la revista Criterio, un vínculo conflictivo (1966-1979)

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    En el siguiente trabajo indagamos la configuración discursiva de la revista Criterio sobre el mundo del trabajo durante la segunda mitad de la década de 1960. Los cambios producidos en el seno del catolicismo no fueron asimilados de manera uniforme por todo el espectro eclesiástico y laico. En general, los análisis que abordan las relaciones entre el mundo del trabajo y el catolicismo en dicho periodo han estudiado a los sectores más radicalizados. Criterio, en contraste, se presenta como representante de un catolicismo moderado. La publicación indica fuertemente la necesidad de articular los intereses y de moderar los espíritus en pos de un proceso que recién se desplegaba, la Revolución Argentina. En concreto, Criterio no se dirigía a los trabajadores o a los sindicatos, sino claramente a las cumbres institucionales de la clase empresarial. En efecto, la publicación delineaba un paternalismo empresario de corte modernizante.In this paper we inquire into the discursive configuration of Criterio catholic magazine about the realm of work during the second half of the 1960s. The changes within Catholicism were not uniformly assimilated through all ecclesiastical and secular spectrums. In general, the previous analyses that have addressed the relationship between the realm of work and Catholicism in this period have usually studied the most radical scopes. Criterio, in contrast, is presented as representative of a moderate Catholicism. & e publication strongly indicates the need to articulate interests and moderate spirits after a processthat was just unfolding, the Argentinean Revolution. Specifically, Criterio was not addressed at workers or unions, but at the institutional summits of the business class. Indeed, the publication depicted an entrepreneurial paternalism with some modernizing aspects.Fil: Pattin, Sebastian Pedro. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Saavedra 15. Instituto de Historia Argentina y Americana "Dr. Emilio Ravignani". Universidad de Buenos Aires. Facultad de Filosofía y Letras. Instituto de Historia Argentina y Americana "Dr. Emilio Ravignani"; ArgentinaFil: Schkolnik, Iris. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Saavedra 15. Instituto de Historia Argentina y Americana "Dr. Emilio Ravignani". Universidad de Buenos Aires. Facultad de Filosofía y Letras. Instituto de Historia Argentina y Americana "Dr. Emilio Ravignani"; Argentin

    The effect of wavefront aberrations in atom interferometry

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    Wavefront aberrations are one of the largest uncertainty factors in present atom interferometers. We present a detailed numerical and experimental analysis of this effect based on measured aberrations from optical windows. By placing windows into the Raman beam path of our atomic gravimeter, we verify for the first time the induced bias in very good agreement with theory. Our method can be used to reduce the uncertainty in atomic gravimeters by one order of magnitude resulting in an error of less than 3×1010g3\times 10^{-10}\,g and it is suitable in a wide variety of atom interferometers with thermal or ultra cold atoms. We discuss the limitations of our method, potential improvements and its role in future generation experiments.Comment: Applied Physics B, 201

    High-Fidelity Control, Detection, and Entanglement of Alkaline-Earth Rydberg Atoms

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    Trapped neutral atoms have become a prominent platform for quantum science, where entanglement fidelity records have been set using highly excited Rydberg states. However, controlled two-qubit entanglement generation has so far been limited to alkali species, leaving the exploitation of more complex electronic structures as an open frontier that could lead to improved fidelities and fundamentally different applications such as quantum-enhanced optical clocks. Here, we demonstrate a novel approach utilizing the two-valence electron structure of individual alkaline-earth Rydberg atoms. We find fidelities for Rydberg state detection, single-atom Rabi operations and two-atom entanglement that surpass previously published values. Our results pave the way for novel applications, including programmable quantum metrology and hybrid atom–ion systems, and set the stage for alkaline-earth based quantum computing architectures

    A compact and robust diode laser system for atom interferometry on a sounding rocket

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    We present a diode laser system optimized for laser cooling and atom interferometry with ultra-cold rubidium atoms aboard sounding rockets as an important milestone towards space-borne quantum sensors. Design, assembly and qualification of the system, combing micro-integrated distributed feedback (DFB) diode laser modules and free space optical bench technology is presented in the context of the MAIUS (Matter-wave Interferometry in Microgravity) mission. This laser system, with a volume of 21 liters and total mass of 27 kg, passed all qualification tests for operation on sounding rockets and is currently used in the integrated MAIUS flight system producing Bose-Einstein condensates and performing atom interferometry based on Bragg diffraction. The MAIUS payload is being prepared for launch in fall 2016. We further report on a reference laser system, comprising a rubidium stabilized DFB laser, which was operated successfully on the TEXUS 51 mission in April 2015. The system demonstrated a high level of technological maturity by remaining frequency stabilized throughout the mission including the rocket's boost phase

    JOKARUS - Design of a compact optical iodine frequency reference for a sounding rocket mission

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    We present the design of a compact absolute optical frequency reference for space applications based on hyperfine transitions in molecular iodine with a targeted fractional frequency instability of better than 310143\cdot 10^{-14}. It is based on a micro-integrated extended cavity diode laser with integrated optical amplifier, fiber pigtailed second harmonic generation wave-guide modules, and a quasi-monolithic spectroscopy setup with operating electronics. The instrument described here is scheduled for launch end of 2017 aboard the TEXUS 54 sounding rocket as an important qualification step towards space application of iodine frequency references and related technologies. The payload will operate autonomously and its optical frequency will be compared to an optical frequency comb during its space flight

    Low molecular weight organic acids in aerosol particles from Rondônia, Brazil, during the biomass-burning, transition and wet periods

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    International audienceParticles from biomass burning and regional haze were sampled in Rondônia, Brazil, during dry, transition and wet periods from September to November 2002, as part of the LBA-SMOCC (Large-Scale Biosphere-Atmosphere Experiment in Amazonia ? Smoke, Aerosols, Clouds, Rainfall, and Climate) field campaign. Water soluble organic and inorganic compounds in bulk (High Volume and Stacked Filter Unit sampler) and size-resolved (Micro Orifice Uniform Deposit Impactor ? MOUDI) smoke samples were determined by ion chromatography. It was found that low molecular weight polar organic acids account for a significant fraction of the water soluble organic carbon (WSOC) in biomass burning aerosols (C2-C6 dicarboxylic acids reached up to 3.7% and one-ring aromatic acids reached up to 2% of fine fraction WSOC during burning period). Short dicarboxylic (C2-C6) acids are dominated by oxalic acid followed by malonic and succinic acids. The largest ionic species is ammonium sulfate (60?70% of ionic mass). It was found that most of the ionic mass is concentrated in submicrometer-sized particles. Based on the size distribution and correlations with K+, a known biomass burning tracer, it is suggested that many of the organic acids are directly emitted by vegetation fires. Concentrations of dicarboxylic acids in the front and back filters of high volume sampler were determined. Based on these measurements, it was concluded that in the neutral or slightly basic smoke particles typical of this region, dicarboxylic acids are mostly confined to the particulate phase. Finally, it is shown that the distribution of water soluble species shifts to larger aerosols sizes as the aerosol population ages and mixes with other aerosol types in the atmosphere

    Performance seeking control excitation mode

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    Flight testing of the performance seeking control (PSC) excitation mode was successfully completed at NASA Dryden on the F-15 highly integrated digital electronic control (HIDEC) aircraft. Although the excitation mode was not one of the original objectives of the PSC program, it was rapidly prototyped and implemented into the architecture of the PSC algorithm, allowing valuable and timely research data to be gathered. The primary flight test objective was to investigate the feasibility of a future measurement-based performance optimization algorithm. This future algorithm, called AdAPT, which stands for adaptive aircraft performance technology, generates and applies excitation inputs to selected control effectors. Fourier transformations are used to convert measured response and control effector data into frequency domain models which are mapped into state space models using multiterm frequency matching. Formal optimization principles are applied to produce an integrated, performance optimal effector suite. The key technical challenge of the measurement-based approach is the identification of the gradient of the performance index to the selected control effector. This concern was addressed by the excitation mode flight test. The AdAPT feasibility study utilized the PSC excitation mode to apply separate sinusoidal excitation trims to the controls - one aircraft, inlet first ramp (cowl), and one engine, throat area. Aircraft control and response data were recorded using on-board instrumentation and analyzed post-flight. Sensor noise characteristics, axial acceleration performance gradients, and repeatability were determined. Results were compared to pilot comments to assess the ride quality. Flight test results indicate that performance gradients were identified at all flight conditions, sensor noise levels were acceptable at the frequencies of interest, and excitations were generally not sensed by the pilot
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