Suchergebnisse

Este artículo examina las prácticas que promueven la participación electoral en el contexto de la educación cívico-ciudadana en Chile. Se argumenta que bajo voto voluntario es necesario promover este hábito como parte esencial de una cultura cívica funcional a la democracia. Mediante modelos de regresión lineal se compara la influencia de diversas prácticas sobre la participación electoral en comparación con otras dimensiones de la ciudadanía. La discusión en clases, el clima del establecimiento y las elecciones estudiantiles favorecen la participación, mientras que el rol del conocimiento cívico y los profesores permanece confuso. Se concluye presentando recomendaciones de políticas públicas e invitando a reflexionar sobre lo que se espera de la formación ciudadana en las escuelas.

Este artículo examina las prácticas que promueven la participación electoral en el contexto de la educación cívico-ciudadana en Chile. Se argumenta que bajo voto voluntario es necesario promover este hábito como parte esencial de una cultura cívica funcional a la democracia. Mediante modelos de regresión lineal se compara la influencia de diversas prácticas sobre la participación electoral en comparación con otras dimensiones de la ciudadanía. La discusión en clases, el clima del establecimiento y las elecciones estudiantiles favorecen la participación, mientras que el rol del conocimiento cívico y los profesores permanece confuso. Se concluye presentando recomendaciones de políticas públicas e invitando a reflexionar sobre lo que se espera de la formación ciudadana en las escuelas.

Science, Technology and Innovation Plan of the Principality of Asturias (Spain) [FC-GRUPIN-IDI/2018/000225]; European Regional Development Fund (ERDF), European Union

The Male Warrior Hypothesis (MWH) establishes that men's psychology has been shaped by inter-group competition to acquire and protect reproductive resources. In this context, sex-specific selective pressures would have favored cooperation with the members of one's group in combination with hostility towards outsiders. We investigate the role of developmental testosterone, as measured indirectly through static markers of prenatal testosterone (2D:4D digit ratio) and pubertal testosterone (body musculature and facial masculinity), on both cooperation and aggressive behavior in the context of intergroup conflict among men. Supporting the MWH, our results show that the intergroup conflict scenario promotes cooperation within group members and aggression toward outgroup members. Regarding the hormonal underpinnings of this phenomenon, we find that body musculature is positively associated with aggression and cooperation, but only for cooperation when context (inter-group competition) is taken into account. Finally, we did not find evidence that the formidability of the group affected individual rates of aggression or cooperation, controlling for individual characteristics ; Research was funded by a Regular FONDECYT project (#1170513) to J.A.M.R. and a FONDECYT Iniciación project (#11181293) to P.P. from the government of Chile

[EN] High pressure xenon Time Projection Chambers (TPC) based on secondary scintillation (electroluminescence) signal amplification are being proposed for rare event detection such as directional dark matter, double electron capture and double beta decay detection. The discrimination of the rare event through the topological signature of primary ionisation trails is a major asset for this type of TPC when compared to single liquid or double-phase TPCs, limited mainly by the high electron diffusion in pure xenon. Helium admixtures with xenon can be an attractive solution to reduce the electron diffu- sion significantly, improving the discrimination efficiency of these optical TPCs. We have measured the electroluminescence (EL) yield of Xe-He mixtures, in the range of 0 to 30% He and demonstrated the small impact on the EL yield of the addition of helium to pure xenon. For a typical reduced electric field of 2.5 kV/cm/bar in the EL region, the EL yield is lowered by similar to 2%, 3%, 6% and 10% for 10%, 15%, 20% and 30% of helium concentration, respectively. This decrease is less than what has been obtained from the most recent simulation framework in the literature. The impact of the addition of helium on EL statistical fluctuations is negligible, within the experimental uncertainties. The present results are an important benchmark for the simulation tools to be applied to future optical TPCs based on Xe-He mixtures. ; The NEXT Collaboration acknowledges support from the following agencies and institutions: the European Research Council (ERC) under the Advanced Grant 339787-NEXT; the European Union's Framework Programme for Research and Innovation Horizon 2020 (2014-2020) under the Marie Sklodowska-Curie Grant Agreements No. 674896, 690575 and 740055; the Ministerio de Economa y Competitividad of Spain under grants FIS2014-53371-C04, RTI2018-095979, the Severo Ochoa Program SEV-2014-0398 and the Mara de Maetzu Program MDM-2016-0692; the GVA of Spain under grants PROMETEO/2016/120 and SEJI/2017/011; the ...

1 18 4 ; S ; Advanced Photonix, Inc., 1240 Avenida Acaso, Camarillo, CA 93012, U.S.A. . ; [EN] High pressure xenon Time Projection Chambers (TPC) based on secondary scintillation (electroluminescence) signal amplification are being proposed for rare event detection such as directional dark matter, double electron capture and double beta decay detection. The discrimination of the rare event through the topological signature of primary ionisation trails is a major asset for this type of TPC when compared to single liquid or double-phase TPCs, limited mainly by the high electron diffusion in pure xenon. Helium admixtures with xenon can be an attractive solution to reduce the electron diffu- sion significantly, improving the discrimination efficiency of these optical TPCs. We have measured the electroluminescence (EL) yield of Xe-He mixtures, in the range of 0 to 30% He and demonstrated the small impact on the EL yield of the addition of helium to pure xenon. For a typical reduced electric field of 2.5 kV/cm/bar in the EL region, the EL yield is lowered by similar to 2%, 3%, 6% and 10% for 10%, 15%, 20% and 30% of helium concentration, respectively. This decrease is less than what has been obtained from the most recent simulation framework in the literature. The impact of the addition of helium on EL statistical fluctuations is negligible, within the experimental uncertainties. The present results are an important benchmark for the simulation tools to be applied to future optical TPCs based on Xe-He mixtures. The NEXT Collaboration acknowledges support from the following agencies and institutions: the European Research Council (ERC) under the Advanced Grant 339787-NEXT; the European Union's Framework Programme for Research and Innovation Horizon 2020 (2014-2020) under the Marie Sklodowska-Curie Grant Agreements No. 674896, 690575 and 740055; the Ministerio de Economa y Competitividad of Spain under grants FIS2014-53371-C04, RTI2018-095979, the Severo Ochoa Program SEV-2014-0398 and the Mara de Maetzu Program ...