Los ritmos de las políticas CTI y de sus paradigmas tecno-económicos/organizacionales en ALC (1945–2030)

Se analiza el vínculo entre la estabilidad política de largo plazo y la eficiencia gubernamental a la hora de evaluar el desempeño de las políticas en ciencia, tecnología e innovación (CTI). Se mostrará que el impacto de dichas políticas CTI y sus instrumentos, dependerá altamente de las condiciones mencionadas. Dentro de un marco teórico de ciclos largos, se describirá la evolución de los paradigmas tecno-económicos y organizacionales (TEO) de las políticas CTI entre 1945 y 2016. Se enumerarán las actitudes societales predominantes en cada una de las cuatro fases de los dos paradigmas TEO que se desarrollaron durante el período analizado. Se mostrará que ALC está comenzando a atravesar por una fase sinérgica de acción del nuevo paradigma de ciencia de la sostenibilidad, similar a la del período 1960–1973 (donde surgió la Escuela Latinoamericana de Pensamiento en CyT marcada por el auge del modelo lineal de la ciencia). Determinadas las características de la fase política, económica y societal del futuro cercano (2016–2030), se formularán las restricciones y potencialidades que los sistemas nacionales investigación e innovación requieren para alcanzar las metas nacionales y regionales en CTI, vinculadas a los Objetivos de Desarrollo Sostenible (Objetivo 9

Ultraviolet Radiation Constraints around the Circumstellar Habitable Zones

Ultraviolet radiation is known to inhibit photosynthesis, induce DNA destruction and cause damage to a wide variety of proteins and lipids. In particular, UV radiation between 200-300 nm becomes energetically very damaging to most of the terrestrial biological systems. On the other hand, UV radiation is usually considered one of the most important energy source on the primitive Earth for the synthesis of many biochemical compounds and, therefore, essential for several biogenesis processes. In this work, we use these properties of the UV radiation to define the bounderies of an ultraviolet habitable zone. We also analyze the evolution of the UV habitable zone during the main sequence stage of the star. We apply these criteria to study the UV habitable zone for those extrasolar planetary systems that were observed by the International Ultraviolet Explorer (IUE). We analyze the possibility that extrasolar planets and moons could be suitable for life, according to the UV constrains presented in this work and other accepted criteria of habitability (liquid water, orbital stability, etc.).Comment: 34 pages, 8 figures Accepted for publication by Icaru

UV habitable zones around M stars

During the last decade, there was a paradigm-shift in order to consider terrestrial planets within liquid-water habitable zones (LW-HZ) around M stars, as suitable places for the emergence and evolution of life. Here we analyze the influence of UV boundary conditions to three planetary systems around dM (HIP 74995, HIP 109388 and HIP 113020). We apply our model of UV habitable zone (UV-HZ) (Buccino et al. 2006) to these cases and show that during the quiescent UV output there would not be enough UV radiation within the LW-HZ in order to trigger biogenic processes. We also analyze the cases of two other M flare stars and show that the flares of moderate intensity could provide the necessary energy to trigger those biogenic processes, while the strong flares not necessary rule-out the possibility of life-bearing planets.Comment: 17 pages, 3 figures, accepted for publication in Icaru