La liberta´religiosa e la liberta´della scuola

Tbis article tries to demonstrate that freedom of education is an essential part of religious freedom, in agreement witb the conception and exposition found in the Council Declaration on Religious Liberty, whicb refers to it. This is done in successive phases: by placing freedom of education, explicidy referred to in Point 5 of the Council Declaration on Religious Liberty, within the global context of the Declaration¡ by showing the links tbat exist between freedom of education and religious liberty on a purely natural plane¡ finally, by demonstrating the necessary connections that exist between freedom of education and religious freedom on an actual supernatural plane

Is there anything new to say about SIFT matching?

SIFT is a classical hand-crafted, histogram-based descriptor that has deeply influenced research on image matching for more than a decade. In this paper, a critical review of the aspects that affect SIFT matching performance is carried out, and novel descriptor design strategies are introduced and individually evaluated. These encompass quantization, binarization and hierarchical cascade filtering as means to reduce data storage and increase matching efficiency, with no significant loss of accuracy. An original contextual matching strategy based on a symmetrical variant of the usual nearest-neighbor ratio is discussed as well, that can increase the discriminative power of any descriptor. The paper then undertakes a comprehensive experimental evaluation of state-of-the-art hand-crafted and data-driven descriptors, also including the most recent deep descriptors. Comparisons are carried out according to several performance parameters, among which accuracy and space-time efficiency. Results are provided for both planar and non-planar scenes, the latter being evaluated with a new benchmark based on the concept of approximated patch overlap. Experimental evidence shows that, despite their age, SIFT and other hand-crafted descriptors, once enhanced through the proposed strategies, are ready to meet the future image matching challenges. We also believe that the lessons learned from this work will inspire the design of better hand-crafted and data-driven descriptors

New Elders, Old Divides: ICTs, Inequalities and Well-Being amongst Young Elderly Italians

Italia parece tener un retraso de unos diez años en comparación con otros países más digitalizados, tanto en el uso de las TIC por las personas mayores como en el estudio de la relación entre las TIC y los mayores de 65 años. Por ello, se hace urgente examinar los factores que influyen en la adopción de las tecnologías por los mayores y la capacidad real de estas para proporcionar recursos culturales e interactivos, útiles para mejorar el envejecimiento activo y mejorar su calidad de vida en salud y vida social. Este trabajo describe los principales resultados de un estudio que involucró a 900 italianos de 65 a 74 años, en el marco de un proyecto nacional de investigación sobre el envejecimiento activo. El estudio indaga en las características sociodemográficas de los mayores italianos usuarios de Internet y en los factores que influyen en el uso de las TIC. Los resultados evidencian que existe una fuerte brecha digital entre los mayores, influenciada por el contexto económico y cultural. En cuanto al envejecimiento activo, se demuestra que los mayores altamente digitales presentan una mejor vida saludable en su envejecimiento, sin poderse concluir que el uso de las TIC garantice la inclusión y participaciónWhen compared to more digitized western countries, Italy seems to have suffered a delay of ten years, in both the use of ICTs by the elderly and the study of the relation between elderly people, ICTs and ageing. Considering this time lapse, it is now urgent that we question the factors that influence the adoption of ICTs by the elderly and whether ICTs can provide cultural and relational resources that could improve the quality of life of elderly in terms of health and social life. This article describes the main findings of a survey carried out as part of a larger national research project focused on active ageing, which involved 900 Italian people aged between 65 and 74 years of age. The research investigates socio-demographic characteristics of young elderly Italian Internet users and factors related to their use of ICTs. Results have shown that there is a strong digital divide between young elderly Italians, which is primarly influenced –in terms of classical dynamics– by differences in economic, social and cultural capital. With regard to the theme of active ageing, if it is true that highly digitalized young elders are generally characterized by good health, at the present stage of this research it is not possible to indicate whether the adoption of ICTs guarantees social inclusion and participatio