Search results for " space"
showing 10 items of 4562 documents
Quantum aspects originated by Gravitation: from cosmology to astrophysics
2018
El estudio de campos cuánticos que se propagan en espacio-tiempos clásicos, curvos y dinámicos, ofrece una primera manera de evaluar las consecuencias de la teoría cuántica cuando los fenómenos gravitatorios no son despreciables. Esta es una cuestión importante que debe ser abordada cuando un campo gravitatorio intenso juega un papel principal en la dinámica de un sistema físico, tal como ocurre durante el universo temprano (inflación cósmica) o en la formación de agujeros negros astrofísicos. Una de las características más sorprendentes de esta materia es quizás el hecho de que el cálculo de observables físicos, incluso para campos sin interacción, frecuentemente involucra operadores cuadr…
Políticas de aparición/desaparición (The Politics of Appearance/Disappearance)
2019
Los asuntos concernientes a las políticas de la des/aparición son amplios, variados y complejos. Atendiendo a los procesos históricos y a las categorizaciones de la (des)aparición que de ellos se derivan, en este trabajo identificamos dos entradas analíticas que consideramos principales. En primer lugar, abordamos el significado de la aparición y la desaparición desde la perspectiva de la teoría política liberal. En concreto, analizamos cómo regímenes políticos distintos se relacionan con el individuo-ciudadano y el espacio púbico. En segundo lugar, respondiendo a una asentada tradición te&oacu…
Lo spazio pubblico adattivo: esplorare la transizione digitale per il benessere sociale e ambientale
2022
The present social and environmental challenges, the impact of climate change and the pandemic, revealed the urgency and the opportunity to rethink urban design through its renewed spaces and temporalities. The pandemic offered a ‘natural experiment’ to explore and develop new perspectives, making public spaces more resilient. Contributing towards a rethink of these spaces, the present paper explores adaptive architecture with responsive technologies and their capability of shaping public spaces to constitute a conversation piece with the surrounding environment. This approach combines and reflects different disciplinary fields: architecture, civic interaction and urban design. The explorat…
Operators in Rigged Hilbert Spaces, Gel’fand Bases and Generalized Eigenvalues
2022
Given a self-adjoint operator A in a Hilbert space H, we analyze its spectral behavior when it is expressed in terms of generalized eigenvectors. Using the formalism of Gel’fand distribution bases, we explore the conditions for the generalized eigenspaces to be one-dimensional, i.e., for A to have a simple spectrum.
Modes of Religiosity in Iberian Iron Age Caves: Religious Behaviour and Sensorial Experience
2021
The Iberian Iron Age caves are defined as a specific model of sacred space. First, from a territorial perspective, they are identified as liminal spaces where the collective participation, integration and the sense of belonging is reinforced. And secondly, as multisensory contexts, where different ritual practices, highly symbolised, are performed. These spheres, cut off from the well-known and daily scenarios boost the sensory hypersensitivity, strengthened by the connection between the senses and the natural scenario. This paper is guided by the theory of religiosity modes, developed by H. Whitehouse, with the purpose of a better understanding of the ritual practices that were carried out…
Sabratha. La catacomba e le aree funerarie cristiane
2016
This paper starts from the processing of the data, both edited and acquired in 2010 by a series of dedicated surveys in Sabratha made by researchers at the University of Palermo, in collaboration whit the cnr itabc for the prin 2008 Project, carried out under the responsibility of Prof. Rosa Maria Carra Bonacasa. The researchers have made a preliminary study for an archaeological gis of Sabratha to gather informations on the monuments already studied, or under study, and to promote analysis regarding the riuse of space in the Regiones iii-v of Sabratha, after the destruction attribuited to the earthquake on 21th July 365. We present the results of the study on the Early Christian funerary a…
Is it possible to understand a book missing a quarter of the letters? Unveiling the belowground species richness of grasslands
2022
Abstract Knowledge of species richness patterns in plant communities is biased toward its hidden belowground part and is derived only from the part visible aboveground. Studies on the relationship of the above- to belowground parts of plant communities suffer from the lack of a consistent and uniform approach to assess their taxonomic composition, particularly in species-rich ecosystems. This study described the proportion between above- and belowground parts of vegetation in three grassland types along with the environmental factors that affect them, using eDNA metabarcoding and an observer survey. The internal transcribed spacer 2 (ITS2) region was used to analyze the total plant richness…
Ces molécules qui éveillent nos papilles
2017
The sense of taste is a chemical sense and one of the most ancestral sensory modalities. It allows detectingand appreciating taste molecules present in our food. Beyond our vital needs, the pleasure elicited from whatwe eat can drive our feeding behaviors sometimes up to excess. Food intake involves several sensorysystems, mainly smell and taste. The underlying molecular mechanisms are relatively complex. This articlefocuses on the extent of the chemical space associated with the five primary tastes (sour, salty, sweet, bitterand umami), and details the fundamental role of gustatory receptors in the perception of taste as well aswithin interindividual variabilities.
La consolidación de un proyecto iberoamericano de educación. La experiencia del Geoforo. Balance anual de 2011
2011
Los problemas sociales y ambientales que existen en este siglo XXI son de una gran magnitud. Pero la escuela sigue anclada en concepciones del siglo XIX, al mismo tiempo que se priorizan aspectos técnicos de la comunicación y se abandonan los valores y criterios de un análisis social. En este trabajo damos cuenta de las iniciativas llevadas a cabo por un grupo de profesores a través del Geoforo, que aprovecha las facilidades del ciberespacio, a partir del portal Geocrítica de la Universidad de Barcelona, para difundir sus inquietudes y generar la participación de educadores y estudiantes Su objetivo es estudiar los problemas comunes que existen entre los docentes para acercar la educación e…
Diversidades geográficas e construção de um conhecimento crítico para participar em rede. A experiência do Geoforo Iberoamericano. Balanço inicial
2011
The diversity of people, cultures and social situations in Latin America countries does not obstruct the critical and honest dialogue concerning the research carried out on the learning of world problems. Geography, as a science, can contribute to this challenge, but it needs, then, to leave the intellectual, corporate and academic obstacles that prevent its study by the pupils. In this work we communicate the initiatives developed by a group of teachers by means of the Geoforo, which takes advantage of the facilities of the cyberspace, from the Geocrítica portal of the University of Barcelona.