Search results for " Tecnologia"
showing 10 items of 1359 documents
A reckoning with the maintenance of the built environment, a Sisyphean task
2023
Maintenance concerns most of the artifacts, referring simultaneously to the socio-cultural, technical and managerial spheres. Contemporary scenarios impose an overall rethinking, where key-topics such as tradition, consumerism, sustainability and digitization become pivotal in the search for suitable production models, between post-industrial and neo-craftsmanship, in order to have fresher references for the maintenance activities.
 In the construction field, maintenance is not limited to the objective of prolonging the duration of quality levels that only affect direct users, but also has important implications of a social and collective nature, in the case of both public and private …
TI: Cyclophosphazenes as polymer modifiers
2003
The utilization of cyclophosphazenes as polymer modifiers is reviewed, with particular concern to their exploitation as versatile chain extenders, possibly for recycle problems, crosslinkers, to enhance mechanical properties of polymeric materials, branchers, to selectively introduce ramifications in linear polymers, and compatibilizers, to favor the formation of blends between originally incompatible organic macromolecules. The great versatility of the synthetic methods put forward for these substrates, together with the ease of controlling their modification, functionalization and reactivity are important parameters for the evaluation of which type of use is more feasible for these trimer…
Comparative Investigation on the Soil Burial Degradation Behaviour of Polymer Films for Agriculture before and after Photo-Oxidation
2020
Polymer films based on biodegradable polymers, polyethylene (PE) and modified PE with oxo-degradable additive were prepared by film blowing. Carbon black (1%) was added to all the films. Commercial biodegradable Ecovio®
Compatibilization of blends of polyethylene with a semirigid liquid crystalline polymer by PE-g-LCP copolymers
1997
The blends of thermoplastics with liquid crystalline polymers show, in general, poor properties because of the lack of adherence between the two phases. The use of ad hoc synthesized copolymers containing the monomer units of the two polymers has been recently considered by some of us for blend compatibilization, and the results appear promising. In this work, new PE-g-LCP copolymers, prepared either by the synthesis of the LCP in the presence of a functionalized PE, or by reactive blending of the latter polymer with preformed LCP, have been employed as compatibilizing additives for blends of PE with a semirigid LCP. The morphology and the rheological and mechanical properties of the ternar…
A limited feedback scheme based on spatially correlated channels for coordinated multipoint systems
2012
High spectral efficiency can be achieved in the downlink of multi-antenna coordinated multi-point systems provided that the multiuser interference is appropriately managed at the transmitter side. For this sake, downlink channel information needs to be sent back by the users, thus reducing the rate available at the uplink channel. The amount and type of feedback information required has been extensively studied and many limited feedback schemes have been proposed lately. A common pattern to all of them is that achieving low rates of feedback information is possible at the cost of increasing complexity at the user side and, sometimes, assuming that some statistics of the channel are known. I…
INTRODUZIONE
2011
La conoscenza è fattore determinante nel raggiungimento di fini pratici e atto imprescindibile per l’evoluzione umana e per i processi innovativi che si innescano a causa della nostra innata capacità di “non essere mai sazi” di sapere. Il poeta Orazio, nelle sue Epistole (1, 2), esortava l’amico Massimo Lollio a «sápere aude!» («abbi il coraggio di sapere, di conoscere!»), offrendogli una serie di consigli, tutti improntati alla filosofia dell’aurea mediocritas1; tra questi è anche l’invito a “risolversi a essere saggio”, dedicandosi agli studi e alle occupazioni oneste (espressione diventata ulteriormente famosa grazie al filosofo tedesco Immanuel Kant, che ne fece il motto dell’Illuminism…
Ibridi in città: corpi, spazi, tecnologie
2009
Intervento di restauro conservativo di un dipinto murale staccato, raffigurante la "Presentazione della Vergine al tempio", attribuito alla scuola de…
2014
LUCE NEL MUSÉE NATIONAL DU MOYEN ÂGE ET DES THERMES DE CLUNY A PARIGI
2009
Il Museo di Cluny rappresenta il primo museo sulla base di un'idea di come "musealizzare contestualizzando". L'allestimento di questo "hotel particulier" è un buon esempio di integrazione tra gli aspetti tecnologici e valori culturali, in cui la sensibilità per i problemi di una illuminazione razionale, sia per applicazioni indoor che outdoor, è chiaramente definita. La luce diventa qui un indicatore di significati, un'opportunità di conoscenza e di miglioramento della conoscenza critica dei luoghi. The Musée de Cluny represents the first museum based on an idea of “museum making with context consideration”. The exhibition of this "hotel particulier" is a good example of integration between …
Participación ciudadana en los perfiles de Facebook de los partidos españoles. Análisis de comentarios en la campaña electoral de 2015
2017
El uso de redes sociales por parte de los partidos políticos para la difusión de sus mensajes posibilita la participación ciudadana y la creación de debate entre los usuarios. El presente estudio analiza esta participación a través de los comentarios que escriben los ciudadanos en las páginas de Facebook de los principales partidos políticos españoles durante la campaña de las elecciones generales de 2015. El objetivo es establecer las características de la participación ciudadana en un contexto político y comprobar si existen diferencias entre los comentarios publicados en los distintos partidos. El estudio utiliza una metodología cuantitativa articulada en dos fases. En primer lugar, se a…