260 research outputs found
Il monitoraggio dei servizi ecosistemici a supporto dei processi di governo del territorio. Un approccio basato sull'analisi delle immagini sentinel 2
No full textO olhar de Signorelli
No full textConsiderating the episode of the lapse of proper names, described by Freud and known as "Signorelli case", the author analyses the same, not from the point of view of the significant, but from the point of view of "the look object", whose epiphany happens under the form of " überdeutlich".Partindo do episódio de esquecimento de nomes próprios descrito por Freud e que ficou conhecido como o caso Signorelli, o autor faz uma análise do mesmo não sob a vertente significante, mas sob a vertente do objeto olhar, cuja epifania se dá sob a forma do " überdeutlich"
Diagnosi e monitoraggio per la valutazione e riduzione del rischio sismico del patrimonio storico in muratura dei Sassi di Matera
No full textLa conservazione, il recupero e il risanamento conservativo del patrimonio storico architettonico risultano temi di ricerca attuali e di particolare interesse, considerando la eccezionale ricchezza del patrimonio storico- architettonico in muratura presente in Basilicata e nell’area della città di Matera. Nonostante i numerosi studi condotti risultano molteplici i problemi rimasti irrisolti che riguardano il patrimonio architettonico materano e nella fattispecie gli edifici in muratura. Questi ultimi versano in condizioni di degrado e gli interventi risultano spesso non tempestivi e non efficaci con conseguente perdita di valori irriproducibili e irripetibili per la società di cui sono emanazione. Ad oggi gli interventi standard eseguiti sui patrimoni architettonici risultano spesso inadeguati, a causa di una non adeguata programmazione della diagnostica e del monitoraggio del bene su cui intervenire. Risulta necessario, pertanto, effettuare campagne di indagini tecnologicamente sviluppate sulle murature tipiche della Basilicata, al fine di definire modelli operativi per il calcolo della vita residua delle opere, utili a privati ed enti gestori. In tale ottica, la diagnostica innovativa, il monitoraggio e la definizione di modelli di calcolo semplificati di comprovata validità effettuati sugli edifici in muratura del Materano, svilupperebbe codici di pratica validi e utilizzabili per tutti gli edifici in muratura presenti sul territorio italiano
A study of local collapse mechanisms of an ancient church in Matera
No full textThe conservation and protection of the Italian architectural heritage is a current and particularly interesting theme for the scientific community. A part of this historical heritage is represented by worship places made traditionally with masonry systems that result, nowadays, still open to the public.
In this work, particular attention is paid to the churches typology found within the “Sassi” UNESCO site of Matera. They are very often built with calcarenite masonry, a local rock also frequently named “tuff”, and show a high degree of seismic vulnerability also facilitated by many factors such as, for example, the material inhomogeneity, the low connections among the structural elements in conjunction with an inadequate maintenance status. In this paper the most vulnerable local collapse mechanisms of an ancient masonry church are at first individuated and, then, analytically evaluated. Two different approaches are followed: by using the classical kinematic linear analysis, and by simulating the nonlinear response of these macro-elements by the means of nonlinear pushover analyses. Moreover, in the paper some comparisons among the obtained results are shown
Innovative Techniques for Masonry Ancient Buildings Conservation
No full textThis paper presents a review of recent innovative techniques for con- servation of ancient masonry buildings where the architectural heritage consists of constructions in stone materials. These constructions are conditioned by the architectural styles of the past that are representative of all ancient cities. There is a huge variety of stone materials that have substantially different characteris- tics depending on the type of source rocks from which they are extracted. These materials are affected by synergistic chemical, physical, and biological degrada- tion phenomena caused by the complex interaction between the materials and the exposure environment. The degradation of materials can compromise the structural behavior of the construction and increases its seismic vulnerability. The preservation of the architectural heritage built with stone requires restora- tion works able to neutralize or at least reduce the degradation of these extreme- ly vulnerable materials and this paper illustrates a multidisciplinary research ac- tivity aimed at using an innovative product based on lime and nanoparticles of graphene in restoration and conservation of ancient masonry
Learning Curve and Wind Power
No full textThis study explores the reasons why countries have chosen subsidies to green electricity instead of implementing the more common Pigouvian tax on polluting emissions. I focus on the learning by doing effects from the production of wind power on the cost of future production as a justification for the observed policies. In doing so, I present two models that differ in the way I introduce learning. Under reasonable parameter values, the price paid to a firm for the energy produced from wind power is heterogeneous, and varies among the firms that produce energy from wind power according to the index of productivity of the firm itself. The suggested strategies of this research differ from the main price-driven schemes adopted by EU members; by comparing such results with European Union policy, the paper show that EU policy is not optimal.learning by doing, environmental policy, Pigouvian taxes, subsidies.
- …
