2018

This paper investigates the usefulness of a semiactive control to reduce the overturning vulnerability of a rigid block on a rigid plane under earthquake excitation. The proposed feedback law is used to set the stiffness of restraints placed at the 2 lower corners of the block. The performance of the semiactive control is numerically validated by subjecting the block to 100 recorded accelerograms. Specific simulations are performed to study the effect of different anchorage design parameters on the utility of the control.

This paper deals with a high-sensitivity method for the assessment of damage in high-strength fibres exposed to UV radiation. A recently developed experimental testing machine, based on an optical measurement system and electro-magnetic driving force, was used to characterize fibre materials. Stiffness, damping, and non-linearity were measured on several Kevlar® fibre samples previously exposed to UV light for different lengths of time. The results show that UV radiation increases the material non-linearity by amounts which can be clearly observed even at low vibration amplitudes.

This research evaluates, at microscopic level, the failure mechanisms of pultruded glass fibre reinforced polymers (GFRP) column elements after they have been subjected to temperature stress and compressive load. A scanning electron microscope (SEM) performed the investigation, with the GFRP samples cut into small sized specimens and treated with specific coatings. The analysed samples exhibited particular features, which have been interpreted with the support of fractography.

We describe a framework that supports multiple types of constraint-based reasoning tasks on a geo...graphic
domain, by exploiting a semantic representation of the domain itself and of its constraints. Our approach is
based on an abstract graph representation of a geographical area and of its relevant properties, for performing

La struttura del paesaggio. Una sperimentazione multidisciplinare per il piano della Toscana

Metodi per la valutazione dei servizi ecosistemi del paesaggio naturale e forestale per fornire o...rientamenti per la pianificazione paesaggistica.

La pianificazione territoriale è sempre stata interessata nella rappresentazione dello spazio fin... dagli anni ’70, da quando l’ha riconosciuta come un essenziale supporto per l’inclusione degli attori sociali nell’intero processo decisionale.

This paper examines some French and Italian experimentations of green infrastructures’ (GI) const...ruction in relation to their techniques and methodologies.

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