Higher Institute on Territorial Systems for Innovation
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Gli spazi della condivisione sono in grado di ricostruire la città? / Can shared spaces rebuild the city?
No full textIn-Network Computation is a Dumb Idea Whose Time Has Come
No full textProgrammable data plane hardware creates new opportunities for infusing intelligence into the network. This raises a fundamental question: what kinds of computation should be delegated to the network? In this paper, we discuss the opportunities and challenges for co-designing data center distributed systems with their network layer. We believe that the time has finally come for offloading part of their computation to execute in-network. However, in-network computation tasks must be judiciously crafted to match the limitations of the network machine architecture of programmable devices. With the help of our experiments on machine learning and graph analytics workloads, we identify that aggregation functions raise opportunities to exploit the limited computation power of networking hardware to lessen network congestion and improve the overall application performance. Moreover, as a proof-of-concept, we propose D AIET , a system that performs in-network data aggregation. Experimental results with an initial prototype show a large data reduction ratio (86.9%-89.3%) and a similar decrease in the workers' computation time
Aerogel ibridi come supporti per farmaci a rilascio modificato
No full textNell'ambito delle applicazioni farmaceutiche, gli aerogel suscitano un grande interesse in quanto possiedono un'elevata area superficiale, un'alta porosità e una struttura dei pori aperta; inoltre i loro processi di sintesi permettono di avere un'ampia flessibilità sul controllo della porosità, forma e dimensioni. Tutte queste caratteristiche rendono questi materiali nanostrutturati dei candidati promettenti come dispositivi per il rilascio dei farmaci. I primi aerogel ad essere stati sintetizzati, nel 1931, sono quelli di silice e continuano a riscuotere un enorme interesse in diversi settori. Nel campo delle applicazioni biomediche sono molto apprezzati per essere biocompatibili, stabili strutturalmente ed essere provvisti di un'alta capacità di carico di principio attivo. Più recentemente, la ricerca scientifica, ha preso in considerazione anche gli aerogel di alginato di calcio in quanto presentano proprietà bio-adesive e possono essere facilmente modificati strutturalmente migliorando ulteriormente le loro caratteristiche; a questo si deve aggiungere che l'alginato, come materia prima, è altamente disponibile in natura. Negli ultimi anni si è potuto assistere ad un sempre maggior interesse sullo sviluppo di aerogel ibridi in modo tale da avere i vantaggi dei diversi materiali che li compongono. Gli aerogel ibridi silice/alginato, in particolare, sono molto promettenti come dispositivi di rilascio di farmaci, permettendo di ottenere un supporto con alte prestazioni, bio-adesivo e con la possibilità di consentire modifiche strutturali per aumentarne l'affinità con i diversi principi attivi. Attualmente gli aerogel ibridi silice/alginato non sono ancora stati investigati a fondo. Lo scopo di questa ricerca è la messa a punto di una nuova tecnica di formazione di aerogel ibridi silice/alginato, in forma di microsfere con diametro medio <500 µm, da destinare al rilascio rapido dei principi attivi scarsamente solubili e il successivo sviluppo di una tecnica di rivestimento per rendere queste microsfere idonee anche per il rilascio prolungato di principio attivo. Le microsfere ibride sono state caratterizzate in termini di distribuzione granulometrica sul gel bagnato e di area superficiale sul gel secco, inoltre è stata monitorata la loro area superficiale per unità di volume in un arco di tempo di 70 giorni per ottenere informazioni sul loro stato di conservazione. I test di rilascio in vitro, effettuati sia sulle microsfere non rivestite che su quelle rivestite, sono stati eseguiti riproducendo il pH dei fluidi gastrici nel rispetto degli standard USP (United States Pharmacopeia)
Behaviour of the intraocular pressure during manual and vented gas forced infusion in a simulated pars plana vitrectomy
No full textThe quake-proof houses by Porcheddu Company in the Messina reconstruction after the earthquake of 1908
No full textThe earthquake in 1908 razed to the grounds the town of Messina and Reggio Calabria, with a lot of buildings literally pulverized. Together with the loss of many thousands of lifes and the enormous amount of damages it came the destruction of the cultural heritage. Immediately after this quake, the Porcheddu Company of Turin (importer in North Italy of the Hennebique building system) was charged of 13 projects in Messina: among these, the economical houses for the "Unione Messinese" in the Orto Botanico district, the Lombardo quarter, the Homes for the State employees, with pillars made of a prefabricated steel cage and on site poured concrete. This paper is mainly based on unpublished material in the Porcheddu archive, hosted at DISEG in the Turin Polytechnic, focusing on the feature analysis of the quake-proof Porcheddu buildings in the Messina are
Reissner's mixed variational theorem for layer-wise beam models based on the unifed formulation
No full textThe present paper proposes the application of the Reissners Mixed Variational Theorem (RMVT) for the accurate stress anal- ysis of general multi-layered beam problems. Laminated materi- als usually differ from homogeneous materials in that they exhibit much higher transverse shear and transverse normal deforma- bilities. These characteristics, and others such as the Trans- verse Anisotropy (TA) and the Interlaminar Continuity of trans- verse stresses (IC), make Classical Laminated Theories (CLT) inappropriate for the analysis of multi-layered structures. The Carrera Unified Formulation (CUF) sets a framework in which classical-to-refined beam models can be generated by expanding the unknown variables over the cross-sectional domain by means of arbitrary functions. A LW expansion is adopted for both dis- placements and transverse stresses over the cross-section section domain. In this manner, the ZZ condition is automatically satis- fied through the use of independent kinematics for each layer in a LW sense, with no need of introducing ad-hoc ZZ functions
Advanced modelling techniques for flexible robotic systems
No full textThe purpose of this paper is to present a 3 DoF underactuated mechanism with one flexible component. It is called FLEGX (FLEXible LEG) and it would be the first step in the design of a jumping humanoid robot with flexible limbs. An early system-level design validation of the FLEGX mechanical configuration was performed using the software MSC.Nastran ® and MSC.Adams ® -Matlab/Simulink ® integrated environment
Sustainable and Collaborative Innovation for the Territory
No full textInnovation as manifold energy that must incessantly redefine itself and daily infrastructures, respect the planet and produce social effects. The focus on the potentiality of territories based on the transformation of existing infrastructural, economic, human, cognitive and cultural resources, is the aim of contemporary innovation. This essay focuses on the collaborative role that different players of a territory must have in order to launch and pursue innovation processes with the goal of environmental sustainability
Image Segmentation Applied to the Analysis of Fabric Textures
No full textIn this work, we are proposing the use of image segmentation to the analysis of the textures of fabrics, with the aim of applying this approach to a fabric fault detection based on image processing
