Higher Institute on Territorial Systems for Innovation
PORTO Publications Open Repository TOrinoNot a member yet
91193 research outputs found
Sort by
Absolute frequency measurement of the 171Yb optical lattice clock at INRIM
No full textWe present the absolute frequency measurement of the transition 1S0 - 3P0 at 578 nm in ytterbium 171 realized in an optical lattice frequency standard relative to the cryogenic caesium fountain ITCsF2. The measurement result is 518 295 836 590 863.59(31) Hz with a relative standard uncertainty of 5.9 × 10-16. A contribution of 1.6 × 10-16 is coming from the ytterbium clock and we are working to reduce this contribution to the 1 × 10-17 level
Community web-based development: crowdmapping for improving cultural heritage experiences in Piedmont
No full textMapping modern human travels are the more fleeting the higher you go up in the mountains. How to collect and maintain over time the knowledge on how it was and it still is possible to explore such areas? This essay discuss processes of "crowdmapping" through new forms of geographical representations that are "resilient" to changes. It is introduced an ongoing pilot project which is developing a web platform to computing situated traces (trails and ways) of highlands by a method that must adapt and cooperate (be resilient) with the mode of experiencing those knowledge map and geo information. The aim is to maintain and preserve memories and to monitor the land and its environmental changes. GeoMa is the name of the web platform which is building a virtual community of various experts and enable them to build their collective geographic knowledge
MULTI-AXIAL FATIGUE OF SHEET METAL JOINTS UNDER CLAMP LOAD AND CYCLIC BENDING
No full textA validated Von-Mises stress-based model is presented for multi-axial fatigue evaluation of clamped sheet metal joints that are subjected to a cyclic bending stress additional to the compressive bearing stress in the bolted joint. Joint material, bolt preload level, and the amplitude level of the cyclic bending moment are studied for their effect on the fatigue life of the clamped sheet metal plate. Bolt tightening to a precise preload level is accomplished by using an ultrasonic instrument that has been mechanically pre-calibrated to convert the time delay of longitudinal ultrasonic wave reflection to a bolt elongation and corresponding preload value. Fatigue data is generated using an MTS fatigue testing system. Experimental and FEA results are fitted into a multi-axial model for predicting the fatigue behavior of the bolted joint. Discussion and data analysis are provided
Il welfare in Val Pellice. Un fattore di identità culturale - Il caso di Diaconia Valdese
No full textRAPID MAPPING FOR BUILT HERITAGE AT RISK USING LOW-COST AND COTS SENSORS. A TEST IN THE DUOMO VECCHIO OF SAN SEVERINO MARCHE
No full textIn the last years, the researchers in the field of Geomatics have focused their attention in the experimentation and validation of new methodologies and techniques, stressing especially the potential of low-cost and COTS (Commercial Off The Shelf) solutions and sensors. In particular, these tools have been used with purposes of rapid mapping in different contexts (ranging from the construction industry, environmental monitoring, mining activities, etc.). The Built Heritage, due to its intrinsic nature of endangered artefact, can largely benefit from the technological and methodological innovations in this research field. The contribute presented in this paper will highlight these main topics: the rapid mapping of the Built Heritage (in particular the one subjected to different types of risk) using low-cost and COTS solutions. Different sensors and techniques were chosen to be evaluated on a specific test site: the Duomo Vecchio of San Severino Marche (MC - Italy), that was partially affected by the earthquake swarm that hit the area of Central Italy starting from the 24th of August 2016. One of the main aims of this work is to demonstrate how low-cost and COTS sensors can contribute to the documentation of the Built Heritage for its safeguard, for damage assessment in case of disastrous events and operations of restoration and preservation
Production of pi(0) and eta mesons up to high transverse momentum in pp collisions at 2.76 TeV
No full textThe invariant differential cross sections for inclusive π0 and η mesons at midrapidity were measured in pp collisions at s√=2.76 TeV for transverse momenta 0.4<pT<40 GeV/c and 0.6<pT<20 GeV/c, respectively, using the ALICE detector. This large range in pT was achieved by combining various analysis techniques and different triggers involving the electromagnetic calorimeter (EMCal). In particular, a new single-cluster, shower-shape based method was developed for the identification of high- pT neutral pions, which exploits that the showers originating from their decay photons overlap in the EMCal. Above 4 GeV/ c , the measured cross sections are found to exhibit a similar power-law behavior with an exponent of about 6.3. Next-to-leading-order perturbative QCD calculations differ from the measured cross sections by about 30% for the π0 , and between 30-50% for the η meson, while generator-level simulations with PYTHIA 8.2 describe the data to better than 10-30%, except at pT<1 GeV/ c . The new data can therefore be used to further improve the theoretical description of π0 and η meson production
Roberto Gabetti e i libri. Note dal Fondo Gabetti della Biblioteca Centrale di Architettura
No full textNumerical methods in finance and economics: A MATLAB-based introduction (Chinese edition)
No full textThis is the Chinese edition of the original book published by Wiley in 2006. The book deals with numerical methods relevant for financial applications, such as portfolio optimization and derivative pricing. After introductory chapters on financial markets and instruments, also covering models based on stochastic differential equations and risk measurement issues, and on numerical methods, we move on to describe the most important tools, such as: 1) numerical integration by Monte Carlo sampling and low-discrepancy sequences (with due emphasis on variance reduction strategies); 2) finite difference methods for partial differential equations; 3) optimization methods. These methods are illustrated, along with MATLAB code, in later chapters describing several applications to option pricing and portfolio optimization. We deal in particular with binomial/trinomial lattices, exotic option pricing by Monte Carlo simulation, finite difference methods for option pricing, portfolio optimization by mixed-integer and stochastic linear programming, and numerical dynamic programming, which is also the foundation of recent methods to price high-dimensional, American-style options