Search results for "scienza"

Identification of stiffness, dissipation and input parameters of multi degree of freedom civil systems under unmeasured base excitations

2009

A time domain dynamic identification technique based on a statistical moment approach has been formulated for civil systems under base random excitations in the linear state. This technique is based on the use of classically damped models characterized by a mass proportional damping. By applying the Itô stochastic calculus, special algebraic equations that depend on the statistical moments of the response can be obtained. These equations can be used for the dynamic identification of the mechanical parameters that define the structural model, in the case of unmeasured input as well, and the identification of the input itself. Furthermore, the above equations demonstrate the possibility of id…

The durability of basalt fibres reinforced polymer (BFRP) panels for cladding

2015

The study focuses on two basalt composite laminate panels for cladding, produced by means of vacuum bagging technique. In particular, unidirectional and random basalt fabrics, with different areal weights, using epoxy resin as matrix, were used. According to the ISO 15686 methodology for the evaluation of durability, samples were subjected to cycles of artificial aging in climatic chamber and outdoor exposure, carrying out mechanical (i.e. quasi-static and dynamic) and calorimetric tests. The results show the effectiveness over time of produced basalt composite laminates and the initial increase of the mechanical performances after the first steps of accelerated aging.

Fuzziness, Cognition and Cybernetics: an outlook on future

2015

In the present paper, we connect some old reflections about the relationships existing between the theory of fuzzy sets and cybernetics with modern, contemporary analyses of the crucial (better: unavoidable) role that fuzziness plays in the attempts at scientifically describing aspects of information sciences. The connection, which has a basic conceptual origin, has been triggered also by the recent 50th anniversary of Norbert Wiener’ death which has been instrumental in looking again at some crucial aspects of the birth of information sciences in the midst of last Century. Fuzzy sets are an essential part of this revolution and share all the innovations as well as the difficulties of this …

An elastic-damage nonlocal interface model

2005

A nonlocal elastic damage interface model is proposed

Using Taguchi method for the optimization of processing variables to prepare porous scaffolds by combined melt mixing/particulate leaching

2017

Synthetic biopolymers have made significant inroads into the development of devices for tissue regeneration. In this context, a challenge is the achievement of appropriate properties mimicking the natural extracellular matrix by fabricating scaffolds presenting mechanical properties, specific surface, porosity and pore interconnection adequate for the final application. This study involved a systematic procedure based on Taguchi method for parameters optimization of melt mixing/particulate leaching combined processes aiming to enhance the performance of the scaffolds. In particular, it was evaluated the effect of time and temperature of melt mixing of the poly(lactic acid) matrix with two w…

One Belt One Road: Understanding China’s activism in contemporary world. Does the flap of a butterfly’s wings in China set off a tornado in Europe (U…

2018

The project of economic integration of the Countries of Eurasia, so called One Belt One Road (OBOR) or “the new silk belt road” initiative, on which President Xi Jinping is focusing to realize the great "Chinese Dream" of a strong and prosperous China, until now and notwithstanding a strong and widespread mediatic impact, is no more than a declared foreign policy strategy pursued by the Chinese Government to achieve two different sets of results. The first, and most important (as well as undervalued) is to close China’s internal development gap between coastal and inland regions, through the creation of a widely interconnected national logistic and industrial infrastructure which will serve…

L'APPORTO DELLA COMPARAZIONE NEL RAPPORTO TRA SCIENZA GIURIDICA ED ELABORAZIONE GIURISPRUDENZIALE

2011

The essay is aimed at demonstrating the extent to which comparative law, and the adoption of a comparative method, can play a clarifying role in the relationship between law as a science and law in action. The starting point is that any legal system should be appreciated as a whole without giving in to the temptation of describing it only by way of giving prevalence to one of its formants (legal doctrine, judicial decisions, legislation). These are only stand-points from which to observe the entire legal phenomenon. This method is here applied. In the first part of this paper the English common law is scrutinized with reference to the values and the defects inherent in its formation through…

Coalition building in the UN Security Council

2014

Political coalitions in the international system are still understudied in International Relations theory. This article claims that the formation of and variations in coalitions in the international system are affected by changes in their bargaining power and bargaining environment related to the global leadership cycle and by long-term organisational changes of the international political system. Identifying the Security Council as the institution in which states are more likely to keep their systemic preferences at the institutional level, the article studies the presence, formation and change of coalitions in the international system by testing variations in the behaviour of the Securit…

Complex analysis for the solution of torsion problems: a comparison among three methods

2009

An Innovative Ambient Identification Method

2020

Ambient modal identification, also known as Operational Modal Analysis (OMA), aims to identify the modal properties of a structure based on vibration data collected when the structure is under its operating conditions, i.e., no initial excitation or known artificial excitation. This procedure for testing and/or monitoring historic buildings, is particularly attractive for civil engineers concerned with the safety of complex historic structures. However, since the external force is not recorded, the identification methods have to be more sophisticated and based on stochastic mechanics. In this context, this contribution will introduce an innovative ambient identification method based on appl…