88,012 research outputs found
L’uso dell’analisi dinamica non lineare (time-history) nella progettazione degli edifici alti
No full textIl lavoro si inquadra all’interno dei più moderni orientamenti della partica progettuale internazionale, che prevedono, per la corretta ed efficace progettazione dei sistemi sismo-resistenti degli edifici di grande altezza approcci non più solo basati su analisi dinamiche semplificate (del tipo lineare a spettro di risposta, oppure statica non lineare, ‘pushover’), ma consigliano l’utilizzo di analisi dinamiche non lineari, ‘time-history’, allo scopo di meglio comprendere l’effettiva risposta sismica del sistema, che a volte può non venire colta nella sua interezza perlappunto da metodi semplificati. In quest’ottica, gli Autori hanno deciso di supervisionare un lavoro di tesi presso la Facoltà di Ingegneria del Politecnico di Milano, nel quale si indagasse in via teorica e applicativa l’efficacia e, di contro, l’impegno operativo, dell’utilizzo di detti approcci, con riferimento, in particolare, ad un caso studio derivato dall’esperienza progettuale del Prof. Mola, ovvero Palazzo Lombardia, nuova sede della Regione, le cui strutture furono da lui progettate nel 2007-09
Dynamic behavior of the Palazzo Lombardia tower: comparison of numerical models and experimental results
No full texthe Palazzo Lombardia Tower, located at the heart of the city of Milan, Italy, recently was completed. At 161.30 m high, the new building is currently the tallest in Italy and one of the most prominent features of the city skyline for many years to come. Given the strategic importance and the strong impact of the new building, it was decided to perform a series of dynamic excitation tests, with special emphasis on the Tower. Thus, it was possible to estimate its basic modal features and then compare them to the numerical simulation predictions provided by the same finite-element (FE) numerical analysis used for design. This offered the chance to start an important and interesting model-updating procedure, taking advantage of both the actual material properties measured during the construction phase and dynamic measurements, the latter having added significant insight to the structural behavior. The mechanical engineering department of the Polytechnic University of Milan was in charge of the design and execution of the tests. Professor F. Mola served as the structural designer of the building and also supervised the design and interpretation of the tests, together with the staff of ECSD Engineering and CAD DataConsult, who created the analytical model of the complete structure to be used as a benchmark for the experimental results. The tests provided an experimental validation of the modeling assumptions accuracy and of the robustness and reliability of the FE model in predicting the structural behavior. Moreover, the experimental validation of the FE model of the Tower was meant as the initial part of an intended continuous monitoring activity. This paper describes the main structural features of the Palazzo Lombardia Tower and those of the experimental tests. Also, the FE model is presented and the comparison between the numerically predicted and the experimentally derived modal properties is discussed
Supervised Classifier Combination trough Generalized Additive Multi-Model
No full textJ. Kittler, F. Roli (Eds.), Lecture Notes in Computer Scienc
Communication Web 2.0: An Attempt to Understand the Gap Between Italian Law and Accounting Firms and the International EnvironmentFrom Information to Smart Society
No full textThe development of Information and Communication Technologies (ICT), and recent communication regulatory framework innovations for law and accounting firms are the main drivers for the redefinition of communication processes. Nevertheless, in Italy there is reluctance in adopting communication strategies focused on advertising, public relations and Internet tools (e.g. social media, email, blogs, and so on). Some causes should be seeking in the consolidation of deontological codes, in the size of firms that is usually small, and in the communication processes used which is purely based on word of mouth and personal relationships. The aim of this article is to understand the role of ICT as a potential strategic tool for communication in the law and accounting firms, investigating the gap between the national and international context. In order to answer to the research questions, we used a field case study (ALFA), and a qualitative survey that was conducted on 105 firms in the Northeast of Italy. Results from this research show, is the existence of a resistance to implement and use ICT tools such as strategic channel of communication for the Italian context
Supervised Classifier Combination through Generalized Additive Multi-Model
No full textJ. Kittler, F. Roli (Eds.), Lecture Notes in Computer Scienc
Restitution d'un tableau de P. F. Mola au Louvre
No full textBrejon de Lavergnée Arnauld. Restitution d'un tableau de P. F. Mola au Louvre. In: Revue de l'Art, 1986, n°74. p. 73
Multivariate Data Analysis through Classification and Regression Trees
No full textElsevier Science, North Hollan
Multivariate Data Analysis through Classification and Regression Trees
No full textElsevier Science, North Hollan
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