Search results for " SCIENZA"

Tutti i Nomi di Barcellona. Il linguaggio urbanistico: parole, immagini, dal plan Cerdà all'area metropolitana

2005

Monografia, introdotta da E. Salzano e da B. Rossi Doria. Tramite un’analisi sul “linguaggio urbanistico” si riflette sulle trasformazioni della disciplina, intesa come “scienza di sintesi”, fluida e mutevole, costituita da “migrazioni” transdisciplinari e da permeazioni tra diversi saperi e paradigmi, nel tempo. L’analisi viene compiuta su alcuni strumenti urbanistici, elaborati tra in XIX sec. e i giorni nostri. Ciò viene svolto analizzando le “parole” dei piani, come fossero l’ordito che esprime le diverse teorie, idee, tecniche dell’urbanistica e della pianificazione.

An Euler-Bernoulli beam element with lumped plasticity applied on RC framed structures

2016

Most of existing reinforced concrete structures suffer due to corrosion of steel and concrete degradation. In many cases existing structures reveal to be inadequate to absorb the expected seismic load and need to be rehabilitated according to the in force code. In the worst case some structures have not been designed to absorb horizontal actions. The rehabilitation process begins with the complete knowledge of its geometrical configuration and the evaluation of the vulnerability of the structure to seismic loads. This analysis permits to identify critical zones and to establish focused strengthening actions. A comparison between the behavior of the structure in the current and in the future…

Objects, Structures, and Logics

2022

This book offers Novel In-Depth Discussions of the Relationship Between Logic and Metaphysics Attempts to Develop a New Framework for the Concept of Mathematical Structure Emphasizes the Importance of Mathematical Practice to the Philosophy of Mathematics

Measurement

2020

The basic idea of measurement is that objects exhibit an attribute for which questions like “do objects exhibit the attribute to the same degree or for any pair of them does one exhibit it more or less than the other?” make sense. It implies ordering objects that show an equal, a greater or lesser amount of one attribute, The notion of order is captured by the concept of a binary relation that is at least a weak order. Stevens (1946, 1951) classified four types of scales through which the assignment of objects to numbers can be achieved. These two approaches converge on the Representational Theory of Measurement, according to which it is the construction of functions from a set of data to a…

Effect of Stacking Sequence and Sodium Bicarbonate Treatment on Quasi-Static and Dynamic Mechanical Properties of Flax/Jute Epoxy-Based Composites

2019

The present paper deals with the investigation of quasi-static and dynamic mechanical response of epoxy-based composites reinforced with flax and/or jute plain weave fabrics. In order to evaluate the influence of the stacking sequence, two monolithic laminates reinforced with flax or jute fibers and two hybrid flax/jute laminates were manufactured through the vacuum infusion technique. Furthermore, an eco-friendly and cost-effective surface treatment based on fiber soaking in a sodium bicarbonate solution was employed to improve the fiber-matrix adhesion. The mechanical characterization (by means of quasi-static flexural, dynamic mechanical thermal analysis and Charpy impact tests) allowed …

Aristotle’s Doctrine of Causes and the Manipulative Theory of Causality

2018

I will argue for the similarity between some aspects of Aristotle’s doctrine of causes and a particular kind of interventionist theory of causality. The interventionist account hypothesizes that there is a connection between causation and human intervention: the idea of a causal relation between two events is generated by the reflection of human beings on their own operating. This view is remindful of the Aristotelian concept of αἴτιον (cause), which is linked to the figure of the αἴτιος, the person who is responsible of an action. Aristotle conceives of the efficient cause as the active element which, in the φύσις, gives rise to movement and imposes the form, in analogy with the active ele…

Properties-morphology-processing relationships in polymer based clay nanocomposites

2009

Analisi numerica degli effetti della deformazione di membrane a scambio ionico sulla distribuzione dei fluidi in canali di Elettrodialisi

2019

L’elettrodialisi (ED) è una promettente tecnologia a membrana utilizzata in diversi campi, ad esempio nella dissalazione delle acque e nell’industria alimentare. L’ED usa un potenziale elettrico per indurre una migrazione selettiva di cationi ed anioni da una soluzione elettrolitica ad un’altra, sfruttando membrane a scambio ionico. Membrane anioniche e cationiche sono alternativamente collocate all’interno di una unità ED. A queste sono solitamente interposti spaziatori che prevengono il contatto tra le membrane e delineano i canali in cui scorrono le soluzioni. L’utilizzo di membrane profilate consente di costruire unità prive di tradizionali spaziatori a rete non conduttivi. In genere, l…

An Hypervolume based constraint handling technique for multi-objective optimization problems

2011

Formulation of structural optimization problems usually leads to the individuation of one or more objective functions to be minimized under different constraints. Many multi-objective evolutionary algorithms are approached by a Pareto-compliant ranking method, where no a priori information on the problem is needed and the concept of non-dominated solutions is used. In this paper a constraint handling technique based on the concept of hypervolume indicator is presented. Initially proposed to compare different multi-objective algorithms hypervolume indicator is the only single set quality measure to reflects the dominance of solution’s sets. The constraint handling technique proposed use an e…

Structural Design of Frames Able to Prevent Element Buckling

2012

Two formulations of a special multicriterion optimal design problem devoted to elastic perfectly plastic steel frame structures subjected to different combinations of static and dynamic loads are presented. In particular, two minimum volume design problem formulations are proposed: in the first one the structure is designed so as to be able to elastically behave for the assigned fixed loads, to elastically shakedown for serviceability seismic load conditions and to prevent the instantaneous collapse for suitably chosen combinations of fixed and ultimate seismic loadings; in the second one the structure must also satisfy further appropriate constraints related to element buckling. The action…