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Esattezza, molteplicità e integrazione nell'Information Modeling&Management - Exactitude, multiplicity and integration in Information Modelling & Management
No full textThe strategies implemented by public and private contracting authorities require a more and more demanding level of management obtained through an ordered and related catalogs of all elements of the design process. Innovative data storage systems and advanced digital tools require specific production practices that are able to integrate the activities of all the actors involved in a building process. Through an analysis of some research and professional experiences, led by the authors, the present contribution offers an overall frame for this new holistic approach, which is supported by methods and tools that strengthen the information content of the design, reduce the errors in the evaluation of time and costs and adhere more to the performance and functional requirements
Magnetic hysteresis machines for next-generation electric turbochargers
No full textThe design of electric turbochargers is a challenging task because it requires a suitable compromise between mechanical, output power and thermal characteristics. The present paper motivates the use of hysteresis motors in this high-speed application. This choice is driven by the high mechanical strength, elevated working temperature and output power density of the semi-hard magnetic materials that constitute the active part of hysteresis machines. An analysis is carried out with meaningful information extracted from the material properties, which is subsequently compared to the state-of-the-art machine technologies through the data available in literature. Since the followed approach is centered in the property analysis of semi-hard magnetic materials, the results are not related to any particular motor layout
Scale down of a dynamic generator of VOC reference gas mixtures
No full textA system for the dynamic preparation of reference gas mixtures based on the diffusion technique has been developed by the National Metrology Institute of Italy i.e. the Istituto Nazionale di Ricerca Metrologica (INRIM). The gravimetric method used for the estimation of the diffusion rate and consequent concentration, gives the system the property to be a primary standard. The system can generate mixtures with low uncertainty and high stability in the 20 nmol.mol-1 - 2.5 µmol.mol-1 concentration range with a 5% (k = 2) expanded uncertainty for mixtures of acetone in air. Based on this system, a transportable device for the generation of VOC reference gas mixtures to be used as calibration standard was designed and developed. The methodology used for the scale down included several steps. An initial characterization and modelling of the primary device was done using computational tools. Based on the response of the computational model to the different physical quantities, a set of design parameters was identified. The thresholds for this set of parameters were established and translated into a set of design criteria to consider in order to keep the metrological performance target. After the design and development of the transportable device, a metrological characterization was carried out, to verify its capabilities. The metrological characterization of the generator was done in the Dutch National Metrology Institute i.e. the Van Swinden Laboratory (VSL) trough Cavity Ring Down Spectroscopy (CRDS) analyses to evaluate the linearity, the reproducibility and the short term stability. The results for the generation of methanol mixtures with molar fractions in the 80-150 nmol.mol-1 range, were 99.6% linear, with a reproducibility after 3 days within 2,9% and a short term stability better than 1% per hour. Repeatable measurements of the generated concentration were obtained for three different molar fractions, with the use of both CRDS (VSL) and the GC/FID (INRIM). A flow of the desired dry pure carrier gas can be connected to the device. The presence of water in the system has not been taken into account and further analyses should be done before introducing it to the system. Water presence might affect the adsorption rate, and consequently the flushing time before normal operation. This transportable device is able to perform in-situ calibration of instruments and has been designed to generate gas mixtures of up to four species at a time
Control curves for a new lower limbs robotic exoskeleton obtained from the study of joints angles during an unloaded human walking
No full textStudies of motor learning and robotic neurorehabilitation often involve walking with the patient suspended by means of a Body Weight Support (BWS) and guided by a robotic orthosis. This paper describes an innovative research carried on to establish the laws of motion of an active exoskeleton, called P.I.G.R.O. (Pneumatic Interactive Gait Rehabilitation Orthosis), designed by the authors and often used in suspended walking treatments as this avoid the iper-activation of the patient's antigravity musculature in the preliminary steps of the rehabilitation treatment. These experimental tests were carried on with ten healthy subjects wearing the robotic orthosis used as a means of acquiring hip-knee and ankle behavior in this special walking condition with the volunteers' joint angles recorded by the potentiometers of the orthosis. So the ESUWS (Experimental Spontaneous Unloaded Walking Set) curves were plotted. The latter were compared with the theoretical curves of the over-ground walking (Physiological Walking Set - PWS) in order to construct proper reference curves of the healthy spontaneous suspended walking (Authors' Unloaded Walking Set - AUWS), also compared with physiological curves in over-ground walking. The results obtained are highly satisfactory and useful for future neuro-rehabilitation training for brain strokes and ictus
Strutture e dinamiche di un borgo monastico: Caramagna
No full textIl saggio propone l'interpretazione della struttura insediativa medievale di Caramagna, alla luce delle evidenze architettoniche e delle fonti documentarie inedite
Il ruolo contemporaneo delle chiese storiche, tra processi di appropriazione, patrimonializzazione e abbandono
No full textLe chiese cristiane sono oggetto di processi continui di aggiornamento e adeguamento, che cessano solo quando le comunità si spostano o scompaiono. Lo studio dei complessi ecclesiastici dismessi o sottoutilizzati richiede dunque un'analisi storica su archi cronologici ampi, con un'attenzione specifica alle dinamiche istituzionali e ai valori culturali sottesi alle dinamiche di patrimonializzazione. Il contributo - dopo aver evidenziato alcune specificità dell'agire architettonico della Chiesa e della formazione del suo patrimonio culturale (rapporti materia/azione, trasformazione/conservazione, utilizzo/memoria, costruzione/riuso) - propone quattro riflessioni di natura storiografica relative alla pluralità dei soggetti ecclesiali attivi sul territorio, al rapporto tra vita comunitaria e tutela istituzionale, alla costruzione dell'opinione pubblica e alla partecipazione delle comunità. /// Christian churches are the subject of continuous updating and adaptation processes, which only cease when communities are moving or disappearing. The study of dismantled or under-utilized ecclesiastical complexes therefore requires a historical analysis of extensive chronological arches, with specific attention to institutional dynamics and cultural values underlying the dynamics of capitalization. The contribution - after highlighting some specificities of the Church's architectural activity and the formation of its cultural heritage (matter / action, transformation / conservation, use / memory, construction / reuse) - proposes four reflections of historiographical nature relating to the plurality of Ecclesial subjects active on the territory, the relationship between community life and institutional protection, the building of public opinion and the participation of communities
Data Design for Wellness and Sustainability
No full textThe paper describes the design-centered methodology and the design guidelines that guided the research and the development phase within the collaboration between the Architecture and Design Department of the Polytechnic of Turin and the Research Lab of TIM. The research wants to investigate how to expand boundaries of the wearable devices through the work of an interdisciplinary team and following the systemic design approach, a methodology that focuses on relations. Starting from an holistic diagnosis and the analysis of trends, the team defines six personas, useful to write down essential guidelines and the two new concept. According to behaviours, habits and requirements, these concepts put human at the center of the whole process and the design gives a particular attention to the sustainability. In this perspective sustainability is defined as the creation of positive relations among people, able to generate and encourage the development of well-being conditions with results on the community as a whole
Mechonomics: design thinking for growth and resilience of sociotechnical organizations
No full textIn this paper the principal ideas of mechonomics are introduced. Mechonomics is a neologism indicating the possibility of predicting the behaviour of sociotechnical organizations in the complex and interconnected world of the 21st century by means of models borrowed from structural mechanics. In particular, the concepts of growth, resilience and robustness of the organizations are discussed. The analogy with structural and natural systems is shown to be sound and permits to interpret the effects of the size of the organization and of its internal arrangement and collapse of enterprises and institutions. Consequence-based design, as the tool able to tackle with unpredictable stimuli and external effects, is introduced as the only robust philosophy that should pervade design and management of sociotechnical organizations
Disclose geometry to educate to shape reading
No full textOur main purposes are the disclosure of certain basic topics of geometry to a broad audience with the aim of enabling people to read geometric shapes that surround us, both from a mathematical and architectural point of view. In the events that we organize, we always leave ample margin to material testing, following the learn-by-doing philosophy. In particular we use origami as a medium to convey some knowledge about shapes. We present various examples addressed to different audiences