Search results for "Ricerca"
showing 10 items of 641 documents
Dalla Dichiarazione di Bologna alla Ricerca per l’Innovazione di Horizon 2020 Quale futuro in Europa per i ricercatori in Architettura?
2015
Uno degli obiettivi prioritari di Horizon 2020 è la ricaduta dei risultati della ricerca nella società in un modo che sappia generare nuova economia, coinvolgendo istituzioni diverse, quali enti locali, associazioni, fondazioni e università. Il contributo presentato al Convegno invece esprime la viva preoccupazione che le tendenze in atto vadano verso una standardizzazione di modelli, obiettivi e risultati della ricerca, limitando fortemente alcuni settori disciplinari come ad esempio quello dell'Architettura.
Il nodo
2015
L'analisi del tessuto urbano della città di Perugia e l'individuazione,attraverso planimetrie e schemi assonometrici, di accadimenti architettonici rilevanti per importanza storico-culturale e per le relazioni intercorrenti tra essi e l'edificio in disuso dell'ex carcere sono state il punto di partenza del percorso progettuale. Si è costituita, così, una trama di percorsi urbani di cui la struttura carceraria diventa nodo all'interno della città, collegamento tra il tessuto storico e l'espansione sottostante.
La ricostruzione virtuale come strumento per l'analisi storica dell'architettura
2014
L’articolo propone una riflessione sul ruolo che la ricostruzione virtuale digitale riveste nel campo della storia dell’architettura, sulla scorta degli esiti di tre esperienze di ricerca condotte nell’ambito del Dottorato di Ricerca in “Storia dell’Architettura e Conservazione dei Beni Architettonici” (XXIV ciclo) attivo presso il Dipartimento di Architettura dell’Università degli Studi di Palermo. L’obiettivo di tali ricerche è quello di offrire un contributo alla conoscenza di fabbriche profondamente modificatesi nel tempo, incompiute o scomparse, attraverso l’integrazione delle tecniche di rilevamento e modellazione tridimensionale digitale con gli strumenti propri della ricerca storica.
Manager’s and citizen’s perspective of positive and negative risks for small probabilities
2011
So far „risk‟ has been mostly defined as the expected value of a loss, mathematically PL, being P the probability of an adverse event and L the loss incurred as a consequence of the event. The so called risk matrix is based on this definition. Also for favorable events one usually refers to the expected gain PG, being G the gain incurred as a consequence of the positive event. These “measures” are generally violated in practice. The case of insurances (on the side of losses, negative risk) and the case of lotteries (on the side of gains, positive risk) are the most obvious. In these cases a single person is available to pay a higher price than that stated by the mathematical expected valu…
Statistical issues in the development of an automotive on-board diagnostics
2008
The automotive on-board diagnostics (OBD) is a complex system whose aim is to monitor the state-of-health of another complex system, i.e. the vehicle engine. OBD aimed at the containment of polluting exhaust emissions is nowadays compulsory on every vehicle model introduced into the market. Increasingly stringent regulations and ever more demanding customers push from opposite sides towards a perfect working of OBD systems. Therefore manufacturers are globally interested in the high robustness and reliability of such critical systems. The aim of this presentation is to give an insight into the main statistical problems arisen during an extensive research project carried out in collaboration…
Focus on failure avoidance and risk reduction through Variation Mode and Effect Analysis
2009
Variation Mode and Effect Analysis (VMEA) is a quality improvement tool initially thought to help product development engineers focusing on variation. The method was inspired by the wide use of Failure Mode and Effect Analysis (FMEA) in business and industry and the increased attention on robust design. However, FMEA is based on the concept of failure while VMEA is developed on the concept of variation, i.e. it implies a step further toward the awareness of variation and its implications in terms of risk and failures. VMEA helps identifying, scrutinizing and measuring the sources of variation and the way they channel through and impact on important characteristics of the system under study.…
Statistical-based tolerance setting by eliciting the loss function reasoining
2009
An issue still open in the statistical-engineering literature concerns the tolerance allocation, i.e. the setting of admitted limits for critical characteristics or performances of interest of the system under study. A common approach to tolerance allocation is based on the idea of Loss function initially developed by Taguchi. Unfortunately, some obstacles prevent from a full exploitation of the Taguchi approach, since despite its clarity and elegance, it is poorly operational. Based on Taguchi’s proposal, researchers have been more concerned on developing different analytical models of loss function than clarifying the reasoning behind the loss function idea. So there is a missing link for…
AQM Stability in Multiple Bottleneck Networks
2004
In this paper, we highlight that multiple bottlenecks can affect the performance of active queue management controllers, which are usually configured on a single bottleneck basis, as if each controller were the only element regulating the TCP traffic along its path. To see this, we consider a network scenario where RED is configured at each router, according to previously developed control theoretic techniques. These configuration rules assure stability in a single bottleneck scenario. Yet, we show that instability may arise when two link become congested. We justify this result through a multiple bottleneck model and give guidelines for new cooperative AQM controllers.