1,355,954 research outputs found
La poesia contemporanea dal 1975 a oggi. Ricostruzioni e interpretazioni del contemporaneo, in "Ticontre. Teoria Testo Traduzione", viii, 2017.
No full textIl numero monografico intende offrire un contributo, attraverso una pluralità di prospettive
critiche, alla ricostruzione della storia della poesia italiana dal 1975 a oggi
Fenomeni di esitazione e dintorni: una rassegna bibliografica
No full textin Crocco C., Savy R., Cutugno F. (a cura di) API: Archivio del Parlato Italiano, DVD-rom, Prodotto e distribuito da CIRASS-Università degli Studi di Napoli Federico “II”
Numerical solution of the blasius equation with Crocco-Wang transformation
No full textThis paper presents a direct second-order finite-difference solution of the two-point boundary value problem derived from the classical third-order Blasius problem using the Crocco-Wang transformation. Noting the end-point singularity introduced by the Crocco-Wang transformation due to a zero boundary condition, the method provides special handling of this singularity to ensure second-order accuracy. Additionally, the method uses an extrapolation procedure to obtain results of increased accuracy. We compare our computed solution with an approximate analytical solution and numerical solutions previously reported and find that our results are in excellent agreement
RESILIENCE APPROACH TO PUBLIC POLICIES: A MULTIDISCIPLINARY FRAMEWORK
No full textToday more than ever there is the necessity to deal with the meaning of a word and, at the same time, a concept, “resilience”, which has gradually become the “key-concept of an era” due to its symbolic and evocative value, in a time when its most frequent interpretation has been connected to an other word: “crisis”.
2015 has been defined “the year of resilience” by the heads of the United Nations Office for Disaster Risk Reduction (UNISDR). Twenty years after the terrible Kobe earthquake, which led in 2005 (during the UN Conference at Hyogo in Japan) to the Definition of the Framework for Action 2005-2015: Building the resilience of nations and communities to disasters, the international community wonders what lessons can be drawn from the new crises and catastrophes, and identifies the resilience as the key-concept in order to face these challenges. In fact, the resilience implies elasticity and the ability to adapt by the corpora, the passions, the entire siystems and territories. These qualities today more than ever are valuable to get out of the trap represented by a crisis, an epochal crisis which arose from the financialisation of the economy and the globalization of markets. Globalization has betrayed, in fact, our expectations of prosperity and economic stability. It has produced innumerable positive effects, but has also brought much fragility and vulnerability, aggravating the problem of the struggle for resources and survival, rather than solving it, as Keynes foresaw and hoped for his grandchildren.
Nowadays, “the grandchildren of Keynes” – or should we say his “great-grandchildren”, because since the first edition (1931) of the famous essay Economic Possibilities for Our Grandchildren have already elapsed more than eighty years – undoubtedly live in a bigger and more open world than the one in which their illustrious ancestor lived, but the only result which they have obtained is to make it much more dangerous, uncertain and unstable. It is enough to look around to realize it: the technological revolution overwhelms the economic and social systems; societies are increasingly complex and sophisticated, but also more unequal, more expulsive and more exposed to the meltdown; the economic crisis weakens the people and impoverishes countries; natural disasters, still rising, are often caused by the direct or indirect human action and produce devastating physical and economic damages; the progressive decrease in births and the aging population put a strain on the sustainability of welfare and health care systems in the rich and industrialized countries. The traditional political solutions, namely the creation of corporative and universalistic national welfare systems, have gradually become unsustainable because of the spending review. Moreover, the progressive evolution towards regional and liberal welfare systems undermines their redistributive and inclusive function, especially because of the progressive change in the composition of the population determined by migration.
The government of these processes is entrusted to a public sector in continuous evolution because of the reorganization of local government, which in the name of subsidiarity and adequacy is taking shape in some big European countries. It is necessary therefore a change, a new approach to the problems of the world, leading to a reversal or, alternatively, to a recovery of the original push, which could eventually lead to safety the “Keynes’s grandchildren”, outside the trap in which they remained imprisoned. However, to achieve this goal it is necessary that contemporary societies become aware of the ongoing changes and adapt to them quickly and consistently. The key to everything, the path to salvation, is now more than ever the resilience, and the ability to respond to the uncertainty and changes by implementing adaptive strategies and constantly creating new forms of equilibrium, other than that of departure. This is the only method which can help us to “tame the beast” and persuade it to change the trajectory, forcing it to do what we want, that is, to increase the welfare and improve the living conditions of the people inhabiting the world, especially of the poorest, without prejudice to democracy and social justice.
This paper focuses, in a socio-economic and multilevel perspective, on the applicability of a resilience approach to public policies
Analytical investigations of laminar separations using the ''Crocco-Lees mixing parameter'' method
No full textAnalytical studies of laminar separations using Crocco-Lees mixing parameter metho
La poesia contemporanea dal 1975 a oggi. Ricostruzioni e interpretazioni del contemporaneo
No full textPrefazione a un numero monografico di "Ticontre" dedicato alla ricostruzione della storia della poesia italiana dal 1975 a ogg
A Physics-Assisted Deep Learning Microwave Imaging Framework for Real-time Shape Reconstruction of Unknown Targets
No full textIn this paper an innovative approach to microwave imaging, which combines a qualitative imaging technique and deep learning, is presented. The goal is to develop a tool for reliable and user-independent retrieval of the shape of unknown targets from the knowledge of the scattered fields. Qualitative imaging methods are powerful inverse scattering tools, as they provide morphological information in real-time. However, their outcome is a continuous map which has to be hard-thresholded to clearly identify the targets. This thresholding unavoidably results in case-dependent, often user-biased, results. To deal with this issue, a deep learning approach, based on a physics-assisted deep neural network is proposed to automatically classify image pixels, i.e., to generate binary masks, separating the targets (foreground) from the background. In particular, the proposed network binarizes the output of a qualitative imaging inversion technique known as orthogonality sampling method. For the sake of comparison, a deep learning method is also exploited, which generates the binary masks directly from the scattered fields without any qualitative imaging aid. A quantitative assessment of the performances of both methods as well as a test on experimental data are provided
Asymptotic expansion of Crocco solution and Blasius constant
No full textAbstract:
We consider the Crocco equation (the reduction of the Blasius equation). The use of this more simple equation for computation of the Blasius constant leads to some unexpected difficulties, which have been unexplained. We computed the asymptotic expansion of the solution to Crocco equation at its singularity. This expansion was unknown before. We describe the structure of the Riemann surface of the Crocco solution at the singularity. These results were
used for construction of an effective numerical algorithm, which is based on analytical continuation, for computation of the Blasius constant with an arbitrary and guaranteed accuracy. We computed the Blasius constant with a 100 decimal places.Note:
Research direction:Mathematical problems and theory of numerical method
A bilinear approach to the position self-calibration of multiple sensors
No full textThis paper presents a novel algorithm for the automatic 3D localization of a set of sensors in an unknown environment. Given the measures of a set of time of arrival delays at each sensor, the approach simultaneously estimates the 3D position of the sensors and the sources that have generated the event. Such inference is obtained with no assumption about the sensor localization; the only assumption made is that the emission time of the sources must be known in order to evaluate the time of flight for each event. Moreover, we propose a further method that deals with the likely case of missing data in the measurements. This occurs when sensors are far apart or behind natural barriers that avoids the registration of the given event. Simulated experiments show the validity of the approach for different setups of sensors and number of events
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