1,720,980 research outputs found
La riconversione della spesa pubblica come terreno di innovazione. Soluzioni residenziali per l’emergenza abitativa a Milano
No full textMutamenti strutturali e recessione economica hanno impatti significativi sulle condizioni di vita, specie nei sistemi di welfare familisti dell’Europa del Sud comparativamente meno redistributivi e inclusivi. Tra le implicazioni più evidenti
vi è una fatica crescente a mantenere l’alloggio di abitazione, l’incremento delle morosità in relazione sia agli affitti sia ai mutui, l’aumento e l’accelerazione delle procedure di sfratto. Chi perde la casa e non trova soluzioni nelle proprie reti primarie si rivolge ai servizi sociali dei Comuni. In assenza di soluzioni adeguate, questi ricorrono tipicamente a strutture
ad alta intensità assistenziale (come Rsa e comunità) o a stanze d’albergo, soluzioni al tempo stesso costose e inappropriate. Per far fronte all’aumento dei bisogni nel quadro di risorse decrescenti, molti enti locali sperimentano – in ordine sparso – soluzioni innovative. Questo contributo analizza la recente sperimentazione di un programma di «Residenzialità sociale temporanea» promosso dal Comune di Milano, che, insieme a una riconversione e maggiore
efficacia della spesa corrente, mira a configurare soluzioni residenziali più appropriate
On-Board Prediction of Future Driving Profile for energy management of Hybrid Electric Vehicle
No full textVehicular communications could be exploited for energy
management of vehicles. We propose a system which provides that a vehicle estimates its future speed profile gathering status messages broadcasted by the surrounding vehicles and/or the infrastructure and inputting them in a traffic simulator used as a predictor. The system has been validated by simulation considering an urban scenario inspired to the Ecotekne campus at the University of Salento and a Manhattan scenario, very challenging in relation to the prediction of the speed profile. Simulation results have shown that the
prediction error is quite low for the first scenario. In the Manhattan scenario, the error is quite high in case each vehicle limits itself to send messages only to its neighbours and does not transmit the information regarding its route.
However, the error can be significantly reduced if route information is broadcasted and the infrastructure relays the messages transmitted by vehicles.
The proposed system has been tested in the Ecotekne campus
ON THE USE OF VEHICULAR COMMUNICATIONS FOR EFFICIENT ENERGY MANAGEMENT OF HYBRID ELECTRIC VEHICLES
No full textManaging decisions for smart grid using interdependency modeling
No full textCritical infrastructures are vital complex systems for our lives. Electrical grids, gas pipelines, telecommunication networks and transportation roads are examples of those critical infrastructures. Furthermore, critical infrastructures are tightly interconnected one to another, and their interdependencies are more evident during adverse events, such as faults, natural disasters or cyber attacks. Making smart decisions is a hard task for operators. This paper wants to suggest a complete procedure for helping critical infrastructure operators in managing assets during adverse events. CISIApro simulator is an agentbased simulator able to evaluate the risk associated with the consequences of adverse events. The agent ability to produce resources is summarized into the concept of operative level. The output of CISIApro, related to the power infrastructure, is used as input of the unit commitment algorithm as an example of decision making algorithm. In this paper, the unit commitment includes network topology security constraints and a risk-based objective function. This process is validated by means of a reference scenario made of four interconnected infrastructures, within a regional area. Results are presented in order to understand how unit commitment can suggest different solutions based on different risk assessment
On-Board Simulation of the Traffic Scenario for the Sustainable Mobility
No full textAbstract: Information and Communication Technologies could play a very important role in order to optimize the energy management of conventional, hybrid and electrical vehicles and, thus, to reduce their environmental impact. In particular, vehicular communications could be used to predict driving conditions with the objective to determinate future load power demand. To this, we propose a system which allows to estimate future speed profile on board of a vehicle by gathering state messages that surrounding vehicles and/or infrastructure broadcast and by inputting them to a traffic simulator (SUMO) used as a predictor. The system has been validated by a simulation model which considers a number of vehicles moving on the road network of the Ecotekne campus at the University of Salento. The actual speed profile of a target vehicle has been compared with that estimated on board for prediction horizon duration values ranging from 1 s to 60 s. Simulation results have shown that, even if the horizon duration is set to 60 s, the prediction error, in terms of the root mean square, is lower than 4 km/h. Afterwards, the system has been implemented on real vehicles and its functionalities have been tested in the campus road networ
Improved multi-criteria distribution network reconfiguration with information fusion
Full text linkElectrical grids are no more isolated infrastructures but they provide services towards other infrastructures and meanwhile water networks, telecommunications, gas pipelines and transport systems are mandatory in order to produce and deliver electricity. The reconfiguration algorithm determines the optimal tree configuration of the grid, after overloads or permanent faults. In literature, the reconfiguration algorithm takes into account feasibility, radiality, load balancing and energy losses
An algorithm for controlling packet size in IEEE 802.16e networks
Full text linkThis paper proposes an algorithm to be used in IEEE 802.16e networks for adapting MAC PDU size to wireless channel behavior when ARQ is adopted at MAC layer. The algorithm is based on an analytical approach for dynamically evaluating the optimal packet size. The latter is derived from an expression of the ARQ protocol efficiency, obtained by exploiting a finite-state Markov error model which also takes into account Adaptive Modulation/Coding. The effectiveness of the designed algorithm in improving TCP performance has been evaluated
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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