Search results for " city."

Smart rules for smart cities- Managing efficient cities in euromediterrenean countries

2014

Modern cities require new and different codes, taking into account environmental and energy issues, pillars of the contemporary urban development. The existing urban communities are highly energy consuming systems, strongly contributing to greenhouse gas emissions. Contemporary cities cannot be thought of and defined as static systems, as they were in the past, with a few urban functions. ‘The Church, the square and the court, the marketplace and the government palace were in the past the places where the urban functions were taking place’ (E. Salzano ). Today, the reference frame has changed even due to the demographic increase more and more concentrated in the cities that are now large co…

A Network Tomography Approach for Traffic Monitoring in Smart Cities

2018

Traffic monitoring is a key enabler for several planning and management activities of a Smart City. However, traditional techniques are often not cost efficient, flexible, and scalable. This paper proposes an approach to traffic monitoring that does not rely on probe vehicles, nor requires vehicle localization through GPS. Conversely, it exploits just a limited number of cameras placed at road intersections to measure car end-to-end traveling times. We model the problem within the theoretical framework of network tomography, in order to infer the traveling times of all individual road segments in the road network. We specifically deal with the potential presence of noisy measurements, and t…

A Middleware to Develop and Test Vehicular Sensor Network Applications

2019

The Smart city ecosystem is composed of several networked devices that provide services to citizens and improve their quality of life. Basic services, which must be exposed by the underlying software infrastructure, require efficient networking and communication protocols to coordinate and manage all the system components. In particular, Vehicular Sensor Networks (VSNs) are envisioned as key components of smart cities. Verification is crucial in such a highly dynamic scenario to ensure operation correctness and to reduce the development cost of smart applications. However, the rigidity of existing middlewares makes development, reconfiguration, and testing rather difficult. In this work, we…

Human Mobility Simulator for Smart Applications

2019

Several issues related to Smart City development require the knowledge of accurate human mobility models, such as in the case of urban development planning or evacuation strategy definition. Nevertheless, the exploitation of real data about users' mobility results in severe threats to their privacy, since it allows to infer highly sensitive information. On the contrary, the adoption of simulation tools to handle mobility models allows to neglect privacy during the design of location-based services. In this work, we propose a simulation tool capable of generating synthetic datasets of human mobility traces; then, we exploit them to evaluate the effectiveness of algorithms which aim to detect…

Anomaly Detection for Reoccurring Concept Drift in Smart Environments

2022

Many crowdsensing applications today rely on learning algorithms applied to data streams to accurately classify information and events of interest in smart environments. Unfor-tunately, the statistical properties of the input data may change in unexpected ways. As a result, the definition of anomalous and normal data can vary over time and machine learning models may need to be re-trained incrementally. This problem is known as concept drift, and it has often been ignored by anomaly detection systems, resulting in significant performance degradation. In addition, the statistical distribution of past data often tends to repeat itself, and thus old learning models could be reused, avoiding co…

Città, diritti e pratiche di mutualismo: riflessioni a partire dalle istanze comunitarie ai tempi della pandemia

2022

During the pandemic crisis, the “community” practices of mutualism have characterized the urban space by operating in a subsidiary, if not a substitute, manner with respect to public institutions. Their actions have been political in the sense in which Hannah Arendt defined this concept. Starting from a reflection on vulnerabilities, taking a case study as the object, and dialoguing with Orsetta Giolo’s essay, The rights against the city. Urban space, subjectivity and the public sphere, published in 2021, the potential and limits of these practices will be analyzed, along with their relationship with established power, with respect to the renewed tension between rights and territoriality, w…

Iconografia del tempo in Sin City

2009

Luci e ombre sulla piazza. Cicliche trasformazioni di uno spazio pubblico

2010

Con questo articolo intendo mostrare quali possano essere le interazioni che intercorrono tra due elementi fondamentali dello spazio urbano, il suolo e l’illuminazione, nel definire il senso di un luogo. Generalmente considerate due presenze “ovvie”, quanto meno scarsamente problematiche se non a livello di mera funzionalità pratica (soprattutto nel caso della pavimentazione) in questo lavoro vengono considerate come elementi fondanti del funzionamento semiotico dello spazio urbano. Con l’esame di un caso, quello di un’importante piazza della città di Palermo, piazza Politeama, voglio dimostrare come le condizioni di illuminazione e l’organizzazione del suolo di un preciso luogo siano in gr…

Nel segno della carta

2021

Il presente contributo propone una riflessione sulla prospettiva che, all'interno dell'approccio geografico, sottolinea il valore della rappresentazione cartografica. Dopo aver sintetizzato brevemente il contesto teorico attraverso una serie di spunti ed episodi, si propone una riflessione sugli spazi urbani contemporanei, che intreccia i discorsi geografico, urbano e letterario, sulla necessità inalienabile di risolvere la complessità nel segno cartografico. This contribution proposes a reflection on the perspective which, within the geographical approach, underlines the value of cartographic representation. After briefly summarizing the theoretical context through a series of ideas and ep…

I quartieri e la città di Palermo nelle percezioni degli studenti Approcci qualitativi

2021

Il presente contributo intende riportare le evidenze di una rifles- sione, proposta con l’autorizzazione dei soggetti coinvolti, sulle percezioni e le restituzioni cartografiche – o di immagine – di studenti delle Scuole secondarie superiori di Palermo con i propri quartieri di provenienza. In particolare, sono stati coinvolti, nell’anno scolastico 2018/2019, gli studenti di una classe prima di un corso IeFP (Istruzione e Formazione Professionale) e, per l’anno scolastico 2019/2020, due classi prime e due seconde di un Istituto Tecnico per il Turismo. Nel primo caso si è chiesto di redigere un tema, o un breve elaborato, sul modo in cui il proprio quartiere di residenza venisse vissuto e pe…