1,721,020 research outputs found
Modelli per la generazione e previsione della domanda di trasporto aereo
No full textIn questo capitolo sono esaminati i diversi aspetti inerenti la stima e previ-sione della domanda di trasporto, seguendo quanto proposto in letteratura. In particolare, si descriveranno dapprima i diversi approcci per la stima della domanda di trasporto aereo, considerando una possibile classificazione alla luce dei più recenti avanzamenti nel settore, quindi saranno esaminate le va-riabili più utilizzate in letteratura per rappresentare la relazione causa-effetto tra la variazione di domanda e la variazione delle variabili rilevanti
International Journal of Sustainable Development and Planning - Special Issue
No full textWhat is the role of regional airports in the current air transport framework? The answer is not simple and requires looking at the extraordinary growth of air transport all over the world during the past few decades. Air transport is faster than other transport modes, capable of transporting passengers and goods to the most remote countries. It can also be an engine to promote the economic development of a region. Airline deregulation started first in the USA, followed by the EU and afterwards in other countries, has further facilitated the growth of air traffic. Air transport has become accessible to more people thanks to increased frequencies and lower fares partly resulting from competition among airlines. The next step, ie airport deregulation, is expected to produce still more benefits to all the main stakeholders, ie airlines, passengers and airports themselves. This special issue collects papers dealing with regional airport topics such as environmental impacts and their evaluation, airport economics and location, airport network configuration, traveler air choices and regulatory tendencies, but also social and cultural aspects not always discussed in the literature
A comparative analysis of different specifications of modal choice models in an urban areas
No full textThis paper reports a comparative analysis of different models proposed in the literature for the simulation of modal choice in an urban area. Three popular models: Multinomial Logit, Multinomial Probit and Box-Cox Logit are specified, calibrated and validated, with reference to a real town. A new model is also tested, the Multinomial Probit Logit model. The results obtained with different specifications are reported. The characteristics of the models are compared and examined
Introduzione alla pianificazione del sistema di trasporto aereo
No full textLe politiche di sviluppo delle reti aeroportuali nazionali si inseriscono nel più generale quadro degli indirizzi e dei regolamenti che disciplinano il settore dell'aviazione ai diversi livelli territoriali sopranazionali. In particolare, il Libro Bianco dei Trasporti redatto dalla Commissione Europea ha indicato un insieme di linee di azioni di interesse per il settore aeronautico europeo, avviando una serie di riflessioni sulla necessità di sviluppare le reti di trasporto in modo compatibile con l'ambiente e sostenibile per la collettività. Gli aspetti relativi alla capacità dei nodi e degli spazi aerei, il sistema di oneri aeroportuali, l'allocazione degli slot, la competizione tra compagnie aeree e aeroporti, l'integrazione con le modalità di trasporto terrestre (prima fra tutte l'Alta Velocità ferroviaria), nonché il ruolo complesso del nodo aeroportuale in quanto terminale intermodale, sono gli elementi principali sui cui è focalizzata l'attenzione dei diversi soggetti interessati. Con riferimento alle tematiche accennate, questo volume affronta il problema della pianificazione del sistema di trasporto aereo utilizzando l'approccio quantitativo dell'ingegneria dei sistemi di trasporto, ed è rivolto agli studenti dei corsi di Ingegneria, ai tecnici operanti nel settore e a tutti gli interessati allo sviluppo del trasporto aereo
Stima della domanda di trasporto aereo e della tariffa osservata: un approccio metodologico
No full textApproccio aggregato per lo studio degli incidenti in una rete di trasporto: specificazione e calibrazione di un modello di previsione
No full textForecasting demand level at developing regional airports
No full textThe quantitative evaluation of different structures of the air transport system, particularly with reference to regional poles, is of great interest in order to choose if to re-valorise existing, regional airports in a wider network system or to build new airports. To this aim, a general methodology has been set up, within the research program “Guidelines for planning the development of Italian regional airports”, that includes the relationships between airport catchment areas and traffic zones as well as the assessment of the limits to the airport growth particularly in terms of airside capacity.
In the general procedure, the demand estimation is one of the most important elements. Following the proposed approach, in this work time series models have been used to study the potential of Reggio Calabria regional airport (located in the South of Italy); both univariate and multivariate air transport demand ARIMA models are proposed to estimate the demand levels in order to capture both the trend of demand and the effects induced by the different policies adopted at the airport. Particularly, three scenarios have been tested following the current development plan of the airport authorities of Reggio Calabria, in order to verify the limits to the airport growth. The comparison between univariate and multivariate calibrated models shows that both provide satisfactory results
City Competitiveness and Airport: Information Science Perspective
No full textTransport systems allow people to take part in social and working activities, which are variously spread
in space and time. Cities where transport systems are widely developed benefit from a high-quality accessibility,
which makes them more attractive both to users and investors. As a consequence, they can gain
in competitiveness and economic growth. Particularly, an airport can play an important role in assuring
the development of the city best linked to it, as it enlarges its external accessibility and attractiveness.
As information science applications can be used to obtain more reliable, efficient and safer systems,
with reference to these latter aspects this chapter describes the importance of improvements concerning
surface transport systems linking cities to their nearest airports as well as improvements assuring safer
operations and capacity enhancement at the city airport airside
Environmental effects of airport nodes: a methodological approach
No full textAirports are a local source of environmental impacts that should be estimated and evaluated in order to promote a right development of these transport nodes. The aim of this paper is to present a methodological approach able to identify the environmental impacts produced by an airport node, particularly atmospheric pollution produced not only by aircraft but also by land vehicles for handling operations and airport connection, given the airport multifunction role as well as its interchange multimodal function. The identified methodology is formed by several steps; the most relevant ones are addressed to the estimation of the air transport demand (linked to the number of aircraft movements) and the car mode share to go in/out the airport. The proposed methodology is useful in order to establish standard procedures able to identify the airport environmental impact footprint for a sustainable development of the air transport within the larger transport system
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