1,008 research outputs found
"Comune Pisanum habere in fratem precipuum maiorem". Alcune note sulle relazioni fra Filippo vescovo di Volterra (1348-1358) e il Comune di Pisa
No full textIntroduzione
L'alleanza degli anni Quaranta
Prima dell'Imperatore: l'ostilità fra Filippo e i Pisani
L'Imperatore a Pisa: Filippo devoto dell'Alumna Imperii
Conclusion
Airport ground access and urban congestion: a paradox of bi-modal networks
No full textPublic transport systems with separated way, such as automated people movers or mass transit systems, play a fundamental role as far as airport ground access is concerned, due to high potential capacity and reliability of service time. It is widely recognized that those transport systems, introduced in cities already congested by car traffic, are able to attract only a little share of the urban transport demand due to the fact that they can take competitive advantage and tangible effects on urban mobility only under high congestion levels on the road network. These conditions are proper of congested urban networks, in particular when airports are located close to urban areas so as passengers can travel from/to airports using either the urban road network or the transit systems. This paper shows that, as far as regional and urban airports are concerned, when a new transit system with exclusive rights of way is introduced to enhance airport ground accessibility, a substantial modification of the road network is necessary both in terms of infrastructure and signal policies, to reduce the capacity of the streets in the parts of the town served by transit system in order to establish an efficient bimodal transport system
Empirical analysis of pedestrian delay models at urban intersections
No full textSignalized crosswalks are useful pedestrian facilities but complexities in geometry and configuration arise, especially in congested urban areas, directly affecting safety, cycle length and delay. Universal design criteria are not dealt with by manuals. Scientific literature has proven that pedestrians look for the shortest path at crosswalks, sometimes even adopting unsafe behaviour. On the other hand, drivers’ habits are scarcely bothered by pedestrian signage. The analysis of pedestrians’ cognitive path and choices is fundamental as well as the prediction of irresponsible actions. Delay is a widely adopted parameter to assess pedestrian Level of Service. In this work, a comparison among renowned models to estimate pedestrian delay at signalized crosswalk is set and double-checked with a field study in the city of Bologna – Ital
Urban Mobility and Transportation
No full textUrban areas are developing quickly, innovative technologies grant enlarged scope for mobility management. According to literature, 50% of world population and as much as 75% of EU population live in cities, where the majority of GDP is generated. CO2 is responsible of 75% GHG worldwide and transportation is worth around 20% of this share and the contribution is rising, in particular in urban areas. Besides pollution and noise, also collisions (70% of which in urban areas) and congestion - which is worth around 1% of EU GDP in terms of time lost due to delay suffered - are negative externalities. Finally, due to urban sprawl induced by car-centric cultural regimen under the justification of cheaper land costs, the need to travel has been growing notwithstanding economic downturns, resulting in an increased threat of social exclusion for those who cannot afford a car.
The attitude towards urban transportation has shifted from laissez-faire to deep concern: as far as EU is concerned, the Action plan on Urban Mobility (2009) recommended the adoption of Sustainable Urban Mobility Plans (SUMPs), the 2011 White Paper envisaged SUMPs to become mandatory for cities over 100,000 inhabitants and a base requisite to access to EU Funds. The 2013 Guidelines and the 2015 EC Urban Mobility Package have further established the SUMP policy. In 2015, UN adopted the “Agenda for sustainable development 2030” (7 out of 17 objectives deal with transportation) and a new worldwide agreement on climate has been signed in Paris. Finally, the funding foreseen by EU research project H2020 (8,2% of the total budget allocated on transportation) will further encourage the investigation of new strategies and technologies.
SUMPs emphasize long term vision, the active involvement of citizen and stakeholders (Priester et al., 2014), the setting of targets, measures and a radical reform of regulatory and funding framework to avoid start-and-stop approach (Hickman et al., 2013; Stephenson et al., 2018). Nevertheless, the commitment level is different: developing countries would rather urge to build more and modern infrastructures, leaving the environment as a secondary priority. SUMPs are expected to find solution to road congestion and policy fragmentation between documents (Baidan, 2016). According to EU CIVITAS project’s outcomes, the implementation of SUMPs can be hindered by pro-car & infrastructure building lobbyism, inefficient planning - monitoring – dissemination, lack of stakeholder involvement and support, excessive outsourcing, fluctuation of political commitment over time (Ibeas et al., 2011; Persia et al., 2016), inadequate coordination among policy tiers and plans (Stephenson et al., 2018), unsupportive or inappropriate regulation and financial structures, poor or missing data and reliance to business-as-usual scenarios. The topics facing less acceptance have been accessibility, logistic, traffic control, cycling and walking measures (Bruhova Foltynova & Jordova, 2014)
Sui vicari generali nelle diocesi toscane alla metà del Trecento: alcuni spunti a partire dai casi di Volterra, Pisa e Firenze
No full textThis essay focuses upon the figure of the general vicar of the bishops in the late 14th century through the analysis of the cases of Volterra, Pisa and Florence during the episcopates of Filippo Belforti (1348-1358), Giovanni Scarlatti (1348-1362) and Filippo dell’Antella (1357- 1363). I aim to reason about the rapid circulation, between one bishopric and another, of these highly specialized figures, whilst trying to shed light on its logics
Integration and concentration of European air transport market
No full textDuring the last years air transport stakeholder’s behaviors have witnessed deep modifications. Airlines competition has been exacerbated by economic downturns, while airport competition emerged as a result of the less governmental intervention in airport investments. The first result of this process is a mix-model adopted by EU airlines in the domestic market, which implies that network airlines have adopted few of the strategies that have guaranteed the establishment of the low fares carriers, while low cost carriers have been continuously increasing the number of major airport served. The volatility of the air transport deregulated market has been analysed in the scientific literature and these aspects can be perceived as further evidences of the increased volatility. In order to limit the negative effects of volatility in the EU market, air transport players have been sought manners to enhance stability. Airlines mergers or acquisitions, buyout of airport operator’s shares by airlines, airport-airline partnership for ad-hoc infrastructure development or buyout of airport’s shares by other airport operators are examples of this will for a greater stability of the system
A Florentine family in crisis: the Strozzi in the fifteenth century.
No full textPhDIn 1434 the Strozzi lineage had held a leading position in
Florentine society and government for at least one hundred and fifty
years, and was one of the largest and wealthiest of the city's
patrician lineages. The records of the catasto of 1427 and of the
scrutiny of 1433 are used to give a profile of the dominant social,
economic and political position of the Strozzi before the advent of
Medicean dominance. Their record of electoral success, and the
political and cultural leadership of influential and respected men
such as Palla di Nofri and Matteo di Simone, with other factors, put
the Strozzi amongst the greatest enemies of the victorious Medicean
regime of late 1434. The effects of political opposition and exile
on the lineage are examined both directly, through records of office-holding,
and indirectly through such indicators as marriage alliances
and household wealth. The two most prominent lines of the Strozzi
were exiled after 1434. Palla di Nofri's life and preoccupations in
his Paduan exile are examined, together with the lives of his sons;
none of these Strozzi ever returned to Florence, pursued as they were
by the enmity of the Medicean regime. The very different careers of
Filippo di Matteo and his brother Lorenzo are also examined: how they
succeeded in founding a lucrative bank in Naples, and in returning to
Florence to 'rebuild' (rifare) the position of the Strozzi lineage
there. The final decades of the century saw the Strozzi in an
economically more secure position, due substantially to the efforts
of Filippo. Except for a very small number of its members admitted
into the regime, most of the lineage is here shown to have remained
excluded from significant political office until after the fall of
the Medici regime in 1494
Towards Green and Smart Ro–Ro Port Terminal Operations: A Comparative Analysis of ICE, BET and e-AGT Tractors
No full textThe decarbonization and automation of port operations are emerging as key strategies to enhance the sustainability and efficiency of maritime logistics. This study proposes a simulation-based framework to assess the operational and environmental impacts of transitioning from traditional Internal Combustion Engine (ICE) tractors to Battery Electric Tractors (BET) and Automated Electric Guided Tractors (e-AGT) in Roll-on/Roll-off (Ro-Ro) port terminal operations. The proposed framework is applied to simulate a full vessel turnaround at the Ro-Ro terminal of the Port of Ravenna (Italy). A set of Key Performance Indicators (KPIs) is defined to evaluate turnaround time, vehicle productivity, energy consumption and CO2 emissions across three scenarios. The results indicate that both BET and e-AGT configurations significantly reduce emissions compared to ICE, with reduc-tions up to 40%. However, the e-AGT scenario reveals operational drawbacks, including increased unloading time and reduced fleet availability due to charging constraints and routing limitations. These findings highlight the environmental potential of automation and electrification but also emphasize the need for integrated planning of fleet size, charging infrastructure and circulation specifications. The proposed framework provides a replicable decision-support tool for port authorities and logistics operators to evaluate alternative handling technologies under realistic conditions
L’epistolario di Filippo Belforti: appunti per una nuova edizione
No full textPubblicazione di due lettere tratte dal manoscritto n. 5832d ella Biblioteca Guarnacci di Volterra, intitolato "Regestum litterarum domini Philippi Belforti episcopi Volaterrani inceptum anno 1348 et continuatum"
Multimodal, sustainable and resilient solutions for mobility and transport – SIDT 2022
No full textTransport policy is a multidisciplinary field where engineering, economics, sociology and law must come together in well-articulated and effective solutions. Despite being a field of effective intervention, most scientific publications address transport policy with a theoretical and often abstract approach, making its understanding difficult for non-senior academics and even more opaque for practitioners. While the merits of case study methods both for undergraduate and graduate teaching are recognised, academics struggle to find empirical material that provides objective and operational illustration of the theories and approaches lectured. This is a major barrier not only in the teaching context but also for practitioners.
Case Studies on Transport Policy covers this gap by providing a repository of relevant material to support teaching and transferability of experiences. Observation of field experience highlighting the details and drawbacks of implementation is invaluable to show how Transport Policy can be applied in the operational field, maintaining consistency with strategic options. Teaching with case studies introduces students to challenges they may face in the real world, and provides a very rich learning method for executive training at every institutional level. For practitioners, and specially governments, case studies are a powerful tool to show the potential benefits from policy measures and packages.
Case Studies on Transport Policy and its sister journal Transport Policy provide a valuable reference for the specialised study of transport policy offering in-depth theoretical analysis and detailed case study description and analysis, and in this way providing very complete material for decision makers planners and practitioners to undertake transferability of experiences
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