Search results for "RAILWAY"

Two Democracies Work Better Together. French and Italian decision-making processes for the Turin-Lyon railway project.

2013

The Pan-European Corridor V railway line connects Lisbon and Kiev and touches many European countries. The paper present focuses on the Turin-Lyon section where French and Italian authorities jointly work on this huge infrastructure project while applying different approaches. While there are provisions for a public debates on such issues in France, there is no similar institutional framework in Italy. Hence, the analysis allows to compare the dynamics of the public debate in two democratic systems with different public decision-making systems and political cultures. While the French case evidences that public institutions can activate participation by providing “invited spaces” for collect…

Transportation noise and gestational diabetes mellitus: A nationwide cohort study from Denmark

2020

Background: Few studies have investigated whether road traffic noise is associated with gestational diabetes mellitus (GDM), and have yielded inconsistent findings. We aimed to investigate whether maternal exposure to residential transportation noise, before and during pregnancy, was associated with GDM in a nationwide cohort. Methods: From the Danish population (2004–2017) we identified 629,254 pregnancies using the Danish Medical Birth Register. By linkage with the National Patient Registry, we identified 15,973 pregnancies complicated by GDM. Road traffic and railway noise (Lden) at the most and least exposed façades for all residential addresses from five years before pregnancy until bi…

Le vibrazioni in campo ferroviario: analisi f.e.m. dell’interazione convoglio-sovrastruttura-terreno

2003

This paper describes the formulation and application of a finite element method model that simulates the generation and propagation of train-induced vibrations into track-ground system. The F.E.M. model accounts for the interaction between ground, railway, shape of cross-section and train speed. The aim of this research is the evaluation of the influence of each factor on vibrational phenomena.

The influence of transport offer on passenger traffic in the railway transport system in a post-socialist country : case study of Poland

2021

Abstract The study examines factors influencing the number of rail passengers in Poland. The subjects of observation were 62 cities with poviat rights. The main factors influencing demand are the number of connections and the speed of trains. Therefore, we developed an original indicator – weighted number of connections, which takes into account the number of rail connections and the speed of trains. The article can be divided into two main parts: an assessment of the diversification of transport offer and transport demand in spatial terms, and an evaluation of the relationship between the variables. Poland has a large spatial diversity in terms of public rail transport offer and passenger …

Paths and Erratic Emotions of Natural and Cultural Landscapes: Mobility, Slow Fruition and Exploration of Economic Potentiality

2017

In recent years there is greater awareness of the need to match up the large amount of historical and environmental heritage of the Italian territory with the quality and concentration of cultural heritage and tourist services and put them into a network, through a new system of mobility. Urban and territorial policies should identify strategies and projects favoring the connections and use of sites, the perception of landscapes and the subjective emotions they arouse in the community. This interdisciplinary paper aims to rediscover the values and diversity of natural and cultural landscapes in Sicily by following slow routes immersed in valuable rural and urban areas. The proposed investig…

WPŁYW PANDEMII COVID-19 NA FUNKCJONOWANIE REGIONALNEGO TRANSPORTU KOLEJOWEGO OBSZARÓW PRZYGRANICZNYCH – NA PRZYKŁADZIE WOJEWÓDZTWA DOLNOŚLĄSKIEGO (PL…

2021

Systemy zbiorowego transportu publicznego są narażone na wiele zewnętrznych czynników wpływających na ich funkcjonowanie. Jednym z nich może być zagrożenie epidemiologiczne. W 2020 r. światowa pandemia COVID-19 miała istotny wpływ na światową gospodarkę oraz przewozy pasażerskie. Wprowadzone liczne ograniczenia wpłynęły na popyt (liczbę pasażerów) oraz podaż (oferta przewozowa) na rynku transportu. Do najczęstszych obostrzeń zaliczyć można: ograniczenie liczby połączeń, zmniejszenie limitu pasażerów w pojeździe, ograniczenie siatki połączeń komunikacyjnych. W analizie autorzy przeprowadzili badanie województwa dolnośląskiego oraz kraju libereckiego w kontekście zmian w funkcjonowaniu region…

RESTRICTIONS ON REGIONAL PASSENGER TRANSPORT DURING EPIDEMIOLOGICAL THREAT (COVID-19) – AN EXAMPLE OF THE LOWER SILESIAN VOIVODSHIP IN POLAND

2020

The beginning of 2020 was associated with the appearance of the global coronavirus pandemic (COVID-19). The spread of the epidemic caused the introduction of an epidemiological emergency in Poland in early March (on March 12). This resulted in reduced public transport, including regional rail transport. In Lower Silesia, this concerned regional and fast connections. The conducted analysis concerns regional connections and is based on exploration of the spatial and the quantitative aspect of these changes. The transport offer before and after the announcing of the epidemic was analysed. The results showed that most of the transport restrictions concerned the peripheries of the voivodeship (l…

Numerical study for a new methodology of flaws detection in train axles

2013

Train loads and travel speeds have increased over time, requiring more efficient non-destructive inspection methods. Railway axles are critical elements; despite being designed to last more than 20 years several cases of premature failure have been recorded. Train axles are inspected regularly, but the limits associated to the traditional inspection technologies create a growing interest towards new solutions. Here a novel non-destructive inspection method of in-service axles based on non-contact data collection is presented. The propagation of surface waves, generated by a thermo-elastic laser source, is investigated using a finite element method based on dynamic explicit integration. Coup…

Characterization of rubberized asphalt for railway sub-ballast. Improvements in the mix-design, performance features and rational methodology of HMA_…

2018

(STR) can be incorporated into asphalt mixtures in two different methods, which are referred to as the wet-dry process. The blending of recycled rubber (CRM) with asphalt has been used for years, and several manufacturing processes have been developed in Europe as well as in the USA. The use of a bituminous sub-ballast layer has been pointed out as an exciting alternative to the granular sub-ballast design traditionally applied in most railroad tracks. Frequently, unbound granular materials are replaced by bituminous sub-ballast that provide additional benefits to the subgrade protection. Much research has been conducted on finding other alternative material to be used as a modifier in asph…

CHARACTERIZATION OF RUBBERIZED ASPHALT FOR RAILWAY SUB-BALLASTS

Tesi di dottorato sotto la supervisione del professore Gaetano di Mino del Dipartimento di Ingegneria Civile di Palermo), come borsista Marie-Curie all'interno del progetto SUPRITN 2013/2017. Il mio lavoro e la linea della ricerca riguarda i conglomerati bituminosi con granulato di gomma per lo strato di sub-ballast nelle linee ferroviarie. L’attività di ricerca comprende il mix-design dell’asfalto con aggiunta di gomma, la caratterizzazione e le prestazioni per la ferrovia in termini di comportamento meccanico e lo smorzamento delle vibrazioni. In particolare con l’avvento dell’alta velocità, diversi studi hanno evidenziato ottime caratteristiche fisico-meccaniche per ciò che riguarda il c…