Search results for " Ferro"
showing 10 items of 499 documents
A PSO highway alignment optimization algorithm considering environmental constraints
2013
In recent years, there has been a growing need to develop and delineate algorithms that quickly provide optimized highway alignments. The matter is very complex since it is dominated by several factors and engineers have to achieve different and relevant targets (such as minimization of construction and earthwork costs, compliance with environmental and right-of-way constraints, maximization of safety and comfort for users, conformity with geometric standards). The possible solutions of this problem are clearly infinite and only modern artificial intelligence techniques can really simplify and speed up the highway design process. In this study a search algorithm, based on a Swarm Artificial…
Increasing the Circularity of asphalt mixtures: Integrated Sustainability and Circularity Assessment as a progress monitoring tool towards more Circu…
2021
Sustainability and Circular Economy (CE) are two concepts that lately have been profoundly linked to each other. The road engineering industry has gradually been adapting practices that are considered both circular and sustainable. However, not all of these practices entirely consider the whole life environmental and circularity assessment and implications of asphalt mixtures.; which in turn leads to doubtfully circular and sustainable approaches. For this reason in this thesis, after analysing the ways that National Road Authorities implement and communicate CE through questionnaires and web searches, a Material Circularity Index quantifying framework, based on the proposed methodology of …
A Palermo il IV Congresso Internazionale
2007
Notiziario della Società Italiana di Infrastrutture Viarie incentrato sul convegno organizzato dal Dipartimento di Ingeneria delle infrastrutture Viarie di Palermo, dedicato ai temi di ricerca specifici del settore Strade, Ferrovie e Aeroporti.
Il Ministro Di Pietro al Convegno di Palermo.
2007
Notiziario della Società Italiana di Infrastrutture Viarie. Resoconto del IV Convegno internazionale della SIIV, intitolato "Advances in Transport Infrastructures and Stakeholders expectations", svolto a Palermo dal 12 al 14 Settembre 2007.
Eventi promossi da SIIV. D'attualità, ricerca e innovazione.
2008
Notiziario della Società italiana di infrastrutture Viarie su eventi culturali e scientifici organizzati presso alcune sdi afferenti.
Prospettive dell'ingegneria stradale
2008
Notiziario della Società Italiana di Infrastrutture Viarie dedicato all'incontro scientifico-culturale con una forte connotazione internazionale intitolato: “Road Engineering Research: New Perspectives for the next generation of researchers”, svolto ad Ancona nel Luglio del 2008.
Exploiting Data Analytics and Deep Learning Systems to Support Pavement Maintenance Decisions
2021
Road networks are critical infrastructures within any region and it is imperative to maintain their conditions for safe and effective movement of goods and services. Road Management, therefore, plays a key role to ensure consistent efficient operation. However, significant resources are required to perform necessary maintenance activities to achieve and maintain high levels of service. Pavement maintenance can typically be very expensive and decisions are needed concerning planning and prioritizing interventions. Data are key towards enabling adequate maintenance planning but in many instances, there is limited available information especially in small or under-resourced urban road authorit…
A statistical approach for calibrating a microsimulation model for freeways
2014
In this paper the calibration of a traffic microsimulation model based on speed-density relationships is presented. Hypothesis test was applied in the calibration process to measure the closeness between empirical data and simulation outputs and determine whether the difference between (observed and simulated) speed-density relationships was statistically significant. Statistical regressions between the variables of traffic flow were developed by using traffic data observed at the A22 Brenner Freeway, Italy. Similar relationships were obtained for a test freeway segment in uncongested conditions of traffic flow by using the Aimsun microscopic simulator; thus on field conditions were reprodu…
A Logic Fuzzy Model for Evaluation of the Railway Station’s Practice Capacity in Safety Operating Conditions
2013
Abstract The practice capacity of a railway junction depends, in addition to the effective operation’s conditions, by the potential risk factors related to the design plan of the railway station. With the aim of an approach based on the “fuzzy sets” it is possible to determine the numeric value of the practice capacity by the logic - qualitative relations between the features of the railway junction and the potential risk factors. This methodology permits to try out the absolute value of a suitable vector β, (less then the unit) for the utilization of the theoretic capacity in conditions of maximum reliability of the system related to the aspect of safety (technique “fail safe”).
L'espace-temps du TGV Rhin-Rhône. Quatre images de l'évolution de l'accessibilité ferroviaire.
2011
National audience; L'évolution du transport ferroviaire de voyageur est marquée par la constitution, depuis les années 1980, d'un réseau de Lignes à Grande Vitesse (LGV) ; les gains de temps sont en général, la principale justification de la construction de ces lignes ferroviaires nouvelles. La LGV Rhin-Rhône, conçue dans une dimension européenne entre territoire rhénan et arc méditerranéen, sera la prochaine infrastructure de ce type inaugurée (en décembre 2011). Les différents acteurs du TGV Rhin-Rhône sont attentifs à l'effet d'image du TGV et à l'amélioration présupposée de l'accessibilité que celui-ci va permettre. Cette amélioration est généralement argumentée à l'aide d'une valeur ch…