Science and Technology

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A methodology for correlating the quality of the pantograph-catenary contact with the harmonic content of the current collected. A case of multiple current collection
2010
Num. 3
  It is a well known fact that when the catenary supply system is mechanically disturbed, electric arcs may develop on contact between the catenary and the pantograph. The variation in supply voltage... read all
Operations research models for programming support of cadenced timetables
2010
Num. 1
  In this article we propose to briefly describe an approach for the problem modelling, based on Operations Research and Mathematical Programming. This analysis is oriented to the planning of the... read all
Techniques and methodologies for carrying capacity evaluation: comparative analysis and integration perspectives
2009
Num. 12
  The article provides with an analysis of methods and techniques for the qualification of the railway capacity, classified by reference to factors having a direct relationship with the obtained... read all
Railway bridges seismic design and assessment of base isolation hypothesis
2009
Num. 11
  This document assesses the effects connected with the adoption of seismic base isolators in railway viaducts with reference to the “Cintura” viaduct (located in the outskirt of Bologna High Speed/... read all
An integrated methodology for 2x25 kV, 50 Hz traction system calculation Evaluation of the regenerative braking effects in a HS/HC railway line
2009
Num. 11
  The paper describes an integrated calculation methodology which, by simulating railway traffic, allows analysis of the performance of 2x25 kV 50 Hz electric traction systems. This methodology... read all
Research activity for the introduction of the “Long Locomotive” braking arrangement
2009
Num. 10
  The workgroup n°6 (Freight trains composition) of the ITALCERTIFER committee, has worked on a series of activities concerning the optimization of freight train compositions. In this paper are... read all
Check and forecasting of railway traffic regularity by a PETRI Nets based simulation model
2009
Num. 9
  The article describes the main features of a railway operation simulation model. The model simulates the operation of the elementary devices composing the railway traffic management systems by... read all
High Speed/High Capacity Milan-Bologna Railway Line Dynamic analyses of bridge and viaduct interoperability
2009
Num. 6
  This document presents a study on the dynamic effects on bridges and viaducts of the Milano- Bologna High Speed/High Capacity railway line in order to verify the requirements established by the... read all
Calculation of induced noise from electrified traction lines in telephone pairs
2009
Num. 5
  This paper describes a method for the calculation of the induced noise in a telephone pair, in the audio frequency band (300Hz-5000Hz), due to the influence of the electromagnetic fields produced... read all
Tilting trains / Conventional trains Comparison of the lateral forces acting on the track
2009
Num. 4
  The semi-static effects of tilting trains running on the track superstructure are investigated by means of linear mathematical models.These effects are due to the increase of the running speeds in... read all

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