نتایج جستجو برای: european railways

تعداد نتایج: 188751  

2003
João P. Martins Ernesto M. Morgado Rolf Haugen

This paper reports some results of a long-term work in application of AI techniques whose ultimate goal is the development of tools for resource scheduling. Most of the efforts so far have been devoted to crew scheduling in railways and the resulting tool is called CREWS. CREWS contains the basic knowledge for crew scheduling, remains constant across companies, and only needs to be extended wit...

2017
Yanina Benedetti Federico Morelli

Road and railway networks are pervasive elements of all environments, which have expanded intensively over the last century in all European countries. These transportation infrastructures have major impacts on the surrounding landscape, representing a threat to biodiversity. Roadsides and railways may function as corridors for dispersal of alien species in fragmented landscapes. However, only f...

2011

Wine was an integral part of the population’s diet in much of southern Europe. In France on the eve of the railways, there were reportedly over one and a half million growers in a population of thirty-five million. High transport costs, taxation, and poor quality all reduced market size, and most wines were consumed close to the place of production. Volatile markets also forced most growers to ...

2015
Rico Merkert David A. Hensher

With the aim to improve efficiency and value for money, in addition to tendered services the European Commission approach to rail organisation allows substantial open access rail services in both passenger and freight operations. This paper investigates, from a transaction cost perspective, whether the European approach is applicable to the Australian context, and more generally to all regions ...

2005
Jean-Louis Boulanger

In the European railways standards (CENELEC EN 50126, (1999); EN 50128, (2001); EN 50129, (2000)), it is required to obtain evidence of safety in system requirements specifications. In the railway domain, safety requirements are obviously severe. It is very important to keep requirements traceability during software development process even if the different used models are informal, semi formal...

2013
V. RADOVIĆ Z. POPOVIĆ L. LAZAREVIĆ V. VUKADINOVIĆ

Z. Popović, L. Lazarević, University of Belgrade, Faculty of Civil Engineering, Belgrade, Serbia V. Radović, University of Montenegro, Faculty of Civil Engineering in Podgorica, Montenegro V. Vukadinović, Serbian Railways, Belgrade, Serbia G. Tepić, University of Novi Sad, Faculty of Technical Sciences, Novi Sad, Serbia Rail defects due to rolling contact fatigue (RCF) threaten the traffi c saf...

Journal: :Journal of the Transportation Research Forum 2013

1998
L. Jansen M. Meyer

At the Institute of Control and Automation Engineering Design/CPN has been used to model the European Control System (ETCS) within a project for the Deutsche Bahn AG (German railways). This paper reports of experiences in modelling this complex, distributed automation system using Coloured Petri Nets and the Design/CPN tools. We will concentrate on some technical issues. However, for motivation...

2004
Zoltán Orbán

The main purpose of this paper is to give an overview on the state of the art of inspection, assessment and maintenance of masonry arch railway bridges by the presentation of the results of an ongoing international research project run by the International Union of Railways (UIC) with the participation of 14 railway administrations. The survey has shown that the European railways partaking in t...

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