Seaport strategies for pre-emptive defence of market share under changing hinterland transport system performance

2013 ◽  
Vol 5 (4/5) ◽  
pp. 432 ◽  
Author(s):  
Arne Jensen ◽  
Rickard Bergqvist
Author(s):  
Wei Wang ◽  
Jun Liu ◽  
Li Haiying ◽  
Xi Jiang

Vulnerability in the Railway system is, studied not only from the perspective of network topology characteristic but also as the problem of the level of service relative to structure, nature damage and traffic attribute. Also, emphasis is put on the function of the system rather than the physical network itself, although some of non-serviceability in the railway network is indeed caused by physical failures. The Vulnerability of railway network is thus a decisive factor not only in terms of connectivity, and serviceability, but also in terms of the transport system performance under dynamic process-traffic which should be acknowledged as an integral element within vulnerability assessment. The paper aims at investigating the most typical factors that affect the vulnerability. The vulnerability analysis must consider each factor separately, and, at the same time, as a whole. A method to measure the vulnerability is proposed. Furthermore, this assessment method is used to analyze the Chinese Railway Network (CRN).


2018 ◽  
Vol 235 ◽  
pp. 00020 ◽  
Author(s):  
Zdenka Záhumenská ◽  
Martin Vojtek ◽  
Jozef Gašparík

Market liberalization is a great contemporary trend in many fields of economy. Liberalized transport market, where the transport demand is meeting with transport offer, is evolving dynamically. Private railway passenger operators want to increase their market share together with national railway passenger transport companies therefore the quality of passenger transportation is getting higher, which positively influences the attractiveness of railway passenger transport. The article is focused on these current trends of liberalization in railway passenger transport market. From operational and economical point of view, there are described some ways, how to make the railway passenger transport system more effective and make the entire transport system more attractive for traveling public.


2020 ◽  
Vol 12 (19) ◽  
pp. 8051
Author(s):  
Janka Saderova ◽  
Andrea Rosova ◽  
Peter Kacmary ◽  
Marian Sofranko ◽  
Peter Bindzar ◽  
...  

This article is devoted to modelling of the extracted raw material removal from a mining area to the entry point for the next technological process. Two approaches were chosen for the process modelling. The first approach is regarded to traffic modelling by using available mathematical equations, based on capacity conversion and calculation of loading equipment efficiency. The second approach of modelling is computer simulation within the simulation system ExtendSim8. The modelling of the transport system and the determination of its efficiency were performed at the same conditions. The examined transport system was consisted of two lorries and one loader. The article presents the results of calculations and the results of simulation experiments, which also verified the results obtained by calculations. Calculations of the transport system performance and simulation experiments were performed for two time periods, for a time of 1 h and 6 h during a shift from three different loading places, which were 500, 1100 and 1450 m away from a place of unloading. The results obtained by both approaches are comparable. The main contribution, novelty, of this article is the modelling of the process in a quarry operation (loading and removal of mineral resources) not only on the basis of available mathematical formulas but also the application of simulation in the simulation tool EXTENDSim8, performing simulation experiments for specified conditions and their comparison with calculated values. Simulation is a suitable tool for determining and subsequently planning of the performance of both existing and projected transport systems.


1991 ◽  
Author(s):  
Robert E. Gamble ◽  
Hwang Choe ◽  
Regina S. Narkiewicz ◽  
John M. Collett ◽  
Upendra N. Sinha ◽  
...  

Author(s):  
Gonçalo Homem de Almeida Correia ◽  
Dimitris Milakis ◽  
Bart van Arem ◽  
Raymond Hoogendoorn

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