Author
Author's articles (2)
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#3 / 2011 Category: INDUSTRY-SPECIFIC AND INTER-INDUSTRY-SPECIFIC COMPLEXESAs a result of structural reform of Russian railways, a host of agents that provide customers with loading resources, especially wagons for transport by railway. These processes reduce in efficiency of the car fleet, increasing transportation costs, shortage of cars for many customers, an increase of empty runs and, as a result, a depletion of a number of sections of the network carrying capacity at a reduced total volume of rail traffic. The article describes the reasons for this situation due to the mismatch occurred heterogeneity of rolling stock to existing planning conditions and tariffs. It is also shown that the inefficiency of decentralized car fleet contributes to the predominance of tree-type network, and the importance of this factor in the new environment has increased substantially. To ensure the efficient operation of rail transport as a systemic industry, providing mass-haul transport, it is proposed for integration into a regional logistics. Freight terminals regional logistics transportation and distribution system (RLTRS) is appropriate to create on the basis of major freight railway stations. Thus, the adaptation of planning car traffic volume and train formation to modern standards, the establishment of tariff incentives and long-term changes in network configuration are considered as a prerequisite for the transformation of local transport and technological systems on the network of Russian railways into the integrated transport and logistics systems.
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#4 / 2014 Category: BRANCH AND INTER-BRANCH COMPLEXESIn the article, some results of modeling of regional transport network on the basis of the model of its hypergraph are presented. That allows to formalize the large volume of diverse data in the conditions of their incompleteness and stand as an allocation and solution of transport and logistic tasks for space of the whole region. The method of multiobjective optimization, realized according to the principle of dual management on the basis of the hypergraph and its clustering, gives the option to reason and range the segments of network according to both the criterion of fitting of infrastructure condition to the target indicators of the realized strategy of region’s development, and the return influence of transport infrastructure on development of region’s economy. Usually, for the transport tasks solved by the hypergraph theory, the static statement is used, the algorithm of dual management applied by the authors allows to solve a problem of the network optimization in dynamics of initial information. Approbation of the offered method is carried out on the example of Sverdlovsk region. The network is analyzed on the compliance with the most probable scenario set in the program and strategic documents. The conclusion according to the results made about the priority development paths connecting development areas and the transport network clusters corresponding to them.