D.S. Zlobin, Yu.N. Urtmintsev
The basic diagrams of development of export freight transportations and the determination technique of zones optimality, development of freight flows by different kinds of transport are considered. The question of competitive ability of participation in separate segments of the market of transport services of the "river-sea" navigation vessels is raised also. The comparative analysis and the cost calculation of development of the mixed "river-sea" transportation by different kinds of transport are submitted.
Five methods of envelope restoration of discrete counts at their regular arrangement are considered. Formulae were brought to the operational programs in a mathematical Mathcad package.
A.O. Lin'kov, O.V. Mel'nichenko, A.Yu. Portnoy, S.G. Shramko
The circuit solution of the rectifying installation of excitation on the basis of IGBT transistors with a new control way is developed. It allows to raise power indicators of an electric locomotive of alternating current in a regenerative braking mode. The model-based analysis confirmed that this solution allows to increase the return of active energy to a contact system approximately for 5-6%.
V.Yu. Gorelik, M.A. Zotova
The solution of an optimal choice problem of data processing centers and the redistribution of computational power of mainframes in the corporate network is described. The search of the optimum placement of data processing centers is made by the direct enumeration technique with elimination of options at which in a network there is no stationary (established) operating mode.
V.A. Aksyonov, A.S. Ilyinykh, A.V. Matafonov
The main rail defects arising at operation are considered. The defect elimination with the use of technology of profile grinding of rails minimizes the number of the factors negatively affecting an operational life of rails, thereby reducing the number of technological actions on maintenance and repair of a rail track.
The situational model of operational decision making in case of an unforeseen situation on a route, the updating of the basic plan and the choice of a new delivery route is considered. The problem of a multicriterion choice of routes of delivery in the conditions of the uncertainty based on the fuzzy-set theory is solved. The ranging of alternatives of a set of routes is carried out, and the best alternative of a new route on the basis of fuzzy sets is chosen.
P.A. Kozlov, V.Yu. Permikin
The stations in the junction interact through the car flows, not only their size and also the parameters being of primary importance. It is offered to represent processes of the car flow transformation as the active conversion of their properties or decrease of disorganization accompanying naturally all station processes. The problem statement of optimization of transportation processes in the form of the best possible construction of the change dynamics of the car flow properties is defined.
The bases of resource methodology of design of complex-structured objects on the example of a transport complex are presented. The methodology of new approach is directed on overcoming of design complexity of objects of the non-numeric nature. The main terms and definitions, ways and formalization schemes are described.
S.N. Glagolev, N.G. Gorshkova, N.S. Sevryugina, A.A. Konev
The concept of formation of a regional cluster in the sphere of wayside service of the Korochansky district is offered. The basic principles of location of enterprises forming a cluster of wayside service of a regional level are formulated. Classification of elements of infrastructure of wayside service is offered.
A.V. Gorelik, V.V. Shuvayev, D.E. Minakov
The organization of train operation with speed of 250 km/h and more demands another non-traditional methods and mechanisms of the solution of tasks ensuring the reliable functioning of the transport conveyor and the traffic safety. The authors propose technical solutions on the aerodynamic stabilization of the wayside signals and interlocking at the organization of train operation with speed more than 200 km/h.
A number of conceptual and practical solutions on the application of the object-oriented approach to improvement the reliability and efficiency of the system of technical operation of the technological machine complexes is offered. These solutions are based on the analysis of work and the technical condition of each machine as an object in the structure of complexes of technologically interconnected track and way construction machines for the achievement of goals.
A.S. Serebryakov, D.A. Semyonov
The device for diagnostics of a condition and an assessment of the remained resource of the main insulation of transformers of the longitudinal power supply line of the railways is offered. The self-discharge voltage is used as a diagnostic parameter.
The question of reduction of diesel engines emissions is considered at application of an antiwear magnetic additive on the basis of the oleic acid made on nanotechnology. Molecules of oleic acid are adsorbed on the magnet surface as a result of chemisorption process.
V.A. Aksyonov, A.M. Zavyalov, A.V. Matafonov, Yu.V. Zavyalova
Questions of formation of a technique of analysis and assessment of occupational risks are considered as a modern tool for raising the efficiency of the labor protection control system by labor protection.
The main problems of improvement of the organization of production, the investing of production processes on a railway transport are considered.