The substantiation method of development staging of passenger technical stations is offered. It allows to ensure the efficiency of capital investments due to gradual raising of track development and facilities of passenger technical stations. The method is based on use of dynamic programming.
The questions of estimation procedure preparation of technological stability of freight station functioning are examined. Doing so it takes into account that technological stability of freight station functioning depends on operational reliability of its technological subsystems. In this article there are the formulas allowing to determine an additional waiting time of beginning of maintenance in the freight station unit if there are refusals, and also the total excess of the standard time of car staying in the concrete unit.
L.A.Baranov, I.S.Melyoshin, L.M.Chin'
The mathematical problem definition of energy-optimal dispatching of a regenerative braking train and its decision on the basis of a maximum principle are submitted. Examples of energy-optimal trajectory testing on Moscow and Hanoi underground lines are given.
The program of simulation model for research of the automated system of ticket reservation on transport is considered. The optimization technique of parameters of projected queuing systems is given.
The modes of characterization of a rail line (electric resistance of rails and resistance of insulation of a rail line) are considered. Methods of measurement and checkout of initial parameters are given. Results of experimental researches are stated.
The mathematical model with which help it is convenient to automatize the standard checks of cross sections of ferroconcrete superstructures of overhead roads of any configuration is offered. The spatial case with three-component loading is examined in detail. The generic description of assigned task solution algorithm and the example of implementation are resulted. It is shown how in the given model it is possible to present the standard checks of ferroconcrete superstructures.
A.S.Anisimov, E.I.Skovorodnikov, O.V.Balagin, Yu.B.Grishina
The improved analysis technique of indicator diagrams of the diesel engines is offered. This technique takes into account relative losses of heat at fuel combustion in cooling system on each rotation angle of a crankshaft during combustion and "pure" compression and expansion processes.
The decision of a choice problem of optimum discrete modes of drying of the humidified insulation of traction engines of electric locomotives is considered. Technical and economic criteria of efficiency for quality characteristic of repair and maintenance of traction engines of electric locomotives used for optimization problem formulation are chosen.
The reasons and features of loyalty formation of intermediaries in distribution channels are considered.
Results of marketing researches of use of rail buses in the suburban service are given.
The improved filled device with a vertical axis of rotation of a blade rotor is submitted. Analytical dependences for determination of power inputs connected with operation of a ripper are received.
O.V.Sachkov, G.I.Chistoborodov, V.A.Aksyonov, O.S.Yudaeva
The nonwoven linen material NO- L-1 and on its basis - the composite duplicated material NO- L-1€ are developed and put on serial production. The latter consists of a nonwoven substrate on one side of which an aluminium foil is fixed with the help of heat-resistant glue. This material is recommended to use in the internal equipment of passenger cars of new construction and after overall reconditioning.
The demands made to quality of education are submitted, and also the questions of quality control of educational services are examined. The parameters of integrated quality assessment of higher professional education in railway universities are given.