Gaba V. Optimization of railway transport system parameters aimed at acceleration of cargo delivery.

The purpose of theses is to impore the orgazation and technology for transportation in the railway transport system (RTS) inorder to accelarate freight delivery on the basis of system approach to the choice of the most important parametrs of RTS and to create economic-matematical models for their optimization/ The following main tashs have been formulated and solved in the work in order active the purpose: definitionof the couception RTS, decompositoo of this system and its parametrs of sufficent level, that are typical for the purpos of reserch; definition of interactions and mutual influance of quantitative and qualitative parametrs for the functioning of RTS; analysis of defined indeces dynamics for the functioning of RTS; maring economic-matematical modeles for optimization of difined processes and parametrs of RTS, that ae typical for accelaration of freight delivery/ The object of reserch is railway transport system (RTS) in the part, that conerns the accelaration of freight delivery. The methodsof reserch are system analysis, correlative analysis, the methods of matimatical statition and the theony of probality, the methodes of optimisation of matematical models parametrs. The sientific innovation of received results is that for the first time: the strstegy and tactics of passing sorting yards and system to day-time work; have been grounded; the methods of technical-economic ground of optimum rate of freight trains mass (formation) depending on coudition of their movement organization have been applied; methods of technological-economic ground of optimum correlation of mass and spud of freight trains have been proposed; methodes of forecasting freight delivery at concrete route in correspondinj period have been made. Practical impotrnce of received resultes: The development of methodes for fforecasting freight delivery in correspouding period on the basis of optimization of RTS parametrs is the most essential for achieving formulated purpose. The results of research works carvied out in accordauce with the agreement wirh UkrZaliznytsia are used in practical activity by the customer. The work of optimization of train formation dependong on carrying capacity has been formulated and solved; the criterion of sorting yards operation during day-time regime has been formulated; the task of correlation optimization of mass and speed of acceleration of freight trains has been formulated and solved. The degree of introductio: separet results are used in the service on railways of Ukraine. The sphere of usege: devision and sorting yards railways.