Ganna Volkovska

The impact of technological downtime during the reloading of isothermal containers on the economic efficiency of temperature-sensitive cargoes multimodal transportation was investigated. The features of the cold chain functioning are considered in the conditions of maritime and rail transport interaction, where the reloading process is tracked by a temporary loss of power supply to containers. The mathematical model of non-stationary heat transfer has been developed, taking into account the interaction of the "environment - container - cargo" system and allows to assess the change in temperature over time. The modeling was performed for different cargo types (chilled beef, poultry, seafood) taking into account seasonal factors, in particular summer and winter operation conditions. The exponential nature of temperature changes have been established and the maximum time for containers to remain without power supply have been determined. An approach to the economic assessment of losses based on the relationship between temperature deviations, the duration of their impact and the reduction in product quality is substantiated. It has been shown that even short-term downtime can lead to significant economic losses associated with decrease in goods commodity value. It has been confirmed that ensuring continuity of temperature control and optimizing reloading operations are the key factors in increasing efficiency of multimodal transportation.

The scientific-practical basis of the quality of passenger and clientele service at the airport were studied. This was prompted by the need to determine the role of aviation safety (AS) and its impact on the quality and competitiveness of airport services. It was proved that within the framework of the system, quality monitoring is performed in the areas of the service of aviation safety (SAS). As a result of research, a quantitative assessment of the level of aviation safety of the airport, which is the basis for making a relevant management decision in the analysis subsystems, was determined. Management , in this case, implies the system of measures to improve the activities of the SAS. A procedure for assessing the quality of airport services, which reveals the essence of aviation safety in the system of airport quality management , was devised. The sequence of assessment of the system of aviation safety, reflecting the cost approach, the application of which involves determining the reserves for ensuring aviation safety in the continuous implementation of the quality management system, was proposed. The share of costs of aviation safety (AS) was determined on the example of three airports by economic elements (the model of criteria for choosing a subject) to determine the cost of ensuring an adequate level of aviation safety. It was proposed to introduce a comprehensive indicator of the quality of aviation safety for its functional components, which further makes up the integrated indicator of the quality of provided services. As a result of calculations, the amount of payment for aviation safety using adjustment coefficients to counteract the threat of a possible act of unlawful interference (AUI) will increase. This enables an aircraft company to form timely a reserve to prevent or eliminate the consequences of the AUI by including the aviation safety fee in the total cost of air transport services.