Перегляд за Автор "Kasianova, V. A."

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  • Ескіз
    Документ
    Institutional and institutitutionalizmal factors of the anti- crisis policy of the transport brunch
    (2021) Kotenko, S. V.; Kasianova, V. A.; Maslii, Natalia D.; Маслій, Наталя Дмитрівна; Маслий, Наталья Дмитриевна
    The threat of crises for Ukraine's transport sector has been increasing in recent times. This is compounded by the crisis in the global economy, the intermittent changes in the national currency, the eclecticism and disorder of the Ukrainian transport system, also technological and technical obsolescence of infrastructure. Obviously, the transport industry needs institutional and institutitutionalizmal changes. This is indicated by numerous scientific papers. However, insufficient attention is paid to the development of methodological issues and practical recommendations in this field. It is characterized by the fact that, in particular, in the Framework Standards for Security and Facilitation of World Trade, the Customs Code of Ukraine lacks definitions of “reliability” and “security”. Too vulnerable to hazards are the state-of-the-art cargo transportation destinations - multimodal (MMT) and intermodal (IMT) transportation. This is due to the fact that, MMT and IMT, in the main they are transboundary and by its nature their efficiency and quality are conditioned by the coherence of the different kinds of transport, therefore, they are derived from the properties of the whole system, in particular its emergence and consistency.
  • Ескіз
    Документ
    Optimization of the management system for mitigating the consequences of water area pollution during the crisis
    (2021) Kotenko, S. V.; Maslii, Natalia D.; Маслій, Наталя Дмитрівна; Маслий, Наталья Дмитриевна; Kasianova, V. A.; Bezpartochnyi, M. G.; Nadtochii, I. I.; Kотенко, C. В.; Касьянова, В. A.; Безпарточний, М. Г.; Надточій, І. І.
    The study is aimed at optimizing and reducing delays in crisis situations in the operation of decision support systems to eliminate the consequences of pollution of water areas. Methodology. The presented study uses the fundamental provisions of modern science to fi nd the optimal solution in crisis situations. Methods of abstraction and mathematical formalization were used to solve the problem of minimizing the delay time of information packets in providing critical information in conditions of overloading information channels. Findings. It has been proven that a decrease in the volume of losses is possible in the case of eff ective management of the elimination of pollution, prompt minimization of its consequences. It has been established that the eff ectiveness of management to minimize the consequences of an accident is determined by the eff ectiveness of the information system, and largely depends not only on relevant information, but also on the timeliness of its receipt by the subject of decision-making. A mathematical model and an algorithm for optimizing information fl ows have been created, which provide minimal delays in obtaining information even under conditions of extreme load of the information system. It has been proven that the task of eff ective management of an information system can be reduced to minimizing the delay in the provision of critical information. As a result of the study, it was found that for a large information system, which includes more than forty subunits and satellite systems, the use of the proposed approach provides a decrease in the response delay to an information request of time, which does not exceed a minute. Originality. To prevent delays in the operation of the information management system for the elimination of pollution of water areas, a scientifi c and applied approach to optimize the information system is proposed, which uses the theory of graphs and Ant Colony Optimization Algorithm and implements eff ective management of information fl ow. A mathematical model and an original algorithm have been developed that allow reducing delays in work and providing a resource utilization factor better than the existing analogues. Practical value. The presented approach will make it possible to increase the effi ciency and reliability of information systems for managing technogenic pressure on water areas in crisis situations, reduce the time for providing the necessary information and, thereby, reduce the consequences of pollution and the costs associated with their neutralization. The data obtained in the course of the study are approximated by a polynomial equation, making it possible to evaluate the eff ectiveness of using the proposed method depending on the number of nodes of the information system and the requirements for limiting the delay time of information.