Malakhova D. Computer decisions support models and methods in information systems for cargo operations preparation on tankers.

The dissertation is devoted to the development and improvement of models and methods and computer support of solutions based on modeling and visualization of flow data to reduce the time spent on the process of inertization of cargo holds on tankers. The scientific novelty of the obtained results of the dissertation, namely: The first point of scientific novelty was obtained, specifically: a multilevel classification of models by levels of the computational complexity of differential hydrodynamic equations for modeling aerodynamic flow data in limited conditions was developed for the first time, which allowed conducting a quantitative and qualitative analysis of tanker inertizing process with different time costs and different levels of quality of decision making. The second point of scientific novelty is obtained, specifically: improvement of calculation model of aerodynamic flow data due to their four-dimensional reproduction with the subsequent representation in the form of one-dimensional arrays and their further calculation taking into account results of the previous settlement levels that allow reducing AFDs computation time with only a slight increase in computer RAM. The third point of scientific novelty was obtained, specifically: the development of a method of calculating flow data based on their proposed four-dimensional model, which consists in splitting a multidimensional process into a sequence of one-dimensional ones, based on the generalized Huygens-Hadamard principle, which significantly reduced modeling time of interizing process of the vessel and provides visualization of relevant information for decision-making when preparing cargo operations on tankers. The fourth point of scientific novelty is obtained, specifically: firstly proposed method of decision support for cargo holds of tankers inertizing , which is based on the use of the developed classification of computational complexity, improved model for calculating aerodynamic flow data and the method of computing, which allows developing information technology of computer decision-support and makes it possible to significantly reduce the technological time of the inertizing process.