Vozna N. Theory, methods and tools of structuring multifunctional data in distributed computer systems

The scientific novelty of the obtained results: The following issues were developed for the first time: the concept of structuring multifunctional data, which allowed us to generalize the fundamental foundations of the theory of structural transformations of information flows in distributed cyberphysical systems; new criteria for assessing the structural and information-structural complexity of multifunctional data, which makes it possible to formalize the analysis and improve the results of the synthesis of system characteristics of the advanced DCS components; theoretical principles of the following methods: 1) the method of structuring MFD in Rademacher’s, Rademacher-Krestenson’s and Haar-Krestenson’s Number Systems, which allowed us to reduce the computational complexity and increase the speed of digital data processing; 2) the method of determining the entropy of a quasi-stationary object states, which allowed us to expand the functionality of determining and refining the statistical and spectral characteristics of the information source; 3) the method of converting codes of RGB-pixels of color images by encoding them in Krestenson’s and Haar-Krestenson’s Number Systems, which makes it possible to convert pixel codes from three-dimensional code system into one-dimensional system in comparison with the existing method in Rademacher’s system; 4) the method of integral and differential processing of harmonic signals, which in comparison with the existing methods, allows identifying such disturbances as load surges, short circuits and powerful electric drives starting up, which are invariant to the threshold changes of phase current amplitudes in power lines; 5) the method of monitoring the quasi-stationary object states on the basis of the characteristic functionality of the parameters of the technological process and the construction of the image-cluster model, which increased the ergonomics and response speed of CS operators in emergency situations. Тhe method of synthesized generation of alphanumeric data was improved, which allowed us to increase their cryptosecurity. Тhe method of cryptoprotection of color image pixels was further developed by their convolution with pseudo-random sequences.