Видання зареєстровані авторами шляхом самоархівування
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Item Development of binary information compression methods based on the binomial numerical function(ПП «ТЕХНОЛОГІЧНИЙ ЦЕНТР», 2021) Кулик, Ігор Анатолійович; Kulyk, Ihor Anatoliiovych; Бережна, Ольга Володимирівна; Berezhna, Olha Volodymyrivna; Новгородцев, Анатолій Іванович; Novhorodtsev, Anatolii Ivanovych; Shevchenko, M.The application of data compression methods is an effective means of improving the performance of information systems. At the same time, interest is aroused to the methods of compression without information loss which are distinguished by their versatility, low needs of costs during implementation, and the possibility of self-control. In this regard, the application of binomial numbering systems is promising. The numerical function of the binomial numbering system is used for compression. It makes it possible to put sequences in one-to-one compliance with their numbers. In this case, the transition from binary combinations to binomial numbers is used as an intermediate stage. During the study, theorems were formulated that indicate properties of compressing and restoring the mappings as well as the ways of their implementation. Models of compression processes were obtained on the basis of a numerical function, both for the case of compressible equilibrium combinations and the case when sequences of a general form are to be compressed. The compression models include coding steps based on binary binomials. The study results show the effectiveness of applying the compression based on the binomial numerical function. A 1.02 times increase in speed of information transmission through a communication channel was observed in the worst case and 18.29 times in the best case depending on the number of ones in 128-bit equilibrium combinations. The proposed methods are advantageous due to their high compression ratio (from 1.01 to 16 times for general 128-bit sequences) and versatility: combinations are compressed in which the number of ones is 75 % of their total variation range. The developed methods ensure control of errors during conversions. They are undemanding to computation resources and feature low implementation costs.Item Optimal Synthesis of Digital Counters in the Fibonacci Codes with the Minimal Form of Representation(PC "TECHNOLOGY CENTER", 2016) Борисенко, Олексій Андрійович; Борисенко, Алексей Андреевич; Borysenko, Oleksii Andriiovych; Маценко, Світлана Михайлівна; Маценко, Светлана Михайловна; Matsenko, Svitlana Mykhailivna; Кулик, Ігор Анатолійович; Кулик, Игорь Анатольевич; Kulyk, Ihor Anatoliiovych; Бережна, Ольга Володимирівна; Бережная, Ольга Владимировна; Berezhna, Olha Volodymyrivna; Маценко, Олександр Михайлович; Маценко, Александр Михайлович; Matsenko, Oleksandr MykhailovychЗапропонований метод лічби у кодах Фібоначчі з мінімальною формою представлення і надана його модель в вигляді набора логічних операцій, що ведуть до фібоначчієвої лічби. На цій основі був розроблений метод оптимального синтезу лічильників Фібоначчі з мінімальною формою відповідно до умов його роботи. Надана оцінка завадостійкості лічильників Фібоначчі з мінімальною формою.Item Phase composition and physical properties of Co-Cr base coating(Видавництво СумДУ, 2011) Погребняк, Олександр Дмитрович; Погребняк, Александр Дмитриевич; Pohrebniak, Oleksandr Dmytrovych; Кулик, Ігор Анатолійович; Кулик, Игорь Анатольевич; Kulyk, Ihor Anatoliiovych; Rogoz, V.M.; Tyurin, Yu.N.; Kirik, G.V.; Alontseva, D.L.; Kolisnichenko, O.V.; Phase composition and physical properties of Co-Cr base coatingCoating structure was mainly composed of α-fcp- and β-fcc-cobalt. Selected temperature interval for coating formation, according to XRD analysis, allowed us to form inter-metalloid compounds of CoxCry-type cobalt with chromium. Subsequent melting of a surface layer by a plasma jet resulted to doping of the coating surface by Mo atoms (compounds) from doping electrodes. It was demonstrated that essential improvement of servicing characteristics was due phase transformations induced by high-temperature plasma jet, Mo doping, redistribution of elements in the coating, and appearance of micro- and nano-grained structure, as well as decreasing porosity due to repeated melting. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/20651