Browsing by Author "Pobochii, Ivan A."

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    Development of a Linear-Scaling Consensus Mechanism of the Distributed Data Ledger Technology
    (Springer, Singapore, 2022) Shvachych, Gennady G.; Pobochii, Ivan A.; Sashchuk, Hanna; Dzhus, Oleksandr; Khylko, Olena; Busygin, Volodymyr
    ENG: The paper proposes and explores a new blockchain system that operates on a linearly scalable consensus mechanism. This selection method confirms the shard through shares voting and scalable random generation by VDF (Verifiable Delay Function) and VRF (Verifiable Random Function). The system analyzes available consensus mechanisms, sharding, and the age of distributed randomness. It is energy efficient, fully scalable, secure, with fast consensus. Compared to available methods, the improved shard method performs network connection and transaction verification and reveals the state of the blockchain. The threshold has a sufficiently low coefficient for small validators to participate in the network and receive rewards. The proposed sharding process runs securely due to a distributed randomness (DRG) process that is unpredictable, impartial, and verified. The network is constantly overloaded to prevent slow adaptive Byzantine malicious validators. Contrary to other sharding blockchains that require Proof-of-Work to select validators, the proposed consensus is attributed to Proof-of-Stake, therefore, energy-efficient. Herein the consensus is achieved by a BFT algorithm which is linearly scalable and faster than PBFT.
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    Load Control Operational Correction of a Blast Furnace Based on the Correlation Models
    (Croatian Metallurgical Society (CMS), Zagreb, Croatia, 2024) Shvachych, G.; Mamuzich, I.; Selegej, A. M.; Мoroz, B.; Kadylnykova, T.; Pobochii, Ivan A.; Мoroz, D.; Friman, Y.
    ENG: The paper uses regression analysis to research the movement dynamics of charge materials along the paths of a blast furnace coneless loader device. The research’s main goal is to consider two main factors when optimizing the loading process of the blast furnace - the opening degree of the charge shutter of the loading device hopper and the inclination angle of the distribution tray. That approach allows the optimization of the loading impact, taking into account the current change in the granulometric parameters of the blast furnace charge. A model for determining the dynamic parameters of the charge flow in the case of its movement along the paths of the blast furnace coneless loading device has been developed.
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    Main Mechanisms of Blockchain Technology Implementation in Digital Technologies Application
    (Dnipro University of Technology, Dnipro, Ukraine, 2022) Shvachych, Gennady Grygorovych; Moroz, B. І.; Pobochii, Ivan A.; Timchenko, О. P.; Kozenkova, V. D.; Busygin, V. V.
    ENG: Purpose. To analyze the basic principles of blockchain technology implementation, highlighting the algorithms for reaching consensus in the blockchain network to ensure its reliability; to identify key problems in the implementation of such technology and suggest ways to overcome them; to perform a systematic analysis of the blockchain technology contradictions and suggest ways to eliminate them. Methodology. The research used the basics of economic analysis of economic entities to compare their management’s centralized and decentralized models. This approach showed that another wave of transformation of business and social models has unfolded in recent years, caused by the next-generation digital technologies involving the economy’s transition to the digital area. Revealing the blockchain technology mechanisms is based on modern databases and peer-to-peer computer networks, covering in detail the main means of contradictions, application, and implementation of blockchain technology. Findings. The main results of these studies are obtained in the digital economy. The paper shows that digital technologies open up a wide range of opportunities for different sectors of the economy. The research highlights the features and principles of distributed registry technology (Blockchain) applications. It is shown that as a decentralized data registry, blockchain technology is themost discussed and relevant topic in the digital economy. Originality. The paper further developed the main component of the digital economy, which is progressing most intensively, – the distributed ledger technology (Blockchain). The paper analyzed its strengths, such as cost reduction, increased security, and transparency of transactions that attracted the attention of various sectors of the economy. The authors’ approach for eliminating the revealed mechanisms of contradictions, application, and implementation of blockchain technology is presented. The definition of the digital economy, digital technologies in the economy, and “end-to-end” digital technologies have been improved to clarify the understanding of the economic management decentralization problems. That showed that the digital economy has several subtleties associated with insufficient research and comprehension of technical implementation and flexibility. Practical value. The research results will be useful for expanding ideas about the blockchain technology implementation in different sectors of the economy, accompanied by lower costs, increased security and transparency of economic entities, and improving their economic efficiency and development in digital technologies’ application. The blockchain technologies implantation at the enterprises of the mining and metallurgical industry allows making the production and sales of products more efficient and transparent, and at the same time significantly reduces the human factor.