Title	Introducing Contemporary Blockchain Platforms
Author	Malak Suliman Alrumaih
Citation	Vol. 21  No. 4  pp. 9-18
Keywords	Blockchain, platforms, Distributed Ledger, Bitcoin, Decentralized Trust. Ethereum, Hyperledger

Title	Real-Time Control System
Author	Atef Gharbi
Citation	Vol. 21  No. 4  pp. 19-27
Keywords	Task, Real-Time System, Architecture, Scheduling

Title	Theoretical Basis of Studying the Educational Environment with the Application of GR-Technologies
Author	Inna Romanchenko, Olena Vasylevska, Svitlana Haltsova, Hanna Babicheva, Natalia Batsula, Hanna Kravchenko, Aelita Lytvyn
Citation	Vol. 21  No. 4  pp. 28-32
Keywords	GR-activities, GR technologies, Education system, Media relations, Public-private partnership, Lobbying.

Title	Intelligent Route Construction Algorithm for Solving Traveling Salesman Problem
Author	Md. Azizur Rahman, Ariful Islam, and Lasker Ershad Ali
Citation	Vol. 21  No. 4  pp. 33-40
Keywords	Combinatorial Optimization, Traveling Salesman Problem, Ratio Value, Constructive Algorithm.