Title	Digital Management System in a Business Environment
Author	Mariana Veresklia, Nataliia Mykhalitska, Olha Trut, Svitlana Honchar, Stanislav Larin
Citation	Vol. 22  No. 9  pp. 217-223
Keywords	digitalization, digital econimy, digital technologies, digital management, management programs.

Title	Gamification in Educational Institutions: Concepts and Difficulties
Author	Sami Ben Shamlan Bakhit Al-Salami
Citation	Vol. 22  No. 9  pp. 208-216
Keywords	gamification, gaming, game-based learning, educational techniques

Title	A Novel Approach to COVID-19 Diagnosis Based on Mel Spectrogram Features and Artificial Intelligence Techniques
Author	Aseel Alfaidi, Abdullah Alshahrani, and Maha Aljohani
Citation	Vol. 22  No. 9  pp. 195-207
Keywords	Artificial Intelligence, COVID-19 diagnosis, Speech signals, Mel spectrogram features, Transfer learning

Title	Alliance of the Baltic States in the System of Collective Security
Author	Kaspars Kikste, Antonina Djakona
Citation	Vol. 22  No. 9  pp. 189-194
Keywords	a regional security, Baltic-Black Sea Union, security system, prerequisites for the formation