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

Title	Development of Computer-based Remote Technologies and Course Control Systems for Autonomous Surface Ships
Author	Oleksiy Melnyk, Yana Volianska, Oleg Onishchenko, Svitlana Onyshchenko, Olha Kononova, Nadiia Vasalatii
Citation	Vol. 22  No. 9  pp. 183-188
Keywords	Autonomous ship, remote control technologies, ship navigation, course steadiness.