Title	Optimization of Agri-Food Supply Chain in a Sustainable Way Using Simulation Modeling
Author	Viktorija Vostriakova, Oleksandra Kononova, Sergey Kravchenko, Andriy Ruzhytskyi, Nataliia Sereda
Citation	Vol. 21  No. 3  pp. 245-256
Keywords	Logistics Distribution System, Logistic Loss, Agri-Food Supply Chain, Sustainable Development, Agricultural Products, VSM-Analysis, Simulation Modeling.

Title	Methods of regulating migration processes in EU countries
Author	Oksana Hamova, Anna Dergach, Oksana Pikulyk, Irina Zolotykh, Kateryna Diachenko
Citation	Vol. 21  No. 3  pp. 257-265
Keywords	Migration, Migration Flows, Migration Policy, Migration Flow Management Mechanism, Mobility of Human Capital.

Title	Utilities Market: The Sphere of Protection of Subjects
Author	Gulnara Dzhumageldiyeva, Inna Zablodska, Irina Yukhymenko-Nazaruk, Vita Dovgaliuk, Irina Suprunova, Ulyana Gylka
Citation	Vol. 21  No. 3  pp. 266-274
Keywords	Poverty Prevention, Legislation Of Ukraine, Protection Of Rights, Rule Of Law, Public Utilities, Targeted Subsidy, Commercial Accounting, Debt.

Title	A New Model to Enhance Efficiency in Distributed Data Mining Using Mobile Agent
Author	Saeed Ngmaldin Bardab., Tarig Mohamed Ahmed
Citation	Vol. 21  No. 3  pp. 275-286
Keywords	Distributed data mining, Mobile Agent System.