Agents and Multi-agent Systems as Actor-networks Topics: Agent Models and Architectures; AI and Creativity; Autonomous Systems; Cognitive Systems; Collective Intelligence; Cooperation and Coordination; Hybrid Intelligent Systems; Mobile Agents; Multi-Agent Systems; Self Organizing Systems In Proceedings of the 12th International Conference on Agents and Artificial Intelligence - Volume 1: ICAART, 179-184, 2020 , Valletta, Malta