Introduction -- Brain-Computer Interfaces: Recent Advances, Challenges, and Future Directions -- Brain-Computer Interfaces for Affective Neurofeedback Applications -- Pediatric Brian-Computer Interfaces: An Unmet Need -- Brain-Computer Interface-based Predator-Prey Drone Interactions -- Levels of Cooperation in Human-Machine Systems: A Human-BCI-Robot Example -- Human-Machine Social Systems: Test and Validation via Military Use Cases -- The Role of Multimodal Data for Modeling Communication in Artificial Social Agents -- Modeling Interactions Happening in People-Driven Collaborative Processes -- Transparent Communications for Human-Machine Teaming -- Conversational Human-Machine Teaming -- Conversational Human-Machine Interfaces -- Interaction-Centered Design: An Enduring Strategy and Methodology for Sociotechnical Systems -- Human-Machine Computing: Paradigm, Challenges, and Practices -- Companion Technology -- A Survey on Rollator-Type Mobility Assistance Robots -- A Wearable Affective Robot -- Visual Human-Computer Interactions for Intelligent Vehicles -- Intelligent Collaboration Between Humans and Robots -- To Be Trustworthy and To Trust: The New Frontier of Intelligenct Systems -- Decoding Humans' and Virtual Agents' Emotional Expresisons -- Intelligent Computational Eduge: From Pervasive Computing and Internet of Things to Computing Continuum -- Implementing Context Awareness in Autonomous Vehicles -- The Augmented Workforce: A Systematic Review of Operator Assistance Systems -- Cognitive Performance Modeling -- Advanced Driver Assistance Systems: Transparency and Driver Performance Effects -- RGB-D Based Human Action Recognition: From Handcrafted to Deep Learning -- Hybrid Intelligence: Augmenting Employees' Decision-Making with AI-Based Applications -- Human Factors in Driving -- Wearable Computing Systems: State-of-the-Art and Research Challenges -- Multisensor Wearable Device for Monitoring Vital Signs and Physical Activity 1 Integration of Machine Leanring with Wearable Technologies -- Gesture-Based Computing -- EEG-based Affective Computing -- Security of Human Machine Systems -- Integrating Innovation: The Role of Standards in Promoting Responsible Development of Human-Machine Systems -- Situation Awareness in Human-Machine Systems -- Modeling, Analyzing, and Fostering the Adoption of New Technologies: The Case of Electric Vehicles