Interaction Modeling in PRACTICE - CTT Vs. SCXML - A Comparison of Two Practical Solutions Applying Interaction Modeling Techniques for Multimodal User-System Interaction Topics: Accessibility Software; Affective Communication; Assistive Technology and Adaptive Systems; Graphical User Interfaces; Intelligent Companions; Personalized Interfaces; Ubiquitous Computing In Proceedings of the 1st International Conference on Information and Communication Technologies for Ageing Well and e-Health ICT4AgeingWell - Volume 1, 243-250, 2015 , Lisbon, Portugal