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Journals

  1. Vorvilas, G., Liapis, A., Korovesis, A., Aggelopoulou, D., Karousos, N., Eftsathopoulos, E. (2022). Conducting Remote Examinations in Higher Distance Education During Covid-19 Pandemic: Students’ Perspectives. Turkish Online Journal of Distance Education (in production). (Q2 – Scimago Ranking)

  2. Liapis, A., Maratou, V., Panagiotakopoulos, T., Katsanos, C., & Kameas, A. (2022). UX evaluation of open MOOC platforms: a comparative study between Moodle and Open edX combining user interaction metrics and wearable biosensors. Interactive Learning Environments, 1-15. (Q1 – Scimago Ranking)

  3. Liapis, A., Faliagka, E., Antonopoulos, C. P., Keramidas, G., & Voros, N. (2021). Advancing Stress Detection Methodology with Deep Learning Techniques Targeting UX Evaluation in AAL Scenarios: Applying Embeddings for Categorical Variables. Electronics, 10(13), 1550. (Q2 – Scimago Ranking)

  4. Liapis, A., Katsanos, C., Karousos, N., Xenos, M., & Orphanoudakis, T. (2021). User experience evaluation: a validation study of a tool-based approach for automatic stress detection using physiological signals. International Journal of Human–Computer Interaction, 37(5), 470-483. (Q1 – Scimago Ranking)

  5. Liapis, A., Katsanos, C., Sotiropoulos, D. G., Karousos, N., & Xenos, M. (2017). Stress in interactive applications: analysis of the valence-arousal space based on physiological signals and self-reported data. Multimedia Tools and Applications, 76(4), 5051-5071. (Q1 – Scimago Ranking)

  6. Chatzidaki, E., Liapis, A., Tsironis, A., Xenos, M., & Kostaras, N. (2014). Users’ emotional experience using different modalities: a comparative study. International Journal of Web Engineering and Technology, 9(2), 148-163. (Q4 – Scimago Ranking)

 

Conferences​

  1. Liapis, A., Zournatzidou, G., Triantafyllou, A., Genni, A., & Sarigiannidis, P. (2025). Leveraging Digital Twins for stress detection in User Experience context: A combined approach using personality-traits and physiological-data. In Proceedings of the 16th Biannual Conference of the Italian SIGCHI Chapter (CHItaly 2025). (in press; details TBD).

  2. Liapis, A., Georgakakou, E., & Kameas, A. (2025). Combining Heuristics and User Testing: Towards a Holistic Approach in User eXperience (UX) Evaluation of Open MOOC Platforms. Accepted for publication at the International Conference on Human-Computer Interaction HCII2025, 22-27 June 2025.

  3. Vorvilas, G., Liapis, A., Karousos, N., & Kameas, A. (2023, May). Effects of Students’ Written Assignments Grading on Tutors’ Evaluation: An Empirical Research in Open and Distance Education. In 2023 IEEE Global Engineering Education Conference (EDUCON). IEEE.

  4. Vorvilas, G., Liapis, A., Karousos, N., Theodorakopoulos, L., Lagiou, E., & Kameas, A. (2023, July). Faculty members' perceptions of remote electronic examinations in distance academic education. In 2023 14th International Conference on Information, Intelligence, Systems & Applications (IISA) (pp. 1-6). IEEE.

  5. Vorvilas, G., Liapis, A., Korovesis, A., Athanasakopoulou, V., Karousos, N., & Kameas, A. (2022). Evaluating the quality of master’s thesis supervision in academic distance education: Hellenic Open University students’ perceptions. The Innovating Higher Education conference 2022 (EADTU). Proceedings of the Innovating Higher Education Conference 2022, EADTU, 2022, pp. 472-485, ISBN: 9789079730452

  6. Katsanos, C., Zafeiriou, G., & Liapis, A. (2022). Effect of self-efficacy on open card sorts for websites. In International Conference on Human-Computer Interaction (pp. 75-87). Springer, Cham.

  7. Vorvilas, G., Liapis, A., Korovesis, A., Aggelopoulou, D., Karousos, N., Efstathopoulos, E., Zoras, I. (2021). Remote electronic examinations in the Hellenic Open University during COVID-19 pandemic: Student and faculty perceptions. Proceedings of the Innovating Higher Education Conference 2021, EADTU, 2021, pp. 364-377, ISBN: 9789079730483

  8. Zafeiriou, G., Katsanos, C., & Liapis, A. (2021, November). Effect of Sense of Direction on Open Card Sorts for Websites. In CHI Greece 2021: 1st International Conference of the ACM Greek SIGCHI Chapter (pp. 1-8).

  9. Katsanos, C., Tselios, N., Liapis, A. (2021, November). PSSUQ-GR: A First Step Towards Standardization of the Post-Study System Usability Questionnaire in Greek. In CHI Greece 2021: 1st International Conference of the ACM Greek SIGCHI Chapter (pp. 1-6).

  10. Liapis, A., Faliagka, E., Katsanos, C., Antonopoulos, C., & Voros, N. (2021, August). Detection of Subtle Stress Episodes During UX Evaluation: Assessing the Performance of the WESAD Bio-Signals Dataset. In IFIP Conference on Human-Computer Interaction (pp. 238-247). Springer, Cham.

  11. Liapis, A., Vorvilas, G., Korovesis, A., Aggelopoulou, D., Karousos, N., & Efstathopoulos, E. (2021, April). Evaluating the remote examination process applied by the Hellenic Open University (HOU) during COVID-19 pandemic: Students’ opinions. In 2021 IEEE Global Engineering Education Conference (EDUCON) (pp. 924-927). IEEE.

  12. Liapis, A., Katsanos, C., Karousos, N., Sotiropoulos, D., Xenos, M., & Orphanoudakis, T. (2020, July). Stress Heatmaps: A Fuzzy-Based Approach that Uses Physiological Signals. In International Conference on Human-Computer Interaction (pp. 268-277). Springer, Cham.

  13. Liapis, A., Katsanos, C., Karousos, N., Xenos, M., Orphanoudakis, T.: UDSP+: Stress Detection Based on User-reported Emotional Ratings and Wearable Skin Conductance Sensor. In: Adjunct Proceedings of the 2019 ACM International Joint Conference on Pervasive and Ubiquitous Computing and Proceedings of the 2019 ACM International Symposium on Wearable Computers. pp. 125–128. ACM, New York, NY, USA (2019).

  14. Liapis, A., Katsanos, C., Xenos, M., Orphanoudakis, T.: Effect of Personality Traits on UX Evaluation Metrics: A Study on Usability Issues, Valence-Arousal and Skin Conductance. In: Extended Abstracts of the 2019 CHI Conference on Human Factors in Computing Systems. p. LBW2721:1–LBW2721:6. ACM, New York, NY, USA (2019).

  15. Liapis, A., Katsanos, C., Xenos, M.: Don’t Leave Me Alone: Retrospective Think Aloud Supported by Real-Time Monitoring of Participant’s Physiology. In: Kurosu, M. (ed.) Human-Computer Interaction. Theories, Methods, and Human Issues. pp. 148–158. Springer International Publishing (2018)

  16. Liapis, A., Katsanos, C., Sotiropoulos, D., Xenos, M., Karousos, N.: Recognizing emotions in human computer interaction: studying stress using skin conductance. In: Abascal, J., Barbosa, S., Fetter, M., Gross, T., Palanque, P., and Winckler, M. (eds.) Human-Computer Interaction – INTERACT 2015. pp. 255–262. Springer International Publishing (2015).

  17. Liapis, A., Katsanos, C., Sotiropoulos, D., Xenos, M., Karousos, N.: Subjective assessment of stress in HCI: a study of the valence-arousal scale using skin conductance. In: Proceedings of the 11th Biannual Conference on Italian SIGCHI Chapter. pp. 174–177. ACM, New York, NY, USA (2015). (Selected among best papers)

  18. Liapis, A., Katsanos, C., Sotiropoulos, D., Xenos, M., Karousos, N.: Stress recognition in human-computer interaction using physiological and self-reported data: a study of gender differences. In: Proceedings of the 19th Panhellenic Conference on Informatics. pp. 323–328. ACM, New York, NY, USA (2015).

  19. Liapis, A., Karousos, N., Katsanos, C., Xenos, M.: Evaluating user’s emotional experience in HCI: the physiOBS approach. In: Kurosu, M. (ed.) Human-Computer Interaction. Advanced Interaction Modalities and Techniques. pp. 758–767. Springer International Publishing (2014).

  20. Liapis, A., Xenos, M.: The physiological measurements as a critical indicator in users’ experience evaluation. In: Proceedings of the 17th Panhellenic Conference on Informatics. pp. 258–263. ACM, New York, NY, USA (2013).

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