Welcome


Adopt a Loggerhead sea turtle

I am an Assistant Professor at the Electrical and Computer Engineering Department, University of Patras. I received a PhD and BSc from the same department. My research is related with the design and evaluation of information systems, with emphasis on usable security and personalization.

I have published papers in prestigious scientific venues, which received awards, and (co-) supervised several Ph.D. students. I have extensive professional experience as a principal investigator in several EU-funded and National research projects. I am fluent in German, English and Greek (native).

Email: fidas AT upatras.gr :: LinkedIn Profile: https://www.linkedin.com/in/fidas
Find me also at
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Highlights

[Workshop at ACM UMAP 2021 - January 2021] I am looking forward to running the 3rd edition of our workshop APPS 2021 - Adaptive and Personalized Privacy and Security, in conjunction with ACM UMAP 2021. Our special focus in 2021 will be on challenges and opportunities related to the Covid-19 outbreak on ensuring security and privacy of sensitive data and secure user interactions in online systems such as challenges for online distance learning, the need for touchless authentication, e-Government, e-Commerce, etc.

[New Publication - January 2021] Our paper entitled "From hot-spots towards experience-spots: Leveraging on users’ sociocultural experiences to enhance security in cued-recall graphical authentication" has been accepted at the International Journal of Human-Computer Studies.

[New Position - November 2020] I am thankful for spending the last years at the Department of Cutlural Heritage Management and New Technologies of the University of Patras. Many thanks to all my colleagues and supporting staff for a fruitful and joyful collaboration. I am very happy to join the Electrical and Computer Engineering Department of the University of Patras. I look forward to work with my new colleagues and students.

[Guest Editor of Special Issue - November 2020] I am the Guest Editor, together with Dr. Stella Sylaiou and Dr. George Pavlidis, of the Special Issue "Mixed Reality in Culture and Heritage" at the Heritage Journal. Please download the Call for Papers (.pdf)

[Best Paper Award - October 2020] We received the prestigious UMUAI James Chen award for best paper of 2019, for our paper entitled "A cognition-centered personalization framework for cultural heritage content". The User Modeling and User Adapted Interaction (UMUAI) James Chen Award is bestowed annually to the author(s) of the best paper of the year. The award has been donated by the Chen family in commemoration of James R. Chen.

[New Publication - March 2020] Our paper related to personalizing the user authentication process of information systems based on users' cross-cultural differences has been accepted at the ACM User Modeling, Adaptation and Personalization (UMAP 2020) papers' main program (23% acceptance rate). The work has been conducted in collaboration with the Shanghai Jiao Tong University.

[New Project - December 2019] I am enchanted that our project proposal "Development and production of augmented and virtual reality applications supporting narrative tours at the Tomato Industrial Museum "D. Nomikos" has been included for funding within the RESEARCH - CREATE - INNOVATE call. The proposal has been rated among the first 200 out of 2100 submissions (acceptance rate 10%).
The project proposes the production, presentation and promotion of a versatile cultural product that falls within the general context of the Museum's modern operation as cultural industry, thus linking academic research and innovation with entrepreneurship.

[New Publication - December 2019] Our paper related to improving the estimation of graphical password strength based on the interplay between image content familiarity and gaze-behaviour on image hotspots has been accepted at the ACM Intelligent User Interfaces (IUI 2020) papers' main program (16% acceptance rate).

[New Publication - November 2019] New paper accepted at the IEEE BigData 2019 conference, entitled "The SERUMS tool-chain: Ensuring Security and Privacy of Medical Data in Smart Patient-Centric Healthcare Systems".

[view more]

Patents

  • German Patent & Trade Mark Office (Deutsches Patent- und Markenamt): Method and apparatus for flexible user authentication based on individual human cognitive characteristics (Methode und vorrichtung zur flexiblen benutzerauthentifizierung basierend auf individuellen menschlichen kognitiven eigenschaften) – patent pending
  • Greek Industrial Property Organisation (Οργανισμός Βιομηχανικής Ιδιοκτησίας): Methods and tools to support and monitor in real time visitors of the World Wide Web (N. Patent No. 1004805.OVI, INT. CL G06F 17/60, g06f 15/163)

Honors and Awards

  • UMUAI James Chen Award for Best Paper of 2019 (November 2020)
    Research paper entitled "A Cognition-centered Personalization Framework for Cultural Heritage Content"
  • Seal of Excellence - Horizon 2020 Marie Skłodowska-Curie actions call H2020-MSCA-IF-2016
    For a high-quality project proposal in a highly competitive evaluation process, namely CogniPass – Cognition-based Personalised Authentication SchemeS [Seal of Excellence]
  • Best Paper Nomination Award and Honourable Mention at UMAP 2014 Conference (July 2014)
    Research paper entitled "A Personalisation Method based on Human Factors for Improving Usability of User Authentication Tasks"
  • Best Paper Award at SouthCHI 2013 Conference (July 2013)
    Research paper entitled "Towards the Personalization of CAPTCHA Mechanisms based on Individual Differences in Cognitive Processing"

Publications

Journals (Selected Publications)
Elsevier IJHCS
Constantinides, A., Fidas, C., Belk, M., Pietron, A., Han, T., Pitsillides, A. (2021). From hot-spots towards experience-spots: Leveraging on users’ sociocultural experiences to enhance security in cued-recall graphical authentication, International Journal of Human-Computer Studies - Impact Factor: 3.16, Elsevier (to appear)
Springer UMUAI
Raptis, G., Fidas, C., Katsini, C., Avouris, N. (2019). A cognition-centered personalization framework for cultural heritage content, User Modeling and User-Adapted Interaction (UMUAI). The Journal of Personalization Research - Impact Factor: 4.68, 29(1), 9-65, Springer, James Chen Award for best paper of 2019 [https://doi.org/10.1007/s11257-019-09226-7]
Elsevier IJHCS
Raptis, G., Fidas, C.A., Avouris, N. (2018). Effects of mixed-reality on players' behaviour and immersion in a cultural tourism game: A cognitive processing perspective, International Journal of Human-Computer Studies - Impact Factor: 3.16, Elsevier, 69-79 [https://doi.org/10.1016/j.ijhcs.2018.02.003]
Elsevier CHB
Belk M., Fidas C., Germanakos P., & Samaras G. (2017) The interplay between humans, technology and user authentication: a cognitive processing perspective, Computers in Human Behavior - Impact Factor: 5, 76, 184-200, Elsevier [https://doi.org/10.1016/j.chb.2017.06.042]
Elsevier IJHCS
Belk M., Fidas C., Germanakos P., & Samaras G. (2015) Do human cognitive differences in information processing affect preference and performance of captcha?, International Journal of Human - Computer Studies - Impact Factor: 3.16, 84, 1-18, Elsevier [http://dx.doi.org/10.1016/j.ijhcs.2015.07.002]
Oxford Uni. Press
Belk M., Fidas C., Germanakos P., & Samaras G. (2015) A personalized user authentication approach based on individual differences in information processing, Interacting with Computers Impact Factor: 1.03, 27(6), Oxford University Press [http://dx.doi.org/10.1016/j.ijhcs.2015.07.002]
Elsevier Comp. Ed.
Fidas, C.A., Komis, V., Tzanavaris, S., Avouris, N. (2005). Heterogeneity of learning material in synchronous computer-supported collaborative modelling. Computers and Education - Impact Factor: 5.29, 44 (2), 135-154, Elsevier [http://dx.doi.org/10.1016/j.compedu.2004.02.001]
Conferences (Selected Publications)
ACM UMAP 2020
Constantinides, A., Pietron, A., Belk, M., Fidas, C., Han, T., Pitsillides, A. (2020). A cross-cultural perspective for personalizing picture passwords, ACM SIGCHI User Modeling, Adaptation and Personalization (UMAP 2020), 43-52, ACM Press [https://doi.org/10.1145/3340631.3394859]
ACM IUI 2020
Constantinides, A., Belk, M., Fidas, C., Pitsillides, A. (2020). An eye gaze-driven metric for estimating the strength of graphical passwords based on image hotspots. ACM SIGCHI Intelligent User Interfaces (IUI 2020), ACM Press, 33-37 [https://doi.org/10.1145/3377325.3377537]
ACM CHI 2018
Katsini, C., Fidas, C., Raptis, G., Belk, M., Samaras, G., & Avouris, N. (2018). Influences of human cognition and visual behavior on password security during picture password composition. ACM SIGCHI Human Factors in Computing Systems (CHI 2018), ACM Press, paper 87 [https://doi.org/10.1145/3173574.3173661]
ACM IUI 2018
Katsini, C., Fidas, C., Raptis, G., Belk, M., Samaras, G., Avouris, N. (2018). Eye gaze-driven prediction of cognitive differences during graphical password composition. ACM SIGCHI Intelligent User Interfaces (IUI 2018), ACM Press, 147-152 [https://doi.org/10.1145/3172944.3172996]
ACM UMAP 2017
Raptis, G., Katsini, C., Belk, M., Fidas, C., Samaras, G., Avouris, N. (2017). Using eye gaze data and visual activities to infer human cognitive styles: method and feasibility studies, ACM SIGCHI User Modeling, Adaptation and Personalization (UMAP 2017), ACM Press, 164-173 [https://doi.org/10.1145/3079628.3079690]
ACM CHI Play 2016
Raptis, G., Fidas, C., Avouris, N. (2016). Do field dependence-independence differences of game players affect performance and behaviour in cultural heritage games?, ACM SIGCHI Computer-Human Interaction in Play (CHI PLAY 2016), ACM Press, 38-43 [https://doi.org/10.1145/2967934.2968107]
ACM CHI 2011
Fidas, C.A., Voyiatzis, A.G., Avouris, N.M. (2011). On the necessity of user-friendly captcha. ACM SIGCHI Human Factors in Computing Systems (CHI 2011), ACM Press, 2623-2626 [http://dx.doi.org/10.1145/1978942.1979325]

Projects

I have worked as a project manager, user experience expert and information systems architect in numerous EU-funded, National and industrial research projects like:

  • Research-Create-Innovate: D. Nomikos: Development and production of augmented and virtual reality applications supporting narrative tours at the Tomato Industrial Museum (2021-2023, Principal Investigator)
  • H2020-SERUMS: Securing Medical Data in Smart Patient-Centric Healthcare Systems (2019-2021, WP5 - User Authentication and Trust) - http://serums-smartpatient.com/
  • FP7-CR-PLAY: Capture Reconstruct Play (2013-2016, WP5 Leader - Formative and Summative Evaluation) - http://www.cr-play.eu
  • FP7-SERIES: Seismic Engineering Research Infrastructures for European Synergies (2009-2013, Lead of Information Systems Architecture Design and Implementation) - http://www.series.upatras.gr
  • FP6-QALIBRA: Quality of life-integrated benefit and risk analysis web-based tool for assessing food safety and health benefits (2006-2010, Lead of Evaluation) - http://www.qalibra.eu
  • FP6 e-Ten-COMMODE: Collaborative modeling environment (2005-2006, Lead of Evaluation and Pilot Studies)
  • IST-MODELLINGSPACE: Space of ideas expression modeling and collaboration (2001-2004, Software Engineer)

Teaching

Assistant Professor (2021-) at the Department of Electrical and Computer Engineering, University of Patras

Assistant Professor (2016-2020), Tenure-track Lecturer (2013-2016) at the Department of Cultural Heritage and New Technologies, University of Patras

  • New Interactive Media (M.Sc.)
  • Human-Computer Interaction (B.Sc.)
  • Structural Programming (B.Sc.)
  • Visual Programming (B.Sc.)
  • Pervasive Computing and Cultural Heritage (B.Sc.)

Visiting Assistant Professor at the Department of Computer Science, University of Cyprus (2011-2013)

  • Human-Computer Interaction (B.Sc.)
  • Programming Priniciples for Engineers (B.Sc.)
  • Operating Systems (B.Sc.)
  • Introduction to Computer Science (B.Sc.)

Adjunct Lecturer at the University of Patras, University of Ioannina, Technical Institute of Patras (2004-2011)


Academic Service

Advising

Prospective Students

I am always happy to discuss with prospective students new research endeavors in the areas of Information Systems and Culture, Modelling Human Cognition in Interactive Systems, and Usable Security. If you are interested to discuss your research idea please don't hesitate to contact me at fidas AT upatras.gr

Suggested Topics for Ph.D.
  • AR and VR Effects on Human Cognition within Cultural Heritage Informatics
  • Investigating the Effects of Human Emotions in User Authentication
  • Adaptable User Authentication in Ubiquitous Computation Realms
Ph.D. Students (co-supervised)
  • Argyris Constantinides (with University of Cyprus): Leveraging on Users' Cultural Factors for Increasing Graphical Password Memorability and Security - Jan. 2018-
  • Christina Katsini: Methods and Techniques for Usable and Secure User Authentication in Natural User Interaction - Sept. 2016-
  • George Raptis: A Personalized Cultural Heritage Framework based on Human Cognitive Processing - Successfully defended July 2020
  • Marios Belk: Adaptive Usable Security: Personalising User Authentication and CAPTCHA based on Individual Differences in Cognitive Processing - Successfully defended December 2015

Scientific Community Service

Review Service in International Journals and Conferences

  • ACM Transactions on the Web
  • ΙEEE Transactions on Games
  • ΙΕΕΕ Transactions on Fuzzy Systems
  • IEEE Internet Computing Magazine
  • Behaviour & Information Technology, Elsevier
  • Journal of Network and Computer Applications, Elsevier
  • Industrial Marketing Management, Elsevier
  • Computers & Security , Elsevier
  • Energy Research & Social Science, Elsevier
  • International Journal of Human - Computer Studies, Elsevier
  • Information Technology & People, Emerald
  • Computers and Education, Elsevier
  • Interacting with Computers, Oxford
  • IBM Journal of Research and Development
  • ACM CHI - SIGCHI Conference on Human Factors in Computing Systems