Embracing Cognitive Aspects in Web Personalization Environments – The AdaptiveWeb Architecture. - Panagiotis Germanakos; Nikos Tsianos; Zacharias Lekkas; Constantinos Mourlas; Marios Belk; George Samaras (ICALT, 2007)

A Semantic Approach of an Adaptive and Personalized Web-Based Learning Content-The Case of AdaptiveWeb. - Panagiotis Germanakos; Nikos Tsianos; Zacharias Lekkas; Constantinos Mourlas; Marios Belk; George Samaras (SMAP, 2007)

Towards a Human Factors Ontology for Computer-Mediated Systems*. - Panagiotis Germanakos; Marios Belk; Nikos Tsianos; Zacharias Lekkas; Constantinos Mourlas; George Samaras (OTM Workshops, 2008)

Intelligent Authoring Tools for Enhancing Mass Customization of e-Services - The smarTag Framework. - Panagiotis Germanakos; Nikos Tsianos; Zacharias Lekkas; Costas Mourlas; Marios Belk; George Samaras (ICEIS (5), 2009)

Human Factors As A Parameter For Improving Interface Usability And User Satisfaction. - Panagiotis Germanakos; Nikos Tsianos; Zacharias Lekkas; Marios Belk; Constantinos Mourlas; George Samaras (MCIS, 2009)

Working Memory Differences in E-Learning Environments: Optimization of Learners' Performance through Personalization. - Nikos Tsianos; Panagiotis Germanakos; Zacharias Lekkas; Costas Mourlas; George Samaras; Marios Belk (UMAP, 2009)

Proposing Web Design Enhancements Based on Specific Cognitive Factors: An Empirical Evaluation. - Panagiotis Germanakos; Nikos Tsianos; Zacharias Lekkas; Constantinos Mourlas; Marios Belk; George Samaras (Web Intelligence, 2009)

Adapting mLearning Environments on Learners' Cognitive Styles and Visual Working Memory Span. - Panagiotis Germanakos; Marios Belk; Zacharias Lekkas; Constantinos Mourlas; Georgia Kleanthous; George Samaras (MCIS, 2010)

An ontological cognitive user model for adapting generic Web structures. - Panagiotis Germanakos; Marios Belk; Nikos Tsianos; Zacharias Lekkas; Constantinos Mourlas; George Samaras (SMAP, 2010)

Do cognitive styles of users affect preference and performance related to CAPTCHA challenges? - Marios Belk; Christos Fidas; Panagiotis Germanakos; George Samaras (CHI Extended Abstracts, 2012)

Employing virtual worlds for HCI education: a problem-based learning approach. - Panagiotis Zaharias; Marios Belk; George Samaras (CHI Extended Abstracts, 2012)

USN: An Optimization Framework for User-centric Social Networks. - Panayiotis Andreou; Panagiotis Germanakos; Andreas Konstantinidis 002; Dimosthenis Georgiadis; Marios Belk; George Samaras (CSE, 2012)

Investigating the Relation between Users' Cognitive Style and Web Navigation Behavior with K-means Clustering. - Marios Belk; Efi Papatheocharous; Panagiotis Germanakos; George Samaras (ER Workshops, 2012)

Data-Driven User Profiling to Support Web Adaptation through Cognitive Styles and Navigation Behavior. - Panagiotis Germanakos; Efi Papatheocharous; Marios Belk; George Samaras (AIAI (2), 2012)

Proposing a Fuzzy Adaptation Mechanism Based on Cognitive Factors of Users for Web Personalization. - Efi Papatheocharous; Marios Belk; Panagiotis Germanakos; George Samaras (AIAI (2), 2012)

On Modelling Cognitive Styles of Users in Adaptive Interactive Systems using Artificial Neural Networks. - Efi Papatheocharous; Marios Belk; Panagiotis Germanakos; George Samaras (IJCCI, 2012)

Supporting Adaptive Interactive Systems with Semantic Markups and Human Factors. - Marios Belk; Panagiotis Germanakos; Efi Papatheocharous; Marios Constantinides; George Samaras (SMAP, 2012)

Towards User-centric Social Networks. - Panayiotis Andreou; Panagiotis Germanakos; Andreas Konstantinidis 002; Dimosthenis Georgiadis; Marios Belk; George Samaras (WEBIST, 2012)

Studying the Effect of Human Cognition on Text and Image Recognition CAPTCHA Mechanisms. - Marios Belk; Panagiotis Germanakos; Christos Fidas; George Spanoudis; George Samaras (HCI (27), 2013)

Security for Diversity: Studying the Effects of Verbal and Imagery Processes on User Authentication Mechanisms. - Marios Belk; Christos Fidas; Panagiotis Germanakos; George Samaras (INTERACT (3), 2013)

Towards the Personalization of CAPTCHA Mechanisms Based on Individual Differences in Cognitive Processing. - Marios Belk; Panagiotis Germanakos; Christos Fidas; Andreas Holzinger; George Samaras (SouthCHI, 2013)

Studying the Effect of Human Cognition on User Authentication Tasks. - Marios Belk; Panagiotis Germanakos; Christos Fidas; George Samaras (UMAP, 2013)

Modeling users on the World Wide Web based on cognitive factors, navigation behavior and clustering techniques. - Marios Belk; Efi Papatheocharous; Panagiotis Germanakos; George Samaras (J. Syst. Softw., 2013)

An Individual Differences Approach in Designing Ontologies for Efficient Personalization. - Nikos Tsianos; Panagiotis Germanakos; Marios Belk; Zacharias Lekkas; George Samaras; Costas Mourlas (Semantic Hyper/Multimedia Adaptation, 2013)

On Supporting Security and Privacy-Preserving Interaction through Adaptive Usable Security. - Marios Belk; Christos Fidas; Panagiotis Germanakos; George Samaras (HCI (24), 2014)

An Individual Differences Approach in Adaptive Waving of User Checkout Process in Retail eCommerce. - Marios Belk; Panagiotis Germanakos; Stavros Asimakopoulos; Panayiotis Andreou; Constantinos Mourlas; George Spanoudis; George Samaras (HCI (18), 2014)

Personalised continuous software engineering. - Efi Papatheocharous; Marios Belk; Jaana Nyfjord; Panagiotis Germanakos; George Samaras (RCoSE, 2014)

A Personalization Method Based on Human Factors for Improving Usability of User Authentication Tasks. - Marios Belk; Panagiotis Germanakos; Christos Fidas; George Samaras (UMAP, 2014)

Towards Implicit User Modeling Based on Artificial Intelligence, Cognitive Styles and Web Interaction Data. - Efi Papatheocharous; Marios Belk; Panagiotis Germanakos; George Samaras (Int. J. Artif. Intell. Tools, 2014)

Integrating Human Factors and Semantic Mark-ups in Adaptive Interactive Systems. - Marios Belk; Panagiotis Germanakos; Efi Papatheocharous; Panayiotis Andreou; George Samaras (Open J. Web Technol., 2014)

CogniMouse: On Detecting Users' Task Completion Difficulty through Computer Mouse Interaction. - Marios Belk; David Portugal; Eleni Christodoulou; George Samaras (CHI Extended Abstracts, 2015)

iHIP: Towards a User Centric Individual Human Interaction Proof Framework. - Christos Fidas; Heinrich Hussmann; Marios Belk; George Samaras (CHI Extended Abstracts, 2015)

CogniWin - A Virtual Assistance System for Older Adults at Work. - Sten Hanke; Hugo Meinedo; David Portugal; Marios Belk; João Quintas; Eleni Christodoulou; Miroslav Sili; Miguel Sales Dias; George Samaras (HCI (26), 2015)

A Human Cognitive Processing Perspective in Designing E-Commerce Checkout Processes. - Marios Belk; Panagiotis Germanakos; Argyris Constantinides; George Samaras (INTERACT (1), 2015)

The PersonaCheck System for Personalizing M-Commerce Checkout Processes. - Argyris Constantinides; Marios Belk; Panagiotis Germanakos; George Samaras (MDM (1), 2015)

The PersonaWeb System: Personalizing E-Commerce Environments based on Human Factors. - Panagiotis Germanakos; Marios Belk; Argyris Constantinides; George Samaras (UMAP Workshops, 2015)

Towards a Human-Centered E-Commerce Personalization Framework. - Marios Belk; Panagiotis Germanakos; Panayiotis Andreou; George Samaras (WI-IAT (1), 2015)

Do human cognitive differences in information processing affect preference and performance of CAPTCHA? - Marios Belk; Christos Fidas; Panagiotis Germanakos; George Samaras (Int. J. Hum. Comput. Stud., 2015)

A Personalized User Authentication Approach Based on Individual Differences in Information Processing. - Marios Belk; Christos Fidas; Panagiotis Germanakos; George Samaras (Interact. Comput., 2015)

Identification of an Individual's Frustration in the Work Environment Through a Multi-sensor Computer Mouse. - David Portugal; Marios Belk; João Quintas; Eleni Christodoulou; George Samaras (HCI (25), 2016)

Security and Usability in Knowledge-based User Authentication: A Review. - Christina P. Katsini; Marios Belk; Christos Fidas; Nikolaos M. Avouris; George Samaras (PCI, 2016)

A Computer Mouse for Stress Identification of Older Adults at Work. - Marios Belk; David Portugal; Panagiotis Germanakos; João Quintas; Eleni Christodoulou; George Samaras (UMAP (Extended Proceedings), 2016)

CogniWin: An Integrated Framework to Support Older Adults at Work. - David Portugal; Miguel Sales Dias; Eleni Christodoulou; Marios Belk; João Quintas; Pedro Nunes; George Samaras; Sten Hanke; Markus Müllner-Rieder; Christoph Glauser; Mehdi Snene; Dimitri Konstantas (UMAP (Extended Proceedings), 2016)

Human-Centred Web Adaptation and Personalization - From Theory to Practice - Panagiotis Germanakos; Marios Belk (Springer, 2016)

Influences of Users' Cognitive Strategies on Graphical Password Composition. - Christina P. Katsini; Christos Fidas; Marios Belk; Nikolaos M. Avouris; George Samaras (CHI Extended Abstracts, 2017)

Effects of Human Cognitive Differences on Interaction and Visual Behavior in Graphical User Authentication. - Marios Belk; Christos Fidas; Christina P. Katsini; Nikolaos M. Avouris; George Samaras (INTERACT (3), 2017)

Using Eye Gaze Data and Visual Activities to Infer Human Cognitive Styles: Method and Feasibility Studies. - George E. Raptis; Christina P. Katsini; Marios Belk; Christos Fidas; George Samaras; Nikolaos M. Avouris (UMAP, 2017)

Sweet-spotting security and usability for intelligent graphical authentication mechanisms. - Marios Belk; Andreas Pamboris; Christos Fidas; Christina P. Katsini; Nikolaos M. Avouris; George Samaras (WI, 2017)

The interplay between humans, technology and user authentication: A cognitive processing perspective. - Marios Belk; Christos Fidas; Panagiotis Germanakos; George Samaras (Comput. Hum. Behav., 2017)

Influences of Human Cognition and Visual Behavior on Password Strength during Picture Password Composition. - Christina P. Katsini; Christos Fidas; George E. Raptis; Marios Belk; George Samaras; Nikolaos M. Avouris (CHI, 2018)

Eye Gaze-driven Prediction of Cognitive Differences during Graphical Password Composition. - Christina P. Katsini; Christos Fidas; George E. Raptis; Marios Belk; George Samaras; Nikolaos M. Avouris (IUI, 2018)

On sociocultural-centered graphical passwords: an initial framework. - Argyris Constantinides; Christos Fidas; Marios Belk; George Samaras (MobileHCI Adjunct, 2018)

On Cultural-centered Graphical Passwords: Leveraging on Users' Cultural Experiences for Improving Password Memorability. - Argyris Constantinides; Marios Belk; Christos Fidas; George Samaras (UMAP, 2018)

SocialRobot: Towards a Personalized Elderly Care Mobile Robot. - David Portugal; Luís Santos 001; Pedro Trindade; Christophoros Christophorou; Panayiotis Andreou; Dimosthenis Georgiadis; Marios Belk; João Freire; Paulo Alvito; George Samaras; Eleni Christodoulou; Jorge Dias 001 (CoRR, 2018)

The SERUMS tool-chain: Ensuring Security and Privacy of Medical Data in Smart Patient-Centric Healthcare Systems. - Vladimir Janjic; Michael Vinov; Thomas Given-Wilson; Axel Legay; Euan Blackledge; R. Arredouani; George Stylianou; Wanting Huang; Juliana Küster Filipe Bowles; Andreas Francois Vermeulen; Agastya Silvina; Marios Belk; et al. (IEEE BigData, 2019)

FlexPass: Symbiosis of Seamless User Authentication Schemes in IoT. - Marios Belk; Christos Fidas; Andreas Pitsillides (CHI Extended Abstracts, 2019)

Picture Passwords in Mixed Reality: Implementation and Evaluation. - Georgios M. Hadjidemetriou; Marios Belk; Christos Fidas; Andreas Pitsillides (CHI Extended Abstracts, 2019)

Influences of Mixed Reality and Human Cognition on Picture Passwords: An Eye Tracking Study. - Christos Fidas; Marios Belk; Georgios M. Hadjidemetriou; Andreas Pitsillides (INTERACT (2), 2019)

Adaptive and Personalized Privacy and Security (APPS 2019): Workshop Chairs' Welcome and Organization. - Marios Belk; Christos Fidas; Elias Athanasopoulos; Andreas Pitsillides (UMAP (Adjunct Publication), 2019)

On the Accuracy of Eye Gaze-driven Classifiers for Predicting Image Content Familiarity in Graphical Passwords. - Argyris Constantinides; Marios Belk; Christos Fidas; Andreas Pitsillides (UMAP, 2019)

On the Personalization of Image Content in Graphical Passwords based on Users' Sociocultural Experiences: New Challenges and Opportunities. - Argyris Constantinides; Christos Fidas; Marios Belk; Andreas Pitsillides (UMAP (Adjunct Publication), 2019)

Security And Privacy Of Medical Data: Challenges For Next-Generation Patient-Centric Healthcare Systems. - Vladimir Janjic; Juliana Bowles; Marios Belk; Andreas Pitsillides (UMAP (Adjunct Publication), 2019)

"I Recall this Picture": Understanding Picture Password Selections based on Users' Sociocultural Experiences. - Argyris Constantinides; Christos Fidas; Marios Belk; Andreas Pitsillides (WI, 2019)

A Human-Cognitive Perspective of Users' Password Choices in Recognition-Based Graphical Authentication. - Christina P. Katsini; Christos Fidas; Marios Belk; George Samaras; Nikolaos M. Avouris (Int. J. Hum. Comput. Interact., 2019)

An eye gaze-driven metric for estimating the strength of graphical passwords based on image hotspots. - Argyris Constantinides; Marios Belk; Christos Fidas; Andreas Pitsillides (IUI, 2020)

CogniKit: An Extensible Tool for Human Cognitive Modeling based on Eye Gaze Analysis. - Andreas Costi; Marios Belk; Christos Fidas; Argyris Constantinides; Andreas Pitsillides (IUI Companion, 2020)

Adaptive and Personalized Privacy and Security (APPS 2020): Workshop Chairs' Welcome. - Marios Belk; Christos Fidas; Juliana Bowles; Elias Athanasopoulos; Andreas Pitsillides (UMAP (Adjunct Publication), 2020)

APPS 2020: Second International Workshop on Adaptive and Personalized Privacy and Security. - Marios Belk; Christos Fidas; Juliana Bowles; Elias Athanasopoulos; Andreas Pitsillides (UMAP, 2020)

Design and Development of a Patient-centric User Authentication System. - Argyris Constantinides; Marios Belk; Christos Fidas; Andreas Pitsillides (UMAP (Adjunct Publication), 2020)

A Cross-cultural Perspective for Personalizing Picture Passwords. - Argyris Constantinides; Anna Maria Pietron; Marios Belk; Christos Fidas; Ting Han 002; Andreas Pitsillides (UMAP, 2020)

Eye Gaze and Interaction Differences of Holistic Versus Analytic Users in Image-Recognition Human Interaction Proof Schemes. - Pantelitsa Leonidou; Argyris Constantinides; Marios Belk; Christos Fidas; Andreas Pitsillides (HCI (27), 2021)

An Empirical Study of Picture Password Composition on Smartwatches. - Marios Belk; Christos Fidas; Eleni Katsi; Argyris Constantinides; Andreas Pitsillides (INTERACT (4), 2021)

Understanding Insider Attacks in Personalized Picture Password Schemes. - Argyris Constantinides; Marios Belk; Christos Fidas; Andreas Pitsillides (INTERACT (4), 2021)

A Field Dependence-Independence Perspective on Eye Gaze Behavior within Affective Activities. - Christos Fidas; Marios Belk; Christodoulos Constantinides; Argyris Constantinides; Andreas Pitsillides (INTERACT (1), 2021)

APPS 2021: Third International Workshop on Adaptive and Personalized Privacy and Security. - Argyris Constantinides; Marios Belk; Christos Fidas; Juliana Bowles; Andreas Pitsillides (UMAP (Adjunct Publication), 2021)

A Comparative Study among Different Computer Vision Algorithms for Assisting Users in Picture Password Composition. - Christodoulos Constantinides; Argyris Constantinides; Marios Belk; Christos Fidas; Andreas Pitsillides (UMAP (Adjunct Publication), 2021)

Privacy-preserving Biometric-driven Data for Student Identity Management: Challenges and Approaches. - Christos Fidas; Marios Belk; David Portugal; Andreas Pitsillides (UMAP (Adjunct Publication), 2021)

Applying Benford's Law as an Efficient and Low-cost Solution for Verifying the Authenticity of Users' Video Streams in Learning Management Systems. - Argyris Constantinides; Christodoulos Constantinides; Marios Belk; Christos Fidas; Andreas Pitsillides (WI/IAT, 2021)

From hot-spots towards experience-spots: Leveraging on users' sociocultural experiences to enhance security in cued-recall graphical authentication. - Argyris Constantinides; Christos Fidas; Marios Belk; Anna Maria Pietron; Ting Han 002; Andreas Pitsillides (Int. J. Hum. Comput. Stud., 2021)

Evaluating a Smart Healthcare System Design Through Participatory Approach. - Thais Webber; Juliana Bowles; Argyris Constantinides; Marios Belk; Emma Morley (ICIMTH, 2022)

APPS 2022: Fourth International Workshop on Adaptive and Personalized Privacy and Security. - Argyris Constantinides; Marios Belk; Christos Fidas; Juliana Bowles; Andreas Pitsillides (UMAP (Adjunct Publication), 2022)

TRUSTID: Intelligent and Continuous Online Student Identity Management in Higher Education. - Argyris Constantinides; José N. Faria; Taoufik Sousak; Pedro Martins 004; David Portugal; Marios Belk; Andreas Pitsillides; Christos Fidas (UMAP (Adjunct Publication), 2023)

Image-based Face Verification for Student Identity Management - the TRUSTID Case Study. - José Nuno Faria; David Portugal; Pedro Martins 004; Marios Belk; Argyris Constantinides; Andreas Pitsillides; Christos Fidas (UMAP (Adjunct Publication), 2023)

Security and Usability of a Personalized User Authentication Paradigm: Insights from a Longitudinal Study with Three Healthcare Organizations. - Argyris Constantinides; Marios Belk; Christos Fidas; Roy Beumers; David Vidal; Wanting Huang; Juliana Bowles; Thais Webber; Agastya Silvina; Andreas Pitsillides (ACM Trans. Comput. Heal., 2023)

Continuous user identification in distance learning: a recent technology perspective. - David Portugal; José N. Faria; Marios Belk; Pedro Martins 004; Argyris Constantinides; Anna Maria Pietron; Andreas Pitsillides; Nikolaos M. Avouris; Christos A. Fidas (Smart Learn. Environ., 2023)

CulturAI: Exploring Mixed Reality Art Exhibitions with Large Language Models for Personalized Immersive Experiences. - Nicolas Constantinides; Argyris Constantinides; Dimitrios Koukopoulos; Christos Fidas; Marios Belk (UMAP (Adjunct Publication), 2024)

CulturAI: Advancing Mixed Reality Art Experiences with Large Language Models. - Dimitrios Koukopoulos; Christos A. Fidas; Marios Belk (ERCIM News, 2025)