Michalis Xenos, Professor, B.Eng, M.Sc., Ph.D.

Address: Software Quality Laboratory
School of Sciences and Technology
Hellenic Open University
Parodos Aristotelous 18, 26 335, Patra
Phone: 2610 367695
Fax: 2610 367112
E-mail: xenos{at}eap.gr

Professor Michalis Xenos received his B.Eng. and M.Sc. from the Department of Computer Engineering & Informatics, University of Patras (1991) and completed his Ph.D. dissertation at the same University (1996). From 1991 he has been holding teaching assistance positions and from 1996 teaching and research positions at the Departments of Computer Engineering & Informatics and Mathematics of the University of Patras. He has been member of the Research Academic Computer Technology Institute, Patras, Greece since 1989, Researcher and Director of Research Unit II (1998-2000). He has coordinated and teac educational units in Open University of Cyprus (2008-2012).

Michalis Xenos is a Tenured Professor in the Computer Science Department of the School of Science and Technology of the Hellenic Open University and Coordinator of Educational Units. He is the Director of the Computer Science Course and has served as Director of the Postgraduate Course of Computer Science (2009-2011). He is currently the Director of the Internal Assessment and Education Unit, Director of the Software Quality Research Group and Director of the Software Quality Laboratory. He has participated in over 40 research and development projects in the area of software engineering and educational technologies. His current research interests include, inter alia, Software Quality, Human Computer Interaction and Educational Technologies. He has authored or co-authored 8 books and over 150 papers in international journals and conferences, that have received over 1,000 citations (h-index=18). Dr. Xenos serves as a reviewer for numerous conferences and journals such as: Computers & Education, IEEE Transactions on Education, Information & Software Technologies.

 

Research Interests

Software Quality and in particular:

  • Software Metrics and Measurements
  • Software Quality Assessment
  • User Perceived Software Quality
    Distance Educational Technologies and in particular:
  • Tools for Distance Education
  • Usability Evaluation of Distance Educational Tools
    Information Hiding Techniques and in particular:
  • Digital Watermarking in Still Images
  • Quality Assessment of Watermarking Techniques

 

Projects

  • Project Representative of HOU for the project "Semi-Autonomous Vineyard Spraying Agricultural Robot (SAVSAR)"
  • Project Coordinator for the project EU Education and Culture DG – European Commission – Life Long Learning Project – KA3 Multilateral Projects, "HOME / Higher education Online: MOOCs the European way".
  • Project Coordinator for the project EU Education and Culture DG – European Commission – Life Long Learning Project – KA3 Multilateral Projects, "V-ALERT / Virtual World for Awareness and Learning on Information Security".
  • Project Coordinator for the project EU Education and Culture DG – European Commission – Life Long Learning Project – KA3 Multilateral Projects, "e-Hoop / Unified e-Hoop approach to learning differences".
  • Project Representative of HOU for the project "Agrirobot: The supportive role of robotic technology for sustainable agricultural development", Research Technological Development and Innovation 2009-2010 of the Cyprus Research Promotion Foundation.
  • Project Representative of HOU for the project Urbact II RUNUP " The role of Universities for Economic Development in Urban Poles".
  • Project Representative of HOU for the project EU Education and Culture DG – European Commission – Life Long Learning Project – ERASMUS Multilateral Projects, "Open Educational Innovation and Incubation".
  • Project Representative of HOU for the project EU Education and Culture DG – European Commission – Life Long Learning Project – KA4 Multilateral Projects, "E-XCELLENCE in a National, European and World perspective (NEXT)".
  • Project Representative of HOU for the project EU Education and Culture DG – European Commission – Life Long Learning Project – ERASMUS Virtual Campuses, "Innovative OER in European HE".
  • Project Coordinator for the project EU Framework Lifelong Learning Programme / Transversal Programme / Key Activity 3: ICT, "SimSafety – Flight Simulator".
  • Project Coordinator for the project EU Socrates/Lingua II, "LeVis – Learning Via Subtitling".
  • Researcher in the IP (Integrated project) "EleGI: European Learning GRID Infrastructure" 6th Framework Programme, Priority IST Technology-enhanced learning and access to cultural heritage, for the Hellenic Open University. The project is in progress.
  • Researcher in the project "EAGLE: Server for Hellenic language exercises in the Internet" Information Society 2002, Action Line 3.3.1 (e-learning), for the Hellenic Open University. The project is in progress.
  • Member of the Evaluation Committee of the project "Restructuring of the Informatics Course" for the Patras Technological Institute. The project is in progress.
  • Researcher in the project "HERACLITOS: Research Scholarships" EPEAEK, Action Line 2.2.2. The project is in progress.
  • Researcher in the project "Software Development for Safe Communications" for the Research Academic Computer Technology Institute. The project focused on Information Hiding and was developed for the Hellenic Ministry of the Interior. The project was successfully completed in 2004.
  • Scientific Coordinator of the project "Selection of Assessment Indices" of the Hellenic Open University. The project was successfully completed in 2004.
  • Vice Scientific Coordinator of the project "Restructuring of the Informatics Course" of the Hellenic Open University. The project is in progress.
  • Member of the Steering Committee of the project "Advanced Telematic Services of the Hellenic Open University" for the Hellenic Open University. The project was successfully completed in 2003.
  • Vice Scientific Coordinator of the project "Carrier Office" for the Hellenic Open University. The project is in progress.
  • Researcher in the project "AITHRA I" for the Research Academic Computer Technology Institute. The project focused on Information Hiding and was being developed for the Hellenic Ministry of the Interior. The project was successfully completed in 2003.
  • Scientific Coordinator of the project "Software Usability Network" for the Research Academic Computer Technology Institute. The project was successfully completed in 2001.
  • Scientific Coordinator of the project "Recording and Presentation of the Cultural Heritage of the Holy Monastery of Mega Spilaion" for the Research Academic Computer Technology Institute. The project was successfully completed in 2000.
  • Scientific Coordinator of the Research Unit 2 in the project "Telematics Center of West Greece, Epirus and Ionian Islands" for the Research Academic Computer Technology Institute. The project was successfully completed in 2001.
  • Project Manager and Vice Scientific Coordinator of the project "Translating Leimonario" for the Research Academic Computer Technology Institute. The project was successfully completed in 1999.
  • Engineer in the project "SCRIPT" under the framework STRIDE HELLAS for the Research Academic Computer Technology Institute. The project was successfully completed in 1999.
  • Engineer in the project "ARISE" under the framework EEC-ARISE Program for the Research Academic Computer Technology Institute as a subcontractor of INTRASOFT S.A. The project aimed at the reporting of the "state-of-the-art" in the area of software metrics. The project was successfully completed in 1994.
  • Engineer in the project "QUICHE (Quality Assurance of User Informatics for Child Health in Europe)" under the framework EEC-AIM Program for the Research Academic Computer Technology Institute. The project focused on research in quality issues for software used for child health. The project was completed in 1993.
  • Programmer and Engineer (starting from 1991) in the project "PYRAMID" under the framework EEC-ESPRIT II Program for the Research Academic Computer Technology Institute. The project focused on research in software quality. Specifically in software quality metrics. The project was successfully completed in 1993.

 

Publications

 Journals

  • Adamides G., Christou G., Katsanos C., Xenos M, Hadzilacos T. Usability guidelines for the design of robot teleoperation: a taxonomy, IEEE Transactions on Human-Machine Systems, doi: 10.1109/THMS.2014.2371048
  • Chatzidaki E., Liapis A., Tsironis A., Xenos M., Kostaras N., "Users' Emotional Experience using Different Modalities: A Comparative Study", International Journal of Web Engineering and Technology, Vol. 9, No. 2, pp. 148-163, 2014.
  • Vicky Maratou, Eleni Chatzidaki & Mixalis Xenos (2014): "Enhance learning on software project management through a role-play game in a virtual world",  Interactive Learning Environments, DOI: 10.1080/10494820.2014.937345 Published online: 14 Jul 2014.
  • Kostaras, Ν., Xenos, M., “Usability Evaluation of Augmented Reality Systems”, Intelligent Decision Technologies, IOS Press, Volume 6(2), pp.139-149, 2012. This email address is being protected from spambots. You need JavaScript enabled to view it.για περισσότερες πληροφορίες)
  • Xenos M., “The Framework for Innovation and Entrepreneurship in Higher Education in Greece – The Hellenic Open University Case”, Journal for the Systemic Innovation of Education (JSIE), Vol. 1, Issue 1, pp. 75-81, 2011. (pdf)
  • Tsolis D., Sioutas S., Xenos M., Styliaras G.,"Copyright and IPR Management for Cultural Heritage Digital Content in Peer to Peer Networks”, Journal of Cultural Heritage, Vol. 12, Issue 4, pp. 466-475, 2011. This email address is being protected from spambots. You need JavaScript enabled to view it.για περισσότερες πληροφορίες)
  • Soumplis A., Koulocheri E., Kostaras N., Karousos N., Xenos M., "Learning Management Systems and Learning 2.0", International Journal of Web-Based Learning and Teaching Technologies (IJWLTT), Volume 6, Issue 4, pp. 1-18, 2011. (pdf)
  • Patriarcheas K., Xenos M., "A comparative study in educational techniques by using combined environment via computer and mobile devices in asynchronous discussion forum", International Journal of Mobile Communications (accepted November 2011).
  • Kostaras, Ν., Xenos, M., "A Study on How Usability Flaws in GUI design Increase Mouse Movements and consequently may Affect Users' Health", Behaviour & Information Technology, Taylor & Francis, 30: 3, pp. 425-436, 2011. (This email address is being protected from spambots. You need JavaScript enabled to view it. for further info)
  • Stefani A., Xenos M., “Weight-Modeling of B2C System Quality”, Computer Standards & Interfaces Vol. 33, Issue 4, pp. 411-421, June 2011.
  • Kostaras, Ν., Xenos, M., "Evaluating usability in a distance digital systems laboratory class", IEEE Transactions on Education, vol. 54, no. 2, pp. 308-313, May 2011. (This email address is being protected from spambots. You need JavaScript enabled to view it. for further info)
  • Kotsiantis S., Patriarcheas K., Xenos M., "A combinational incremental ensemble of classifiers as a technique for predicting students' performance in distance education", Knowledge-Based Systems, Amsterdam, Netherlands, Vol. 23, Issue 6, pp. 529-535, 2010. (This email address is being protected from spambots. You need JavaScript enabled to view it. for further info)
  • Kostaras N., Stavrinoudis D., Sokoli S., Xenos M., "Combining Experimental and Inquiry Methods in software usability evaluation: the paradigm of LvS Educational Software", Journal of Systems and Information Technology, Vol. 12, No. 2, pp. 120-139, 2010. (pdf)
  • Vassiliadis B., Xenos M., Stefani A., "Enabling Enhanced Learning in an Open University Environment: a Grid-aware architecture", International Journal of Information and Communication Technology Education, Vol. 5, No. 3, pp. 59-73, July 2009. (pdf)
  • Patriarcheas K., Xenos M., "Modelling of distance education forum: Formal languages as interpretation methodology of messages in asynchronous text-based discussion", Computers & Education, Elsevier, Amsterdam, Netherlands, Vol. 52, Issue 2, pp. 438-448, 2009.(This email address is being protected from spambots. You need JavaScript enabled to view it. for further info)
  • Xenos M., Avouris N., Stavrinoudis D., Margaritis M., "Introduction of synchronous peer collaboration activities in a distance learning course", IEEE Transactions on Education Journal, Vol. 52, Issue 3, pp. 305-311, 2009.(pdf)
  • Stefani A., Xenos M., "Meta-metric Evaluation of E-Commerce-related Metrics", Journal of Electronic Notes in Theoretical Computer Science ENTCS, 233, pp. 59-72, 2009.(pdf)
  • Stavrinoudis D., Xenos M., "On Technological Issues Affecting Online Learners’ Behavior", Journal of Computational Methods in Sciences and Engineering, Special Issue: Intelligent Systems and Knowledge Management, Vol. 8, No. 3, pp. 183-194, 2008.
  • Xenos M., Tsiatsos T., Vassiliadis B., “Large Scale Deployment of Distance Education in Computer Science at the Hellenic Open University”, International Journal of Knowledge and Learning, Vol. 4, Issue 2/3, pp. 285-297, 2008.
  • Stefani A., Xenos M., "E-Commerce System Quality Assessment using a Model based on ISO 9126 and Belief Networks", Software Quality Journal, Vol. 16 (1), pp. 107-129, March 2008. (pre-print version available - pdf)
  • Xenos M. and Papadopoulos T., "Computer Aided Evaluation of Higher Education Tutors' Performance", Studies in Educational Evaluation Journal, Vol. 33 (2), pp. 175-196, June, 2007. (pre-print version available - pdf)
  • Stefani A., Vassiliadis B., Xenos M., "On the Quality Assessment of Advanced e-Learning Services", Journal of Interactive Technology and Smart Education, Vol. 3, Issue 3, pp. 237-250, August, 2006. (pre-print version available - pdf)
  • Hadzilacos T., Kalles D., Pierrakeas C., Xenos M., "On Small Data Sets revealing Big Differences", In "Advances in Artificial Intelligence", Antoniou G., Potamias G., Spyropoulos C., Plexousakis D. (Eds.), Springer, Lecture Notes in Computer Science, Volume 3955, pp. 512-515, 2006. (pre-print version available - pdf)
  • Stefani A., Vassiliadis B., Xenos M., "Behavioral patterns in hypermedia systems: a short study of e-commerce vs. e-learning practices", In "Adaptive and Personalized Semantic Web", Sirmakesis S. (Ed.), Springer, ISBN: 3-540-30605-6, pp. 57-64, 2006. (pre-print version available - pdf)
  • Drossos L., Vassiliadis B., Stefani A., Xenos M., Sakopoulos E., Tsakalidis A., "Introducing ICT in a traditional higher education environment: background, design and evaluation of a blended approach", International Journal of Information and Communications Technology Education (IJICTE), Vol.2, Issue 1, pp. 65-78, 2005. (pre-print version available - pdf)
  • Papadakis S., Xenos M., Mitsou E., "Experiences and technical issues from the delivery of computer-based learning materials in the Hellenic Open University", Open Education: the Journal for Open and Distance Education and Educational Technology, Vol. 1, No. 2, pp. 12-28, 2005. (pre-print version available - pdf)
  • Xenos M., Hantzara K., Mitsou E., Kostopoulos I., "A Model for the Assessment of Watermark Quality with regard to Fidelity", Journal of Visual Communication and Image Representation, Vol. 16 (6), pp. 621-642, 2005. (pre-print version available - pdf)
  • Stavrinoudis D., Xenos M., Peppas P. and Christodoulakis D., "Early estimation of users' perception of Software Quality", Software Quality Journal, Springer Science + Business Media, Vol 13, Issue 2, pp.155-175, 2005. (pre-print version available - pdf)
  • Pierrakeas C., Xenos M., Panagiotakopoulos C. and Vergidis D., "A comparative study of dropout rates and causes for two different distance education courses", The International Review of Research in ODL Journal, ISSN 1492-3831, Vol 5 (2), July, 2004. (click here to download paper from IRRODL Journal)
  • Hadzilacos T., Kalles D., Papadakis S., Xenos M. (equal authorship is implied), "Productionizing of Streaming Educational Material", European Journal of Open and Distance Learning, ISSN 1027-5207, 2004. (pre-print version available - pdf)
  • Xenos M., Dermitzioti E., Pierrakeas C., "Assessing the Quality of Web Sites Used in Higher Open Distance Education Courses", Education, Communication & Information, Routledge, Vol 4 (2/3), pp. 237-253, 2004. (pre-print version available - pdf)
  • Xenos M., "Prediction and Assessment of Student Behaviour in Open and Distance Education in Computers using Bayesian Networks", International Journal of Computers & Education, Vol. 43 (4), pp. 345-359, 2003. (pre-print version available - pdf)
  • Pierrakeas C., Xenos M., Pintelas P., "Evaluating and Improving Educational Material and Tutoring Aspects of Distance Learning Systems", International Journal Studies in Educational Evaluation, Vol. 29 (4), pp. 335-349, 2003. (pre-print version available - pdf)
  • Armeni S., Christodoulakis D., Kostopoulos I., Kountrias C., Stamatiou Y., Xenos M. (equal authorship is implied), "An Information Hiding Method based on Computational Intractable Problems", Vol. 2563 Advances in Informatics, Manolopoulos Y., Evripidou S., Kakas A., (Eds.) Springer Verlag, ISSN 0302-9743, pp. 262-278, 2003. Selected (31 out of 104) and revised papers from 8th PCI 2001. (pre-print version available - pdf)
  • Xenos M., Pierrakeas C., Pintelas P., "A Survey on Student Dropout Rates and Dropout Causes Concerning the Students in the Course of Informatics of the Hellenic Open University", International Journal of Computers & Education, Vol. 39 (4), pp. 361-377, 2002. (pre-print version available - pdf)
  • Armeni S., Christodoulakis D., Kostopoulos I., Stamatiou Y., Xenos M. (equal authorship is implied), "Secure Information Hiding based on Computationally Intractable Problems", Journal of Discrete Mathematical Sciences & Cryptography, Vol. 6 (1), pp. 21-33, April 2003. (pre-print version available - pdf)
  • Xenos M. and Christodoulakis D., "Measuring Perceived Software Quality", Information and Software Technology Journal, Butterworth Publications, Vol. 39, Issue 6, pp. 417-424, June 1997. (pre-print version available - pdf)

Reviewed International Conferences

  • Liapis, A., Katsanos, C., Sotiropoulos, D., Xenos, M. and Karousos, N. 2015. Subjective Assessment of Stress in HCI: A Study of the Valence-Arousal Scale Using Skin Conductance. Proceedings of the 11th Biannual Conference on Italian SIGCHI Chapter (New York, NY, USA, 2015), 174–177, September. (link)
  • Ioannis Ntokas, Vicky Maratou, Michalis Xenos, Usability and Presence Evaluation of a 3D Virtual World Learning Environment Simulating Information Security Threats, CEEK 2015 7th Computer Science & Electronic Engineering Conference, Essex, UK, September 24-25, 2015.
  • Christos Mettouris, Vicky Maratou, Ioannis Ntokas, Michalis Xenos, George A. Papadopoulos, Educating people on real-life information security threats through 3d virtual world simulations, The Sixth International Conference on e-Learning (eLearning-2015), Belgrade, Serbia, 24-25 September 2015.
  • Andrina Granic, Vicky Maratou, Christos Mettouris, George A. PapadopoulosMichalis Xenos, Personalized Context-Aware Recommendations In 3D Virtual Learning Environments, INTE 2015 International Conference on New Horizons in Education, Barcelona, Spain, June 10-12, 2015, Published in TOJET - Turkish Online Journal of Educational Technology, Special Issue for INTE 2015, August 2015 (pdf).
  • Liapis A., Katsanos C., Sotiropoulos. D., Xenos M., and Karousos, N. 2015. Recognizing Emotions in Human Computer Interaction: Studying Stress Using Skin Conductance. In Human-Computer Interaction – INTERACT 2015. Julio Abascal, Simone Barbosa, Mirko Fetter, et al., eds. Pp. 255–262. Lecture Notes in Computer Science, 9296. Springer International Publishing, August 2015. (link)
  • Sideris, D., Tsironis, A., Xenos, M. (2015) ‘Comparative evaluation of MOOC technologies: The case of Hellenic Open University’, Proceedings of EDULEARN15 Conference 6th-8th July 2015, Barcelona, Spain, pp.5543–5552, ISBN: 978-84-606-8243-1) (link)
  • V. Maratou, M. Xenos, D. Vuckovic, A. Granic, A. Drecun, “Enhancing Learning on Information Security Using 3D Virtual World Learning Environment”, ICIST 2015 5th International Conference on Information Society and Technology, Kopaonik, Serbia, March, 8-11, 2015.
  • C. Mettouris, V. Maratou, D. Vuckovic, G. A. Papadopoulos, M. Xenos, “Information Security Awareness through a Virtual World: An end-user requirements analysis”, ICIST 2015 5th International, Conference on Information Society and Technology, Kopaonik, Serbia, March, 8-11, 2015.
  • Adamides G., Katsanos C., Christou G., Xenos M., Hadzilacos T., Edan Y. (2014). HRI interface usability evaluation of camera placement and view for a tele-operated agricultural sprayer robot. In International Conference of Agricultural Engineering, AgEng 2014, Zurich, Switzerland, 6-10 July, 2014.
  • Liapis A., Karousos N., Katsanos C., Xenos M. (2014). Evaluating user’s emotional experience in HCI: the PhysiOBS approach. In Proceedings of the 16th International Conference on Human-Computer Interaction, HCI International 2014, LNCS 8511, Part II (pp. 758-767), Crete, Greece: Springer Verlag, 22-27 June, 2014, doi: 10.1007/978-3-319-07230-2_72.
  • Adamides G., Christou G., Katsanos C., Kostaras N., Xenos M., Hadzilacos T. Edan Y. (2014). A reality-based interaction interface for an agricultural teleoperated robot sprayer. In Proceedings of the Second International Conference on Robotics, Associated High-Technologies and Equipment for Agriculture and Forestry, RHEA 2014 (pp. 367-376), Madrid, Spain, 21-23 May, 2014, ISBN 978-84-697-0248-2.
  • Adamides G., Katsanos C., Christou G., Xenos M., Papadavid G., Hadzilacos T. (2014). User interface considerations for telerobotics: the case of an agricultural robot sprayer. In Proceedings of the Second International Conference on Remote Sensing and Geoinformation of Environment, RSCY 2014, Vol. 9229, (pp. 92291W–92291W–8), Pafos Cyprus: SPIE Digital Library, 7-10 April , 2014, doi: 10.1117/12.20668318.
  • Adamides G., Christou G., Xenos M., Katsanos C., Kostaras N., Hadzilacos T., “Human-Robot Interaction in Agriculture: Usability Evaluation of three Input Devices for Spraying Grape Clusters”, Proceedings of EFITA2013 Sustainable Agriculture through ICT innovation, Torino Italy, June 23-27 2013.
  • Karousos N., Katsanos C., Tselios N., Xenos M., "Effortless tool-based evaluation of web form filling tasks using Keystroke Level Model and Fitts Law", In Extended Abstracts of the SIGCHI conference on Human factors in computing systems, CHI 2013 (pp. 1851-1856), Paris, France: ACM Press, April 27-May 2, 2013, doi: 10.1145/2468356.2468688. (pdf)
  • Koulocheri E., Xenos M., "Considering formal assessment in learning analytics within a PLE: the HOU2LEARN case", Proceedings of the 3rd International Conference on Learning Analytics and Knowledge (LAK '13), pp.28-32, Leuven, Belgium, 8-12 April 2013, ACM, New York, doi: 10.1145/2460296.2460304. (further information)
  • Patriarcheas K., Xenos M., "Fora for Distance Education: Another Way for Analysis of Discussions", Proceedings of the Second International Conference on Social Eco-Informatics (SOTICS 2012), IARIA Press, ISBN:978-1-61208-228-8, pp.70-75, Venice, Italy,21 - 26 October 2012. (pdf)
  • Xenos M., Mavroudi A., Karaiskakis D., Birbilis G., Glezos D., Zafeiropoulos D., “The development of an institutional repository service for a large distance education university”, Proceedings of the EADTU 25th Anniversary Conference 2012, The role of open and flexible education in European higher education systems for 2020: new models, new markets, new media, Pafos, Cyprus, 27-28 September 2012, pp. 327-337. (pdf)
  • Katsanos C., Karousos N., Tselios N., Xenos. M., Avouris N. (2013). KLM Form Analyzer: Automated evaluation of web form filling tasks using human performance models. In Proceedings of the 14th IFIP TC13 Conference in Human-Computer Interaction, Interact 2013, LNCS 8118, Part IΙ (pp. 530-537), Cape Town, South Africa: Springer Verlag, September 2-6, 2013, doi: 10.1007/978-3-642-40480-1_36
  • Koulocheri E., Chatzidaki E., Soumplis A., Xenos M., “A Usability Evaluation Approach in E-Learning Environments: The Case of IBM Lotus QUICKR”, International Conference The Future of Education, Florence, Italy, 7-8 June 2012, Proceedings Volume II, pp. 48-53. 
  • Chatzidaki E., Kostaras N., Xenos M., "Assessment of an educational online virtual game environment: the case of SimSafety", Proceedings of the 1st European Immersive Education Summit (iED 2011), Published, ISBN: 978-84-89315-66-2, pp.28-38, Universidad Carlos III de Madrid in Leganés, Madrid, Spain, 28-29 November 2011. (pdf)
  •  Karousos N., Papadakis S., Xenos M., Karacapilidis N., Tzagarakis M., “Development of argumentation skills via Learning Management Systems. Bringing Together Argumentation Support Tools and Learning Management Systems” Proceedings of the International Conference on Knowledge Engineering and Ontology Development (KEOD 2011), Paris, France, Oct 26-29, 2011, SciTePress, ISBN:978-989-8425-80-5, pp. 474-477.
  • Papaloukas S., Patriarcheas K., Xenos M., "Games' Usability and Learning – The Educational Videogame 'Be The Manager'", Proceedings of the 5th European Conference on Games Based Learning (ECGBL 2011), Academic Publishing International (API) Press, ISBN: 978-1-908272-18-8, pp.449-456, Athens, Greece, 20-21 October 2011.(pdf)
  • Patriarcheas K., Xenos M., "The formal languages as an approach to modelling distance education fora", Proceedings of the 9th International Conference of Numerical Analysis and Applied Mathematics, ICNAAM 2011, American Institute of Physics (AIP) Press, ISBN: 978-0-7354-0956-9, pp.817-820, Kassandra, Halkidiki, Greece, 19-25 September 2011. (pdf)
  • Patriarcheas K., Xenos M., "A comparative study of brainstorming and snowballing educational techniques in asynchronous distance education forum", Proceedings of the 6th Mediterranean Conference on Information Systems (MCIS 2011), AIS Press, Limassol, Cyprus, 3-5 September, 2011. (pdf)
  • Koulocheri E., Soumplis A., Kostaras N., Xenos M., "Usability Inspection of Informal Learning Environments: The HOU2LEARN Case", In "Intelligent Interactive Multimedia Systems and Services", Tsihrintzis G., Virvou M., Jain L., Howlett R., (Eds.), Springer, Smart Innovation, Systems and Technologies, Volume 11, 39-49, DOI: 10.1007/978-3-642-22158-3_5, pp.39-49, proceedings of the 4th International Conference on Intelligent Interactive Multimedia Systems and Services (IIMSS 2011), Peiraeus, Greece 20-22 July 2011. (pdf)
  •  Karousos N., Papaloukas S., Kostaras N., Xenos M., Tzagarakis M. and Karacapilidis N., “Usability Evaluation of Web-based Collaboration Support Systems: the case of CoPe_it!” In: M.D. Lytras, P. Ordonez De Pablos, A. Ziderman, A. Roulstone, H. Maurer and J.B. Imber (eds.), Knowledge Management, Information Systems, E-Learning, and Sustainability Research - Proceedings of the 3rd World Summit on the Knowledge Society (WSKS 2010), Part I, Corfu, Greece, September 22-24, 2010, Springer-Verlag, Berlin, Communications in Computer and Information Science, Vol. 111, pp. 248-258.
  • Koulocheri E., Soumplis A., Kostaras N., Xenos M. (2011), "Usability Inspection Through Heuristic Evaluation in E-Learning Environments: The LAMS Case", Proceedings of the VII International Conference on ICT in Education, ISBN: 978-972-98456-9-7, pp.617-630, Universidade do Minho, Braga, Portugal, 12-13 May 2011.(pdf)
  • Patriarcheas K., Papaloukas S., Xenos M., "Text based computer-mediated communication: A system for automated interpretation of discussion threads in distance education fora by using formal languages", Proceedings of the 2nd International Conference on Intelligent Networking and Collaborative Systems (INCOS 2010), IEEE Press, ISBN: 978-0-7695-4278-2, pp. 92-99, Thessaloniki, Greece, 24-26 November 2010. (pdf)
  • Patriarcheas K., Xenos M., "Collaborative learning: Reasons that influence the participation of students in distance education fora", Proceedings of the Social Applications for Lifelong Learning (SALL 2010), ISSN: 1792-586X, pp. 116-123, Patras, Greece, 4-5 November 2010.(pdf)
  • Xenos M., Papaloukas S., Kostaras N., "The Evaluation of an Online Virtual Game Environment (SimSafety) using HOU's Software Quality Laboratory", Proceedings of the Social Applications for Lifelong Learning (SALL 2010), ISSN: 1792-586X, pp. 63-67, Patras, Greece, 4-5 November 2010.(pdf)
  • Soumplis A., Koulocheri E., Kostaras N., Karousos N., "The evolution of e-Learning 2.0", Proceedings of the Social Applications for Lifelong Learning (SALL 2010), ISSN: 1792-586X, pp. 36-41, Patras, Greece, 4-5 November 2010.(pdf)
  • Karousos N., Papaloukas S., Kostaras N., Xenos M., Tzagarakis M. and Karacapilidis N. "Usability Evaluation of Web-based Collaboration Support Systems: the case of CoPe_it!". In M.D. Lytras, P. Ordonez De Pablos, A. Ziderman, A. Roulstone, H. Maurer and J.B. Imber (eds.), Knowledge Management, Information Systems, E-Learning, and Sustainability Research - Proceedings of the 3rd World Summit on the Knowledge Society (WSKS 2010), Part I, Corfu, Greece, September 22-24, 2010, Springer-Verlag, Berlin, Communications in Computer and Information Science, Vol. 111, pp. 248-258.(This email address is being protected from spambots. You need JavaScript enabled to view it. for further info)
  • Papaloukas S., Stoli C., Patriarcheas K., Xenos M., "A Survey on How Online Games Usability Affects the Retention of Information", Proceedings of the 14th Panhellenic Conference on Informatics (PCI 2010), IEEE Press, ISBN: 978-0-7695-4172-3, pp. 209-213, Tripoli, Greece, 10 - 12 September 2010.(This email address is being protected from spambots. You need JavaScript enabled to view it. for further info)
  • Patriarcheas K., Xenos M., "Educational techniques comparative study by using combined environment via computer and mobile devices in asynchronous discussion forum", accepted as full paper to be presented at 9th International Conference on Mobile Business and the 9th Global Mobility Roundtable (IEEE ICMB/GMR 2010), Athens, Greece, 13-15 June 2010. (This email address is being protected from spambots. You need JavaScript enabled to view it. for further info)
  • Sioutas S., Oikonomou K., Papaloukopoulos G., Xenos M., Manolopoulos Y., "Building an Efficient P2P Overlay for Energy-Level Queries in Sensor Networks", ACM MEDES 2009, ACM Conference on Management of Emergent Digital EcoSystems, Lyon, pp. 361-368, France, 27-30 October 2009.(pdf)
  • Patriarcheas K., Xenos M., "The message content category as analysis unit for discussions study in asynchronous distance education fora", Proceedings of the 4th Mediterranean Conference on Information Systems (AIS MCIS 2009), ISBN: 978-960-98566-7-6, pp. 75-84, Athens, Greece, 25-27 September, 2009. (pdf)
  • Patriarcheas K., Papaloukas S., Xenos M., "Suitable asynchronous distance education fora size for working groups in informatics teachers training", Proceedings of the 4th Balkan Conference in Informatics (BCI 2009), IEEE Press, ISBN: 978-0-7695-3783-2, pp. 157-162, Thessaloniki, Greece, 17-19 September, 2009. (pdf)
  • Papaloukas S., Patriarcheas K., Xenos M., "Usability Assessment Heuristics in New Genre Videogames", Proceedings of the 13th Panhellenic Conference on Informatics (PCI 2009), IEEE Press, ISBN: 978-0-7695-3788-7, pp. 202-206, Corfu, Greece, 10 - 12 September, 2009. (pdf)
  • Kostaras N., Xenos M., "Assessing the Usability of Augmented Reality Systems", 13th Panhellenic Conference on Informatics (PCI 2009), Local Proceedings, ISBN:978-960-98777-1-8, pp. 197-201, Corfu, Greece, 10 - 12 September, 2009. (pdf)
  • Patriarcheas K., Xenos M., "Asynchronous distance education forum - Brainstorming vs. Snowballing: a case study for teaching in programming didactics", In M. Spaniol et al. (Eds.), Advances in Web-Based Learning - ICWL 2009, Springer, Lecture Notes in Computer Science (LNCS), vol. 5686, pp. 322-331, ISBN: 978-3-642-03425-1, proceedings of the 8th International Conference on Web-based Learning, RWTH Aachen University, Aachen, Germany, 19-21 August, 2009. (pdf)
  • Pierrakeas C., Papadakis S., Xenos M., "Assisting Tutors at the Hellenic Open University in the processes of designing, planning, managing and reusing Learning Activities", In L. Cameron and J. Dalziel (Ed.) Proceedings of the 2009 European LAMS & Learning Design Conference, pp. 87-92, Open University, UK, 6 - 9 July 2009.(pdf)
  • Xenos M., Papaloukas S., Kostaras N., "Games' Usability and Learning - The Civilization IV Paradigm", IADIS GET2009, Game and Entertainment Technologies 2009, pp. 3-10, Algarve, Portugal, 17 - 19 June, 2009.(pdf)
  • Chrysochos E., Fotopoulos V., Xenos M., Stork M., Skodras A. N., Hrusak J., “Chaotic-Correlation Based Watermarking scheme for Still Images”, IEEE International Conference: Applied Electronics 2008, Pilsen, Czech Republic, September 10-11, 2008.
  •  Kostaras N., Xenos M., Koutsogiannis C., “Usability evaluation of software applications with the use of Usability Logger”, 8th Joint Conference on Knowledge-Based Software Engineering, JCKBSE 08, pp. 395-404, Piraeus, Greece, August 25-28, 2008.
  • Patriarcheas, K., Xenos, M., "The Asynchronous Distance Education by means of Internet: Factors that Influence its Effectiveness. The Case of Hellenic Open University", IEEE PCI, August 28-30, 2008, Samos, Greece, ISBN: 978-0-7695-3323-0, pp. 204 - 208. (pdf)
  • Xenos M., “Users’ Impressionism and Software Quality”, IADIS International Conference: IHCI Interfaces and Human Computer Interaction, Amsterdam, 25-27 July, pp. 11-17, 2008. This paper was selected for the outstanding paper award (1st paper among the 62 papers of IHCI 2008).
  • Kalles D., Pierrakeas C., Xenos M., "Intelligently Raising Academic Performance Alerts", 1st International Workshop on Combinations of Intelligent Methods and Applications (CIMA 2008), in conjunction with the 18th European Conference on Artificial Intelligence, Patras, Greece, July 21-22, pp. 37-42, 2008. (This email address is being protected from spambots. You need JavaScript enabled to view it. για περισσότερες πληροφορίες)
  • Papaloukas S., Xenos M., "Usability and Education of Games through Combined Assessment Methods", Workshop on "Gaming Design and Experience: Design for Engaging Experience and Social Interaction", under the 1st ACM International Conference on PErvasive Technologies Related to Assistive Environments, PETRA-2008, Athens, Greece, July 15-19, 2008. (pdf)
  • Stefani A., Xenos M., "Meta-metric Evaluation of E-Commerce-related Metrics", 2nd International Workshop on Software Quality and Maintainability, under the 12th European Conference on Software Maintenance and Reengineering (CSMR 2008) Athens, Greece, April 1-4, 2008. (pdf)
  • Garofalakis J., Stefani A., Stefanis V., Xenos M., "Quality Attributes of Consumer-based M-Commerce Systems", IEEE International Conference on E-Business and Telecommunication Networks, ICETE, ICE-B, Barcelona, 28-31 July, pp. 130-136, 2007. (pdf)
  • Stavrinoudis D., Xenos M., "The Influence of Aesthetics and Content Structuring to E-Learning Systems' Users Behavior", 11th Panhellenic Conference on Informatics with international participation, Special session on "Technological and Sociological Effects in the Use of e-Applications", Vol. B, pp. 551-558, Patras, Greece, 18-20 May 2007. (pdf)
  • Kostaras N., Xenos M., "Assessing Educational Web-site Usability using Heuristic Evaluation Rules", 11th Panhellenic Conference on Informatics with international participation, Special session on "Technological and Sociological Effects in the Use of e-Applications", Vol. B, pp. 543-550, Patras, Greece, 18-20 May 2007. (pdf)
  • Chrysochos E., Fotopoulos V., Skodras A., Xenos M., "Reversible Image Watermarking Based on Histogram Modification", 11th Panhellenic Conference on Informatics with international participation (PCI 2007), Vol. B, pp. 93-104, Patras, Greece, 18-20 May 2007. (pdf)
  • Stefani A., Kalles D., Xenos M., "Evaluating E-Commerce Sites with AI Tools: a modelling approach", 11th Panhellenic Conference on Informatics with international participation (PCI 2007), Vol. A, pp. 331-340, Patras, Greece, 18-20 May 2007. (pdf)
  • Xenos M., Tsiatsos T., Vassiliadis B., "Large Scale Deployment of Distance Education in Computer Science at the Hellenic Open University", 2nd International ELeGI Conference on Advanced Technology for Enhanced Learning, Barcelona, Spain, 24 October 2006. (pdf)
  • Hadzilacos T., Kalles D., Pierrakeas C., Xenos M. (equal authorship is implied), "On Small Data Sets revealing Big Differences", Proceedings of the 4th Hellenic Conference on Artificial Intelligence (SETN'06), Heraklion, Greece, pp. 512-515, 18-20 May, 2006. (pdf)
  • Drossos L., Vassiliadis B., Sakkopoulos E., Votis K., Stefani A., Tsakalidis A., Xenos M., Likothanassis S., "On the Personalization of an E-learning Environment in Higher Education using Graphs", Proceedings of the 10th Panhellenic Conference in Informatics, PCI2005, pp. 270-279, Volos, Greece, November 11-13, 2005. (pdf)
  • Xenos M., Vassiliadis B., "Learning Modern and Ancient Greek from Distance: The EAGLE Project on the Word Wide Web", (in Greek), 3rd International Conference on Open and Distance Learning 'Applications of Pedagogy and Technology', Vol. B, pp. 97-107, Patra, Greece, November 11-13, 2005. (pdf)
  • Xenos M., Avouris N., Stavrinoudis D., Margaritis M., "Experiences from Distant Collaboration Experiments on Programming Techniques", (in Greek), 3rd International Conference on Open and Distance Learning 'Applications of Pedagogy and Technology', Vol. A, pp. 545-559, Patra, Greece, November 11-13, 2005. (pdf)
  • Stefani A., Stavrinoudis D., Xenos M., “In-Depth Analysis of Selected Topics Related to the Quality Assessment of E-Commerce Systems”, Proceedings of the 2nd IEEE International Conference on E-Business and Telecommunication Networks, ICETE-2005, Reading UK, Vol. 1, pp. 122-128, October 3-7, 2005. 
  • Stefani A., Vassiliadis B., Xenos M., "Behavioral patterns in hypermedia systems: a short study of e-commerce vs. e-learning practices", ACM Conference on Hypertext & Hypermedia, Salzburg, Austria, September 6-9, 2005. (pdf)
  • Xenos M., Vassiliadis B., Skodras A., "GRID Technologies => 'Education' = 'Distance Education'", Proceedings of the 1st International ELeGI Conference on Advanced Technology for Enhanced Learning, Vico Equense - Napoli, Italy, March 14-16, 2005. (pdf)
  • Hadzilacos T., Xenos M., "Overview & Classification of Web-Based Education (Systems, Tools & Practices)", Proceedings of the the 4th IASTED International Conference on Web-Based Education, WBE 2005, Grindelwald, Switzerland, pp. 550-556, February 21-23, 2005. (pdf)
  • Stefani A., Stavrinoudis D., Xenos M., "Experimental Based Tool Calibration used for Assessing the Quality of E-Commerce Systems", Proceedings of the 1st IEEE International Conference on E-Business and Telecommunication Networks, Portugal, Volume 1, pp. 26-32, August 2004. (pdf)
  • Xenos M., Avouris N., Komis V., Stavrinoudis D., Margaritis M., "Synchronous collaboration in distance education: a case study in a Computer Science course", Proceedings of the 4th IEEE International Conference on Advance Learning Technologies, Joensuu, Finland, pp. 500-504, August 2004. (pdf)
  • Kapogiannis G., Stefani A., Xenos M., Mixanetzis K. "A Survey on the Business Goals, the Investment on Technology and the Return of Investment on Greek E-commerce Systems", Proceedings of the EURO 20th European Conference on Operational Research, Rhodes, July 2004. (pdf)
  • Stefani A., Xenos M., "Greek vs. International E-commerce Systems: An Evaluation based on User-centered Characteristics", Proceedings the 9th Panhellenic Conference in Informatics, PCI2003, Thessaloniki, pp. 70-79, 2003. (pdf)
  • Panagiotakopoulos C., Lionarakis A., Xenos M., "Open and Distance Learning: tools of information and communication technologies for effective learning", Proceedings of the sixth Hellenic European Research on Computer Mathematics and its Applications Conference, HERCMA2003, Athens, Greece, 2003. (pdf)
  • Hadzilacos T., Kalles D., Papadakis S., Xenos M. (equal authorship is implied), "Productionizing of Streaming Educational Material", Proceedings of the ICL International Workshop, Villach, Austria, 2003. (pdf)
  • Stefani A., Xenos M., Stavrinoudis D., "Modeling E-Commerce Systems' Quality with Belief Networks", Proceedings of the IEEE International Conference on Virtual Environments, Human-Computer Interfaces and Measurement Systems, VECIMS, Lugano, ISSN:0-7803-7785-0/03, pp.13-18, 2003. (pdf)
  • Xenos M. and Skodras A., "Evolving from a Traditional Distance Learning Model to e-Learning", Proceedings of the 1st International LeGE-WG Workshop: Towards a European Learning Grid Infrastructure - formulating the requirements of a European GRID for eLearning, Paris, France, 2003. (pdf)
  • Kostopoulos H., Kandiliotis S., Kostopoulos I., Xenos M., "A Digital Image Watermarking Technique using Modulated Pascal Triangles", Proceedings of the IASTED International Conference Signal Processing, Pattern Recognition & Applications, pp.82-86, Rhodes, Greece, 2003. (pdf)
  • Stefani A. and Xenos M., "A Model for Assessing the Quality of E-Commerce Systems", Proceedings of the PC-HCI 2001 Conference on Human Computer Interaction, Patras, pp. 105-109, 2001. (pdf)
  • Armeni S., Christodoulakis D., Kostopoulos I., Stamatiou Y., Xenos M. (equal authorship is implied), "Proving Copyright Ownership using Hard Instances on Computationally Intractable Problems", Proceedings of the 8th Panhellenic Conference on Informatics with international participation, Cyprus, Vol. 2, pp. 137-145, 2001. (pdf)
  • Xenos M., "Usability Perspective in Software Quality", Usability Engineering Workshop, Invited Paper, under the framework of the 8th Panhellenic Conference on Informatics with international participation, Proceedings, Vol. 2, pp. 523-529, Cyprus, 2001. (pdf)
  • Xenos M., "Addressing Quality Issues: Theory and Practice - A Case Study on a Typical Software Project", Proceedings of the SCI2001, 5th World Multi-Conference on Systemics, Cybernetics and Informatics, Orlando, Florida USA, Vol. I, pp. 556-560, 2001. (pdf)
  • Xenos M., Stavrinoudis D., Zikouli K. and Christodoulakis D., "Object-Oriented Metrics - A Survey", Proceedings of the FESMA 2000, Federation of European Software Measurement Associations, Madrid, Spain, 2000. (pdf)
  • Armeni S., Christodoulakis D., Kostopoulos I., Stamatiou Y., Xenos M. (equal authorship is implied), "A Transparent Watermarking Method for Color Images", Proceedings of the IEEE first Balkan Conference on Signal Processing, Communications, Circuits and Systems, Istanbul, Turkey, 2000. (pdf)
  • Stavrinoudis D., Xenos M., Peppas P. and Christodoulakis D., "Modelling revisions of users' perception of software quality", Proceedings of the 2WCSQ, the second World Congress on Software Quality, Yokohama, pp. 737-742, 2000. (pdf)
  • Xenos M., Stavrinoudis D. and Christodoulakis D., "CESM: a Perceived Software Quality Assesment Tool", Proceedings of the 4th International Conference on Software Process Improvement - Research into Education and training, INSPIRE '99, Heraklion, Crete, Greece, pp. 155-164, 1999. (pdf)
  • Stavrinoudis D., Xenos M. and Christodoulakis D., "Relation Between Software Metrics and Maintainability", Proceedings of the FESMA99 International Conference, Federation of European Software Measurement Associations, Amsterdam, The Netherlands, pp. 465-476, 1999. (pdf)
  • Xenos M., "Lessons Learned on Measuring Perceived Software Quality", Proceedings of the FESMA99 International Conference, Federation of European Software Measurement Associations, Amsterdam, The Netherlands, pp. 349-356, 1999. (pdf)
  • Stavrinoudis D., Xenos M., Peppas P. and Christodoulakis D., "Measuring User's Perception and Opinion of Software Quality", Proceedings of the 6th European Conference on Software Quality, Sponsored by European Organisation for Quality - Software Committee (EOQ-SC), Vienna, pp. 229-237, 1999. (pdf)
  •  Stavrinoudis D., Xenos M., Peppas P. and Christodoulakis D., “Measuring User’s Perception and Opinion of Software Quality”, Proceedings of the 6th European Conference on Software Quality, Sponsored by European Organisation for Quality - Software Committee (EOQ-SC), Vienna, pp. 229-237, 1998.
  • Xenos M., Thanos P. and Christodoulakis D., "QSUP: A Supporting Environment for Preserving Quality Standards", Proceedings of the 6th International Conference on Software Quality. Dundee Scotland, pp. 146-154, 1996. (pdf)
  • Xenos M., Stavrinoudis D. and Christodoulakis D., "The Correlation Between Developer-oriented and User-oriented Software Quality Measurements (A Case Study)", Proceedings of the 5th European Conference on Software Quality, Sponsored by European Organisation for Quality - Software Committee (EOQ-SC), Dublin Ireland, pp. 267-275, 1996. (pdf)
  • Xenos M., Christodoulakis D. and Dilidas G., "Towards a High Quality Computer-Based Patient Record", Proceedings of the AMICE'95: Strategic Alliances between Patient Documentation and Medical Informatics International Conference, Sponsored by European federation for Medical Informatics (EFMI), Amsterdam Netherlands, 1995. (pdf)
  • Xenos M. and Christodoulakis D., "Evaluating Software Quality by the Use of User Satisfaction Measurements", Proceedings of the 4th Software Quality Conference, Sponsored by SET (Scottish Enterprise Tayside), University of Abertay Dundee, pp. 181-188, 1995. (pdf)
  • Xenos M. and Christodoulakis D., "Software Quality: The User's Point of View", Proceedings of the International Conference on Software Quality and Productivity, Sponsored by IFIP, Hong-Kong, Vol. 3, pp. 481-487, 1994. (pdf)
  • Xenos M. and Christodoulakis D., "An Applicable Methodology to Automate Software Quality Measurements", Proceedings of the IEEE Software Testing and Quality Assurance International Conference, New Delhi India, IEEE Catalogue Number 94TH8063, Paper 0-7803-2608-3, pp. 121-125, 1994. (pdf)
  • Xenos M., Tsalidis C. and Christodoulakis D., "Measuring Software Complexity Using Software Metrics", Proceedings of the 3rd European Conference on Software Quality, Sponsored by EOQ (European Organisation for Quality), Madrid Spain, pp. 223-234, 1992. (pdf)

Reviewed International Workshops

  • Vassiliadis B., Fotopoulos V., Xenos M. and Skodras A., "Could Grid Facilitate Demanding Media Watermarking Applications?", Accepted (March 2004) Proceedings of the 4th International LeGE-WG Workshop: Towards a European Learning Grid Infrastructure - Towards a European Learning Grid Infrastructure - formulating the requirements of a European GRID for eLearning, Stuttgart, Germany, 2004. (pdf)
  • Hadzilacos T., Kalles D., Papadakis S., Xenos M. (equal authorship is implied), "Productionizing of Streaming Educational Material", Proceedings of the ICL International Workshop, Villach, Austria, 2003. (pdf)
  • Xenos M. and Skodras A., "Evolving from a Traditional Distance Learning Model to e-Learning", Proceedings of the 1st International LeGE-WG Workshop: Towards a European Learning Grid Infrastructure - formulating the requirements of a European GRID for eLearning, Paris, France, 2003. (pdf)

Reviewed National Conferences

  • Liapis, A., Katsanos, C., Sotiropoulos, D., Xenos, M. and Karousos, N. 2015. Stress Recognition in Human-computer Interaction Using Physiological and Self-reported Data: A Study of Gender Differences. Proceedings of the 19th Panhellenic Conference on Informatics (New York, NY, USA, 2015), 323–328, October. (link)
  • Katsanos, C., Tselios, N., Karousos, N., Xenos, M. (2015). Learning web form design by using the KLM Form Analyzer: A case study. In Proceedings of the 19th Pan-Hellenic Conference on Informatics, PCI 2015 (pp. 44-49), Athens, Greece: ACM, 1-3 Oct., 2015, doi: 10.1145/2801948.2801990 (link).
  • Patriarcheas K., Xenos M., “Student’s participation aspects in asynchronous discussions for distance education”, Proceedings of the 17th PCI2013, Thessaloniki Greece, 19-21 September 2013, pp. 235-242. doi>10.1145/2491845.2491880.
  • Liapis A., Xenos M., “The physiological Measurements as a Critical Indicator in Users’ Experience Evaluation”, Proceedings of the 17th PCI2013, Thessaloniki Greece, 19-21 September 2013, pp. 258-263. doi>10.1145/2491845.2491883.
  • Patriarcheas K., Xenos M., “The complexity of text based computer-mediated communication (CMC): It is impossible to create a new view for analysis of asynchronous discussions”, Proceedings of the 6th BCI2013, Thessaloniki Greece, 19-21 September 2013, pp. 1-8. doi>10.1145/2490257.2490259.
  • Koulocheri E., Soumplis A., Xenos M., "Applying Learning Analytics in an Open Personal Learning Environment: A quantitative approach", Proceedings of the 16th Pan-hellenic Conference on Informatics, PCI 2012, doi: 10.1109/PCi.2012.38, pp. 290-295, Piraeus, Greece: IEEE CPS 5-7 Oct, 2012. (pdf)
  • Koulocheri E., Soumplis A., Xenos M., "Applying Learning Analytics in an Open Personal Learning Environment: A quantitative approach", Proceedings of the 16th Pan-hellenic Conference on Informatics, PCI 2012, doi: 10.1109/PCi.2012.38, pp. 290-295, Piraeus, Greece: IEEE CPS 5-7 Oct, 2012. (pdf)
  • Katsanos C., Tselios N., Xenos M., "Perceived usability evaluation of learning management systems: a first step towards standardization of the System Usability Scale in Greek", Proceedings of the 16th Pan-Hellenic Conference on Informatics, PCI 2012, doi: 10.1109/PCi.2012.38, pp. 302-307, Piraeus, Greece: IEEE CPS, 5-7 Oct., 2012. (pdf)
  • Patriarcheas K., Xenos M., "Integration of a System for discussions study in Text-Based Computer-Mediated Communication", Proceedings of the 16th Pan-hellenic Conference on Informatics, PCI 2012, doi: 10.1109/PCi.2012.44, pp. 381-386, Piraeus, Greece:IEEE CPS 5-7 Oct, 2012. (pdf)
  •  Patriarcheas K., Papaloukas S., Xenos M., “Analyzing the Fora: An Algorithms Combination for the Representation of Messages”, 15th Panhellenic Conference on Informatics with international participation, PCI 2011, Kastoria, Greece, 30 September - 2 October 2011, pp. 353-357.
  • Soumplis A., Chatzidaki E., Koulocheri E., Xenos M., "Implementing an open Personal Learning Environment", Proceedings of the 15th Panhellenic Conference on Informatics with international participation (PCI 2011), IEEE Computer Society Press, ISBN: 978-0-7695-4389-5, pp. 345-349, Kastoria, Greece, 30 September – 2 October, 2011.(pdf)
  •  Patriarcheas K., Xenos M., “The Formal Languages as an Approach to Modelling Distance Education Fora”, 9th International Conference of Numerical Analysis and Applied Mathematics, ICNAAM 2011, Halkidiki, Greece, 19-25 September 2011, AIP Press, ISBN: 978-0-7354-0956-9, pp. 817-820.
  • Patriarcheas K., Papaloukas S., Xenos M., “Text Based Computer-mediated Communication: A System for Automated Interpretation of Discussion Threads in Distance Education Fora by Using Formal Languages”, Proceedings of the 2nd International Conference on Intelligent Networking and Collaborative Systems, INCoS 2010, Thessaloniki, Greece, 24-26 November 2010.
  • Xenos M., Papaloukas S., Kostaras N., “The Evaluation of an Educational Game (SimSafety) using HOU’s Software Quality Laboratory”, Proceedings of International Conference Social Applications for Lifelong Learning, SALL 2010, Patra, Greece, 4-5 November 2010 ISSN: 1792-586x, pp. 63-67.
  • Patriarcheas K., Xenos M., “Collaborative learning: Reasons that influence the participation of students in distance education fora”, Proceedings of International Conference Social Applications for Lifelong Learning, SALL 2010, Patra, Greece, 4-5 November 2010, ISSN: 1792-586x, pp. 116-123.
  • Papaloukas S., Stoli C., Patriarcheas K., Xenos M., “A Survey on How Online Games Usability Affects the Retention of Information”, Proceedings of the 14th Panhellenic Conference on Informatics (PCI 2010), IEEE Press, ISBN: 978-0-7695-4172-3, pp. 209-213, Tripoli, Greece, 10-12 September 2010.
  • Patriarcheas K., Xenos M., “Educational techniques comparative study by using combined environment via computer and mobile devices in asynchronous discussion forum”, 9th IEEE ICMB/GMR 2010, pp.297-304, ISBN:978-0-7695-4084-9, Athens, Greece, 13-15 June 2010.
  • Patriarcheas K., Xenos M., “The message content category as analysis unit for discussions study in asynchronous distance education fora”, MCIS2009, 4th Mediterranean Conference on Information Systems, Athens, 25-27 September 2009. 
  • Patriarcheas K., Papaloukas S., Xenos M., “Suitable asynchronous distance education fora size for working groups in informatics teachers training”, BCI’09, ΙΕΕΕ 4th Balkan Conference in Informatics, pp. 157-162, Thessaloniki, Greece, 17-19 September 2009.
  • Kostaras N., Xenos M., “Assessing the Usability of Augmented Reality Systems”, PCI 2009, 13th Panhellenic Conference on Informatics, Local Proceedings, pp. 197-203, Corfu, Greece, 10-12 September 2009.
  • Papaloukas S., Patriarcheas K., Xenos M., “Usability Assessment Heuristics in New Genre Videogames”, Proceedings of the 13th Panhellenic Conference on Informatics (PCI 2009), IEEE Press, ISBN: 978-0-7695-3788-7, pp. 202-206, Corfu, Greece, 10 - 12 September, 2009.
  • Φιλιππόπουλος Χ. , Ξένος Μ. , "Ανάπτυξη και Αξιολόγηση Εκπαιδευτικού Παιχνιδιού για τη Διαχείριση Έργων Λογισμικού", (in Greek) Παρακτικά Εισηγήσεων, 3ο Πανελλήνιο Επιστημονικό Φοιτητικό Συνέδριο Πληροφορικής, pp. 211-220, Σεπτέμβριος 10-12, Κέρκυρα, 2009.
  • Stavrinoudis D., Xenos M., “Comparing internal and external software quality measurements”, 8th Joint Conference on Knowledge-Based Software Engineering, JCKBSE 08, pp. 115-124, Piraeus, Greece, August 25-28, 2008.
  • Patriarcheas K., Xenos M., “The asynchronous distance education by means of Internet: factors that influence its effectiveness. The case of Hellenic Open University”, 12th Pan-Hellenic Conference on Informatics, PCI2008, pp. 204-210, Samos, Greece, August 28-30, 2008.
  • Kalles D., Pierrakeas C., Xenos M., “Intelligently Raising Academic Performance Alerts”, 1st International Workshop on Combinations of Intelligent Methods and Applications (CIMA 2008), in conjunction with the 18th European Conference on Artificial Intelligence, Patras, Greece, July 21-22, pp. 37-42, 2008.
  • Papaloukas S., Xenos M., “Usability and Education of Games through Combined Assessment Methods”, Workshop on "Gaming Design and Experience: Design for Engaging Experience and Social Interaction", under the 1st ACM International Conference on PErvasive Technologies Related to Assistive Environments, PETRA-2008, Athens, Greece, July 15-19, 2008.
  • Stefani A., Xenos M., “Meta-metric Evaluation of E-Commerce-related Metrics”, 2nd International Workshop on Software Quality and Maintainability, under the 12th European Conference on Software Maintenance and Reengineering (CSMR 2008) Athens, Greece, April 1-4, 2008.
  • Stavrinoudis D., Xenos M., The Influence of Aesthetics and Content Structuring to E-Learning Systems’ Users Behavior”, 11th Panhellenic Conference on Informatics with international participation, Special session on “Technological and Sociological Effects in the Use of e-Applications”, Vol. B, pp. 551-558, 18-20 May 2007, Patras, Greece.
  • Kostaras N., Xenos M., “Assessing Educational Web-site Usability using Heuristic Evaluation Rules”, 11th Panhellenic Conference on Informatics with international participation, Special session on “Technological and Sociological Effects in the Use of e-Applications”, Vol. B, pp. 543-550, 18-20 May 2007, Patras, Greece.
  • Chrysochos E., Fotopoulos V., Skodras A., Xenos M., “Reversible Image Watermarking Based on Histogram Modification”, 11th Panhellenic Conference on Informatics with international participation (PCI 2007), Vol. B, pp. 93-104, 18-20 May 2007, Patras, Greece.
  • Stefani A., Kalles D., Xenos M., “Evaluating E-Commerce Sites with AI Tools: a modelling approach”, 11th Panhellenic Conference on Informatics with international participation (PCI 2007), Vol. A, pp. 331-340, 18-20 May 2007, Patras, Greece.
  • Hadzilacos T., Kalles D., Pierrakeas C., Xenos M., “On Small Data Sets revealing Big Differences”, Proceedings of the 4th Hellenic Conference on Artificial Intelligence (SETN'06), Heraklion, Greece, pp. 512-515, 18-20 May, 2006.
  • Drossos L., Vassiliadis B., Sakkopoulos E., Votis K., Stefani A., Tsakalidis A., Xenos M., Likothanassis S., “On the Personalization of an E-learning Environment in Higher Education using Graphs”, Proceedings of the 10th Panhellenic Conference in Informatics, PCI2005, 11-13 November, Volos, Greece, pp. 270-279, 2005.
  • Ξένος M., Αβούρης N., Κόμης B., Σταυρινούδης Δ., Μαργαρίτης Μ., "Εφαρμογή μεθόδων σύγχρονης συνεργασίας από απόσταση στο πρόγραμμα σπουδών του Ανοικτού Πανεπιστημίου", Workshop "Ζητήματα Σχεδιασμού και Αξιολόγησης Σύγχρονων Συνεργατικών Συστημάτων Μάθησης με Υπολογιστές", στο πλαίσιο του 4ου Συνεδρίου της ΕΤΠΕ "Οι Τεχνολογίες της Πληροφορίας και της Επικοινωνίας στην Εκπαίδευση", Αθήνα, Σεπτέμβριος, 2004. (pdf)
  • Kapogiannis G., Stefani A., Xenos M., Mixanetzis K. “A Survey on the Business Goals, the Investment on Technology and the Return of Investment on Greek E-commerce Systems”, Proceedings of the EURO 20th European Conference on Operational Research, Rhodes, July 2004.
  • Πιερρακέας Χ., Ξένος Μ. και Χατζηλάκος Θ., "Πρότυπα συμπεριφοράς ως προς το Ρυθμό Σπουδών σε ένα Ανοικτό Πανεπιστήμιο: Το προπτυχιακό Πρόγραμμα Σπουδών στην Πληροφορική του ΕΑΠ", Πρακτικά Εισηγήσεων, 2ο Πανελλήνιο Συνέδριο για την Ανοικτή και εξ Αποστάσεως Εκπαίδευση, pp. 220-233, Πάτρα, 2003. (pdf)
  • Ξένος Μ., "Μοντελοποίηση της Συμπεριφοράς των Φοιτητών της Πληροφορικής με Χρήση Bayesian Networks", Πρακτικά Εισηγήσεων, 2ο Πανελλήνιο Συνέδριο για την Ανοικτή και εξ Αποστάσεως Εκπαίδευση, pp. 318-329, Πάτρα, 2003. (pdf)
  • Stefani A. and Xenos M., “A Model for Assessing the Quality of E-Commerce Systems”, Proceedings of the PC-HCI 2001 Conference on Human Computer Interaction, Patras, Greece, pp. 105-109, 2001.
  • Πιερρακέας Χ., Ξένος Μ. και Πιντέλας Π., "Εκτίμηση - Αξιολόγηση του Εκπαιδευτικού Υλικού - Συμβούλου Καθηγητή. Απόψεις των Φοιτητών - Σημεία Βελτίωσης", Πρακτικά Εισηγήσεων, 1ο Πανελλήνιο Συνέδριο για την Ανοικτή και εξ Αποστάσεως Εκπαίδευση, pp. 459-477, Πάτρα, 2001. (pdf)
  • Ξένος Μ., Πιερρακέας Χ. και Πιντέλας Π., "Εντοπισμός Ομάδων Φοιτητών του Ε.Α.Π. με Υψηλή Πιθανότητα Διακοπής Φοίτησης - Εμπειρίες και Ιδιαιτερότητες στην Πληροφορική", Πρακτικά Εισηγήσεων, 1ο Πανελλήνιο Συνέδριο για την Ανοικτή και εξ Αποστάσεως Εκπαίδευση, pp. 89-105, Πάτρα, 2001. (pdf)
  • Xenos M., Stavrinoudis D. and Christodoulakis D., “CESM: a Perceived Software Quality Assessment Tool”, Proceedings of the 4th International Conference on Software Process Improvement - Research into Education and training, INSPIRE '99, Heraklion, Crete, Greece, pp. 155-164, 1999.
  • Xenos M., Tsalidis C. and Christodoulakis D., “Measuring Software Complexity Using Software Metrics”, Proceedings of the 3rd European Conference on Software Quality, Sponsored by EOQ (European Organisation for Quality), Madrid Spain, pp. 223-234, 1992.Xenos M., Stavrinoudis D. and Christodoulakis D., “CESM: a Perceived Software Quality Assessment Tool”, Proceedings of the 4th International Conference on Software Process Improvement - Research into Education and training, INSPIRE '99, Heraklion, Crete, Greece, pp. 155-164, 1999.

Books

  • Vassala P., Gkiosos I. Koutsoumpa M., Lionarakis A., Xenos M., "Educational & Technological Applications", Hellenic Open University, ISBN: 960-538-583-Χ, 2005. (This email address is being protected from spambots. You need JavaScript enabled to view it. for further info)
  • Xenos M. "Software Quality". (in Greek) Filomathia Publications. ISBN: 960-87710-2-1, 2003. (This email address is being protected from spambots. You need JavaScript enabled to view it. for further info)
  • Xenos M. and Christodoulakis D., "Practical Issues of Software: Databases", (in Greek) Hellenic Open University Press, School of Sciences & Technology, ISBN: 960-538-210-5, 2003. (This email address is being protected from spambots. You need JavaScript enabled to view it. for further info)
  • Xenos M. "Software Management and Software Quality", (in Greek) Hellenic Open University Press, School of Sciences & Technology, ISBN: 960-538-405-1, 2003. (This email address is being protected from spambots. You need JavaScript enabled to view it. for further info)
  • Xenos M. and Christodoulakis D., "Introduction to Databases: A developer's approach". (in Greek) Papasotiriou Publications. ISBN: 960-7530-24-1, 2002. (This email address is being protected from spambots. You need JavaScript enabled to view it. for further info)
  • Xenos M. and Christodoulakis D., "Databases", (in Greek) Hellenic Open University Press, School of Sciences & Technology, ISBN: 960-538-116-8, 2000. (This email address is being protected from spambots. You need JavaScript enabled to view it. for further info)
  • Xenos M. and Christodoulakis D., "Software Engineering: Principles and Methodologies", (in Greek) Patras University Press, 1993. (This email address is being protected from spambots. You need JavaScript enabled to view it. for further info)

Reviewed Chapters in International Books

  •  Drossos L., Vassiliadis B., Stefani A., Xenos M., "Blended ICT models for use in Higher Education" , In "Adapting Information and Communication Technologies for Effective Education", Tomei L. (Ed), Information Science Reference, ISBN: 978-1599049250, Chapter II, pp. 13-29, November 2007. (pre-print version available - pdf)
  • Stefani A., Stavrinoudis D., Xenos M., "In-Depth Analysis of Selected Topics Related to the Quality Assessment of E-Commerce Systems", In e-Business and Telecommunication Networks Vol II, Filipe J., Coelhas H., Saramago M., (Eds.), ISBN: 978-3-540-75992-8, pp. 39-48, 2007. (pre-print version available - pdf)
  • Rigou M., Sirmakessis S., Stavrinoudis D., Xenos M., "Tools and Methods for Supporting Online Learning Communities and their Evaluation", In "User-Centered Design of Online Learning Communities", Idea Group Inc., Lampropoulos N. and Zaphiris P. (Eds.), Information Science Publishing, ISBN: 1-59904-358-0, Chapter X, pp. 215-237, 2007. (pre-print version available - pdf)
  • Stefani A., Stavrinoudis D., Xenos M., "Experimental Based Tool Calibration used for Assessing the Quality of E-Commerce Systems", In "e-Business and Telecommunication Networks", Ascenso J., Vasiu L., Belo C., Saramago M., (Eds.), ISBN: 1-4020-4760-6, pp. 91-97, 2006. Selected (29 out of 154) papers from ICETE2004, Portugal, August 2004. (pdf)
  • Stefani A., Vassiliadis B., Xenos M., "Behavioral patterns in hypermedia systems: a short study of e-commerce vs. e-learning practices", In "Adaptive and Personalized Semantic Web", Sirmakesis S. (Ed.), Springer, ISBN: 3-540-30605-6, pp. 57-64, 2006. Selected –Editor’s selection– (8) papers from ACM Conference on Hypertext & Hypermedia, 2006.
  • Xenos M., "Software Metrics and Measurements", In "Encyclopedia of E-Commerce, E-Government and Mobile Commerce", Mehdi Khosrow-Pour (Ed.), Idea Group Publishing, ISBN: 1-59140-799-0, pp. 1029-1036, 2006. (pre-print version available - pdf)
  • Armeni S., Christodoulakis D., Kostopoulos I., Kountrias C., Stamatiou Y., Xenos M., "An Information Hiding Method based on Computational Intractable Problems", In "Advances in Informatics", Manolopoulos Y., Evripidou S., Kakas A., (Eds.), Springer Verlag, ISSN 0302-9743, Vol. 2563, pp. 262-278, 2003. Selected (31 out of 104) and revised extended versions of papers from 8th PCI 2001. (pre-print version available - pdf)
  • Xenos M., "Technical Issues Related to IT Governance Tactics: Product Metrics, Measurements and Process Control", In Strategies for Information Technology Governance, edited by Wim Van Grembergen. Idea Group Publishing, ISBN 1-59140-140-2, Chapter IX, pp. 216-244, 2003. (pre-print version available - pdf)
  • Xenos M. and Christodoulakis D., "Software Quality: The User's Point of View", In "Software Quality and Productivity: Theory, practice, education and training", Edited by Mathew Lee, Ben-Zion Barta and Peter Juliff, Chapman and Hall Publications, ISBN 0-412-629607, pp. 266-272, 1995. (pre-print version available - pdf)

Technical Reports

  • Papadopoulos T., Xenos M., "Quality Assessment of Educational Websites using Heuristic and Laboratory Methods", Technical Report HOU-CS-TR-2007-10-GR, Hellenic Open University, 2007.
  • Patriarcheas K., Xenos M., "Using a formal language to model the forums used for distance education", Technical Report HOU-CS-TR-2007-09-GR, Hellenic Open University, 2007. (pdf in Greek)
  • Aggelis G., Vlassi A., Koutsogiannis C., Krilis S., Lagoudianaki M., Milakis G., Mosxos D., Xenos M., Papageorgiou C., Papadopoulos A., Pavlakis P., "A Methodology for the Educational Software Quality Assessment and Potential Applications on the Educational Digital Content of HOU", Technical Report HOU-CS-TR-2006-07-GR, Hellenic Open University, 2006. (pdf in Greek)
  • Stamatiou Y., Pierrakeas C., Xenos M., "Cryptographicaly secure communication among the tutors of the Hellenic Open University: Organization, experiences and conclusions from the application in the module Introduction to Informatics", (In Greek) Technical Report HOU-CS-TR-2004-04-GR, Hellenic Open University, 2004. (pdf in Greek)
  • Xenos M., Avouris N., Komis B., Stavrinoudis D., Margaritis M., "Applying synchronous collaboration in the Computer Science Course of the Hellenic Open University", (In Greek) Technical Report HOU-CS-TR-2004-03-GR, Hellenic Open University, 2004. (pdf in Greek)
  • Vogiatzis Y., Xenos M., Hadzilakos A., "Experiences from the pilot application of virtual classrooms in the Computer Science Course", (In Greek) Technical Report HOU-CS-TR-2003-01-GR, Hellenic Open University, 2003. (pdf in Greek)

Master Theses and PhD Dissertations

  • Xenos M., "Methodology to Control and Assure Software Quality based on Product Metrics and Software External Quality Characteristics", Ph.D. Thesis, Patras University, Computer Engineering and Informatics Department, 1996. (This email address is being protected from spambots. You need JavaScript enabled to view it. for further info)
  • Xenos M., "Metrics Interpretation", Graduating Thesis, Patras University, Computer Engineering and Informatics Department, 1991. (This email address is being protected from spambots. You need JavaScript enabled to view it. for further info)