Michalis Xenos, Ph.D.
Short CV
Michalis Xenos is a Lecturer in the School of Science and Technology of the Hellenic Open University. He is the
Coordinator for the Module “Introduction to Informatics”, which involves 26 tutors and about 780 students.
Contact Info
Michalis Xenos, Ph.D.
School of Science & Technology
Hellenic Open University
Patras, GR 26223
GREECE
Phone:
Fax:
E-mail:
+30 610 361490
+30 610 361410
m.xenos@eap.gr
Research Interests

Software Engineering and in particular:
 Software Quality Assurance
 Software Evaluation Methods
 Software Metrics and Models

Open and Distance Learning Methods and in particular:
 Education Software Evaluation
 Studies in Information Sciences based in ODL method
 ODL Automation, Methods and Tools

Information Hiding Techniques and in particular:
 Watermarking Techniques
 Watermarked Images Quality Measurements
Selected Publications
Papers on Software Quality Assurance and Software Metrics

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, Typorama Publications, pp. 105-109,
2001. Click here for the 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. Click here for the PDF.

Xenos M., “Addressing Quality Issues: Theory and Practice – A Case Study on a Typical Software Project”,
Best paper of the session: Information Systems Development, Methods and Methodologies. Proceedings of
the SCI2001, 5th World Multi-Conference on Systemics, Cybernetics and Informatics, Orlando, Florida USA,
Vol. I, pp. 556-560, 2001. Click here for the 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. Click here for the 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,
2000. Click here for the 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. Click here for the 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. Click here for the 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. Click here for the 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, 1998. Click here for the 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. Click here for a preprint PDF version.

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. 146154, 1996. Click here for the 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. Click here for the 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. Click here for a short preprint extraction of the paper 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. Click here for the 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. Click here
for the PDF.
Papers on Watermarking and Information Hiding Techniques

Armeni S., Christodoulakis D., Kostopoulos I., Stamatiou Y., Xenos M., “Proving Copyright Ownership
using Hard Instances on Computationally Intractable Problems”, Accepted to be published at Journal of
Discrete Mathematical Sciences & Cryptography, 2002. The paper is not electronically available yet due to
copyright reasons.

Armeni S., Christodoulakis D., Kostopoulos I., Stamatiou Y., Xenos M., “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. Click here for
the PDF.

Armeni S., Christodoulakis D., Kostopoulos I., Stamatiou Y., Xenos M., “A Trasparent Watermarking
Method for Color Images”, Proceedings of the IEEE first Balkan Conference on Signal Prosessing,
Comunications, Circuits and Systems, Istanbul, Turkey, 2000. Click here for the PDF.
Papers on Open and Distance Learning Education

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”, Accepted to be published in
International Journal of Computers & Education, 2002. The paper is not electronically available yet due to
copyright reasons.