Dr. Evangelos Sakkopoulos

Computer Engineering and Informatics Dept., University of Patras, Greece

Address: Ktirio B (prokat) GR 26500, Rio, Patras, Greece (Office @CEID: Π303)

Telephone: +30 2610 960349

Fax: +30 2610 960322

Welcome to Evangelos Sakkopoulos WebPage (HomePage)

Teaching and Students guidance

International Refereed Journals

Chapters in International Refereed Books and Encyclopedias

International Refereed Conferences/Workshops

More Publications

International Refereed Journals (submitted manuscripts)

________

Publications in Chronological Order

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AUTHOR'S NOTICE: According to default policy of the Academics and Researchers in Computer Engineering and Informatics Dept, University of Patras, author names in scientific publication references are listed in alphabetical order (some exceptions exist).

research interests

Software Engineering focussing on Internet Technologies
- Web Engineering
- Service Oriented Architecture and particularly Web Services
- Web Application design
- Web Site re-organisation and hotlinks assignment
Advanced Programming
Programming Mobile Web Applications
Information Retrieval and Web Searching
P2P
Data Structures
Information Systems
Educational Technologies
Personalization and Adaptive Systems

International Refereed Journals (Count: 24 updated)

[J1].]. E. Sakkopoulos, M. Lytras, and A. Tsakalidis, (2006), “Adaptive Mobile Web Services Facilitate Communication and Learning Internet Technologies”, in IEEE Transactions on Education, special issue on "Mobile Technology for Education" edited by Keng Siau, Vol 42, No 2, May 2006, pp. 208-215 (Impact factor: 1.400)   pdf
[J2]. L. Drosos, E. Sakkopoulos, S. Sioutas, S. Sirmakessis (2006), “Balanced Distributed Web Service Lookup System”, in J. Network and Computer Applications, Elsevier Science, Vol 32, No 2, pp.149-162 (impact factor: 1.000) pdf
[J3]. J. Garofalakis, Y. Panagis, E. Sakkopoulos and A. Tsakalidis (2006), Contemporary Web Service Discovery Mechanisms, Journal of Web Engineering, S. Christodoulou ed., special issue “Web Engineering: A Reference model, development aspects and the hypermedia perspective”, Rinton Press, Vol.5, No3, September 2006, pp 265-290 (impact factor: 0,412)   pdf
[J4]. Ch. Makris , Y. Panagis, E. Sakkopoulos, and A. Tsakalidis,(2007), “Category ranking for personalized search, in the Data and Knowledge Engineering Journal (DKE), Elsevier Science, Volume 60, Issue 1 , January 2007, Pages 109-125 (impact factor: 1.480) pdf
[J5]. V. Diamadopoulou, Y. Panagis, E. Sakkopoulos, and Ch. Makris (2006), “Techniques to support Web Service selection and consumption with QoS characteristics”, in the J. Network and Computer Applications, Elsevier Science, Vol 32, No 2, pp. 108-130 (impact factor: 1.000) pdf
[J6]. Ch. Makris Y. Panagis, E. Sakkopoulos, and A. Tsakalidis, (2006) “Efficient and adaptive discovery techniques of web services handling large data sets”, in J. Systems and Software, Elsevier Science, Vol 79, No. 4, pp 480-495 (impact factor: 1.241) pdf
[J7]. E. Sakkopoulos, D. Kanellopoulos and A. Tsakalidis (2006), “Semantic mining and web service discovery techniques for media resources management”, in Int. J. Metadata, Semantics and Ontologies, Vol. 1, No. 1, pp.66–75.(indexed by DBLP)   pdf
[J8]. J. Garofalakis, Y. Panagis, E. Sakkopoulos, and A. Tsakalidis (2006), “Optimization mechanism for Web Search Results using Topic Knowledge”, in the International Journal of Knowledge and Learning, Vol. 2 (1&2), pp. 140-153 (indexed by DBLP)   pdf
[J9]. L. Drossos, B. Vassiliadis, A. Stefani, M. Xenos, E. Sakkopoulos and A. Tsakalidis (2006), “Introducing ICT in a traditional higher education environment: background, design and evaluation of a blended approach”, in International Journal of Information and Communications Technology Education (IJICTE), Vol. 2, Issue 1, 2006, pp. 65-78 (indexed in the Information Systems Journals)   pdf
[J10]. Y. Makripoulias, Ch. Makris, E. Sakkopoulos , Y. Panagis, P. Adamopoulou and A. Tsakalidis, “Towards Ubiquitous Computing with Quality of Web Service support”, in Upgrade, The European Journal for the Informatics Professional, Vol VI, no 5, Oct 2005, pp. 29-34   pdf
[J11]. Liopa-Tsakalidis, E. Sakkopoulos, D. Savvas, A.B. Sideridis and J. Tzimas, (2005), “HydroNet: An Intelligent Hydroponics Web Service Environment”, in the Journal of Neural Parallel and Scientific Computations, Dynamic Publishers, vol. 13, 2005, pp. 15-36.   pdf
[J12]. E. Christopoulou, J. Garofalakis, Ch. Makris, Y. Panagis, E. Sakkopoulos, A. Tsakalidis (2003), “Techniques and Metrics for Improving Website Structure“, Journal of Web Engineering, Vol.2 No.1&2 pp. 090-104. (impact factor: 0,412)   pdf
[J13]. C. Bouras, P. Destounis, J. Garofalakis, A. Gkamas, G. Sakalis, E. Sakkopoulos, J. Tsaknakis, Th Tsiatsos, “Efficient Web-based open distance learning”, in Journal Telematics and Informatics, Elsevier Science, Vol. 17, Issue 3, 2000, pp. 213-237. (indexed by ISI JCR at publication time and DBLP)   pdf
[J14]. C. Bouras, P. Destounis, J. Garofalakis, A. Gkamas, G. Sakalis, E. Sakkopoulos, J. Tsaknakis, Th Tsiatsos, “Efficient Data Management to support Educational Activities”, in International EurODL: European Journal of Open and Distance Learning, ISSN# 1027-5207, 06.12.1999. pdf
[J15]. Konstantinos Markellos, Evangelos Sakkopoulos, Spiros Sirmakessis, Athanasios Tsakalidis “Semantic Web Search for e-Government: The case study of Intrastat”, International Journal of Internet Technologies. Vol. 8, No. 4, 2007 (indexed by DBLP) pdf
[J16]. Y. Panagis, E. Sakkopoulos, S. Sirmakessis, A. Tsakalidis, & G. Tzimas, “Techniques for mining the design of e-government services to enhance end-user experience”, E-Democracy, an International Journal of, Inderscience (indexed by DBLP) . pdf
[J17]. D. Kanellopoulos, E. Sakkopoulos, M. Lytras, & A. Tsakalidis, “Using web-based teaching interventions in computer science courses”, IEEE Transactions on Education, IEEE Nov. 2007, Vol. 50, No. 4, pp. 338-344. (impact factor: 1.400) pdf
[J18]. Poulia Adamopoulou, Evangelos Sakkopoulos, A. Tsakalidis, & M. Lytras, “Resource based Online eService Selection”, Journal of Universal Computer Science (JUCS),Vol. 13, No. 9, 2007, pp. 1138-1156. (impact factor: 0.488) pdf
[J19]. Evangelos Sakkopoulos, Yannis Panagis, Konstantinos Papakonstantinou, & Athanasios Tsakalidis, “Efficient Algorithms for Quality based Web Service Selection”, International Journal of Web Engineering and Technology (IJWET), Inderscience Publishers, Vol. 4, No. 1, 2008, pp. 114-134 (indexed by DBLP) pdf
[J20]. Miltiadis Lytras, Evangelos Sakkopoulos, Patricia Ordonez de Pablos, "Semantic Web and Knowledge Management for the health domain: state of the art and challenges for the Seventh Framework Programme (FP7) of the European Union (2007-2013)", International Journal of Technology and Management (IJTM), Inderscience Publishers, corrected proof, in press (impact factor: 0.526) pdf
[J21]. John Garofalakis, Theodoula Giannakoudi, Evangelos Sakkopoulos, "An Integrated Technique for Web Site Usage Semantic Analysis: the Organ System", Journal of Web Engineering, Vol. 6, No 3, pp. 261-280 (impact factor: 0.412)   pdf
[J22]. Laskaridis, G., Markellos, K., Markellou, P., Panayiotaki, A., Sakkopoulos, E. and Tsakalidis, A, "E-Government and Interoperability Issues", International Journal of Computer Science and Network Security, ISSN : 1738-7906, Vol.7, No. 9, Sept 2007, pp. 28-38 pdf
[J23]. S. Sioutas, E. Sakkopoulos, Ch. Makris, B. Vassiliadis, A. Tsakalidis and P. Triantafillou, “Dynamic Web Service discovery architecture based on a novel peer based overlay network”, Journal of Systems and Software, in Press, (ISI Science Citation Index (SCI) Impact Factor: 1,241) pdf
[J24] A. D. Antoniou, J. Garofalakis, C. Makris, Y. Panagis and E. SakkopoulosA, “Context-similarity based hotlinks assignment: Model, metrics and algorithm.”, Data and Knowledge Engineering (DKE), in press available online, (ISI Science Citation Index (SCI) Impact Factor: 1,480) doi:10.1016/j.datak.2009.04.007

M[4]. Evangelos Sakkopoulos, “Semantic technologies for mobile Web and personalized ranking of mobile Web search results”, Metadata and Semantics, Springer, pp. 299-308, 2008

Please do not hesitate to contact me by email for any papers that do not appear online.t do not appear online.

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Chapters in International Refereed Books and Encyclopedias (Count: 3)

[B1]. J. Garofalakis, T. Giannakoudi, Y. Panagis, E. Sakkopoulos, A. Tsakalidis, “Semantic Knowledge Mining Techniques for Ubiquitous access media usage analysis”, book chapter in Ubiquitous and Pervasive Knowledge and Learning Management: Semantics, Social Networking and New Media to their full potential, Eds M.D. Lytras, Ambjorn Naeve, in press press pdf
[B2]. Ch. Makris, Y. Panagis, E. Sakkopoulos, and A. Tsakalidis, (2007) “IT Application Development with Web Services”, book chapter in the Encyclopedia of Information Science and Technology, 2nd Edition, edited by Dr. Mehdi Khosrow-Pour, Idea Group Inc., in press (corrected proof) roof) pdf
[B3]. Y. Panagis, E. Sakkopoulos, S. Sioutas and A. Tsakalidis, (2006) “Web Service Integration and Management Strategies for Large Scale Datasets”, book chapter in ed. Prof. Zongmin Ma, Database Modelling for Industrial Data Management: Emerging Technologies and Applications, Idea Group Inc., pp. 217-243. -243. pdf
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International International Refereed Conferences/Workshops (Count: 29) reverse order count

[C29] Sioutas, S., Papaloukopoulos, G., Sakkopoulos, E., Tsichlas, K., Manolopoulos, Y., "A novel Distributed P2P Simulator Architecture: D-P2P-Sim", in CIKM 2009 (the 18th ACM Conference on Information and Knowledge Management) as demonstration, Hong Kong, November 2-6, 2009 (to appear)

[C28]. Makris, Ch., Panagis, Y., Plegas, Y., Sakkopoulos, E., ”An integrated Web System to facilitate personalized web searching algorithms”, ACM 23rd Annual ACM Symposium on Applied Computing (ACM SAC 2008), Track on Web Technologies, Ceará, Brazil, March 16 - 20, 2008, pp. 2397-2402, pdf
[C27] John Garofalakis, John Giannakou, Theodoula Giannakoudi, Evangelos Sakkopoulos: “Promo: Novel metrics that combine hits and accessibility criteria in order to promote important content and links”, Euro American Conference on Telematics and Information Systems, ACM, 2007, ISBN # 978-1-59593-598-4 pdf
[C26]. John Garofalakis, Theodoula Giannakoudi, Evangelos Sakkopoulos , “An integrated technique for Web Site Usage Semantic Analysis: The ORGAN System”, International Workshop Logging Traces of Web Activity: The Mechanics of Data Collection in conjunction with the WWW 2006, in the Workshop Proceedings, Edinburg, Scotland, May 23, 2006 pdf
[C25]. K. Papakonstantinou, E. Sakkopoulos, Y. Panagis, Ch. Makris, A. Tsakalidis, “Web Service Workflow Selection using Measured Variation in Operating System and Network Resource Consumption”, International Workshop on Architectures, Models and Infrastructures to Generate Semantics in Peer to Peer and Hypermedia Systems in conjunction with ACM HyperText 2006, in the ACM HT06 Workshop Proceedings, Odense, Denmark, August 23, 2006 URL: http://mmlab.ceid.upatras.gr/people/sakkopoulos/conf/ht06.pdf pdf
[C24]. T. Katsimpa, Y. Panagis, E. Sakkopoulos, G. Tzimas, A. Tsakalidis, “Application Modeling using Reverse Engineering Techniques”, in the proceedings of the 2006 21st Annual ACM Symposium on Applied Computing (ACM SAC 2006), Track on Model Transformation, Dijon, France, April 23 -27, 2006, pp. 1250-1255 pdf
[C23]. Ch. Makris, E. Sakkopoulos, S. Sioutas, P. Triantafillou, A. Tsakalidis, B. Vassiliadis, "NIPPERS: Network of InterPolated PeERS for Web Service Discovery", in the proceedings of the 2005 IEEE International Conference on Information Technology: Coding & Computing (IEEE ITCC 2005), Track Next Generation Web and Grid Systems, 2005 in Las Vegas, USA, Vol. 2, pp. 193-198 pdf
[C22]. J. Garofalakis, Th. Matsoukas, Y. Panagis, E. Sakkopoulos, A. Tsakalidis. “Personalization Techniques for Web Search Results Categorization”, in the proceedings of the 2005 IEEE International Conference on e-Technology, e-Commerce and e-Service (IEEE EEE 2005), 29 March - 1 April 2005 in Hong Kong, China, pp. 148-151 pdf
[C21]. E. Dimopoulos, A. Panousis, E. Sakkopoulos, A. Tsakalidis, “WiFiAdmin: An Intelligent Web-based Management Environment for Wireless Networks”, in the proceedings of IEEE International Conference on Information Technology and Applications 2005 (IEEE ICITA 2005), Sydney 4-7/7/2005, pp. 508-513 pdf
[C20]. J. Garofalakis, E. Sakkopoulos, S. Sirmakessis, A. Tsakalidis “Integrating Adaptive Techniques with Web Services“,in the proceedings of the 2003 IEEE International Conference on Information Technology: Coding & Computing (ITCC), April 28-30, 2003, Las Vegas, Nevada, USA, pp. 415-419 pdf
[C19]. E. Sakkopoulos, A. Tsakalidis “Utilizing Complementary Know-How: Advanced Fine Arts meeting Information Technology to provide a Virtual University for artists - students and alumni”, in the proceedings of ACM SIGUCCS User Services conference 2002, November 22, 2002, Providence, Rhode Island, USA, pp. 122-129 pdf
[C18]. Y. Panagis, E. Sakkopoulos, S. Sirmakessis, A. Tsakalidis, G. Tzimas, “Discovering Re-Usable Design Solutions in Web Conceptual Schemas: Metrics and Methodology”, in the 5th International Conference of Web Engineering 2005 (ICWE), LNCS 3579, pp. 545-556 pdf
[C17]. E. Sakkopoulos, S. Sirmakessis, A. Tsakalidis, G. Tzimas, “A Methodology for Evaluating the Personalization Conceptual Schema of a Web Application”, in the 11th International Conference on Human-Computer Interaction 2005 (HCII 2005), 22-27/7/2005, Las Vegas, USA, URL: http://www.hci.gr/files/hci2005/Tzimas_Conceptual Schema .pdf pdf
[C16]. D. Avramouli, J. Garofalakis, D.J. Kavvadias, Ch. Makris Y. Panagis, E. Sakkopoulos, “Popular Web Hot Spots Identification and Visualization”, in the proceedings of the Fourteenth International ACM World Wide Web Conference 2005 (WWW2005), May 10-14, Chiba, Japan, pp. 912 - 913. pdf
[C15]. J. Garofalakis, E. Sakkopoulos, S. Sirmakessis, A. Tsakalidis “Integrating Adaptive Techniques into Virtual University Learning Environment“, in the proceedings of the IEEE International Conference on Advanced Learning Technologies, September 9- 12, 2002, Kazan Tatarstan, Russia, pp. 28-33 pdf
[C14]. J. Garofalakis, Y. Panagis, E. Sakkopoulos and A. Tsakalidis. "Web Service Discovery Mechanisms: Looking for a Needle in a Haystack?". International Workshop on Web Engineering, "Hypermedia Development & Web Engineering Principles and Techniques: Put them in use.", in conjunction with ACM Hypertext 2004, Santa Cruz, August 10, 2004, URL: http://www.ht04.org/workshops/WebEngineering/HT04WE_Garofalakis.pdf pdf
[C13]. L. Drosos, S. Sioutas, E. Sakkopoulos, S. Sirmakessis. “BDT-Grid: An Efficient Scalable Peer-to-Peer Lookup System for Web Service Discovery”, International Workshop on Peer to Peer and Service Oriented Hypermedia: Techniques and Systems in conjunction with ACM HyperText 2005, in the ACM HT05 Workshop Proceedings, Salzburg, Austria pdf
[C12]. E. Christopoulou, J. Garofalakis, Ch. Makris Y. Panagis, E. Sakkopoulos, A. Tsakalidis, “Automating Restructuring of Web Applications“, ACM Hypertext 2002, June 11-15, 2002, College Park, Maryland, USA., ACM 1-58113-477-0/02/0006 pdf
[C11]. P. Adamopoulou, D. Kanellopoulos, E. Sakkopoulos, A. Tsakalidis, “Semantic learning interventions using web services technology”, in the proceedings of IASTED 2005 International Conference Web Based Education, (WBE 2005), Web Based Teaching and Learning Technologies track, 2/2005, pp. 528-533 pdf
[C10]. Ch. Makris, Y. Panagis, E. Sakkopoulos and A. Tsakalidis, “An Algorithmic Framework for Adaptive Web Content” (2005), in the International Workshop on Adaptive and Personalized Semantic Web in conjuction with the Sixteenth ACM Conference on HyperText and Hypermedia, proceedings published by Springer Verlag, Studies in Computational Intelligence, S. Sirmakessis ed., Vol. 14, 2006, pp. 1-10 pdf
[C9]. A. Liopa-Tsakalidis, P. Barouchas, A. Koulopoulos, E. Sakkopoulos, G. Tzimas, L. Panagiotopoulos, “FloatNet: An Intelligent Environment for Tobacco Transplants Production”, in the proceedings of ITAFE05 - “International Congress on Information Technologies in Agriculture, Food and Environment”, 2005 pdf
[C8]. V. Diamadopoulou, Y. Panagis, E. Sakkopoulos and Ch. Makris, “QoS enhanced Web Service selection techniques”, International Workshop on Peer to Peer and Service Oriented Hypermedia: Techniques and Systems in conjunction with ACM HyperText 2005, in the ACM Workshop HT05 Proceedings, Salzburg, Austria pdf
[C7]. E. Christopoulou, J. Garofalakis, Ch. Makris, Y. Panagis, E. Sakkopoulos, A. Tsakalidis “Techniques and Metrics for Improving Website Structure“, in the proceedings of the ACM World Wide Web Conference 2003, May 20-24, 2003, Budapest, Hungary, pp. 289-290. pdf
[C6]. S. Angeletou, K. Bovilas, M. Giannakopoulos, E. Sakkopoulos, S. Sirmakessis, A. Tsakalidis, I. Tsaknakis “Exploiting Internet & Multimedia Technologies to Advance Educational Process“, 6th International Conference on Computer Based Learning in Science 2003, 5-10 July 2003, Nicosia, Cyprus, pp. 489-497 pdf
[C5]. S. Sioutas, Ch. Makris G. Lagogiannis, E. Sakkopoulos, K. Tsichlas, V. Delis, A. Tsakalidis. “Temporal Selection Queries in Video Databases”, 3rd International Workshop on Data and Document Engineering (MDDE 2003), in the workshop proceedings of the 29th VLDB Conference, 2003 pdf
[C4]. J. Garofalakis, E. Sakkopoulos, S. Sirmakessis, A. Tsakalidis “Designing an Adaptive Virtual University“, International Conference on Information Communication Technologies in Education, July 17-19, 2002, Samos, Greece - 069/310302, pp. 29-37.
[C3]. Bovilas, K., Kanta, A., Makris, C., Tsaknakis, J., A. Tsakalidis, Prentzas, J., E. Sakkopoulos, Sioutas, S., & Vassiliadis, B. (2000). “The Eurydices System: Objectives and Services”, World Conference on the WWW and Internet, 2000(1), pp. 63-68. pdf
[C2]. Bovilas K., Kanta A., Makris C., Piskopos N., Sakkopoulos E., Sioutas S., Tsakalidis A., Tsaknakis J., Vassiliadis B. “Supporting Virtual Classrooms through Extranet technology: the Eurydices system”, in the Proceedings of World Conference on Educational Multimedia, Hypermedia and Telecommunications 2000(1), Montreal, Quebec, Canada, June 26 - July 1 2000, pp. 1834.
[C1]. C. Bouras, P. Destounis, J. Garofalakis, A. Gkamas, G. Sakalis, B. Sakkopoulos, J. Tsaknakis, Th Tsiatsos, "Efficient Data Management to support Educational Activities" in the Proceedings of International Workshop ICL '99 : Interactive Computer aided Learning - Tools and Application, Villach / Austria 6-8 October 1999

Greek Refereed Conference (Count: 3)

[CG 3]. Vassilios Chrissikopoulos, George Papaloukopoulos, Evangelos Sakkopoulos, Spyros Sioutas, “Design and Implementation Aspects of a Novel Java P2P Simulator with GUI”, 12th Panhellenic Conference on Informatics, 2008, ΙΕΕΕ Proceedings, pp. 83-87 pdf

[CG 2]. Yannis Plegas, Evangelos Sakkopoulos, and Athanasios Tsakalidis, “Augmenting semantic queries using Personalization techniques”, in the proceedings of 11th Panhellenic conference on informatics PCI, 2007 pdf

[CG 1]. L. Drossos, B. Vassiliadis, E. Sakkopoulos, K. Votis, A. Stefani, A. Tsakalidis, M. Xenos, S. Likothanassis, “On the Personalization of an E-learning Environment in Higher Education using Graphs”, in the proceedings of 10th Panhellenic conference on informatics PCI10, 2005, pp. 270-279 pdf

Technical Reports (Count: 4) the Personalization of an E-learning Environment in Higher Education using Graphs”, in the proceedings of 10th Panhellenic conference on informatics PCI10, 2005, pp. 270-279

Technical Reports (Count: 4)nt: 4)

[Τ4]. Ch. Makris Y. Panagis, E. Sakkopoulos, and A. Tsakalidis, “Efficient search algorithms for large scale web service data”, Technical Report No. __2004/09/01__, Research Academic Computer Technology Institute, 21/9/2004
[Τ3]. Ch. Makris Y. Panagis, E. Sakkopoulos, and A. Tsakalidis, “Category Ranking for Personalized Search”, Technical Report No. __2005/03/03__, Research Academic Computer Technology Institute, 28/3/2005
[Τ2]. Ch. Makris, Y. Panagis, K. Papakonstantinou, E. Sakkopoulos, A. Tsakalidis, Efficient Algorithms for Quality based Web Service Selection, Technical Report No. __2005/12/03__, Research Academic Computer Technology Institute, 12/2005
[Τ1]. P. Adamopoulou, E. Sakkopoulos and A. Tsakalidis, Resource based Online eService Selection, Technical Report No. __2005/12/04__, Research Academic Computer Te

International Refereed Journals (submitted manuscripts) (Count: 3)

J.	Data & Knowledge Engineering, Journal Systems and Software, Journal of Computer and Network Applications

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ACADEMIC TEACHING

1.                  teaching at university AND TEI level

1.1              University of Patras

Adjoint Assistant Professor (407/80) in Computer Engineering and Informatics (2006-currently)

o                “Advanced Information Systems” (undergraduate level), since 2006 winter semester (undergraduate level) (Modeling, Design and Programming Advanced Information Systems, Teaching & Laboratories in Computer Engineering and Informatics Dept, School of Polytechnic, University of Patras.

o                ”Object oriented programming II” (C++, programming techniques & design patterns) in 2006-2007 winter semester (undergraduate level), Teaching & Laboratories in Computer Engineering and Informatics Dept, School of Polytechnic, University of Patras.

o                “Object oriented programming I” (programming with JAVA) in 2006-2007, 2007-2008, 2008-2009 spring semester (undergraduate level), Teaching & Laboratories in Computer Engineering and Informatics Dept, School of Polytechnic, University of Patras.

1.2            University of Central Greece (since 2007)

Adjoint Assistant Professor (407/80) in Computer Engineering and Informatics (2007-2010 winter)

                Internet Technologies and Applications (undergraduate level) in 2007-2010 winter semester

1.3              University of Peloponesse

Adjoint Lecturer (407/80) in Computer Engineering and Informatics (2007-2008 winter)

a) Mobile programming - e-Bussiness (undergraduate level) in 2007-2008 winter semester

b) Web design and programming (undergraduate level) in 2007-2008 winter semester

1.4             Higher Technological Educational Institute of Patras (TEI PATRAS)

Adjoint Assistant Professor (2006 – 2007: 1 academic year)

o                “Advanced Applications of Information Systems – UML, Programming Techniques, Web Information Systems, Web Services, Semantic Web, ERP” (graduate level), Teaching in Computer Science applied to Management and Finance Dept. (2006-2007)

Adjoint Laboratory Assistant (2003 – 2007: 3.5 academic years)

o                “Advanced Applications of Information Systems – UML, Programming Techniques, Web Information Systems, Web Services, Semantic Web, ERP” (graduate level), Laboratory at the Computer Science applied to Management and Finance Dept. (2006-2007)

o                “Internet Technologies and Applications for tourism” (graduate level), Laboratory at the Tourism Management Dept . (2003-2006: 2.5 academic years)

o        “Computer Science Applications” (graduate level), Laboratory at the Tourism Management Dept . (2003-2006: 2 academic years)

o        “Introduction to Computer Science for Business Administration” (graduate level), Laboratory at the Business Administration and Planning Dept. (2003 – 2004: 1 academic semester)



1.5              Athens School of Fine Arts (University)

Adjoint Scientific - Teaching Collaborator (2000–2005: 5 academic semesters)

o        “Internet Architecture, Web Protocols, and Web Programming” (post-graduate), Teaching and Laboratory in the postgraduate school “Digital Fine Arts” of Athens School of Fine Arts and University of Patras. (2000-2001 (spring semester), 2002-2003, 2003-2004 (winter semester), 2004-2005 (winter semester))
URL: http://astarti.asfa.gr

o        “Web Application Development Methods” (post-graduate level), Teaching in the postgraduate school “Digital Fine Arts” of Athens School of Fine Arts and University of Patras. (2001-2002 (spring semester), 2002-2003 )

o        Postgraduate Theses co-supervision in the postgraduate school “Digital Fine Arts” of Athens School of Fine Arts and University of Patras under Assoc. Prof. G. Harvalias

1.6              Panteion University

Adjoint Scientific - Teaching Collaborator (2005 – 2006: 1 academic semester)

o        “Introduction to Web Technologies and Applications” (postgraduate level), Teaching and Laboratory in the postgraduate school “Technical Applications and Socio-psychological Approaches to Emerging Societies” of Panteion University, Computer Technology Institute (www.cti.gr) and Higher Technological Educational Institute of Mesolongi
URL: http://www.panteion.gr/gr/tmimata/psycho/dk/main.htm

1.7              University of Patras

Teaching Assistant Computer Engineering and Informatics (since 2001)

o                “Advanced Information Systems” (undergraduate level), since 2002
Teaching Assistance & Laboratories in Computer Engineering and Informatics Dept, School of Polytechnic, University of Patras. Supervisor: Prof. Α. Tsakalidis.
URL: http://mmlab.ceid.upatras.gr/courses/ais_site

o        “Internet Technologies ” (undergraduate level), Teaching Assistance & Laboratories in Computer Engineering and Informatics Dept, School of Polytechnic, University of Patras. Supervisor: Assoc. Prof J. Garofalakis.
URL: http://mmlab.ceid.upatras.gr/courses/it_site

o         “Principles of Programming Languages” (undergraduate level) since 2001 up to 2003, Laboratories in Computer Engineering and Informatics Dept, School of Polytechnic, University of Patras. Supervisor: Assoc. Prof J. Garofalakis.

o                “Human Computer Interaction” (undergraduate level) in 2001, Teaching Assistance in Computer Engineering and Informatics Dept, School of Polytechnic, University of Patras. Supervisor: Prof. Α. Tsakalidis, Assist. Prof. S. Sirmakessis.

2.                  Teaching books (full material available only in Greek language)

o        “Advanced Information Systems” (published since 2003) for the 5^th and 4^th last year students of Computer Engineering and Informatics Dept., School of Engineering, University of Patras. University of Patras Press.

o        “Internet Technologies” (published since 2001) for the 5^th and 4^th last year students of Computer Engineering and Informatics Dept., School of Engineering, University of Patras. University of Patras Press.

o        “Internet Technologies and Applications for Tourism” Laboratory Material for the 4^th semester at Tourism Management Dept, Higher Technological Educational Institute of Patras..

3.    Graduate and Postgraduate Theses co-supervision with Professors Tsakalidis, Garofalakis, Makris in Computer Engineering and Informatics Dept, School of Polytechnic, University of Patras. (2001-UnderGraduate Student Theses guided Count: 49,

Post-Graduate Master Theses Count: 12

UnderGraduate Student Theses at UCG.GR guided Count: 2

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Date of Last Edit: 23/11/2009

[J1].].	E. Sakkopoulos, M. Lytras, and A. Tsakalidis, (2006), “Adaptive Mobile Web Services Facilitate Communication and Learning Internet Technologies”, in IEEE Transactions on Education, special issue on "Mobile Technology for Education" edited by Keng Siau, Vol 42, No 2, May 2006, pp. 208-215 (Impact factor: 1.400) pdf
[J2].	L. Drosos, E. Sakkopoulos, S. Sioutas, S. Sirmakessis (2006), “Balanced Distributed Web Service Lookup System”, in J. Network and Computer Applications, Elsevier Science, Vol 32, No 2, pp.149-162 (impact factor: 1.000) pdf
[J3].	J. Garofalakis, Y. Panagis, E. Sakkopoulos and A. Tsakalidis (2006), Contemporary Web Service Discovery Mechanisms, Journal of Web Engineering, S. Christodoulou ed., special issue “Web Engineering: A Reference model, development aspects and the hypermedia perspective”, Rinton Press, Vol.5, No3, September 2006, pp 265-290 (impact factor: 0,412) pdf
[J4].	Ch. Makris , Y. Panagis, E. Sakkopoulos, and A. Tsakalidis,(2007), “Category ranking for personalized search, in the Data and Knowledge Engineering Journal (DKE), Elsevier Science, Volume 60, Issue 1 , January 2007, Pages 109-125 (impact factor: 1.480) pdf
[J5].	V. Diamadopoulou, Y. Panagis, E. Sakkopoulos, and Ch. Makris (2006), “Techniques to support Web Service selection and consumption with QoS characteristics”, in the J. Network and Computer Applications, Elsevier Science, Vol 32, No 2, pp. 108-130 (impact factor: 1.000) pdf
[J6].	Ch. Makris Y. Panagis, E. Sakkopoulos, and A. Tsakalidis, (2006) “Efficient and adaptive discovery techniques of web services handling large data sets”, in J. Systems and Software, Elsevier Science, Vol 79, No. 4, pp 480-495 (impact factor: 1.241) pdf
[J7].	E. Sakkopoulos, D. Kanellopoulos and A. Tsakalidis (2006), “Semantic mining and web service discovery techniques for media resources management”, in Int. J. Metadata, Semantics and Ontologies, Vol. 1, No. 1, pp.66–75.(indexed by DBLP) pdf
[J8].	J. Garofalakis, Y. Panagis, E. Sakkopoulos, and A. Tsakalidis (2006), “Optimization mechanism for Web Search Results using Topic Knowledge”, in the International Journal of Knowledge and Learning, Vol. 2 (1&2), pp. 140-153 (indexed by DBLP) pdf
[J9].	L. Drossos, B. Vassiliadis, A. Stefani, M. Xenos, E. Sakkopoulos and A. Tsakalidis (2006), “Introducing ICT in a traditional higher education environment: background, design and evaluation of a blended approach”, in International Journal of Information and Communications Technology Education (IJICTE), Vol. 2, Issue 1, 2006, pp. 65-78 (indexed in the Information Systems Journals) pdf
[J10].	Y. Makripoulias, Ch. Makris, E. Sakkopoulos , Y. Panagis, P. Adamopoulou and A. Tsakalidis, “Towards Ubiquitous Computing with Quality of Web Service support”, in Upgrade, The European Journal for the Informatics Professional, Vol VI, no 5, Oct 2005, pp. 29-34 pdf
[J11].	Liopa-Tsakalidis, E. Sakkopoulos, D. Savvas, A.B. Sideridis and J. Tzimas, (2005), “HydroNet: An Intelligent Hydroponics Web Service Environment”, in the Journal of Neural Parallel and Scientific Computations, Dynamic Publishers, vol. 13, 2005, pp. 15-36. pdf
[J12].	E. Christopoulou, J. Garofalakis, Ch. Makris, Y. Panagis, E. Sakkopoulos, A. Tsakalidis (2003), “Techniques and Metrics for Improving Website Structure“, Journal of Web Engineering, Vol.2 No.1&2 pp. 090-104. (impact factor: 0,412) pdf
[J13].	C. Bouras, P. Destounis, J. Garofalakis, A. Gkamas, G. Sakalis, E. Sakkopoulos, J. Tsaknakis, Th Tsiatsos, “Efficient Web-based open distance learning”, in Journal Telematics and Informatics, Elsevier Science, Vol. 17, Issue 3, 2000, pp. 213-237. (indexed by ISI JCR at publication time and DBLP) pdf
[J14].	C. Bouras, P. Destounis, J. Garofalakis, A. Gkamas, G. Sakalis, E. Sakkopoulos, J. Tsaknakis, Th Tsiatsos, “Efficient Data Management to support Educational Activities”, in International EurODL: European Journal of Open and Distance Learning, ISSN# 1027-5207, 06.12.1999. pdf
[J15].	Konstantinos Markellos, Evangelos Sakkopoulos, Spiros Sirmakessis, Athanasios Tsakalidis “Semantic Web Search for e-Government: The case study of Intrastat”, International Journal of Internet Technologies. Vol. 8, No. 4, 2007 (indexed by DBLP) pdf
[J16].	Y. Panagis, E. Sakkopoulos, S. Sirmakessis, A. Tsakalidis, & G. Tzimas, “Techniques for mining the design of e-government services to enhance end-user experience”, E-Democracy, an International Journal of, Inderscience (indexed by DBLP) . pdf
[J17].	D. Kanellopoulos, E. Sakkopoulos, M. Lytras, & A. Tsakalidis, “Using web-based teaching interventions in computer science courses”, IEEE Transactions on Education, IEEE Nov. 2007, Vol. 50, No. 4, pp. 338-344. (impact factor: 1.400) pdf
[J18].	Poulia Adamopoulou, Evangelos Sakkopoulos, A. Tsakalidis, & M. Lytras, “Resource based Online eService Selection”, Journal of Universal Computer Science (JUCS),Vol. 13, No. 9, 2007, pp. 1138-1156. (impact factor: 0.488) pdf
[J19].	Evangelos Sakkopoulos, Yannis Panagis, Konstantinos Papakonstantinou, & Athanasios Tsakalidis, “Efficient Algorithms for Quality based Web Service Selection”, International Journal of Web Engineering and Technology (IJWET), Inderscience Publishers, Vol. 4, No. 1, 2008, pp. 114-134 (indexed by DBLP) pdf
[J20].	Miltiadis Lytras, Evangelos Sakkopoulos, Patricia Ordonez de Pablos, "Semantic Web and Knowledge Management for the health domain: state of the art and challenges for the Seventh Framework Programme (FP7) of the European Union (2007-2013)", International Journal of Technology and Management (IJTM), Inderscience Publishers, corrected proof, in press (impact factor: 0.526) pdf
[J21].	John Garofalakis, Theodoula Giannakoudi, Evangelos Sakkopoulos, "An Integrated Technique for Web Site Usage Semantic Analysis: the Organ System", Journal of Web Engineering, Vol. 6, No 3, pp. 261-280 (impact factor: 0.412) pdf
[J22].	Laskaridis, G., Markellos, K., Markellou, P., Panayiotaki, A., Sakkopoulos, E. and Tsakalidis, A, "E-Government and Interoperability Issues", International Journal of Computer Science and Network Security, ISSN : 1738-7906, Vol.7, No. 9, Sept 2007, pp. 28-38 pdf
[J23].	S. Sioutas, E. Sakkopoulos, Ch. Makris, B. Vassiliadis, A. Tsakalidis and P. Triantafillou, “Dynamic Web Service discovery architecture based on a novel peer based overlay network”, Journal of Systems and Software, in Press, (ISI Science Citation Index (SCI) Impact Factor: 1,241) pdf
[J24]	A. D. Antoniou, J. Garofalakis, C. Makris, Y. Panagis and E. SakkopoulosA, “Context-similarity based hotlinks assignment: Model, metrics and algorithm.”, Data and Knowledge Engineering (DKE), in press available online, (ISI Science Citation Index (SCI) Impact Factor: 1,480) doi:10.1016/j.datak.2009.04.007

[B1].	J. Garofalakis, T. Giannakoudi, Y. Panagis, E. Sakkopoulos, A. Tsakalidis, “Semantic Knowledge Mining Techniques for Ubiquitous access media usage analysis”, book chapter in Ubiquitous and Pervasive Knowledge and Learning Management: Semantics, Social Networking and New Media to their full potential, Eds M.D. Lytras, Ambjorn Naeve, in press press pdf
[B2].	Ch. Makris, Y. Panagis, E. Sakkopoulos, and A. Tsakalidis, (2007) “IT Application Development with Web Services”, book chapter in the Encyclopedia of Information Science and Technology, 2nd Edition, edited by Dr. Mehdi Khosrow-Pour, Idea Group Inc., in press (corrected proof) roof) pdf
[B3].	Y. Panagis, E. Sakkopoulos, S. Sioutas and A. Tsakalidis, (2006) “Web Service Integration and Management Strategies for Large Scale Datasets”, book chapter in ed. Prof. Zongmin Ma, Database Modelling for Industrial Data Management: Emerging Technologies and Applications, Idea Group Inc., pp. 217-243. -243. pdf

[C29]	Sioutas, S., Papaloukopoulos, G., Sakkopoulos, E., Tsichlas, K., Manolopoulos, Y., "A novel Distributed P2P Simulator Architecture: D-P2P-Sim", in CIKM 2009 (the 18th ACM Conference on Information and Knowledge Management) as demonstration, Hong Kong, November 2-6, 2009 (to appear)
[C28].	Makris, Ch., Panagis, Y., Plegas, Y., Sakkopoulos, E., ”An integrated Web System to facilitate personalized web searching algorithms”, ACM 23rd Annual ACM Symposium on Applied Computing (ACM SAC 2008), Track on Web Technologies, Ceará, Brazil, March 16 - 20, 2008, pp. 2397-2402, pdf
[C27]	John Garofalakis, John Giannakou, Theodoula Giannakoudi, Evangelos Sakkopoulos: “Promo: Novel metrics that combine hits and accessibility criteria in order to promote important content and links”, Euro American Conference on Telematics and Information Systems, ACM, 2007, ISBN # 978-1-59593-598-4 pdf
[C26].	John Garofalakis, Theodoula Giannakoudi, Evangelos Sakkopoulos , “An integrated technique for Web Site Usage Semantic Analysis: The ORGAN System”, International Workshop Logging Traces of Web Activity: The Mechanics of Data Collection in conjunction with the WWW 2006, in the Workshop Proceedings, Edinburg, Scotland, May 23, 2006 pdf
[C25].	K. Papakonstantinou, E. Sakkopoulos, Y. Panagis, Ch. Makris, A. Tsakalidis, “Web Service Workflow Selection using Measured Variation in Operating System and Network Resource Consumption”, International Workshop on Architectures, Models and Infrastructures to Generate Semantics in Peer to Peer and Hypermedia Systems in conjunction with ACM HyperText 2006, in the ACM HT06 Workshop Proceedings, Odense, Denmark, August 23, 2006 URL: http://mmlab.ceid.upatras.gr/people/sakkopoulos/conf/ht06.pdf pdf
[C24].	T. Katsimpa, Y. Panagis, E. Sakkopoulos, G. Tzimas, A. Tsakalidis, “Application Modeling using Reverse Engineering Techniques”, in the proceedings of the 2006 21st Annual ACM Symposium on Applied Computing (ACM SAC 2006), Track on Model Transformation, Dijon, France, April 23 -27, 2006, pp. 1250-1255 pdf
[C23].	Ch. Makris, E. Sakkopoulos, S. Sioutas, P. Triantafillou, A. Tsakalidis, B. Vassiliadis, "NIPPERS: Network of InterPolated PeERS for Web Service Discovery", in the proceedings of the 2005 IEEE International Conference on Information Technology: Coding & Computing (IEEE ITCC 2005), Track Next Generation Web and Grid Systems, 2005 in Las Vegas, USA, Vol. 2, pp. 193-198 pdf
[C22].	J. Garofalakis, Th. Matsoukas, Y. Panagis, E. Sakkopoulos, A. Tsakalidis. “Personalization Techniques for Web Search Results Categorization”, in the proceedings of the 2005 IEEE International Conference on e-Technology, e-Commerce and e-Service (IEEE EEE 2005), 29 March - 1 April 2005 in Hong Kong, China, pp. 148-151 pdf
[C21].	E. Dimopoulos, A. Panousis, E. Sakkopoulos, A. Tsakalidis, “WiFiAdmin: An Intelligent Web-based Management Environment for Wireless Networks”, in the proceedings of IEEE International Conference on Information Technology and Applications 2005 (IEEE ICITA 2005), Sydney 4-7/7/2005, pp. 508-513 pdf
[C20].	J. Garofalakis, E. Sakkopoulos, S. Sirmakessis, A. Tsakalidis “Integrating Adaptive Techniques with Web Services“,in the proceedings of the 2003 IEEE International Conference on Information Technology: Coding & Computing (ITCC), April 28-30, 2003, Las Vegas, Nevada, USA, pp. 415-419 pdf
[C19].	E. Sakkopoulos, A. Tsakalidis “Utilizing Complementary Know-How: Advanced Fine Arts meeting Information Technology to provide a Virtual University for artists - students and alumni”, in the proceedings of ACM SIGUCCS User Services conference 2002, November 22, 2002, Providence, Rhode Island, USA, pp. 122-129 pdf
[C18].	Y. Panagis, E. Sakkopoulos, S. Sirmakessis, A. Tsakalidis, G. Tzimas, “Discovering Re-Usable Design Solutions in Web Conceptual Schemas: Metrics and Methodology”, in the 5th International Conference of Web Engineering 2005 (ICWE), LNCS 3579, pp. 545-556 pdf
[C17].	E. Sakkopoulos, S. Sirmakessis, A. Tsakalidis, G. Tzimas, “A Methodology for Evaluating the Personalization Conceptual Schema of a Web Application”, in the 11th International Conference on Human-Computer Interaction 2005 (HCII 2005), 22-27/7/2005, Las Vegas, USA, URL: http://www.hci.gr/files/hci2005/Tzimas_Conceptual Schema .pdf pdf
[C16].	D. Avramouli, J. Garofalakis, D.J. Kavvadias, Ch. Makris Y. Panagis, E. Sakkopoulos, “Popular Web Hot Spots Identification and Visualization”, in the proceedings of the Fourteenth International ACM World Wide Web Conference 2005 (WWW2005), May 10-14, Chiba, Japan, pp. 912 - 913. pdf
[C15].	J. Garofalakis, E. Sakkopoulos, S. Sirmakessis, A. Tsakalidis “Integrating Adaptive Techniques into Virtual University Learning Environment“, in the proceedings of the IEEE International Conference on Advanced Learning Technologies, September 9- 12, 2002, Kazan Tatarstan, Russia, pp. 28-33 pdf
[C14].	J. Garofalakis, Y. Panagis, E. Sakkopoulos and A. Tsakalidis. "Web Service Discovery Mechanisms: Looking for a Needle in a Haystack?". International Workshop on Web Engineering, "Hypermedia Development & Web Engineering Principles and Techniques: Put them in use.", in conjunction with ACM Hypertext 2004, Santa Cruz, August 10, 2004, URL: http://www.ht04.org/workshops/WebEngineering/HT04WE_Garofalakis.pdf pdf
[C13].	L. Drosos, S. Sioutas, E. Sakkopoulos, S. Sirmakessis. “BDT-Grid: An Efficient Scalable Peer-to-Peer Lookup System for Web Service Discovery”, International Workshop on Peer to Peer and Service Oriented Hypermedia: Techniques and Systems in conjunction with ACM HyperText 2005, in the ACM HT05 Workshop Proceedings, Salzburg, Austria pdf
[C12].	E. Christopoulou, J. Garofalakis, Ch. Makris Y. Panagis, E. Sakkopoulos, A. Tsakalidis, “Automating Restructuring of Web Applications“, ACM Hypertext 2002, June 11-15, 2002, College Park, Maryland, USA., ACM 1-58113-477-0/02/0006 pdf
[C11].	P. Adamopoulou, D. Kanellopoulos, E. Sakkopoulos, A. Tsakalidis, “Semantic learning interventions using web services technology”, in the proceedings of IASTED 2005 International Conference Web Based Education, (WBE 2005), Web Based Teaching and Learning Technologies track, 2/2005, pp. 528-533 pdf
[C10].	Ch. Makris, Y. Panagis, E. Sakkopoulos and A. Tsakalidis, “An Algorithmic Framework for Adaptive Web Content” (2005), in the International Workshop on Adaptive and Personalized Semantic Web in conjuction with the Sixteenth ACM Conference on HyperText and Hypermedia, proceedings published by Springer Verlag, Studies in Computational Intelligence, S. Sirmakessis ed., Vol. 14, 2006, pp. 1-10 pdf
[C9].	A. Liopa-Tsakalidis, P. Barouchas, A. Koulopoulos, E. Sakkopoulos, G. Tzimas, L. Panagiotopoulos, “FloatNet: An Intelligent Environment for Tobacco Transplants Production”, in the proceedings of ITAFE05 - “International Congress on Information Technologies in Agriculture, Food and Environment”, 2005 pdf
[C8].	V. Diamadopoulou, Y. Panagis, E. Sakkopoulos and Ch. Makris, “QoS enhanced Web Service selection techniques”, International Workshop on Peer to Peer and Service Oriented Hypermedia: Techniques and Systems in conjunction with ACM HyperText 2005, in the ACM Workshop HT05 Proceedings, Salzburg, Austria pdf
[C7].	E. Christopoulou, J. Garofalakis, Ch. Makris, Y. Panagis, E. Sakkopoulos, A. Tsakalidis “Techniques and Metrics for Improving Website Structure“, in the proceedings of the ACM World Wide Web Conference 2003, May 20-24, 2003, Budapest, Hungary, pp. 289-290. pdf
[C6].	S. Angeletou, K. Bovilas, M. Giannakopoulos, E. Sakkopoulos, S. Sirmakessis, A. Tsakalidis, I. Tsaknakis “Exploiting Internet & Multimedia Technologies to Advance Educational Process“, 6th International Conference on Computer Based Learning in Science 2003, 5-10 July 2003, Nicosia, Cyprus, pp. 489-497 pdf
[C5].	S. Sioutas, Ch. Makris G. Lagogiannis, E. Sakkopoulos, K. Tsichlas, V. Delis, A. Tsakalidis. “Temporal Selection Queries in Video Databases”, 3rd International Workshop on Data and Document Engineering (MDDE 2003), in the workshop proceedings of the 29th VLDB Conference, 2003 pdf
[C4].	J. Garofalakis, E. Sakkopoulos, S. Sirmakessis, A. Tsakalidis “Designing an Adaptive Virtual University“, International Conference on Information Communication Technologies in Education, July 17-19, 2002, Samos, Greece - 069/310302, pp. 29-37.
[C3].	Bovilas, K., Kanta, A., Makris, C., Tsaknakis, J., A. Tsakalidis, Prentzas, J., E. Sakkopoulos, Sioutas, S., & Vassiliadis, B. (2000). “The Eurydices System: Objectives and Services”, World Conference on the WWW and Internet, 2000(1), pp. 63-68. pdf
[C2].	Bovilas K., Kanta A., Makris C., Piskopos N., Sakkopoulos E., Sioutas S., Tsakalidis A., Tsaknakis J., Vassiliadis B. “Supporting Virtual Classrooms through Extranet technology: the Eurydices system”, in the Proceedings of World Conference on Educational Multimedia, Hypermedia and Telecommunications 2000(1), Montreal, Quebec, Canada, June 26 - July 1 2000, pp. 1834.
[C1].	C. Bouras, P. Destounis, J. Garofalakis, A. Gkamas, G. Sakalis, B. Sakkopoulos, J. Tsaknakis, Th Tsiatsos, "Efficient Data Management to support Educational Activities" in the Proceedings of International Workshop ICL '99 : Interactive Computer aided Learning - Tools and Application, Villach / Austria 6-8 October 1999

[Τ4].	Ch. Makris Y. Panagis, E. Sakkopoulos, and A. Tsakalidis, “Efficient search algorithms for large scale web service data”, Technical Report No. __2004/09/01__, Research Academic Computer Technology Institute, 21/9/2004
[Τ3].	Ch. Makris Y. Panagis, E. Sakkopoulos, and A. Tsakalidis, “Category Ranking for Personalized Search”, Technical Report No. __2005/03/03__, Research Academic Computer Technology Institute, 28/3/2005
[Τ2].	Ch. Makris, Y. Panagis, K. Papakonstantinou, E. Sakkopoulos, A. Tsakalidis, Efficient Algorithms for Quality based Web Service Selection, Technical Report No. __2005/12/03__, Research Academic Computer Technology Institute, 12/2005
[Τ1].	P. Adamopoulou, E. Sakkopoulos and A. Tsakalidis, Resource based Online eService Selection, Technical Report No. __2005/12/04__, Research Academic Computer Te