About Me


Curriculum Vitae


I am a Professor of Software Engineering and Object-Oriented Design in the Department of Applied Informatics at the University Macedonia, Thessaloniki, Greece. Currently, I have the honor to be the Dean of the School of Information Sciences and I also serve as Head of the Department of Applied Informatics. I am also proud to serve as an Associate Editor for the Journal of Systems and Software and for IET Software

My research interests include software maintenance and evolution, software quality assessment and Technical Debt in particular. Please have a look at the Publications for a list of our group papers. Relevant citations can be found on the Google Scholar profile.
Our Software Engineering Group is part of the Software and Data Engineering Laboratory of the Department of Applied Informatics.
Our group is involved in a number of research projects in software engineering funded by the European Commission or by national funds in which we collaborate with several outstanding research groups in Europe. Please have a look at the Projects for detailed information about active ongoing research efforts.
I teach various software engineering and programming courses, including "Software Engineering", "Advanced Software Engineering", "Object-Oriented Programming" and "Procedural Programming" The courses are listed under Courses

I received the Diploma in Electrical Engineering from the School of Electrical and Computer Engineering of the Aristotle University of Thessaloniki in 1996. I received the Ph.D. degree from the Computer Science Department of the Aristotle University of Thessaloniki in 2000 and I am grateful that I had the opportunity to work under the supervision of Professor Spiridon Nikolaidis and Professor Ioannis Tsoukalas.

I was fortunate to collaborate with many excellent students over the years. Two of them have graduated with a B.Sc, M.Sc. and a Ph.D. from the University of Macedonia and I am glad that I had the opportunity to be their supervisor. Nikolaos Tsantalis is currently an Associate Professor at Concordia University and one of the most talented and prolific researchers worldwide in the field of software maintenance and refactorings. Theodore Chaikalis is a senior software engineer at Intrasoft S.A. and an excellent instructor at the University of Macedonia and the Hellenic Open University.

Please feel free to contact me in case you are interested in software engineering research or if you would like to obtain more information regarding our current and past research activities.

Undergraduate

Object-Oriented Programming

An Introduction to object-oriented programming through Java 3rd Semester (winter)
with Stelios Xinogalos

Software Engineering

An Introduction to software engineering focusing on requirements, architecture, design and testing 4th Semester (summer)

Procedural Programming

An Introduction to the procedural programming paradigm through C 1st Semester (winter)
with M. Satratzemi, I. Sakellariou and S. Xinogalos

Graduate

Advanced Software Engineering

Object-Oriented Design Principles, Patterns, Code Smells, Refactorings and Technical Debt Winter Semester

Available to the specialization of Computer Science and Technology, MSc on Applied Informatics

Object-Oriented Software Development

A crash-course on software development employing Java Winter Semester
with S. Xinogalos

Available to the specialization of Business Computing, MSc on Applied Informatics

Computational Thinking and Software

An introduction to the algorithmic way of thinking and software development Summer Semester
with M. Satratzemi and S. Xinogalos

Available to the MSc on Law and Informatics

Projects

SDK4ED

Software Development ToolKit for Energy Optimization and Technical Debt Elimination

EXA2PRO

Enhancing Programmability and boosting Performance Portability for Exascale Computing Systems

WMS-AR

Innovative Warehouse Management System with Augmented Reality and Visual Inventory Inspection technologies in collaboration with the Department of Computer Science of the Aristotle University of Thessaloniki (prof. Ioannis Stamelos)

Drones in a WMS

News & Awards

Very glad to receive together with Prof. Nikolaos Tsantalis the IEEE TCSE Most Influential Paper (MIP) award by SANER'2019 for the CSMR 2009 paper entitled “Identification of Extract Method Refactoring Opportunities”. Many thanks to the selection committee for this honour.

Special Recognition Award for an Influential Tool at SANER 2018 (25th IEEE International Conference on Software Analysis, Evolution and Reengineering) coauthored with Prof. Nikolaos Tsantalis and Dr. Theodoros Chaikalis. Citation of the award certificate: "The special recognition award recognizes JDeodorant as one of the leading and most widely used tools for code refactoring". Awarded during the SANER conference at Campobasso, Italy, March 20-23, 2018. Many thanks to the selection committee for this honour.

Keynote Speaker at the 7th workshop on Software Quality Analysis, Monitoring, Improvement, and Applications (SQAMIA’2018), Novi Sad, Serbia, August 27-30, 2018. Presentation title: Technical Debt: The metaphor, the challenges and the opportunities. Many thanks to the organization committee for the kind invitation.

Included in a list of 15 top scholars in the field of systems and software engineering. This ranking has been published in: Wong, W.E., Tse, T.H., Glass, R.L., Basili, V.R., Chen, T.Y., An assessment of systems and software engineering scholars and institutions (2003–2007 and 2004–2008), The Journal of Systems and Software (2010), doi:10.1016/j.jss.2010.09.036

Best Paper Award at the 17th International Conference on Software Reuse (ICSR 2018), Madrid, Spain, May 21-23, 2018 for paper "Reusability Index: A Measure for Assessing Software Assets Reusability"

Best Paper Award at the 21st Evaluation and Assessment in Software Engineering Conference (EASE 2017), Karlskrona, Sweden, June 15-16, 2017 for paper "A Method for Assessing Class Change Proneness"

Best Paper Award at the 7th Balkan Conference in Informatics (BCI’2015), Craiova, Romania, September 2-4, 2015 for paper "A Taxonomy of Evaluation Approaches in Software Engineering"

Best Paper Award at the 7th International Conference on the Quality of Information and Communications Technology (QUATIC'2010), Porto, Portugal, September 29-October 2, 2010 for paper "Investigating the Evolution of Bad Smells in Object-Oriented Code"

Books     Book Chapters     Journals     Conferences

Books

  1. A. Chatzigeorgiou, Object-Oriented Design, UML, Principles, Patterns and Heuristics (in Greek), Klidarithmos, Athens, 2005.
  2. Alexander Chatzigeorgiou, Software Development based on the ICONIX Methodology, Hellenic Open University, Study Material for the Course "Design and Management of Software", Patras, 2008.
  3. Alexander Chatzigeorgiou (in collaboration with E. Tambouris), Software Design, Hellenic Open University, 2014.
  4. E. S. Roberts, The Art and Science of Java, Translated in Greek (with prof. G. Stephanides), Klidarithmos, Athens, 2008.
  5. E. S. Roberts, The Art and Science of C, Translated in Greek (with prof. G. Stephanides), Klidarithmos, Athens, 2004.
  6. E. Lervik and V. B. Havdal, Java the UML way, Translated in Greek (with prof. G. Stephanides), Klidarithmos, Athens, 2004.
  7. B. A. Forouzan, Foundations of Computer Science, Translated in Greek (with prof. G. Stephanides), Klidarithmos, Athens, 2003.

Book Chapters

  1. S. Nikolaidis, A. Chatzigeorgiou, Circuit-Level Low-Power Design, in Designing CMOS Circuits for Low Power, Kluwer Academic Publishers, 2002.
  2. A. Chatzigeorgiou, S. Nikolaidis, Reducing Power Consumption in Memories, in Designing CMOS Circuits for Low Power, Kluwer Academic Publishers, 2002.

Journals

  1. P. Kyriakakis, A. Chatzigeorgiou, S. Xynogalos, and A. Ampatzoglou, “Exploring the Frequency and Change Proneness of Dynamic Feature Pattern Instances in PHP Applications”, Science of Computer Programming, 2019.
  2. A. Ampatzoglou, S. Bibi, P. Avgeriou, M. Verbeek, and A. Chatzigeorgiou, “Identifying, Categorizing and Mitigating Threats to Validity in Software Engineering Secondary Studies”, Information and Software Technology, 106, 2019.
  3. D. Feitosa, A. Ampatzoglou, P. Avgeriou, A. Chatzigeorgiou, and E. Y. Nakagawa, “What can Violations of Good Practices tell about the Relationship between GoF Patterns and Run-time Quality Attributes?”, Information and Software Technology, 105, 2019.
  4. S. Xinogalos, M. Satratzemi, A. Chatzigeorgiou and D. Tsompanoudi, “Factors affecting students’ performance in Distributed Pair Programming”, Journal of Educational Computing Research, accepted for publication, 2017
  5. M.E. Paschali, A. Ampatzoglou, S. Bibi, A. Chatzigeorgiou, I. Stamelos,“Reusability of Open Source Software across Domains: A Case Study”, Journal of Systems and Software, vol. 134, December 2017, pp. 211-227.
  6. T. Amanatidis, A. Chatzigeorgiou and A. Ampatzoglou, “The relation between technical debt and corrective maintenance in PHP web applications”, Information and Software Technology, 2017, vol. 90, October 2017, pp. 70-74
  7. E.M. Arvanitou, A. Ampatzoglou, A. Chatzigeorgiou, M. Galster, and P. Avgeriou, “A Mapping Study on Design-Time Quality Attributes and Metrics”, Journal of Systems and Software, 127(5):52–77, 2017
  8. S. Charalampidou, A. Ampatzoglou, A. Chatzigeorgiou, A. Gkortzis and P. Avgeriou, "Identifying Extract Method Refactoring Opportunities based on Functional Relevance”, IEEE Transactions on Software Engineering, vol. 43, issue 10, December 2016, pp. 954-974.
  9. E. M. Arvanitou, A. Ampatzoglou, A. Chatzigeorgiou, and P. Avgeriou, “Software Metrics Fluctuation: A Property for Assisting the Metric Selection Process”, Information and Software Technology, 72(4), April 2016, pp. 110-124. Audio Slides
  10. T. Amanatidis and A. Chatzigeorgiou, "Studying the Evolution of PHP Web Applications", Information and Software Technology, 72(4), April 2016, pp. 48-67. Audio Slides
  11. K. Petridis, A. Chatzigeorgiou and E. Stiakakis, "A SpatioTemporal Data Envelopment Analysis (S-T DEA) approach: The need to assess evolving units", Annals of Operations Research, 238 (1), pp. 475-496, 2016. DOI: 10.1007/s10479-015-2045-8.
  12. A. Chatzigeorgiou, T. Theodorou, G. Violettas, S. Xinogalos, “Blending an Android development course with software engineering concepts”, Education and Information Technologies, published online, 2015.
  13. A. Ampatzoglou, A. Ampatzoglou, A. Chatzigeorgiou and P. Avgeriou, "The Financial Aspect of Managing Technical Debt: A Systematic Literature Review”, Information and Software Technology, vol. 64, August 2015, pp. 52-73.
  14. A. Ampatzoglou, A. Chatzigeorgiou, S. Charalampidou and P. Avgeriou, “The Effect of GoF Design Patterns on Stability: A Case Study”, IEEE Transactions on Software Engineering, vol. 41, issue 8, Aug. 2015, pp. 781-802.
  15. T. Chaikalis and A. Chatzigeorgiou,“Forecasting Java Software Evolution Trends employing Network Models”, IEEE Transactions on Software Engineering, vol. 41, issue 6, June 2015, pp. 582-602.
  16. T. Chaikalis, A. Chatzigeorgiou and G. Examiliotou, "Investigating the Effect of Evolution and Refactorings on Feature Scattering", Software Quality Journal, vol. 23, no.1, 2015, pp. 79-105.
  17. S. T. Halkidis, A. Chatzigeorgiou and G. Stephanides, “Brief Review of Software Security History with an Emphasis on Efforts Focused at Early Stages of the Software Lifecycle”, Journal of Information Privacy and Security, vol. 10, issue 1, 3-27, 2014, DOI: 10.1080/15536548.2014.912481.
  18. A. Chatzigeorgiou and A. Manakos, "Investigating the Evolution of Code Smells in Object-Oriented Systems", Innovations in Systems and Software Engineering (Springer), vol. 10, issue 1, March 2014, pp. 3-18.
  19. A. Chatzigeorgiou and E. Stiakakis, "Combining Metrics for Software Evolution Assessment by means of Data Envelopment Analysis", Journal of Software Maintenance and Evolution: Research and Practice, vol. 25, issue 3, March 2013, pp. 303-324.
  20. M. Fokaefs, N. Tsantalis, E. Stroulia and A. Chatzigeorgiou, "Identification and Application of Extract Class Refactorings in Object-Oriented Systems", Journal of Systems and Software, vol. 85, issue 10, October 2012, pp. 2241-2260.
  21. Nikolaos Tsantalis, and Alexander Chatzigeorgiou, "Identification of Extract Method Refactoring Opportunities for the Decomposition of Methods," Journal of Systems and Software, vol. 84, issue 10, October 2011, pp. 1757-1782.
  22. A. Chatzigeorgiou and E. Stiakakis, "Benchmarking Library and Application Software with Data Envelopment Analysis", Software Quality Journal, vol. 19, issue 3, September 2011, pp. 553-578.
  23. M. Mouratidou, V. Lourdas, A. Chatzigeorgiou and C. K. Georgiadis, "An Assessment of Design Patterns' Influence on a Java-based E-Commerce Application", Journal of Theoretical and Applied Electronic Commerce Research, vol 5, issue 1, April 2010, pp. 25-38.
  24. N. Tsantalis and A. Chatzigeorgiou, “Identification of Refactoring Opportunities Introducing Polymorphism”, Journal of Systems and Software, vol. 83, issue 3, March 2010, pp. 391-404.
  25. N. Tsantalis and A. Chatzigeorgiou, "Identification of Move Method Refactoring Opportunities", IEEE Transactions on Software Engineering, vol. 35, no. 3, May/June 2009, pp. 347-367.
  26. K. Kouskouras, A. Chatzigeorgiou, G. Stephanides, "Facilitating software extension with design patterns and Aspect Oriented Programming", Journal of Systems and Software, vol. 81, issue 10, October 2008, pp. 1725-1737.
  27. S.T. Halkidis, N. Tsantalis, A. Chatzigeorgiou, G. Stephanides,"Architectural Risk Analysis of Software Systems based on Security Patterns", IEEE Transactions on Dependable and Secure Computing, vol. 5, no. 3, July-September 2008, pp. 129-142.
  28. A. Chatzigeorgiou, N. Tsantalis, I. Deligiannis, "An Empirical Study on Students' Ability to Comprehend Design Patterns", Computers & Education, vol. 51, issue 3, November 2008, pp. 1007-1016.
  29. V. Konstantakos, A. Chatzigeorgiou, S. Nikolaidis, T. Laopoulos, "Energy Consumption Estimation in Embedded Systems", IEEE Transactions onInstrumentation and Measurement, vol. 57, issue 4, April 2008, pp. 797-804.download a .pdfversion of the manuscript
  30. N. Tsantalis, A. Chatzigeorgiou, G. Stephanides, S. T. Halkidis, "Design Pattern Detection using Similarity Scoring", IEEE Transactions on Software Engineering, vol. 32, no. 11, November 2006, pp. 896-909.download a .pdf version of the manuscript
  31. A. Ampatzoglou and A. Chatzigeorgiou, "Evaluation of Object-Oriented Design Patterns in Game Development", Information and Software Technology (Elsevier), vol 49, issue 5, pp. 445-454, 2007. download a .pdf version of the manuscript
  32. S. T. Halkidis, A. Chatzigeorgiou and G. Stephanides, "A Qualitative Αnalysis of Software Security Patterns", Computers & Security (Elsevier), vol. 25, issue 5, pp. 379-392, July 2006.download a .pdf version of the manuscript
  33. S. Nikolaidis, A. Chatzigeorgiou, T. Laopoulos, "Developing an Environment for Embedded Software Energy Estimation", Computer Standards and Interfaces, vol. 28, issue 2, pp. 150-158, December 2005.download a .pdf version of the manuscript
  34. N. Tsantalis, A. Chatzigeorgiou, G. Stephanides, "Predicting the Probability of Change in Object-Oriented Systems", IEEE Transactions on Software Engineering, vol. 31, no. 7, July 2005, pp. 601-614.download a .pdf version of the manuscript
  35. A. Chatzigeorgiou, "Mathematical Assessment of Object-Oriented Design Quality", IEEE Transactions on Software Engineering, vol. 29, no. 11, pp. 1050-1053, November 2003. download a .pdf version of the manuscript
  36. A. Chatzigeorgiou, G. Antoniadis, "Efficient Management of Inspections in Software Development Projects", Information and Software Technology, vol. 45, issue 10, pp. 671-680, July 2003. download a .pdf version of the manuscript
  37. S. Kougia, A. Chatzigeorgiou, S. Nikolaidis, "Evaluating Power Efficient Data-Reuse Decisions for Embedded Multimedia Applications: An Analytical Approach", Journal of Circuits, Systems and Computers, vol. 13, no. 1, February 2004, pp. 151-180. download a .pdf version of the manuscript
  38. A. Chatzigeorgiou, "Performance and Power Evaluation of C++ Object-Oriented Programming in Embedded Processors", Information and Software Technology, vol. 45, issue 4, pp. 195-201, March 2003. download a .pdf version of the manuscript
  39. A. Chatzigeorgiou and G. Stephanides, "Energy Metric for Software Systems", Software Quality Journal, vol. 10, no. 4, December 2002, pp. 355-371 download a .pdf version of the manuscript
  40. A. Chatzigeorgiou and S. Nikolaidis, "Efficient Output Waveform Evaluation of a CMOS Inverter based on Short-Circuit Current Prediction", International Journal of Circuit Theory and Applications, vol. 30, issue 5, September/October 2002, pp. 547-566 download a .pdf version of the manuscript
  41. A. Chatzigeorgiou and S. Nikolaidis, "Modeling the Operation of Pass Transistor and CPL Gates", International Journal of Electronics, vol. 88, no. 9, pp.977-1000, September 2001 download a .pdf version of the manuscript
  42. A. Chatzigeorgiou, S. Nikolaidis and I. Tsoukalas, "Modeling CMOS Gates Driving RC Interconnect Loads", IEEE Transactions on Circuits and Systems - Part II: Analog and Digital Signal Processing, vol. 48, no. 4, April 2001, pp. 413 - 418. download a .pdf version of the manuscript
  43. A. Chatzigeorgiou and S. Nikolaidis, "Single transistor primitive for timing and power modeling of CMOS gates", International Journal of Electronics, vol. 87, no. 10, pp. 1227-1238, 2000. download a .pdf version of the manuscript
  44. S. Nikolaidis and A. Chatzigeorgiou, "Analytical Estimation of Propagation Delay and Short-circuit Power Dissipation in CMOS gates", International Journal of Circuit Theory and Applications, vol. 27, issue 4, July/August 1999, pp. 375-392. download a .pdf version of the manuscript
  45. A. Chatzigeorgiou, S. Nikolaidis and I. Tsoukalas, "Estimating starting point of conduction of CMOS gates", IEE Electronics Letters, vol 34, no 17, August 1998, pp. 1622-1624. download a .pdf version of the manuscript
  46. A. Chatzigeorgiou and S. Nikolaidis, "Input Mapping Algorithm for Modelling of CMOS Circuits", IEE Electronics Letters, vol. 34, no. 12, June 1998, pp. 1177-1179 download a .pdf version of the manuscript
  47. A. Chatzigeorgiou and S. Nikolaidis, "Collapsing the CMOS Transistor Chain to an Effective Single Equivalent Transistor", IEE Proceedings - Circuits, Devices and Systems, vol. 145, issue 5, October 1998, pp.347-353. download a .ps version of the manuscript
  48. S. Nikolaidis and A. Chatzigeorgiou, "Modeling the Transistor Chain Operation in CMOS Gates for Short Channel Devices", IEEE Transactions on Circuits and Systems, Part I:Fundamental Theory and Applications, vol. 46, no. 10, October 1999,pp. 1191-1202. download a .pdf version of the file
  49. A. Chatzigeorgiou, S. Nikolaidis and I. Tsoukalas, "A Modeling Technique for CMOS Gates", IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems, vol. 18, no. 5, May 1999, pp. 557-575. download a .pdf version of the file

Conferences

  1. N. Nikolaidis, G. Digkas, A. Ampatzoglou and A. Chatzigeorgiou, “Reusing Code from StackOverflow: The Effect on Technical Debt”, 45th Euromicro Conference on Software Engineering and Advanced Applications (SEAA’ 19), IEEE, Kalithea, Greece, August, 2019.
  2. A. A. Tsintzira, A. Ampatzoglou, O. Matei, A. Ampatzoglou, A. Chatzigeorgiou, and R. Heb, “Technical Debt Quantification through Metrics: An Industrial Validation”, 15th China-Europe International Symposium on Software Engineering Education (CEISEE’ 19), IEEE, Lisbon, Portugal, May, 2019.
  3. Christoph Becker, Fabian Fagerholm, Rahul Mohanani and Alexandros Chatzigeorgiou, “Temporal Discounting in Technical Debt: How do Software Practitioners Discount the Future?”, 2nd International Conference on Technical Debt (TechDebt2019), May 26-27, 2019, Montreal, QC, Canada
  4. A. Ampatzoglou, A. A. Tsintzira, E. M. Arvanitou, A. Chatzigeorgiou, I. Stamelos, A. Moga, R. Heb, O. Matei, N. Tsiridis, D. Kehagias, “Applying the Single Responsibility Principle in Industry: Modularity Benefits and Trade-offs”, 23rd International Conference on the Evaluation and Assessment in Software Engineering (EASE' 19), ACM, Copenhagen, Denmark, 14-17 April 2019.
  5. E.M. Arvanitou, A. Ampatzoglou, S. Bibi, A. Chatzigeorgiou and I. Stamelos, “Monitoring Technical Debt in an Industrial Setting”, Evaluation and Assessment in Software Engineering (EASE’2019), April 15-17, 2019, Copenhagen, Denmark
  6. Panagiotis Kouros, Theodore Chaikalis, Elvira-Maria Arvanitou, Alexander Chatzigeorgiou, Apostolos Ampatzoglou, and Theodore Amanatidis, JCaliper: Search-Based Technical Debt Management. In 34th Symposium on Applied Computing (SAC’ 19). ACM, 2019.
  7. D. Tsoukalas, M. Siavvas, M. Jankovic, D. Kehagias, A. Chatzigeorgiou, D. Tzovaras, “Methods and Tools for TD Estimation and Forecasting: A State-of-the-art Survey”, 9th international Conference on Intelligent Systems 2018, 25-27 September 2018, Madeira, Portugal
  8. Peggy Skiada, Apostolos Ampatzoglou, Elvira-Maria Arvanitou, Alexander Chatzigeorgiou, and Ioannis Stamelos.Exploring the Relationship between Software Modularity and Technical Debt. In 44th Conference on Software Engineering and Advanced Applications (SEAA). IEEE Computer Society, 2018
  9. Sofia Charalampidou, Elvira-Maria Arvanitou, Apostolos Ampatzoglou, Alexander Chatzigeorgiou, Paris Avgeriou, and Ioannis Stamelos.Structural Quality Metrics as Indicators of the Long Method Bad Smell: An Empirical Study. In 44th Conference on Software Engineering and Advanced Applications (SEAA). IEEE Computer Society, 2018
  10. Sofia Charalampidou, Apostolos Ampatzoglou, Alexander Chatzigeorgiou, and Nikolaos Tsiridis. Integrating Requirement Specifications and Source Code Traceability within the IDE to Prevent Documentation Debt. In 44th Conference on Software Engineering and Advanced Applications (SEAA). IEEE Computer Society, 2018
  11. Alexander Lampropoulos, Apostolos Ampatzoglou, Stamatia Bibi, Alexander Chatzigeorgiou, and Ioannis Stamelos. REACT: A Process for Improving Open-Source Software Reuse. In 11th International Conference on the Quality of Information and Communications Technology (QUATIC’ 18). IEEE Computer Society, 2018
  12. Lazaros Papadopoulos, Charalampos Marantos, Georgios Digkas, Apostolos Ampatzoglou, Alexander Chatzigeorgiou, and Dimitrios Soudris. Interrelations between Software Quality Metrics, Performance and Energy Consumption in Embedded Applications. In 21st International Workshop on Software and Compilers for Embedded Systems (SCOPES’ 18). ACM, 2018
  13. Areti Ampatzoglou, Alexander Michailidis, Christos Sarikyriakidis, Apostolos Ampatzoglou, Alexander Chatzigeorgiou, and Paris Avgeriou,“A Framework for Managing Interest in Technical Debt: An Industrial Validation”, 1st International Conference on Technical Debt (TechDebt 2018), Gothenburg, Sweden, May 27-28, 2018.
  14. Theodoros Amanatidis, Nikolaos Mittas, Alexander Chatzigeorgiou, Apostolos Ampatzoglou, and Lefteris Angelis,“The Developer’s Dilemma: Factors Affecting the Decision to Repay Code Debt”, 1st International Conference on Technical Debt (TechDebt 2018), Gothenburg, Sweden, May 27-28, 2018.
  15. Apostolos Ampatzoglou, Stamatia Bibi, Alexander Chatzigeorgiou, Paris Avgeriou, and Ioannis Stamelos, “Reusability Index: A Measure for Assessing Software Assets Reusabilit”, in 17th International Conference on Software Reuse (ICSR). Springer, Madrid, Spain, May 21-23, 2018.Best Paper Award
  16. Maria Eleni Paschali, Nikolaos Bafatakis, Apostolos Ampatzoglou, Alexander Chatzigeorgiou, and Ioannis Stamelos. Tool-Assisted Game Scenario Representation through Flow Charts. In 13th International Conference on the Evaluation of Novel Approaches to Software Engineering (ENASE’ 18). ScitePress, Madeira, Portugal, March 23-34, 2018.
  17. Nikolaos Tsantalis, Theodoros Chaikalis, Alexander Chatzigeorgiou, “Ten Years of JDeodorant: Lessons Learned from the Hunt for Smells” 25th IEEE International Conference on Software Analysis, Evolution, and Reengineering (SANER 2018), Campobasso, Italy, March 20-23, 2018. Most Influential Paper award.
  18. Georgios Digkas, Mircea Lungu, Alexander Chatzigeorgiou, Apostolos Ampatzoglou and Paris Avgeriou, “How Do Developers Pay Back Technical Debt in the Apache Ecosystem?”, 25th IEEE International Conference on Software Analysis, Evolution, and Reengineering (SANER 2018), Campobasso, Italy, March 20-23, 2018.
  19. Elvira Maria Arvanitou, Apostolos Ampatzoglou, Kostas Tzouvalidis, Alexander Chatzigeorgiou, Paris Avgeriou and Ignatios Deligiannis, “Assessing Change Proneness at the Architecture Level: An Empirical Validation”, 1st International Workshop on Emerging Trends in Software Design and Architecture (WETSoDA 2017), Nanjing, China, December 3-8, 2017
  20. G. Digkas, M. Lungu, A. Chatzigeorgiou and P. Avgeriou, “The evolution of Technical Debt in The Apache Ecosystem”, 11th European Conference on Software Architecture (ECSA’2017), 11-15 September 2017, Canterbury, UK
  21. Makrina Viola Kosti, Apostolos Ampatzoglou, Alexander Chatzigeorgiou, Georgios D. Pallas, Ioannis Stamelos and Lefteris Angelis, “TD Principal Assessment through Structural Quality Metrics", 43rd EUROMICRO Conference on Software Engineering and Advanced Applications (SEAA), Vienna, Austria, August 30th – September 1st, 2017
  22. Sofia Charalampidou, Apostolos Ampatzoglou, Alexander Chatzigeorgiou and Paris Avgeriou, “Assessing Code Smell Interest Probability: A Case Study”, 9th International Workshop on Managing Technical Debt (MTD’2017), in conjunction with XP2017, Cologne, Germany, May 22, 2017
  23. Theodoros Amanatidis, Alexander Chatzigeorgiou, Apostolos Ampatzoglou and Ioannis Stamelos,“Who is producing more Technical Debt? A personalized Assessment of TD Principal”, 9th International Workshop on Managing Technical Debt (MTD’2017), in conjunction with XP2017, Cologne, Germany, May 22, 2017
  24. Elvira Maria Arvanitou, Apostolos Ampatzoglou, Alexander Chatzigeorgiou and Paris Avgeriou, “A Method for Assessing Class Change Proneness", 21st Conference on Evaluation and Assessment in Software Engineering (EASE’2017), Karlskrona, Sweden, June 15-16, 2017, Best Paper Award
  25. S. Xinogalos, M. Satratzemi, A. Chatzigeorgiou, D. Tsompanoudi, “Student Perceptions on the Benefits and Shortcomings of Distributed Pair Programming Assignments”, Special Session: Technical Didactic Software Engineering (TDSE), Global Engineering Education Conference (EDUCON 2017, Athens, Greece, April 25-28, 2017
  26. P. Kyriakakis, A. Chatzigeorgiou, A. Ampatzoglou and S. Xinogalos, “Evolution of method invocation and object instantiation patterns in a PHP ecosystem”, 20th Pan-Hellenic Conference on Informatics (PCI’2016), Patra, Greece, November 10-12, 2016.
  27. A. Ampatzoglou, A. Ampatzoglou, A. Chatzigeorgiou, P. Avgeriou, P. Abrahamsson, A. Martini, U. Zdun and Kari Systa, “The Perception of Technical Debt in the Embedded Systems Domain: An Industrial Case Study”, 8th International Workshop on Managing Technical Debt (MTD’2016), in conjunction with ICSME 2016, Raleigh, North Carolina, USA, October 4, 2016.
  28. G. N. Kouziokas, A. Chatzigeorgiou and K. Perakis, “Predicting Environmental Data in Public Management by Using Artificial Intelligence”, 11th International Scientific Conference eRA-11, Piraeus, Greece, September 21-23, 2016.
  29. S. Xinogalos, M. Satratzemi, D. Tsompanoudi and A. Chatzigeorgiou, “Monitoring an OOP Course through Assignments in a Distributed Pair Programming System”, 5th Workshop on Software Quality Analysis, Monitoring, Improvement and Applications (SQAMIA 2016), Budapest, Hungary, August 29-31, 2016.
  30. M. E. Paschali, A. Ampatzoglou, S. Bibi, A. Chatzigeorgiou and I. Stamelos, "A case study on the availability of open-source components for game development", 15th International Conference on Software Reuse (ICSR'2016), Limassol, Cyprus, June 5-7, 2016
  31. A. Chatzigeorgiou, A. Ampatzoglou, A. Ampatzoglou, and Theodoros Amanatidis, "Estimating the Breaking Point for Technical Debt", 7th International Workshop on Managing Technical Debt (MTD'2015), Bremen, Germany, October 2, 2015
  32. E.M. Arvanitou, A. Ampatzoglou, A. Chatzigeorgiou, P. Avgeriou, “Introducing a Ripple Effect Measure: A Theoretical and Empirical Validation”, 9th International Symposium on Empirical Software Engineering and Measurement (ESEM' 15), Beijing, China, October 22-23, 2015
  33. A. Chatzigeorgiou, T. Chaikalis, G. Paschalidou, N. Vesyropoulos, C. K. Georgiadis and E. Stiakakis, “A Taxonomy of Evaluation Approaches in Software Engineering”, 7th Balkan Conference in Informatics, Craiova, Romania, September 2-4, 2015, Best Paper Award, Presentation Slides.
  34. T. Chaikalis, A. Chatzigeorgiou, A. Ampatzoglou, I. Deligiannis, “Assessing the Evolution of Quality in Software Libraries”, 7th Balkan Conference in Informatics, Craiova, Romania, September 2-4, 2015.
  35. A. Zaimi, A. Ampatzoglou, N. Triantafyllidou, A. Chatzigeorgiou, A. Mavridis, T. Chaikalis, I. Deligiannis, P. Sfetsos, I. Stamelos, “A Case Study on Reusing Third-Party Libraries in Open-Source Software Development”, 7th Balkan Conference in Informatics, Craiova, Romania, September 2-4, 2015.
  36. A. Ampatzoglou, A. Ampatzoglou, P. Avgeriou, and A. Chatzigeorgiou, “Establishing a framework for managing interest in technical debt”, 5th International Symposium on Business Modeling and Software Design (BMSD), Milan, Italy, 6-8 July, SciTePress, 2015
  37. M.E. Paschali, A. Ampatzoglou, A. Chatzigeorgiou and I. Stamelos, “Non-functional requirements that influence gaming experience: A survey on gamers satisfaction factors”, Academic MindTrek 2014, Tampere Finland, November 4-7, 2014.
  38. T. Chaikalis, E.Ligu, G. Melas and A. Chatzigeorgiou, “SEAgle: Effortless Software Evolution Analysis”, 30th International Conference on Software Maintenance and Evolution (ICSME’2014), Tool Demonstration Track, Victoria, British Columbia, Canada, Sept. 28 – Oct. 3, 2014.Presentation Slides
  39. P. Kyriakakis, A. Chatzigeorgiou, “Maintenance Patterns of large-scale PHP Web Applications”, 30th International Conference on Software Maintenance and Evolution (ICSME’2014), Victoria, British Columbia, Canada, Sept. 28 – Oct. 3, 2014. (Acceptance rate: 19%) Presentation Slides and Teaser Video
  40. P. Sfetsos, A. Ampatzoglou, A. Chatzigeorgiou, I. Deligiannis and I. Stamelos, “A comparative study on the effectiveness of patterns in software libraries and standalone applications”, 9th International Conference on the Quality of Information and Communications Technology (QUATIC’2014), Quality in Agile Methods Track, Guimaraes, Portugal, September 23-26, 2014.
  41. E. Ligu, A. Chatzigeorgiou, T. Chaikalis and N. Ygeionomakis, "Identification of Refused Bequest Code Smells", 29th IEEE International Conference on Software Maintenance (ICSM'2013), Eindhoven, Netherlands, September 23-26, 2013. Presentation Slides
  42. G. Paschalidou, E. Stiakakis and A. Chatzigeorgiou, "An Application of Data Envelopment Analysis to Software Quality Assessment", 6th Balkan Conference in Informatics (BCI'2013), Thessaloniki, Greece, September 19-21, 2013.
  43. E. Ligu, T. Chaikalis and A. Chatzigeorgiou, "BuCo Reporter: Mining Software and Bug Repositories", 6th Balkan Conference in Informatics (BCI'2013), Thessaloniki, Greece, September 19-21, 2013.
  44. T. Chaikalis, G. Melas and A. Chatzigeorgiou, "SEANets: Software Evolution Analysis with Networks", 28th IEEE International Conference on Software Maintenance (ICSM'2012), Tool Demonstration Track, Riva del Garda, Trento, Italy, September 23rd - 30th, 2012. Screencast
  45. A. Chatzigeorgiou, "Guidelines for the application of Data Envelopment Analysis to assess evolving software", 6th International Workshop on Foundations and Techniques for Open Source Software Certification (OpenCert'2012),Thessaloniki, Greece, 1-2 October 2012 Presentation Slides
  46. A. Chatzigeorgiou and G. Melas, "Trends in Object-Oriented Software Evolution: Investigating Network Properties", 34th International Conference on Software Engineering (ICSE'2012), New Ideas & Emerging Results track (NIER), Zurich, Switzerland, June 2-9, 2012. (Acceptance ratio: 17.7%, 26/147) Presentation Slides
  47. T. Chaikalis and A. Chatzigeorgiou, "Investigating the Evolution of Feature Scattering", 6th International Workshop on Software Quality and Maintainability (SQM 2012), collocated with 16th European Conference on Software Maintenance and Reengineering (CSMR 2012), Szeged, Hungary, March 27, 2012.
  48. M. Fokaefs, N. Tsantalis, E. Stroulia, and A. Chatzigeorgiou, "JDeodorant: Identification and Application of Extract Class Refactorings," 33rd International Conference on Software Engineering (ICSE'2011), Tool Demonstration Session, Waikiki, Honolulu, Hawaii, May 21-28, 2011. (Tool Demonstration).
  49. N. Tsantalis and A. Chatzigeorgiou, "Ranking Refactoring Suggestions based on Historical Volatility", 15th European Conference on Software Maintenance and Reengineering (CSMR'2011), Oldenburg, Germany, March 1-4, 2011, Presentation Slides
  50. A. Chatzigeorgiou and A. Manakos, "Investigating the Evolution of Bad Smells in Object-Oriented Code", 7th International Conference on the Quality of Information and Communications Technology (QUATIC'2010), Porto, Portugal, September 29-October 2, 2010. Best Paper Award, Presentation Slides
  51. M. Basdavanos and A. Chatzigeorgiou, "Placement of Entities in Object-Oriented Systems by means of a Single-Objective Genetic Algorithm", 5th International Conference on Software Engineering Advances (ICSEA 2010), Nice, France, August 22-27, 2010. Best Papers Award, Presentation Slides
  52. G. Kniesel, A. Binun, P. Hegedus, L. J. Fulop, A. Chatzigeorgiou, Y.-G. Gueheneuc and N. Tsantalis, "DPDX - Towards a Common Result Exchange Format for Design Pattern Detection Tools", 14th European Conference on Software Maintenance and Reengineering (CSMR'2010), Madrid, Spain, March 15-18, 2010, (short paper).
  53. S.T.Halkidis, A. Chatzigeorgiou and G. Stephanides, "Moving from Requirements to Design ConfrontingSecurity Issues: A Case Study", 4th International Symposium on Information Security (IS'09), Vilamoura, Algarve-Portugal, Nov 02 - 03, 2009.
  54. M. Fokaefs, N. Tsantalis, A. Chatzigeorgiou and J. Sander, "Decomposing Object-oriented Class Modules Using an Agglomerative Clustering Technique", 25th IEEE International Conference on Software Maintenance (ICSM'2009), Edmonton, Alberta, Canada, September 20-26, 2009. pdf
  55. N. Tsantalis and A. Chatzigeorgiou, "Identification of Extract Method Refactoring Opportunities", 13th European Conference on Software Maintenance and Reengineering (CSMR 2009), Kaiserslautern, Germany, March 24-27, 2009 download a .pdfversion of the manuscript.
  56. I. Deligiannis, P. Sfetsos, A. Chatzigeorgiou, "A controlled experiment investigation of Behavior allocation in two Object-Oriented methods", eRA – 3: International Conference on the Contribution of Information Technology to Science, Economy, Society and Education, Aegina Island, Greece, 19-21 September 2008. download a .pdfversion of the manuscript
  57. A. Ampatzoglou, A. Chatzigeorgiou, I. Stamelos, "Graphical Representation as a Factor of 3D Software User Satisfaction: A Metric Based Approach", 12th Panhellenic Conference in Informatics (PCI'2008), Samos Island, Greece, August 28-30, 2008. download a .pdfversion of the manuscript
  58. N. Tsantalis, T. Chaikalis, A. Chatzigeorgiou, "JDeodorant: Identification and Removal of Type-Checking Bad Smells", 12th European Conference on Software Maintenance and Reengineering (CSMR'2008), Athens, Greece, April 1-4, 2008, pp. 329-331. (Tool Demonstration)
  59. M. Fokaefs, N. Tsantalis and A. Chatzigeorgiou, "JDeodorant: Identification andRemoval of Feature Envy Bad Smells", 23rd IEEE International Conference on Software Maintenance (ICSM'2007), Tool Demonstration, Paris, France October 2-5, 2007. (Tool Demonstration)
  60. A. Ampatzoglou, A. Chatzigeorgiou and N. Samaras, "Investigating the use of patterns in open source games", 3rd Balkan Conference in Informatics (BCI'2007), Sofia, Bulgaria, 27-29 September, 2007. download a .pdf version of the manuscript
  61. M. Mouratidou, V. Lourdas, A. Chatzigeorgiou, C. K. Georgiadis, "Code Improvement: Implementing Design Patterns to Java EE Applications", 11th Panhellenic Conference on Informatics (PCI'2007), Patras, Greece, May 18-20, 2007. download a .pdf version of the manuscript
  62. S. T. Halkidis, A. Chatzigeorgiou and G. Stephanides, "A Practical Evaluation of Security Patterns", 6th International Conference on Artificial Intelligence and Digital Communications (AIDC'2006), Thessaloniki, Greece, August 2006. download a .pdf version of the manuscript
  63. S. T. Halkidis, A. Chatzigeorgiou and G. Stephanides, "Quantitative Evaluation of Systems with Security Patterns using a Fuzzy Approach", First International Workshop on Information Security (IS'06), Montpellier, France, Oct 30 - Nov 1, 2006. download a .pdf version of the manuscript
  64. A. Perdos, A. Chatzigeorgiou and G. Stephanides, “Evaluation of a Queuing Theory and Systems Modeling Course Based on UML”, 6th IEEE International Conference on Advanced Learning Technologies (ICALT’2006), Kerkrade, The Netherlands, July 5-7, 2006. download a .pdfversion of the manuscript
  65. P. Basdaras, K. Chalkias, A. Chatzigeorgiou, I. Deligiannis, P. Tsakiri, N. Tsantalis, "Lessons learned from an open-source University Project", 10th International WSEAS Conference on Computers, Vouliagmeni, Athens, Greece, July 13-15, 2006. download a .pdf version of the manuscript Presentation
  66. A. Chatzigeorgiou, N. Tsantalis, G. Stephanides, "Application of Graph Theory to OO Software Engineering", 2nd Workshop on Interdisciplinary Software Engineering Research (WISER'2006), Shanghai, China, May 20, 2006. download slides
  67. V. Konstantakos, A. Chatzigeorgiou, S. Nikolaidis and Th. Laopoulos, "Energy consumption estimation in embedded systems", 2006 IEEE Instrumentation and Measurement Technology Conference (IMTC), Sorrento, Italy, April 24-27, 2006.download a .pdf version of the manuscript
  68. N. Tsantalis, A. Chatzigeorgiou, S. T. Halkidis, G. Stephanides, "A Novel Approach to Automated Design Pattern Detection", 10th Panhellenic Conference on Informatics (PCI'2005), Volos, Greece, Nov. 11-13, 2005. download a .pdf version of the manuscript
  69. S. Halkidis, A. Chatzigeorgiou, G. Stephanides, "An Approach to the Specification of Software Security Patterns", 5th International Conference on Artificial Intelligence and Digital Communications (AIDC'2005), Craiova, Romania, September 1-3, 2005 download a .pdf version of the manuscript
  70. K. Zotos, A. Litke, A. Chatzigeorgiou, S. Nikolaidis, G. Stephanides, "Energy Complexity of Software in Embedded Systems", IASTED International Conference on Automation, Control and Applications (ACIT-ACA 2005), Novosibirsk, Russia, June 20-24, 2005. download a .pdf version of the manuscript
  71. S. T. Halkidis, A. Chatzigeorgiou, G. Stephanides, "A Qualitative Evaluation of Security Patterns", 6th International Conference on Information and Communications Security (ICICS'04), Malaga, Spain, 27-29 October, 2004. download a .pdf version of the manuscript
  72. N. Tsantalis, A. Chatzigeorgiou, G. Stephanides, I. Deligiannis, "Probabilistic Evaluation of Object-Oriented Systems", 10th International Software Metrics Symposium (METRICS'2004), Chicago, USA, 14-16 September 2004. download a .pdf version of the manuscript
  73. I. Deligiannis, P. Sfetsos, I. Stamelos, L. Angelis, A. Chatzigeorgiou, P. Katsaros, "Assessing the modifiability of two object-oriented design alternatives - A controlled experiment replication", 5th EUROSIM Congress on Modelling and Simulation (EUROSIM'04), Paris, France, September 06-10, 2004. download a .pdf version of the manuscript
  74. A. Perdos, A. Chatzigeorgiou and G. Stephanides, "Teaching Queuing Systems Modeling Using UML", 4th IEEE International Conference on Advanced Learning Technologies, Joensuu, Finland, Aug. 30 - Sept. 1, 2004. download a .pdf version of the manuscript
  75. A. Chatzigeorgiou, S. Xanthos, G. Stephanides, "Evaluating Object-Oriented Designs with Link Analysis", 26th International Conference on Software Engineering (ICSE'2004), Edinburgh, Scotland, May 23-28, 2004. download a .pdf version of the manuscript
  76. A. Chatzigeorgiou, G. Stephanides, "Entropy as a Measure of Object-Oriented Design Quality", 1st Balkan Conference on Informatics (BCI'2003), Thessaloniki, Greece, November 21-23, 2003. download a .pdf version of the manuscript
  77. S. Nikolaidis, A. Chatzigeorgiou, T. Laopoulos, "Developing an Environment for Embedded Software Energy Estimation", IEEE 2nd Int. Workshop on Intelligent Data Acquisition and Advanced Computing Systems (IDAACS'2003), Lviv, Ukraine, September 8-10, 2003. download a .pdf version of the manuscript
  78. S. Xanthos, A. Chatzigeorgiou, G. Stephanides, "Energy Estimation with SystemC: A Programmer's Perspective", 7th WSEAS International Conference on CIRCUITS, July 2003, Corfu, Greece download a .pdf version of the manuscript
  79. A. Perdos, A. Chatzigeorgiou, G. Stephanides, "Simulation Software for a Network Modelling Lab", IEEE International Conference on Advanced Learning Technologies (ICALT'2003), July 2003, Athens, Greece download a .pdf version of the manuscript
  80. S. Nikolaidis, H. Pournara, A. Chatzigeorgiou, "Output Waveform Evaluation of Basic Pass Transistor Structure", 12th International Workshop on Power and Timing Modeling, Optimization and Simulation (PATMOS'2002), September 11 - 13, 2002 Sevilla, Spain download a .pdf version of the manuscript
  81. A. Chatzigeorgiou and G. Stephanides, "Energy Issues in Software Design of Embedded Systems", 2nd WSEAS International Conference on Applied Informatics, Rethymnon, Crete, Greece, July 7-14, 2002 download a .pdf version of the manuscript
  82. A. Chatzigeorgiou and G. Stephanides, "Evaluating Performance and Power of Object-Oriented vs. Procedural Programming in Embedded Processors", 7th International Conference on Reliable Software Technologies, Ada-Europe 2002, Vienna, Austria, June 17-21, 2002. Published in J. Blieberger and A. Strohmeier (Eds.): Ada-Europe 2002, LNCS 2361, pp. 65-75, 2002. Springer-Verlag, Berlin Heidelberg 2002. download a .pdf version of the manuscript
  83. A. Chatzigeorgiou, S. Kougia and S. Nikolaidis, "Evaluating the Effect of Data-Reuse Transformations on Processor Power Consumption", International Workshop on Power and Timing Modeling, Optimization and Simulation (PATMOS'2001), October 26-28, 2001, Switzerland. download a .pdf version of the manuscript
  84. N. Kavvadias, A. Zanikopoulos, Ch Voliotidis, S. Kougia, A. Chatzigeorgiou, S. Nikolaidis, "Power Exploration of Parallel Embedded Architectures Implementing Data-Reuse Transformations'', IEEE International Conference on Electronics, Circuits and Systems (ICECS'2001), September 2-5, 2001, Malta. download a .pdf version of the manuscript
  85. M. Kougia, A. Chatzigeorgiou, S. Nikolaidis, "Power Reduction for Multimedia Applications Through Data-Reuse Memory Exploration'' IEEE International Conference on Electronics, Circuits and Systems (ICECS'2001), September 2-5, 2001, Malta. download a .pdf version of the manuscript
  86. N. Kavvadias, A. Chatzigeorgiou, N. Zervas and S. Nikolaidis, "Memory Hierarchy Exploration for Low Power Architectures in Embedded Multimedia Applications", International Conference on Image Processing (ICIP'01), Thessaloniki, October 2001.download a .pdf version of the manuscript
  87. S. Kougia, A. Chatzigeorgiou, N. Zervas and S. Nikolaidis, "Analytical Exploration of Power Efficient Data-Reuse Transformations on Multimedia Applications", Proc. IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP'2001). May 7-11, 2001, Salt Lake City, Utah, USA. download a .pdf version of the manuscript
  88. A. Chatzigeorgiou, S. Nikolaidis and I. Tsoukalas, "Efficient output waveform evaluation of a CMOS inverter", Proc. 9th International Workshop on Power and Timing Modeling, Optimization and Simulation (PATMOS'99), Kos, Greece, October 1999, pp.135-144. download a .pdf version of the manuscript
  89. A. Chatzigeorgiou, S. Nikolaidis and I. Tsoukalas, "Timing Analysis of Pass Transistor and CPL Gates", Proc. 9th International Workshop on Power and Timing Modeling, Optimization and Simulation (PATMOS'99), Kos, Greece, October 1999, pp.367-376. download a .pdf version of the manuscript
  90. A. Chatzigeorgiou, S. Nikolaidis and I. Tsoukalas, "Single Transistor Primitive for Modeling CMOS Gates", Proc. 6th IEEE International Conference on Electronics, Circuits and Systems (ICECS'99), Paphos, Cyprus, September 5-8, 1999.download a .pdf version of the manuscript.
  91. A. Chatzigeorgiou, S. Nikolaidis, I. Tsoukalas and O. Koufopavlou, "CMOS Gate Modeling Based on Equivalent Inverter", Proc. IEEE International Symposium on Circuits and Systems (ISCAS'99), Orlando, FL, USA, 1999, vol. VI, pp. 234-237 download a .pdf version of the manuscript
  92. A. Chatzigeorgiou and S. Nikolaidis, "Analysis of the Transistor Chain Operation in CMOS Gates for Short-Channel Devices", Proceedings of the IEEE International Symposium on Circuits and Systems (ISCAS'98), Monterey CA, USA, May 31-June 3, 1998, vol. VI, pp. 363-367 download a .pdf version of the manuscript If the file does not open automatically please save the file in your local disk
  93. S. Nikolaidis, A. Chatzigeorgiou and E.D. Kyriakis-Bitzaros, "Delay and Power Estimation for a CMOS Inverter driving RC Interconnect Loads", Proceedings of the IEEE International Symposium on Circuits and Systems (ISCAS'98), Monterey CA, USA, May 31-June 3, 1998, vol. VI, pp. 368-371 download a .pdf version of the manuscript If the file does not open automatically please save the file in your local disk
  94. A. Chatzigeorgiou and S. Nikolaidis, "Collapsing the Transistor Chain to an Effective Single Equivalent Transistor", Proceedings of the Design, Automation and Test in Europe Conference (DATE'98), Paris, France, 23-26 February, 1998, pp. 2-6 download a .ps version of the manuscript
  95. S. Nikolaidis and A. Chatzigeorgiou, "Modeling the Operation of the Transistor Chain in CMOS Gates", Proceedings of the 4th IEEE International Conference on Electronics, Circuits and Systems (ICECS'97), Cairo, Egypt, 15-18 December, 1997, pp. 277-281 download a .pdf version of the manuscript

Other

  1. S. Xanthos, A. Chatzigeorgiou, G. Stephanides, "Object-Oriented Design Evaluation Using Algebraic Graph Theory", Microsoft Research Academic Conference: Compiler Architectures and Programming Languages / Techniques, Budapest, Hungary, November 10-12, 2003. download a .pdf version of the document
  2. K. Pantazis, A. Chatzigeorgiou, T. Mikos, K. Chatzigeorgiou, D. G. Goulis, I. Bontis, I. Papadimas, "Artificial Neural Networks in azoospermia: A comparison to clinical diagnosis", 3rd European Congress of Andrology, Muenster, Germany, September 11-14, 2004. After selection, the paper has also appeared in Andrology vol. 36, pp. 246, 2004.download a .pdf version of the document
  3. A. Litke, K. Zotos, A. Chatzigeorgiou, G. Stephanides, G. Giannakides, "Energy Consumption Analysis of Design Patterns", Int. Conference on Machine Learning and Software Engineering (MLSE'05), Istanbul, Turkey, June 24-26, 2005.

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