Chaotic electronics and applications

Department of Electrical and Computer Engineering

Title: Chaotic electronics and applications

Dr. Stavros G. Stavrinides
Visiting Assistant Professor,
Department of Electrical and Computer Engineering
University of Cyprus

Wednesday, 21st November 2012, 17:00 – 18:30
ΚΕΝΤΡ. ΠΤΕΡ. – Ε113, Old Campus, University of Cyprus

Abstract: Chaos is a universal phenomenon, exhibited by complex systems. Although it seems to be random, it is not stochastic, but deterministic. Since almost all processes in nature are nonlinear, complex (chaotic) phenomena are the norm. Thus, one can realize the significance of applied chaos theory in all fields of science, engineering, economy and social sciences. Since nonlinear circuit behavior has attracted the interest of the scientific and engineering community, during the last decades, numerous circuits have been presented. Next to that, experimental study and verification of chaotic phenomena, utilizing nonlinear circuits, have been portrayed. Moreover, applications of chaotic operating nonlinear circuits have appeared, mainly in the area of secure communications or ultra-wideband data transmission. In this lecture an introduction to chaos and its features is provided, together with applied chaos theory examples utilizing nonlinear circuits’ examples. Finally, chaotic synchronization and its application on secure communications and ultra-wideband (UWB) is discussed.

Biography: Dr. Stavros Stavrinides received his Physics Diploma, his M.Sc. in Electronics and his Ph.D. in Chaotic Electronics in 1996, 2003 and 2007, respectively; all from the Aristotle University of Thessaloniki. He currently serves as a Visiting Assistant Professor at the Department of Electrical and Computer Engineering, UCY in Cyprus. Dr Stavrinides has taught numerous topics in physics and electronics, in various institutions (such as the Aristotle University of Thessaloniki and Kavala Institute of Technology) for more than 14 years. His research interests include, non-exhaustively, the design of analog and mixed-signal electronic circuits, chaotic electronics and their applications, experimental chaotic synchronization, chaotic UWB communications as well as, measurement and instrumentation systems. Dr. Stavrinides has authored or co-authored more than 40 journal and conference papers. He has participated, as a researcher, in several (Greek-) national and international (EU, NATO) funded projects.




Satellite Communications


Satellite Communications

Constantinos Kassianides
Venue: Auditorium Alpha –European University Cyprus
Tuesday, November 20, 2012, 6-7pm

Main points of the seminar:

  1. A short historical overview of satellite communications
  2. Basics of Satellite communications
  3. Satellite Orbits and Frequencies
  4. Satellite Services and applications
  5. Satellite Signal – Atmospheric effects/impairments
  6. The Hellas Sat Satellite
  7. HELLAS SAT R&D activities

Biography: Constantinos Kassianides was born in Cyprus. He holds the degree of HND in Electrical and Electronics Engineering from the Higher Technical Institute, Cyprus, and the degrees of Beng(Hons) Electronics and Communications and PhD in Satellite Communications from the University of Glamorgan, UK. Between 1998 and 2002 he was a part‐time lecturer at the University of Glamorgan, UK, in the area of Telecommunications, Media and Computer Programming. He has also been with the Cyprus Broadcasting Corporation as a Telecommunications Engineer in the TV Broadcasting Department. Dr. Kassianides since 2003 has been with HELLAS‐SAT, where he held the positions of Payload Manager and Head of R&D Department. He currently holds the position of Head of R&D and Teleport Marketing, being responsible for participating in research projects in the area of satellite communications, development of new services, project management and development of the Hellas Sat Teleport in Cyprus. He has been the project manager/coordinator of ESA funded project in the frame of ARTES 1 program, Project Manager for Hellas Sat of the EU 6th Framework funded IP project, RURAL WINGS, participating in other EU and ESA funded Research Projects in the area of Telecommunications and has been participating in International Conferences and forums with publications and conference papers in the field of satellite communications. He has been the external examiner of PhD Thesis in Satellite Communications in Cranfield University, UK. His research interests include Satellite Communication Systems, Radiowave Propagation, TV Broadcasting over Satellite, Mobile Satellite Communications, Modeling and Simulation of Digital Systems, and UAVs.

Light refreshments will be provided.
Parking information:
The seminar is organized with the collaboration of the EUC IEEE Student Branch.




Every Picture Tells a Story – Visual Cluster Analysis

Department of Electrical and Computer Engineering

Title: Every Picture Tells a Story – Visual Cluster Analysis

Prof. James C. Bezdek
Computation Intelligence Society (CIS) Distinguished Lecturer

Wednesday, 31th October 2012, 17:00 – 18:30
Room XWD01-110, New Campus, University of Cyprus

Abstract: The talk overviews the history of Visual Clustering, which began thousands of years ago. The first image for this appeared in 1873. Three algorithms for visual assessment of clustering tendency examined, namely the VAT, iVAT and asiVAT, with applications to social network analysis. Particularly three applications, one for each algorithm will be discussed: time series analysis with clusters of linguistic medoid prototypes in Eldercare data (iVAT); social network analysis with Sampson’s Monastery data (asiVAT); and network access security (VAT), a commercial application developed by CA technologies.

Biography: Prof. James (Jim) Bezdek received the PhD in Applied Mathematics from Cornell University in 1973. Jim is past president of NAFIPS (North American Fuzzy Information Processing Society), IFSA (International Fuzzy Systems Association) and the IEEE CIS (Computational Intelligence Society). He is the Founding Editor of the Int. Journal of Approximate Reasoning and the IEEE Transactions on Fuzzy Systems, and he is a Life Fellow of the IEEE and IFSA. He is the recipient of the IEEE 3rd Millennium, Medal, IEEE CIS Fuzzy Systems Pioneer Award, and IEEE Rosenblatt Award. Jim’s interests: woodworking, optimization, motorcycles, pattern recognition, cigars, clustering in very large data, fishing, co-clustering, blues music, wireless sensor networks, poker and visual clustering. Jim retired in 2007, and will be coming to a university near you soon.




Integrating Green House Emission Costs in Life-Cycle Loss Evaluations

Department of Electrical and Computer Engineering

Title: Integrating Green House Emission Costs in Life-Cycle Loss Evaluations

Antonis Lazari
Ph.D. Student of the Department of Electrical and Computer Engineering
University of Cyprus

Wednesday, 17th October 2012, 17:00 – 18:30
Room KENTP. ΠΤΕΡ. – E113, Old Campus, University of Cyprus

Abstract: In the context of the continuous growth on power system investment and energy costs, the stakeholders are willing to strike a sense of balance between cost of purchase and cost of energy losses. Electric utilities are gradually interested in installing highly efficient equipment in their networks, so as to reduce the energy consumption. Hence, it is essential to rely on enhanced methodologies that could in detail evaluate the losses of electrical equipment/systems and their cost, in our case in transmission lines. European Commission strategies are encouraging communities towards more efficient and more sustainable energy solutions that will result in reduction of greenhouse gases (GHG) emissions in future years. Nowadays the reduction of greenhouse gas emissions is becoming a topical issue due to the growing concern for global warming and climate change. The actions that can immediately reduce GHG emissions and their cost, for an electric utility, are the use of energy efficient equipment and renewable energy sources. This presentation aims to provide an enhancement of a previous model for the evaluation of the Total Cost of Ownership (T.O.C.) that supports transmission lines by introducing environmental factors, i.e. GHG emissions and their cost. Efficient transmission lines need to be evaluated for losses by providing vital enhancements beyond the state of the art.

Biography: Antonis Lazari was born in Nicosia, Cyprus in 1988. He studied M.Eng. (Hons) in Electrical and Electronic Engineering and graduated in 2010 from the University of Bristol, UK. Since January 2011 he has been with the Department of Electrical and Computer Engineering, at the University of Cyprus as a PhD student in the field of Electrical Power Engineering. His research interests include Losses Evaluation in the light of increasing penetration of renewable energy generation.




Indices for Assessing the R.E.S Penetration in Transmission Networks of Isolated Systems

Department of Electrical and Computer Engineering

Title: Indices for Assessing the R.E.S Penetration in Transmission Networks of Isolated Systems

Alexandros Nikolaides
Ph.D. Student of the Department of Electrical and Computer Engineering
University of Cyprus

Wednesday, 24th October 2012, 17:00 – 18:30
Room KENTP. ΠΤΕΡ. – E113, Old Campus, University of Cyprus

Abstract: The continuous increase on the penetration levels of Renewable Energy Sources (RES) in power systems has led to radical changes on the design, operation and control of the electrical network. Since the issue of the Directive 2009/28/EC of the European Parliament, each country-member of the European Union, has set specific targets to achieve in accordance to the Directive. Consequently, with renewable energy sources’ integration increasing at a fast rate, the shape of the grid is continuously changing, thus revealing the dynamic nature of the subject. This work investigates the influence of these changes on the operation of a transmission network by developing a set of indices, spanning from power losses to G.H.G emissions reduction. These indices are attempting to quantify any impacts therefore providing a tool for assessing the RES penetration in transmission networks, mainly for isolated systems. These individual indices are assigned an analogous weight and are mingled to provide a single multi-objective index that performs a final evaluation. These indices are used to evaluate the impact of the integration of RES into the classic WSCC 3-machine, 9-bus transmission network.

Biography: Alexandros Nikolaidis was born in Ptolemaida, Greece in 1986. He received his Diploma in Electrical & Computer Engineering from the Democritus University of Thrace, Greece, in November, 2010 and his MSc degree from the University of Cyprus in May, 2012. Since September, 2012 he is pursuing his PhD degree at the Department of Electrical and Computer Engineering of the University of Cyprus. His main research interests include Power System Analysis, Power System Operation, Renewable Energy Sources integration and Power System Planning.




Real-Time Hand Tracking for Human-Computer Interaction

Department of Electrical and Computer Engineering

Title: Real-Time Hand Tracking for Human-Computer Interaction

Dr. Paris Kaimakis

Wednesday, 26th September 2012, 17:30 – 18:30
Room KENTP. ΠΤΕΡ. – E113, Old Campus, University of Cyprus

Abstract: The successful commercialisation of Microsoft’s Kinect has recently demonstrated the increasing demand for reliable, low-cost, real-time Markerless Motion Capture systems — systems that can sequentially estimate the subject’s 3D pose based on visual information, without markers. Such systems have numerous lucrative applications, e.g. in human-computer interaction, computer gaming, animation, automated surveillance, and more.
The last decade has seen minimal progress in the field, mainly due to the conflicting design criteria of such systems: real-time processing indicates that implementation of gradient-based algorithms is necessary for tracking, while the low-cost criterion disqualifies the use of dedicated hardware and therefore imposes use of low-level and often ambiguous data. The problem is that gradient-based approaches become very unstable in the presence of such ambiguity.
In this talk we introduce a system designed to circumvent these difficulties, achieving real-time tracking of the human hand with high precision and zero hardware requirements further to an ordinary laptop. The talk will focus on the system’s early design and modelling steps, as well as its Bayesian formulation.

Biography: Dr Paris Kaimakis conducted his doctoral research in the Signal Processing Laboratory at the University of Cambridge focusing on solutions to the Markerless Motion Capture problem. After receiving the PhD degree in 2009, he worked as a Research Associate in the Computer Laboratory, again in the University of Cambridge. His post-doctoral research concentrated on the automation of urban road traffic surveillance and flow-volume estimation using visual means and sequential Monte Carlo methods. In 2010 he joined Autonomy, the UK’s largest software firm, as a Research and Development Engineer. While in Autonomy, he worked in the development of augmented reality applications for the iPhone/iPad and for Android devices. He has been involved in the development of the popular Aurasma App, the world’s first visual browser (over 3 million users, available at the App Store and Google Play) and worked in related side-projects such as 3D head tracking, image processing and image analysis. In 2011 Paris returned to Cyprus and co-founded a company dedicated to the development and commercialisation of new-generation, human-oriented, controller-free computer interfaces.




Leaders of Computational Intelligence discuss its Grand Challenges at the University of Cyprus

(English announcement below)

To IEEE Computational Intelligence Society σας προσκαλεί στην ημερίδα:
“Οι μεγάλες προκλήσεις στον τομέα της Υπολογιστικής Νοημοσύνης”
με 9 κορυφαίους ακαδημαϊκούς διεθνούς φήμης απ’ όλο τον κόσμο.

Παρασκευή, 14 Σεπτεμβρίου, 9:30 – 17:30
Πανεπιστήμιο Κύπρου,  Κτήριο Λεβέντη, Αίθουσα Β108 (χάρτης)

Η Υπολογιστική Νοημοσύνη, περιλαμβάνει την θεωρία και εφαρμογή μεθοδολογιών και αλγορίθμων εμπνευσμένων από τη βιολογία και τη γλωσσολογία με έμφαση στα νευρωνικά δίκτυα (neural networks), στους εξελικτικούς/γενετικούς αλγόριθμους (evolutionary computation), στα ασαφή συστήματα (fuzzy systems), καθώς και στα υβριδικά ευφυή συστήματα (hybrid intelligent systems).


The IEEE Computational Intelligence Society invites you the the workshop on the
“Grand Challenges of Computational Intelligence”
with 9 leading international experts

Friday, 14 September, 9:30 – 17:30
University of Cyprus, Leventis Building, Room Β108 (map)

Computational Intelligence is the theory and practice of methods and algorithms inspired by biology and linguistics, with special emphasis on Neural Networks, Evolutionary Computation, Fuzzy Systems as well as Hybrid Intelligent Systems.

Optical Communications: What does the future hold?

Department of Electrical and Computer Engineering

Title: Optical Communications: What does the future hold?

Dr. Dimitris Apostolopoulos
Senior Researcher
Photonics Communications Research Laboratory, NTUA
Institute of Communication and Computer Systems (ICCS), Greece

Wednesday, 12th September 2012, 17:30 – 18:30
Room KENTP. ΠΤΕΡ. – E113, Old Campus, University of Cyprus

Abstract: The establishment of optical fiber as the dominant mean of data transfer a few decades ago, vastly changed the telecom world and lead to the Internet era that we experience today. The evolution path of optical communications never stopped since its introduction and even now it faces great challenges and experiences drastic changes. So, what are the driving forces of the evolution of optical communications today? We discuss the current status of optical communication technology and highlight the reasons for its continuous evolution. We identify key domains that researchers are now focusing their efforts and also discuss the role of photonic integration in the commercialization of optical technology. Finally, the introduction of optical communication technologies to datacom is discussed.

Biography: Dr. Dimitris Apostolopoulos was born in Athens, Greece. He followed his studies in the School of Electrical and Computer Engineering, National Technical University of Athens, and received his PhD in 2009 from the same department for theoretical and experimental studies on all-optical broadband systems for switching and buffering in packet networks. Dr. Apostolopoulos is currently a senior researcher at the Photonics Communication Research Laboratory of the National Technical University of Athens (NTUA) and a senior research associate of the Institute of Communication and Computer Systems (ICCS). His research interests are focused on the design and development of novel optical processing systems/sub-systems for optical interconnection and high-capacity next generation optical networks. He has authored and co-authored more than 50 contributed and invited scientific publications in IEEE and OSA journals and conferences, including post-deadline presentations, and has organized several workshops in conferences on optical fiber communications. He also serves as a scientific committee member at the International Conference on Nanosciencies and Nanotechnologies. Dr Apostolopoulos has been actively involved in a number of EU-funded research projects within FP6 and FP7, in which he held leading positions. He actively participates in the FP7 funded ICT-PLATON, ICT-RAMPLAS and ICT-PHOXTROT projects.




Applying the Network-on-Chip principles to systems overlaid on the FPGA fabric

Department of Electrical and Computer Engineering

Title: Applying the Network-on-Chip principles to systems overlaid on the FPGA fabric

Dr. Georgios Dimitrakopoulos
Electrical and Computer Engineering
Democritus University of Thrace
Xanthi, Greece

Thursday, 13th September 2012, 17:30 – 18:30
Room XOD 02 – 114, New Campus, University of Cyprus

Abstract: The rapidly-growing capacity of Field Programmable Gate Arrays (FPGAs), combined with the steady introduction of hardwired support for a multitude of diverse interfaces and functionalities, has promoted FPGAs to an attractive and capable platform for hosting even extended System-on-Chip (SoC) designs. The integration of the ovelaid (on-FPGA or soft) platform and the communication of its components requires also an efficient overlaid communication mechanism. Scalable interconnection networks that use a network of switches connected with point-to-point links can parallelize the communication between soft modules and improve performance significantly. Such on-chip interconnection networks are already a mainstream technology for ASICs, while they are becoming a need and critical in FPGA-based systems. ASIC-oriented interconnection networks even if appropriately customized for the on-chip environment, still lead to sub-optimal designs when transferred directly to FPGAs. This deficit is attributed to the inefficient mapping of the network’s switches and their components to the configurable logic array of the FPGA, which is a peculiar hardware realization substrate in terms of the relative speed and cost of logic vs. wires vs. memory. This talks presents the implementation constraints set by the FPGA fabric for the design of soft interconnection networks and presents new FPGA-targeted architectures. The described techniques focus on the fined-grained decomposition of the switch and the adoption of an elastic flow control mechanism.

Biography: Georgios Dimitrakopoulos received the Diploma in Computer Engineering from the Computer Engineering and Informatics Dept. of the University of Patras in 2001. In 2003 he completed the M.Sc. in “Integrated Hardware- Software Systems” and in 2007 he earned the PhD from the same department. Between 2008 and 2010 he worked as a Postdoctoral fellow at the Computer architecture and VLSI Systems Lab of the Institute of Computer Science (ICS) of the Foundation for Research and Technology Hellas (FORTH) and at the University of Crete. Later on, he was appointed as a Lecturer to the Informatics and Communication Engineering Department, of the University of West Macedonia, Kozani, Greece. Since January 2012, he is a Lecturer of Digital Integrated Circuits in the Electrical and Computer Engineering Department of the Democritus University of Thrace (DUTH), Xanthi, Greece.
G. Dimitrakopoulos has served as a program-cochair of INA-OCMC 2012-2013 workshops co-located with HIPEAC conference. He also served on the technical program committee FPL (2011, 2012), DATE (2011,2013), and ICECS 2011, conferences, as well as INAOCMC (2010-2011), NoCArch (2008-2012), UCHPC 2012 and UMHI 2012 workshops. He is guest co-editor of the IET-Computer and Digital Techniques special issue on Interconnection Network Architectures, while he regularly serves
as a reviewer for other various IEEE journals and conferences.
His research interests lie in the broad areas of digital integrated circuits and computer architecture, and more specifically, he is interested in the design of on-chip interconnection networks for both ASIC and FPGA fabrics, in ultra low power digital design, as well as energy-efficient reconfigurable computing. In these areas he has published more than 30 journal and conference papers and book chapters. He is a member of the HIPEAC network of excellence and the IEEE.




IEEE Cyprus GOLD Affinity Group

The establishment of the IEEE Cyprus GOLD Affinity Group (Graduates Of the Last Decade) ( is intended to serve the needs of graduate students and young engineers of Cyprus in developing professional skills, increase networking activities, and boost their careers. All the activities of this group are performed in volunteer basis within the IEEE general framework.

The group aims at:

  • Providing members with networking opportunities, where students, young and senior engineers and academics are in contact
  • Acting as a bridge between the student branches and industry and provide student internship opportunities at a local and international level
  • Smoothing the transition of young graduates into skilled engineers
  • Organize local seminars and other types of presentations given by distinguished lecturers in the field of electrical and electronics engineering or human resources
  • Organize events in collaboration with the local industrial community, during which presentations on new technology and industrial applications will be given
  • Arrange local field trips to places of interest to the society members
  • Support graduate students and young engineers developing new professional and social skills which may boost their career and professional establishment within the local market
  • Encourage participation in the international activities within the IEEE GOLD community by promoting collaboration with other GOLD Affinity Groups
  • Volunteer to help with the organisation of local conferences or workshops sponsored by IEEE.


Announcements about upcoming activities will be published at regular intervals through this Website (