Stergos D. Afantenos Title: Automatic Text Summarization from Multiple Sources for Time Evolving Events. Advisor: P. Stamatopoulos, Assist. Professor Apostolos Argyris Title: High bit rate optical communication systems based on chaotic carriers. Advisor: D. Syvridis, Assoc. Professor Spyros S. Athineos Title: Development of Prototype Autostereoscopic Imaging Systems and Applications. Advisor: N. Theofanous, Professor Pantelis Bouboulis Title: Fractal Interpolation Surfaces. Theory and Applications in Image Compression. Advisor: S. Theodoridis, Professor George Christodoulou Title: Game Theoretic Study of Networks. Advisor: E. Koutsoupias, Professor Vassilis Cutsuridis Title: Biologically Inspired Neural Architectures of Voluntary Movement. Advisor: N. Kalouptsidis, Professor Panayotis G. Katsaloulis Title:Nonlinear Analysis and Visualization of the Genome of Evolutionary Younger Organisms. Advisor: T. Theoharis, Assoc. Professor Antonios F. Olziersky Title: Ge nanocrystal MOSFET memory structure with ordered nanocrystals in the gate dielectric for use in flash memories. Advisor: A. Arapoyanni, Assoc. Professor Sergios Petridis Title: Classification-Optimal Feature Transforms. Advisor: S. Theodoridis, Professor Orestis A. Telelis Set Covering and Network Optimization: Dynamic and Approximation Algorithms. Advisor: V. Zissimopoulos, Professor Elias P. Tsigaridas Title: Algebraic algorithms and applications to geometry. Advisor: I.Z. Emiris, Professor Dimitrios Velessiotis Construction of microelectronic nanostructures and nanodevices using polyoxometallates. Advisor: A. Arapoyanni, Assoc. Professor Gerasimos Xydas Title: Machine Learning Models and Selection Methods for the Auditory Representation of Documents via Synthetic Speech with Enriched Prosody. Advisor: G. Kouroupetroglou, Assist. Professor