Computational Applications Group [T.Raptis]

Theophanes E. Raptis

Physicist-Software Developer

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"Ex Errare Ad Veritatem"

Research Interests

here is a short list of the more recent investigations in AI Software and Physics

The Symbolic Transform for Image Compression and Classification. The purpose would be to be able to categorize faces or other objects by a bunch of unique complex vectors. Other interesting properties of this indexing scheme are currently under investigation. You can get a presentation of the current state of research in the field here

Electromagnetics. Research on special non linear "force-free" (Beltrami) fields. Click here [BELTRAMI.PPT] for a short review. Anomalous behavior of materials in Wire fragmentation and Bipolar Fusion BPU 7 Conf. (For another interesting hypothesis look here) FEM, FDTD AND Mesh-Free computational methods

Molecular Mechanics - Molecular Dynamics. Polymer dynamics and diffusion processes.Fractality and Complexity issues of molecular orbits

The Digital Universe At the theoretical domain I am particularly interested in the possible algorithmic equivalence between physical processes and programs as proclaimed by the Fredkin-Zuse Hypothesis of Digital Mechanics.

History & Philosophy of Science & Technology

Click link for a speak with title : From Church-Turing Thesis to Fredkin-Zuse and beyond... given at the "Kedros" Bookstore, Stoa Vivliou, Athens in 2007.

And for those who still believe in absolute and eternal physical "laws" here is some nice stuff from Prof. Joao Magueijo's inaugural lecture "Anarchy & the Laws of Physics"

For more info on these and other theoretical musings look at My Back Pages.

Books

Techno-Feudalism, Esoptron editions,2007.
A short essay on the consequences of massive introduction of advanced technology into the masses in the era of neo-liberalism and a critique of the ideology of Trans-Humanism from the point of view of the betrayal of Enlightenment ideals.

Publications - Presentations

2010

C. D. Papageorgiou, T. E. Raptis "Non-radiating Parallel Electric & Magnetic Fields" [PDF] preprint - submitted to J. Phys. A

T. E. Raptis "Numerical Study of an Electromagnetic Launcher" DEMO Report 2010/1

2009

C. D. Papageorgiou, T. .E. Raptis "Fragmetation of Thin Wires Under High Power Pulses and Bipolar Fusion" BPU 7 Conf. Alexandroupolis, Greece, September 2009

C. D. Papageorgiou, T. E. Raptis Dipole Electromagnetic Forces on Thin Wires under Transient High Voltage Pulses Europ. J. App. Phys. 48, 31002 [PDF]

C. D. Papageorgiou, T. E. Raptis "A Transmission Line Model for the Spherical Beltrami Equation" CHAOS2009 Conf. Chania, Crete to appear in "Chaotic Systems: Theory and Applications", C. H. Skiadas and I. Dimotikalis, World Scientific (2010).

2008

"A New Generic Class of Beltrami 'Force-Free' Fields. Part III: Red-Shift and Blue-Shift Non Linear ELECTROVAC Fields" DEMO Report 2008/4

"A New Generic Class of Beltrami 'Force-Free' Fields. Part II: Beltrami Field Helicity Modulators" DEMO Report 2008/3

"A New Generic Class of Beltrami 'Force-Free' Fields. Part I: Theoretical Considerations" DEMO Report 2008/2

T. Raptis, V. Raptis,J. Samios,
"Detection of Diffusive Jumps of Small Penetrants Dispersed in Polymer Systems", 7th Panhellenic Polymer Conference, Ioannina, Greece. Poster Presentation

2007

"Reversibility and Criticality in a Deterministic "Self-Extracting" Bak Sneppen Automaton" Poster 20th Nonlinear Science and Complexity International Conference, Patras, July 2007

T. Raptis, V. Raptis, J. Samios, "A new effective method for quantitative analysis of diffusion jumps, applied in Molecular Dynamics simulations of small molecules dispersed in short chain systems.", J. Phys. Chem. B, V111,I51,(2007) pubs.acs.org/journals/jpcbfk/index.html

2006

"Reversible Cellular Automata without memory.". 19th summer School on Nonlinear Science and Complexity. July 2006 Poster
Y. Bakopoulos, T. Raptis. I. Doxaras, E. Kotsialos, A. Aggarwal, "The Divider Set: A New Concept in Morphology", WSEAS 2006 PDF
T. Raptis, V. Raptis,J. Samios,
"Mechanisms of Gaseous Molecules Diffusion through Amorphous Linear Polymers: A Study via Molecular Dynamics Simulation", 6th Panhellenic Polymer Conference, Patras, Greece. Poster Presentation

2005

T. Raptis, V. Raptis, J. Samios, "Diffusion of small Molecules through Amorphous Linear Polymers", Poster presentation at the Panhellenic Conference of the Hellenic Chemical Society, University of Ioanina. Winning Poster at the EU Nanotechnology Science Forum.

2000

T. Raptis, D. Whitford, R. Kroemer, "Applications of Cellular Automata and Dynamical Systems in Identification and Reconstruction of Biological Sequences", Poster presentation at BioStandards Symposium, EMBL-EBI, Hinxton, Cambridge, UK.

1996

T. Raptis, "Stochastic Resonance in Chaotic Dynamical Systems",7th Panhellenic Conference of the Hellenic Physical Society (EE?), Heraklion, Crete, 4-7 Apr, Vol. 2.

1995:

Diploma Thesis, "Control and Escape Phenomena in Deterministic and Stochastic Nonlinear Dynamical Systems" under the supervision of Prof. G. Tsironis, Physics Dept. University of Crete, Heraclion.

Contact Information Theophanes Raptis

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