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Meet THESS

A few words about the people working in THESS

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John Markakis

President & CEO

graduated from the Department of Physics, Aristotle University of Thessaloniki, and completed the M.Sc. in Electronic Physics of the same Department in 2006. In 2016 he successfully defended his Ph.D. Thesis concerning electromagnetic exposure and non-ionizing radiation risk assessment. He has been involved in several research projects concerning the assessment of electromagnetic exposure, development of E-field sensors network, design and supervision of optical fiber networks. From 2011 he is the President and CEO of THESS S.A.

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George Tsanidis

Senior Software Developer

was born in 1978 in Thessaloniki. In 2003 he graduated from the Department of Electrical and Computer Engineering, Aristotle University of Thessaloniki. In 2006 he was awarded his MSc degree in Electronic Physics from the Department of Physics, Aristotle University of Thessaloniki. From February 2005 to June 2006 he participated in the Hermes Project of the Radiocommunications Laboratory of the Aristotle University. From August 2007 to February 2011 he worked at the Non Ionizing Office of the Greek Atomic Energy Commission. He is currently working in his Ph.D. dissertation on modelling of active medical implants in the MRI environment.

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George Agrafiotis

Electrical Engineer

received his Electrical and Computer Engineering diploma from the Aristotle University of Thessaloniki in 2019. His dissertation title was "Study of the propagation of the EM waves inside biological tissues with Cole - Cole dispersion using Finite Differences in Time Domain (FDTD)". His research interests include computational electromagnetism, computer programming, electronic applications and study of the waves propagation.

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Marietta Tzirini

Computational Physicist

studied in the Physics Department at Aristotle University of Thessaloniki and received her Physics degree in 2014. In 2018 she received (with distinction) her MSc degree in Computational Physics at the same university. She is currently a PhD candidate in the Department of Applied and Environmental Physics at Aristotle University, working towards her dissertation “Personalization of treatment planning for transcranial magnetic stimulation of the brain using computational techniques”. Her research interests revolve around programming, computational tools, numerical techniques and simulations as ways of solving physics problems. Since 2018 Maria Tzirini has also been employed in THESS S.A., working on the dt-Epilepsy project.

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Mariana Rouni

Computational Physicist

studied in the Physics Department at Aristotle University of Thessaloniki and received her Physics degree in 2018. She is now studying for her MSc degree in Computational Physics at the same university. Her master's dissertation involves sensitivity analysis and uncertainty calculations. Her research interests revolve around programming, computational tools, numerical techniques and simulations as ways of solving physics problems. Since 2019 Mariana Rouni has joined THESS' team, working on the dt-Epilepsy project.