Mr. Stathopulos' main scientific and research activities cover, among others, the following knowledge objects of the High Voltages area: - Numeric calculation of electric fields - Breakdown of medium and large air gaps - Pre-discharges and breakdown of the combination of gaseous - solid dielectric materials - Pre-discharges and breakdown of the combination of solid - liquid insulating materials - Dielectric behaviour of polluted insulators - Puncture of insulators - Measurements in High Voltage installations - Study and optimization of High Voltages measurement systems - Lightning - Lightning protection of human beings, buildings and technical installations - Backflashover on overhead transmission lines - Earthing systems - Recording and localisation of lightning strokes - Influence of electric field and current to human beings - Construction of power circuit elements - Interaction between telecommunication and power networks - Electromagnetic Compatibility Mr. Stathopulos has been actively involved in many research projects. He is also dealing with the application of the technical research in an extended area and an upgrading level involving in: - Studies for the erection of new testing laboratories - Assessment and accreditation of testing laboratories - Technical applications and quality control of industrial systems and equipment - Feasibility investment studies - Studies of regional development policy - Interaction between electric energy and telecommunication networks - Influence of electric energy systems of power frequency to human beings, etc..