organized by the Professional Group on Circuit Theory. sponsored by IRE Professional Group on Circuit Theory. The Professional Group on Circuit Theory. organised by Professional Group E10(circuit theory & design). IRE Professional Group on Circuit Theory. organised by Professional Group E10 (Circuit Theory & Design) organised by Professional Group E10 (circuit theory & design), IEE. organised by pProfessional Group Committee C1(Control Theory). organised by Professional Group S. 3. organised by Professional Groups E12 and E15.