1. THREE-AXIS LEVEL WITH WIFI CONNECTION. Authors: LIVIU-BOGDAN PROTEA, TIBERIU MANESCU, ION-CORNEL MITULETU, CRISTIAN-MIRCEA MUSCAI.2. SIMULATION OF ELECTRIC FIELD LINES PRODUCED BY ELECTRIC POINT CHARGES. Authors: MARIUS-FLORIAN PREDUS, CRISTIAN-MIRCEA MUSCAI, CORNEL HATIEGAN.3. DESIGN OF LOW VOLTAGE ELECTRICAL CIRCUITS FOR INDUSTRIAL RECEIVERS. Authors: LIVIU-BOGDAN PROTEA, CRISTIAN-MIRCEA MUSCAI.