I was a teacher at the Intitute of Telecommunications - Oran (I.T.O) from 1984 to 1999, by the following courses: electricity, tests & measurements, electronic components, electronic circuits, logic circuits, computer hardware, microprocessors, assembly programming (8086), algorithms and programming in C. Now, I am a teacher/researcher at the University of Sciences & Technology - Oran (U.S.T.O), where I teach C.A.D (design & modelling with AutoCAD) and doing R & D in the laboratory LAAR (Laboratory of Analysis & Applications of Radiations). My research team has designed a local station in order to receive remote sensing images from polar and geostationnay satellites (like NOAA and METEOSAT).