OCES stands for Orientation Course for Engineers and Scientists. It is a training program that all candidates selected through the BARC Training Schools' selection process need to complete to join various units of the Department of Atomic Energy (DAE). DGFS stands for DAE Graduate Fellowship Scheme. Candidates selected for the DGFS fellowship get M.Tech. admission in select institutes based on a valid GATE score in specified specializations listed in the advertisement, in addition to admission to the OCES courses.