D
Daily Effective Circulation (DEC)- Audience of potential viewers who have the opportunity to see an out-of-home message during a 24-hour period. DEC's are typically measured and adjusted for an 18 hour day and for 18+ buying population.
Demographic Profiles- Audience breakdowns based on various characteristics such as age, sex, income, education, etc.
Design- The artwork and text which comprise the poster or painted bulletin display.
Diorama- A backlit display located in airports, malls, bus terminals, and sports arenas.
Display Period- The exposure time during which the individual advertising message is an out-of-home structure such as a billboard. Bulletins display period varies depending on individual contracts.
DPI (Dots Per Inch)- Dots per square inch of information. In creating artwork for out-of-home creative people should use the highest resolution possible. 300 dpi is typically a bare minimum.