عنوان مقاله [English]
نویسندگان [English]چکیده [English]
Semiotics is one of the fields that its comprehension is very helpful in the process of producing new structures in the mass media programming; and Public Service Announcement (PSA) is no exception among them. According to farzan sojudi, the so called layer semiotics is the basis for these kinds of researches and here is taken in to account as a discourse analysis approach. The author examines the semiotics of factors and constructive elements of PSA in the radio channel of Health. A channel that in today’s world appears to have a very important tips in health realm. To highlight the subject, the author has used the structure of layer semiotics, but with some detailed conversion in the content and order of layers according to her own radio productions in different formats such as PSA.