The dissemination of information, excerpts, etc., the acronym SDI, a term used in library and Information Science. The kind of presentation and transfer of information, particularly new information and updated, including search basis, and send the information needed each person to be a solitary, disciplined, and continuous. Initially, this service manually provide.

process it this way is that first, according to Case Research (Profile) system. all information related to any topic of interest or research projects, the researcher from the database, information retrieval, and to he sent. At a later stage, so that the library or Information Center database, new information received, they have, according to the records, researchers search basis, and provides the latest information related to research projects or interest in them for each separately sends. Usually this regularly and at intervals of a given time is done.