Discussion
Statement (A) : CAS is speedy announcement of newly acquired information or documents.
Statement (B) : SDI is a CAS, which alerts users with latest publications in specific field of interest.
Codes :
Answer: D
Both (A) and (B) are true.
A current awareness service is a system for the rapid announcement of newly published or newly acquired documents and information, so that users keep up to date; statement (A) describes it correctly.
Selective dissemination of information, introduced by H.P. Luhn in 1958, is generally described as a personalised form of current awareness service: it matches new items against each user's interest profile and alerts that user to the latest publications in his field. So statement (B) is accepted as true as well.
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