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SDI : Selective Dissemination of Information Service : Concept - Characteristic - Component - Contents Alerts - Difference Between CAS & SDI

SDI  
Selective Dissemination of Information Service
Concept - Characteristic - Component - Contents Alerts - Difference Between CAS & SDI
Concept  -  
SDI is a personal current awareness service providing researcher with the latest publication on a specified research topic.
SDI concept first described by H.P. Luhn of IBM. In 1961 A method of using computer  to provide CAS . SDI refers to tools and resources used to keep a user informed of new resources on specified topics, including the current-awareness services used to inform about new library acquisitions Selective Dissemination of Information (SDI) Service is a refinement of CAS service which is directed to individual / personal requirement (personalized). It provides a deeper analysis of literature.
Characteristic -  
  • SDI answer to specify query.
  • It is single person based .
  • Speed and currency are important.
  • For may be print or electronic 
Component of SDI – 
  • User’s Profile 
  • Database
  • Computer hardware
  • Software
  • User Interface
Forms of SDIb:  SDI service may take the following forms-
Contents Alerts: This service is provided by photocopying, scanning the content pages of learned journals and other important publications keeping in view the interest of the users.
Routine of Periodicals (Automatic Loan): In this procedure, the current issues of periodicals are routed. There are two systems of routing the current issues of the periodicals.
Notification of Forth Coming Conferences, Seminars, etc.: The information about forthcoming meetings, conferences, symposia, seminar, workshop etc. on a specific field should be notified to the members belonging to that specific domain.
Difference Between CAS & SDI 
CAS 
  • It is directed service toward all users who needs it 
  • No Profile matching is involved 
  • Feedback in not Important 
  • Subject coverage may be broad
SDI 
  • It is a person based service .
  • user profile is matched 
  • Feedback is an Important Step.
  • Highly specific subject based on user’s query
Conclusion:
 SDI refers to tools and resources used to keep a user informed of new resources on specified topics.

 Reference : Click Here


1 comment:

  1. Please provide the basic concept of circulation service

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